Most Read articles

    Published in last 1 year |  In last 2 years |  In last 3 years |  All

    In last 2 years
    Please wait a minute...
    For Selected: Toggle Thumbnails
    Trends and Strategies for Development of Crop Seed Industry in China
    Xinhai LI, Ming LU, Jun ZHENG, Xiaofeng GU, Lijuan QIU, Yu LI, Youzhi MA, Jianmin WAN
    Journal of Agricultural Science and Technology    2022, 24 (12): 1-7.   DOI: 10.13304/j.nykjdb.2022.1101
    Abstract1402)   HTML42)    PDF (506KB)(258)       Save

    Seed industry is a strategic and basic industry, and clarifying the development path of China’s crop seed industry is very important to enhance the competitiveness of national agriculture. This paper analyzed the development trend of the international crop seed industry, assessed the opportunities and challenges faced by the development of China’s crop seed industry, and proposed the innovative development strategies of China’s crop seed industry in the new era. Our study reckoned that the new round of scientific and technological revolution characterized by “biotechnology and informatization” had promoted the comprehensive upgrading of the crop seed industry, biotechnology productions had become an important growth point for the development of the seed industry, and multinational seed enterprises had accelerated their occupation of the global seed market. Global scientific and technological innovation and China’s economic transformation and development have brought new opportunities for the development of China’s crop seed industry. Currently,China has basically established a scientific and technological innovation system for crop seed, and seed enterprises have continued to grow, but still facing some challenges such as insufficient original innovation in key science and technology, imperfect seed industry innovation system. Our study suggested that China’s crop seed industry should further strengthen the effective cohesion in the innovation chain and build a deep integration system of production, education and research in the new era, and consolidate the original foundation of seed science and technology, produce high-value intellectual property rights such as key technologies and elite new varieties, as well as cultivate innovative enterprises, improve policy mechanisms and business environment, and promote the high-quality development of the crop seed industry.

    Reference | Related Articles | Metrics
    Accelerate the Research and Application of Biological Breeding to Promote the Self-Reliance of Agricultural Science and Technology
    Wen ZHANG
    Journal of Agricultural Science and Technology    2022, 24 (12): 8-14.   DOI: 10.13304/j.nykjdb.2022.0733
    Abstract1244)   HTML12)    PDF (491KB)(106)       Save

    Food security is the the pillar of national development and safety. General Secretary XI Jinping pointed that the fundamental solution to stabilize and increase the food production lay in the scientific and technological progress concerning the limited arable land in domestic. At present, a new round of scientific and technological revolution in agriculture characterized by modern biotechnology is breeding major breakthroughs, and plays a leading role in the development of modern agriculture. The development of biological breeding is an important strategy to ensure the national food security and enhance the international competitiveness. This paper introduced the development trend of biological breeding in the development of international agricultural science and technology. For promoting the industrial application of biological breeding, 4 of relationships should be correctly handled, and 4 tasks should be put forward, which provided theoretical guidance for accelerating the development and application of biological breeding technologies in China.

    Reference | Related Articles | Metrics
    Epigenetic Regulation and Crop Breeding
    Xianwei SONG, Shanjie TANG, Xiaofeng CAO
    Journal of Agricultural Science and Technology    2022, 24 (12): 33-38.   DOI: 10.13304/j.nykjdb.2022.1040
    Abstract1155)   HTML18)    PDF (440KB)(183)       Save

    Epigenetic is a biological phenomenon that DNA sequence unchanged but gene expression was genetically altered, and it includs DNA methylation, histone modification and variants, RNA modification, chromatin remodeling and non coding RNA etc. Epigenetic mainly regulates gene expression and transposon activity at transcriptional and post transcriptional levels. More and more research showed that epigenetic plays an important role in the formation of important agronomic traits and ploidy breeding of crops. This paper reviewed the important progress in the research of epigenetic regulation directly related to crop breeding, and analyzed its potential and ways of application in crop breeding, which were expected to accelerate and promote the basic and applied research of plant epigenetic regulation.

    Reference | Related Articles | Metrics
    Artificial Intelligence Accelerates Epigenetics and Plant Breeding
    Weijun GUO, Dongwei LI, Shang XIE, Liwen YANG, Cong LI, Jian TIAN, Li PU, Xiaofeng GU
    Journal of Agricultural Science and Technology    2022, 24 (12): 90-100.   DOI: 10.13304/j.nykjdb.2022.1031
    Abstract1134)   HTML21)    PDF (1136KB)(226)       Save

    The rapid growth of the global population and tremendous climatic changes are new challenges for food security and compel breeders to develop new avenues of crop breeding. In recent years, the deep integration of biotechnology (BT) with artificial intelligence (AI), big data, and other information technology (IT) has promoted the rapid development of intelligent design breeding technology. AI-based breeding technology accelerates multi-omics mapping and functional elucidation and the identification of excellent allele variations around the genome, and breeds new varieties through genome design breeding traits. The crucial agricultural breeding traits of crops are synergistically regulated by genetic, epigenetic, and environmental factors that epigenetic marks bridge other factors playing a pivotal role in the regulation of traits. The development of intelligent design technology makes it possible for accurate design breeding based on epigenetic inheritance, which is becoming a new way to improve crop breeding traits. The deep integration of epigenetics and AI has greatly facilitated the identification of genome-wide epigenetic modification sites and the elucidation of regulatory mechanisms. The design of regulatory circuits based on these epigenetic sites has been innovated to achieve the directional creation of new germplasm with excellent comprehensive traits and the cultivation of major varieties.

    Table and Figures | Reference | Related Articles | Metrics
    Prospects for Commercialization of Biotech Breeding Technology of Important Crops in China
    Jian ZHANG
    Journal of Agricultural Science and Technology    2022, 24 (12): 15-24.   DOI: 10.13304/j.nykjdb.2022.0697
    Abstract1100)   HTML9)    PDF (538KB)(242)       Save

    China has more population in the world but with limited arable land and water resources. Scientific innovation becomes a unique solution to promote the crop productions for national food security. Commercialization of biotech breeding technology in maize, soybean, oil rape and cotton has played a critical role in seed industry developmentin these major crop production countries including US, Brazil and Argentina. After over 20 years’ scientific innovation of biotech crop research and development (R&D) in China, the biotechnology crops for maize and soybean with resistance to insect and herbicide tolerant traits have been ready, these biotech crops would not only reduce the inputs of crop production, but also increase the yield and farmers’ incomes significantly. Due to the commercialization of biotech breeding technology involves in multiple aspects of research and development of scientific innovation, regulatory appraisal of biosafety and stewardship requirements, international trade, agricultural production and public acceptance etc., which is a large and complex system engineer. Therefore, only those of the larger seed enterprises with capabilities can lead the whole processes by integrating R&D resources of scientific, academic and seed industrial units to create an innovation consortium for collaborations across the whole R&D chain and commercial chain together. Such an innovation consortium will be capable to continuously launch new varieties with better-yielding, nutritious, less inputs and environmental-friendly products should steadily support the commercialization of biotech breeding technology of important crops towards a sustainable and high-quality development of seed industry in China. Biotech breeding technology is the core of seed innovation, so establishing an innovative system for modern breeding and strengthening the deep mine of germplasm resources plus breaking through the key technologies of cutting-edge breeding for strategic new varieties, becomes the solution for germplasm improvement and a key for winning the seed industry as well as the fundamental support for firmly grasping the initiative of food security. This paper summarized the application of biotech breeding, and proposed the developmental strategies of modern seed industry. Biotech breeding technology will become the important approach to solve the germplasm resource shortage and environmental constrains faced by China’s agricultural development while driving the development of China’s modern seed industry and the continuous improvement of international competitiveness, and realizing the leap from a large seed industry to a strong seed country.

    Table and Figures | Reference | Related Articles | Metrics
    Research Progress of New Crop Germplasm Enhancement in China
    Hao CHEN, Fei ZHOU, Yongjun LIN
    Journal of Agricultural Science and Technology    2022, 24 (12): 112-119.   DOI: 10.13304/j.nykjdb.2022.0998
    Abstract1097)   HTML9)    PDF (493KB)(169)       Save

    As a country with a large population and agriculture, our government has always attached great importance to agricultural issues and food security. Based on the national conditions of large population and limited arable land resources, China tolces relying on scientific and technological development to improve the yield level as the main means to ensure the food security. With the active deployment and strong support on agricultural development, China has made continuous breakthroughs and innovations in crop breeding theory and technology in recent years. The genetic dissection of important agronomic traits of crops, the utilization of gene alleles with high breeding value, the innovation and application of gene editing technology, genomic breeding and de novo domestication strategies, industrialization pilot of transgenic soybean and maize provide new ideas and strategies for the creation of new crop germplasm in China. This paper sorted out and reviewed some representative achievements made by China in this field, and briefly summarized and looked forward to the development prospects.

    Reference | Related Articles | Metrics
    Genome Editing and Its Applications in Crop Improvement
    Lei YAN, Jinshan ZHANG, Jiankang ZHU, Lanqin XIA
    Journal of Agricultural Science and Technology    2022, 24 (12): 78-89.   DOI: 10.13304/j.nykjdb.2022.1030
    Abstract1087)   HTML18)    PDF (1256KB)(203)       Save

    In the context of climate change, increasing world population, decreased farmland as well as frequent outbreaks of natural disasters, global food production is facing unprecedent challenges. CRISPR/Cas-mediated genome editing technologies enable targeted genome modification in a sequence-specific manner, offering great potential in crop improvement. This review aimed to provide an informative summary of the latest development and breakthroughs in CRISPR/Cas-mediated genome editing technologies including gene knockout, base editing, prime editing and gene replacement through homology-directed repair (HDR), as well as their applications in crop improvement. Finally, we discussed the existing challenges and future prospects in the development of novel genome editing toolkits and their applications in agriculture to ensure global food security and sustainable agricultural development.

    Table and Figures | Reference | Related Articles | Metrics
    Genetic Regulation Mechanisms of Important Traits and Molecular Design Breeding in Livestock and Poultry
    Wenyue WANG, Xiaoyu MI, Kangtai SUN, Yichao DAI, Zhipeng YAO, Yuanpeng GAO, Jun LIU, Yiqiang GE, Songmei ZHANG, Xiaoming DENG, Yong ZHANG
    Journal of Agricultural Science and Technology    2022, 24 (12): 39-47.   DOI: 10.13304/j.nykjdb.2022.0979
    Abstract1086)   HTML8)    PDF (519KB)(176)       Save

    Research on the genetic basis of important economic traits in livestock and poultry is important for the next generation of molecular design breeding, which is the research frontier of scientific and technological innovation in the international livestock and poultry seed industry. Livestock and poultry breeds are rich in resources, diverse in production types, wide in ecological adaptation range, and outstanding in excellent traits in China. However, there are problems of insufficient protection and collection of germplasm resources, unclear analysis of trait characteristics and genetic mechanisms etc., resulting in insufficient development and utilization of rich livestock and poultry genetic resources in China, and it is difficult to support the research and development and application of molecular design breeding technology. To face the demand of future agriculture modernization and production of livestock and poultry seed industry, this paper summarized the research progress on genetic regulation mechanism and molecular design breeding of important traits of livestock and poultry at home and abroad, as well as the bottlenecks faced by molecular design breeding of livestock and poultry in China, and discussed the development trend of molecular design breeding of livestock and poultry in the future. The review provided significant insights for technological innovation and development of the future livestock and poultry breeding industry.

    Reference | Related Articles | Metrics
    Global Genetically Modified Crop Industrialization Trends in 2022
    Haohui LI, Caiyue LIU, Haiwen ZHANG, Xujing WANG, Qiaoling TANG, Youhua WANG
    Journal of Agricultural Science and Technology    2023, 25 (12): 6-16.   DOI: 10.13304/j.nykjdb.2023.0756
    Abstract1084)   HTML67)    PDF (752KB)(651)       Save

    Since the commercialization of genetically modified (GM) crops in 1996, their industrial applications have developed rapidly in worldwide with increasing planting area and crop types, which have significant economic and social benefits. This paper analyzed the global situation of GM crops cultivation in 2022, and the development trends of major countries and regions planting GM crops. In 2022, the planting area of GM crops accounted for about 12% of the total arable land area with an increase of 3.3%. The number of the countries approved to cultivate GM crops increased to 29, and 71 countries and regions approved the commercial application of GM products. Based on the planting area of GM crops, the GM corn and soybean were dominant, and the planting area of the GM crops with multiple traits was also constantly expanding. The industrial applications of GM crops will become new growth driver for agricultural production and economic development, and the applications and effects of GM crops will continuously increase with the iterative upgrading of bioengineering breeding technologies.

    Table and Figures | Reference | Related Articles | Metrics
    Study and Application of Salt and Alkali Tolerance in Rapeseed
    Heping WAN, Hao ZHANG, Yi YU, Jingdong CHEN, Changli ZENG, Lun ZHAO, Jing WEN, Jinxiong SHEN, Tingdong FU
    Journal of Agricultural Science and Technology    2022, 24 (12): 59-67.   DOI: 10.13304/j.nykjdb.2022.0970
    Abstract1051)   HTML17)    PDF (578KB)(132)       Save

    Soil salinization has become one of the main limiting factors for agricultural development. The stress damage of saline alkali to plants can be divided into osmotic stress, ion toxicity, active oxygen damage and high pH stress. Saline alkali stress has different effects on seed germination, seedling growth, yield and quality of rapeseed. This paper expounded the influence mechanism of saline alkali stress on different growth stages of rapeseed, analyzed the saline alkali tolerance mechanism of rape from the aspects of osmotic regulation, active oxygen removal, absorption and storage of Na+, and the secretion of organic acids by roots, and put forward measures to improve the saline alkali tolerance of rapeseed, including exploring and utilizing saline alkali tolerance genes, adopting reasonable cultivation methods and using exogenous substances, which provided theoretical basis for the improvement and utilization of saline alkali land by using saline alkali tolerant rapeseed.

    Reference | Related Articles | Metrics
    Digital Development of China’s Crop Industry: Achievements, Difficulties and Prospects
    Beibei FAN, Jin LI, Chen MA
    Journal of Agricultural Science and Technology    2022, 24 (12): 25-32.   DOI: 10.13304/j.nykjdb.2022.0579
    Abstract1050)   HTML9)    PDF (469KB)(113)       Save

    As the basic industry of agricultural modernization, promoting the revitalization of seed industry has become one of the core tasks of building China’s strategic science and technology system and promoting the overall revitalization of rural areas. China has initially realized the integration of digital technology with breeding, complex seed production, industrial extension and other aspects. However, compared with the status quo that developed countries and region in Europe and the United States have entered the “4.0 era” of intelligent design breeding, China’s breeding technology research and development is still in the “2.0 era” to “3.0 era” of the seed industry. In the face of the development trend of intelligent breeding and seed breeding, precision seed industry promotion and service, and in-depth seed industry big data collection, the integration and innovation research of digital technology, molecular breeding and conventional breeding technology, and in-depth development of multiple genetics should be encouraged. The big data mining and analysis, application of commercial breeding software and platforms, and the comprehensive establishment of the digital marketing and management system should be promoted.

    Reference | Related Articles | Metrics
    Research Progress on Molecular Basis of Tree Traits Formation
    Shougong ZHANG
    Journal of Agricultural Science and Technology    2022, 24 (12): 48-58.   DOI: 10.13304/j.nykjdb.2022.0943
    Abstract957)   HTML3)    PDF (640KB)(55)       Save

    Forestry is one of the important industries of the national economy. In-depth study of tree traits for the purpose of human needs and analysis of the molecular basis of the formation of tree important traits are the basic guarantee for the establishment of efficient breeding technology system, and the key to cultivate breakthrough varieties that meet the major national needs. This is of great significance to ensure the sustainable development of forestry in China, and serve major strategies such as national timber security, food security, ecological security and rural revitalization. With the rapid development of biotechnology, the research on the molecular basis of tree traits has become more in-depth. This paper focused on the formation and regulation mechanism of wood formation, forest economic traits and tree stress resistance, sorted out the current research progress at home and abroad, reviewed the molecular basis of tree trait formation, and prospected the future research trends and technological development of tree traits.

    Reference | Related Articles | Metrics
    Innovation and Progresses in de novo Domestication of Crops
    Jingkun ZHANG, Wenjia LI, Peng ZENG, Xiangbing MENG, Hong YU, Jiayang LI
    Journal of Agricultural Science and Technology    2022, 24 (12): 68-77.   DOI: 10.13304/j.nykjdb.2022.0985
    Abstract946)   HTML11)    PDF (1225KB)(91)       Save

    In the past century, the breeding theories and systems have been greatly developed, and series of new breeding strategies have gradually emerged, such as heterosis utilization, hybrid breeding, mutagenesis breeding, molecular marker-assisted breeding, transgenic breeding, genome editing breeding, molecular design breeding etc. making critical contributions to world food security. Recently, along with the development of biotechnologies, a new breeding strategy termed de novo domestication has been proposed and demonstrated to create new crops. Here, this paper reviewed the emergence of de novo domestication and its roadmap, the germplasm basis, the genetic basis and the fundamental biotechnologies and related policy of de novo domestication. Furthermore, it also discussed presumable challenges and applications of de novo domestication in crop breeding. In future, de novo domestication may provide a new practical way for germplasm innovation and achieve novel breeding goals to face upcoming agriculture challenges.

    Table and Figures | Reference | Related Articles | Metrics
    Development Trends and Strategies of Gene Circuit Design and Synthesis Technologies in Agricultural Organisms
    Min LIN, Lei WANG, Xiaofeng GU, Yongliang YAN, Zhu LIU, Tao TU, Bin YAO
    Journal of Agricultural Science and Technology    2022, 24 (12): 101-111.   DOI: 10.13304/j.nykjdb.2022.1021
    Abstract939)   HTML10)    PDF (1036KB)(44)       Save

    With the highly cross-integration of frontier disciplines such as bioomics, systems biology and synthetic biology, the new generation of genetic engineering technology has maked new breakthroughs. Gene circuit design and synthesis is the core technology of the new generation of genetic engineering, and its three technical characteristics are subversion, intelligence and precision. Accelerating the innovation of gene circuit design and synthesis technology of agricultural organisms will provide important technical support for creating a new generation of agricultural varieties and promoting the high-quality green development of Chinese agriculture. In this paper, the international development trends of gene circuit design and synthesis technology of agricultural organisms were summarized, and the development strategies and priority fields of intelligent design and precise expression technology of agricultural biological gene circuit in China were discussed.

    Table and Figures | Reference | Related Articles | Metrics
    Development of Biobreeding Techniques in Main Aquaculture Fish Species
    Yonghua SUN, Wei HU
    Journal of Agricultural Science and Technology    2022, 24 (12): 120-128.   DOI: 10.13304/j.nykjdb.2022.0711
    Abstract910)   HTML18)    PDF (535KB)(179)       Save

    As blue food, fish and other aquatic products are recognized as healthy and high-quality sources of animal protein, and play significant roles in supporting global food and nutrition security. China is the largest aquaculture country in the world, and its success stories have attracted global attention. China has developed and utilized various breeding methods for aquaculture species, such as selection breeding, hybridization breeding, polyploid breeding, transgenic breeding, etc. and carried out genome editing and genome selection-based breeding in some species, pioneered some novel breeding methods, such as the fish germline stem cell-oriented approach and reproduction on-off strategy. By using these technologies, Chinese aquaculture scientists have bred various aquaculture species or fish lines with valuable traits, which drives and supports the high-quality development of Chinese aquaculture. This article systematically reviewed the development and application of the above biobreeding techniques in the generation and application of novel fish strains with valuable traits, and provided an outlook on the future development of biobreeding technology, which aimed to promote the breeding of new lines and varieties of aquaculture fish, and support the high-quality development of aquaculture in China.

    Reference | Related Articles | Metrics
    Research Progress on Development of New Germplasm of Forest Trees
    Junhui WANG
    Journal of Agricultural Science and Technology    2022, 24 (12): 129-141.   DOI: 10.13304/j.nykjdb.2022.0946
    Abstract665)   HTML3)    PDF (945KB)(64)       Save

    The innovation of forest germplasm is the basis for the revitalization of forest seed industry, and is a solid foundation for ensuring the national timber, grain and oil and ecological security. With the upgrading of instruments and equipment, the development of multi-omics, intelligence and information technology and the improvement of relevant theoretical level, the research of forest germplasm in China has changed from traditional empirical collection and extensive evaluation to modern, targeted and efficient new germplasm creation and large-scale, accurate, systematic evaluation and mining. This paper reviewed the progress of new forest germplasm creation in China from 4 aspects: the current situation, the core key technology, the large-scale breeding, and the future development direction of new forest germplasm. It was proposed that the combination of traditional hybrid breeding and modern biotechnology should accelerate the development of high-throughput accurate evaluation, whole genome selection, precise genome operation new technologies for germplasm develpment and breeding, such as synthetic biology and cell factory, serve the creation of high-quality germplasm and the cultivation of breakthrough new varieties.

    Table and Figures | Reference | Related Articles | Metrics
    Current Situation and Countermeasures Analysis of China’s Crop Seed Industry
    Lingbo KONG, Qiao LIN, Yingli NIE, Jingjing WANG, Hong WEI
    Journal of Agricultural Science and Technology    2023, 25 (4): 1-13.   DOI: 10.13304/j.nykjdb.2022.0507
    Abstract453)   HTML31)    PDF (2542KB)(825)       Save

    Crop seed industry is a national strategic and basic core industry, which is the foundation for promoting the long-term stable development of China’s agriculture and ensuring the national food security. In order to comprehensively study the development status of China’s crop seed industry, there were three dimensions of seed industry had been analyzed, including the seed industry policy, enterprise competitiveness and the supply and demand status of superior seed production. The key points of policy support in crop seed industry were summarized, the core competitiveness of leading enterprises was shown and the advantage had been contrasted with international seed enterprises. Meanwhile, the industrialization characteristics of two superior seed were analyzed, such as hybrid maize and hybrid rice. Based on the content of analyzed, the problems in the development of China’s crop seed industry were summarized. The countermeasures and suggestions put forward for establishing a financial security system, strengthening the protection and utilization of germplasm resources, accelerating the innovation of breeding technology, promoting the joint breeding of science and enterprises, and improving the legal and regulatory system, which would provide reference for the innovation and development of China’s crop seed industry.

    Table and Figures | Reference | Related Articles | Metrics
    Review, Status and Suggestions of the Protection on New Agricultural Plant Varieties in China
    Abudukeyoumu Abudurezike, Gulimila Aikebaier, Lin XU, Guorong YAN, Ning LIU, Lianjia ZHAO, Chaohong DENG, Palidan Aihaiti, Wei WANG
    Journal of Agricultural Science and Technology    2022, 24 (9): 1-11.   DOI: 10.13304/j.nykjdb.2021.0894
    Abstract365)   HTML15)    PDF (2173KB)(87)       Save

    The protection of new plant varieties is an important part of the implementation of the national intellectual property strategy and promoting agriculture strategy through science and education, and an important driving force of agricultural science and technology innovation. Based on the comprehensive analysis of the protection status of new varieties of agricultural plants in China, this paper collected and sorted out the data of protection of new varieties of agricultural plants over the years, and summarized the status quo and research progress of protection of new varieties of agricultural plants in China. In view of the problems existing in the protection of new varieties of agricultural plants in China, such as weak protection consciousness, unbalanced application structure, low protection level, weak protection strength, difficulty in safeguarding rights, obtaining evidence and enforcing laws, etc., countermeasures and suggestions were put forward to promote the protection and innovation of new varieties of agricultural plants in China from the aspects of increasing publicity, strengthening scientific and technological management and formulating incentive measures. It provided important theoretical support and reference for further developing the modern seed industry promotion project in China, effectively enhancing the seed industry supervision and governance capacity, and building a powerful seed industry.

    Table and Figures | Reference | Related Articles | Metrics
    Reasons and Countermeasures for the Obstruction of Agro-products Export from China to Republic of Korea
    Linyu GUO, Chao ZHOU, Xinxin SONG, Ruigang GAO, Sujuan CUI, Guibiao YE
    Journal of Agricultural Science and Technology    2022, 24 (10): 14-22.   DOI: 10.13304/j.nykjdb.2022.0543
    Abstract334)   HTML14)    PDF (1335KB)(159)       Save

    With the intensive development of China’s opening to the outside world, the structure of China’s agricultural trade has undergone significant changes, and the agricultural trade has shown deficits for consecutive years, which has been continuously widening. Hence, taking effective measures to promote export growth is an significant task concerning the agricultural balance of payments. Republic of Korea is the fourth largest target market for agricultural exports of China, and China has maintained a surplus in agricultural trade with Republic of Korea for a long time, but the growth rate of China’s agricultural exports to Republic of Korea has tailed off in recent years. Pesticide residue limits are typical technical trade measures that hinder and restrict the export of our agricultural products to Republic of Korea. Particularly in recent years, Republic of Korea has been adjusting management system for pesticide utilization and measures related to import monitoring and inspection, resulting in an increasing trend of China’s agricultural exports to Republic of Korea being hindered due to pesticide residue problems. This study collated data about pesticide residue violations notified by Republic of Korea to China’s exports of agricultural products from January 2015 to April 2022 . The results showed that the number of China’s agricultural exports to Republic of Korea notified for pesticide residue problems, the types of pesticides involved and the range of products affected had been increasing. The main factors leading to the increase of obstruction were the overall implementation of the Positive List System of pesticides in Republic of Korea and the expansion of the scope of monitoring of pesticide residues in imported agricultural products, and the insufficient ability of our agricultural export enterprises to obtain information about foreign regulations and standards, and the standardization of pesticide use management in the production process remained to be enhanced. To enhance the ability of China’s agricultural products to deal with pesticide residue trade barriers in Republic of Korea, it was needed to enhance the early warning of regulations and standards in Republic of Korea, improve the scientific use of pesticides and quality and safety control capabilities of production entities, explore to promote the Republic of Korea side to establish key trade products import limits and improve pesticide registration and limit standards for characteristic domestic small crops.

    Table and Figures | Reference | Related Articles | Metrics
    Research Progress of Aquaponics System
    Ruikang SUN, Jinghua FU, Minjun XU
    Journal of Agricultural Science and Technology    2023, 25 (9): 227-233.   DOI: 10.13304/j.nykjdb.2022.0598
    Abstract325)   HTML19)    PDF (1086KB)(216)       Save

    Aquaponics is an innovative compound production system composed of recirculating aquaculture and hydroponic cultivation, which has the characteristics of high resource utilization rate, no chemical fertilizers and antibiotics, low consumption, high efficiency and sustainability. It is considered as a modern agricultural farming system of ecological protection. Although aquaponics system has developed rapidly in recent years and has been widely promoted and applied, it still lacks systematic cognition and holistic analysis. This paper summarized the technological development of aquaponics system, the main research contents, research progress and development trend at home and abroad. Combined with the development status of aquaponics system, it was predicted that the future aquaponics system construction would tend to be decoupled and ecological, the layout would move toward urbanization and three-dimensional, the large-scale intelligent and commercial implementation would be carried out, and the trend would be diversified and integrated innovation. Meanwhile, relevant improvement suggestions were put forward, which aimed to provide scientific ideas for the efficient construction and sustainable development of aquaponics complex system.

    Table and Figures | Reference | Related Articles | Metrics
    Biosynthesis and Industrial Application of Astaxanthin
    Liqing MIAO, Xuhui MA, Suzhen LI, Rumei CHEN, Xiaoqing LIU
    Journal of Agricultural Science and Technology    2023, 25 (3): 21-29.   DOI: 10.13304/j.nykjdb.2022.1091
    Abstract324)   HTML12)    PDF (1749KB)(189)       Save

    A staxanthin belongs to the carotenoids. It has strong antioxidant activity and a variety of biological activities. Therefore, astaxanthin is widely used in food, chemical, medical and other fields. Astaxanthin has stereoisomerism and geometric isomerism. The different isomers have different biological activities and commercial applications. Nowadays, astaxanthin for commercial application mainly comes from chemical synthesis and extracts from microorganisms and Haematococcus pluvialis, but both of the methods have certain limiting factors. In order to open up a new astaxanthin biosynthesis pathway, more and more studies have reported that astaxanthin biosynthesis pathway is reconstructed in plants by genetic engineering technology to synthesize astaxanthin in recent years. At the same time, the stability of astaxanthin was improved to expand its application scope and enhance the absorption effect. the characteristics, main biosynthetic pathways and applications of astaxanthin were overviewed, and the development of plant genetic engineering research and active delivery system related to astaxanthin synthesis were summarized. It is expected that the combination and transformation of research results could promote the industrial application of astaxanthin in the future.

    Table and Figures | Reference | Related Articles | Metrics
    Layout and Implementation Effect Analysis of the “13 th Five-Year” National Key Research and Development Program’s “Forestry Resource Cultivation and Efficient Utilization Technology Innovation”
    Wen DONG, Ming CAI, Pan HU, Miao LU, Zhenzhong WANG, Kangtai SUN, Yufei LI, Bingyou LU, Hui ZHANG, Xiaoming DENG
    Journal of Agricultural Science and Technology    2024, 26 (4): 1-8.   DOI: 10.13304/j.nykjdb.2023.0767
    Abstract310)   HTML8)    PDF (834KB)(132)       Save

    The reform of the “13th Five-Year” National Science and Technology Plan established a new framework for national key research and development programs. The inclusion of the “Forestry Resource Cultivation and Efficient Utilization Technology Innovation” aimed to support technological innovation in forestry. This initiative was strategically designed to reveal mechanisms for regulating forestry resource cultivation and efficient utilization, enhance the unit productivity of major artificial forests, and improve resource utilization efficiency. The approach involved organizing basic research, key technology research, and technology integration demonstrations through an “innovation chain layout and integrated implementation of the industrial chain”. By the end of 2022, the program had concluded successfully and completed the comprehensive performance evaluation. This study, focusing the "Forestry Resource Cultivation and Efficient Utilization Technology Innovation" of the “13th Five-Year” National Science and Technology Plan, summarized and analyzed the background, project initiation, and implementation effectiveness, which would serve as a valuable reference for the future allocation, organization and management of forestry science and technology resources.

    Table and Figures | Reference | Related Articles | Metrics
    Comprehensive Analysis of Large-Scale Saccharina japonica Damage in the Principal Farming Area of Rongcheng in Shandong Province from 2021 to 2022
    Xiaodong LI, Li SU, Xiaojie LI, Jie LI, Yingjiang XU, Lirong CHANG, Rencheng YU, Dezhou YANG, Shaojun PANG
    Journal of Agricultural Science and Technology    2023, 25 (1): 206-222.   DOI: 10.13304/j.nykjdb.2022.0728
    Abstract302)   HTML13)    PDF (10128KB)(127)       Save

    Large-scale festered Saccharina japonica damage broke out in Rongcheng, one of the principal Saccharina japonica production region in China from November 2021 to April 2022. This natural disaster covered an area of 9 300 hm2 and caused a direct economic loss of 20×108 yuan (RMB). Results of field survey, indoor culture experiments and historical data analyses unveiled the sequential process of this unprecedented event. Driven by surface water current, red tide of Gonyaulax polygramma and Akashiwo sanguinea travelled from the west to the east along and bypassed Shandong peninsula, entering Saccharina japonica farming region. Dissolved phosphorus in seawater was detected to be at 3.68 μg·L-1, reaching limited level for Saccharina japonica growth. Seedlings of Saccharina japonica grew normally in seawater sampled from the problematic area. Survey buoy mounted at the problematic region recorded a significant low salinity of 30.92 PSU and a much higher surface water transparency during the breaking time. In general, over high seasonal water transparency and exhausted nutrients resulted from the red tides were considered to be the direct causes. Festered blade tissue facilitated propagation of alginate-degrading bacteria, causing secondary damage in the entire farming region.

    Table and Figures | Reference | Related Articles | Metrics
    Development Status and Countermeasures of Agricultural Products Processing Industry in China
    Xinyu LIU, Yao ZHU, Yajie LIU, Jing WANG, Hehe LI, Jinyuan SUN, Dongrui ZHAO, Xiaotao SUN, Baoguo SUN, Yahui HE
    Journal of Agricultural Science and Technology    2022, 24 (10): 6-13.   DOI: 10.13304/j.nykjdb.2021.0629
    Abstract290)   HTML16)    PDF (1556KB)(145)       Save

    Agricultural products processing industry is the largest manufacturing industry in China, which is the strategic pillar industry in economic development. By summarizing and analyzing the development status of China’s agricultural product processing industry and the problems compared with some developed countries, it could be found that our agricultural products processing industry presented a steady development trend as a whole,while the development of China’s regional agricultural product processing industry was not so balanced, and the processing conversion rate of agricultural products and the ratio of agricultural product processing industry to total agricultural output value needed to be improved. Some suggestions from the aspect of policy guidance, standard system, characteristics and advantages of different localities and technological innovation were put forward to explore how to break through constraints and bottlenecks of China’s agricultural product processing industry, increase the conversion rate of agricultural product processing, improve the ratio of agricultural product processing industry to total agricultural output value, enhance the ability of independent innovation, optimize industrial transformation, and promote upgrading and accelerate the rapid development of China’s agricultural product processing industry.

    Table and Figures | Reference | Related Articles | Metrics
    Carbon Peak and Carbon Neutralization Goals and Realization Paths of the Aquaculture and Fishing Industry in China
    Xue LI, Zifei LIU, Mingjun ZHAO, Lejun XU, Huiwu SUN
    Journal of Agricultural Science and Technology    2022, 24 (11): 13-26.   DOI: 10.13304/j.nykjdb.2022.0087
    Abstract286)   HTML9)    PDF (3563KB)(165)       Save

    Under the background of carbon peak and carbon neutralization,setting and implementing reasonable industry-specific goals has practical significance for the green and high-quality development of China’s fishery and the “dual carbon” strategy. Fishery mainly contains the aquaculture and fishing industry and has double attributes of carbon source and carbon sink. Based on the existing carbon emission and carbon sink accounting methods, this paper explored the “double carbon” goals of China’s aquaculture and fishing industry and the paths to achieve it. The analysis results showed that: ①from 2011 to 2020, due to the double influences of the expansion of fishery and the policy of “reducing ships and changing production”, the carbon emissions increased firstly and then decreased, but it remained to be seen whether the carbon emissions reached a peak; carbon emissions from aquatic feed was the largest carbon source; ② due to the affection of the rapid development of aquaculture, the carbon sinks experienced a rise in volatility, and aquaculture became the primary source of carbon sinks; ③aquaculture and fishing industry were both dual in carbon cycle, and they were more carbon source in China with over 3×107 t of carbon not being neutralized. This paper set reasonable goals of carbon peak and neutralization for aquaculture and fishing industry, based on the big demand of aquatic products and the high-quality green development of aquaculture and fishing industry in China. In order to achieve the carbon goals, this paper proposed technical paths of reducing emissions in key links and expanding fishery sinks, social management methods for exploring fishery carbon trading mechanism and strengthening policy guidance. This paper provided useful reference for supporting China’s aquaculture and fishing industry to achieve carbon peak and carbon neutralization goals, and promote the transformation and upgrade of China’s aquaculture and fishing industry.

    Table and Figures | Reference | Related Articles | Metrics
    Indexes Analysis and Comprehensive Evaluation of Drought Resistance of Cotton Varieties
    Juyun ZHENG, Zhiwei SANG, Junduo WANG, Zhaolong GONG, Yajun LIANG, Zeliang ZHANG, Jiangping GUO, Ming MO, Xueyuan LI
    Journal of Agricultural Science and Technology    2022, 24 (10): 23-34.   DOI: 10.13304/j.nykjdb.2021.0474
    Abstract276)   HTML10)    PDF (901KB)(115)       Save

    To screen the index closely related to drought resistance of upland cotton and varieties with high drought resistance, 203 upland cotton varieties resources from home and abroad were as materials. The agronomic traits and indexes of physiological and biochemical were determined in drought stress and normal irrigation treatments. The drought resistances of 203 varieties were comprehensively evaluated by grey correlation degree, comprehensive measurement of drought resistance, comprehensive drought resistance coefficient and weighted comprehensive drought resistance coefficient. The results showed that the close relationships between index and comprehensive measure of drought resistance (D value) were as followed, chlorophyll content > boll weight > lint percent > plant height > fruit branch > the frist node fruit branch > leaf area > height of the frist node fruit branch > proline content > fruit node > bolls number > yield per plant > molondialdehyde content > superoxide dismutase activity. It showed that chlorophyll content, boll weight, lint percentage, plant height, number of fruit branch, the first node of fruit branch, leaf area and the height of the first node of fruit branch were closed relationships with D value and could be as important indexes identified drought-resistant. The cluster analysis showed that 203 upland cotton varieties were divided into 5 types. Type Ⅰincluded 12 cotton varieties (such as Ekangmian 10, Ganmian 10, Turkmen land cotton, etc.) and showed high drought resistance, accounting 5.9%. Type Ⅱ included 62 cotton varieties (such as KK-1543, Yumian 15, Wanmian 8407, etc.) and showed middle drought resistance, accounting 30.5%. Type Ⅲ included 80 cotton varieties (such as Jinmian 6, Xinluzhong 48, Lumian 28, etc.) and showed drought tolerance, accounting 39.4%. Type Ⅳ included 35 cotton varieties (such as Yumian 17, 17N8, Nongken 5, etc.) and showed drought sensitive, accounting 17.3%. Type Ⅴ included 14 cotton varieties (such as Xinluzao 24, Xinluzao 29, Jimian 12, et al.) and showed high sensitive to drought, accounting 6.9%. The indexes and varieties of high drought resistance were screened, which provided theoretical and material support for drought resistant breeding of cotton.

    Table and Figures | Reference | Related Articles | Metrics
    Research on Change Trend and Risk of China’s Food Production
    Lili SONG, Ruitao ZHANG
    Journal of Agricultural Science and Technology    2023, 25 (2): 1-9.   DOI: 10.13304/j.nykjdb.2022.0855
    Abstract273)   HTML9)    PDF (1910KB)(117)       Save

    Food production is crucial to the national transportation and people’s livelihood, and food security is the top priority in governing the country. From grain production capacity and grain business entities, China’s food rations are self-sufficient and the planting structure has been further optimized. However, there are still realistic difficulties in grain production, such as tighter constraints on ecological resources, low enthusiasm of grain business entities to grow grain, and increase risks of uncertainty in international trade, which have brought considerable impact on China’s grain production. So this paper proposed to further implement the strategy of “storing grain on the ground, storing grain in technology”, cultivate new food production and operation entities to adapt to the new era, and improve the ability of risk prevention and control and subsidy guarantee to ensure the long-term sustainable food security in China.

    Table and Figures | Reference | Related Articles | Metrics
    Research Progress on Flowering Regulation and Flower Morphogenesis of Rose
    Zhiying XIONG, Rui YU, Ziyi HU, Yuman ZHANG, Qinglin LIU
    Journal of Agricultural Science and Technology    2023, 25 (2): 68-75.   DOI: 10.13304/j.nykjdb.2022.0098
    Abstract273)   HTML5)    PDF (1095KB)(186)       Save

    Rose has great ornamental value and economic value. Flowers is one of the important economic ornamental organs, flowering time and flower shape on the production and application have very important significance. As one of the few woody flowers continuous blooming, the research of rose flowering regulation and flower formation is of great significance. This article summarized the research progress from the flowering regulation pathway, flower bud differentiation, morphogenesis, and flowering regulation approach in recent years, hoping for ornamental flower crop development, flowering regulation and providing reference for design modification.

    Table and Figures | Reference | Related Articles | Metrics
    Functional Analysis of Cytochrome P450 Family GmCYP78A71 in Soybean Nodulation
    Zhanwu YANG, Hui DU, Xinzhu XING, Wenlong LI, Youbin KONG, Xihuan LI, Caiying ZHANG
    Journal of Agricultural Science and Technology    2023, 25 (1): 50-57.   DOI: 10.13304/j.nykjdb.2021.0843
    Abstract272)   HTML9)    PDF (2562KB)(81)       Save

    Soybean and rhizobia establish symbiosis in root nodules for symbiotic nitrogen fixation, which effectively relieves its dependence on nitrogen fertilizer in soil. Cytochrome P450 (CYP450), a heme monooxygenase, is involved in the synthesis and metabolism of many secondary metabolites such as plant signal molecules, plant hormones and flavonoids. In order to explore the function of GmCYP78A71 in nodule formation and nitrogen fixation in soybean, this study analyzed the structure of GmCYP78A71, and then analyzed its expression pattern and biological function. The results of qRT-PCR and GmCYP78A71 promoter fused GUS staining showed that GmCYP78A71 was specifically expressed in the nodules and the expression abundance increased gradually during nodule development with a peak in mature nodules; the number, fresh weight and nitrogenase activity of nodules of overexpressed transgenic composite plants significantly increased compared with the control, while the number, fresh weight and nitrogenase activity of nodules of RNAi hairy roots significantly decreased. Above results indicated that GmCYP78A71 played an important role in nodule growth and development and nitrogen fixation.

    Table and Figures | Reference | Related Articles | Metrics
    Current Situation and Strategy of Honeybee Genetic Resources Protection in China
    Xiao CHEN, Fuqing YU, Jian LU, Yazhou ZHAO, Jiandong AN
    Journal of Agricultural Science and Technology    2023, 25 (5): 1-7.   DOI: 10.13304/j.nykjdb.2022.0371
    Abstract269)   HTML7)    PDF (455KB)(239)       Save

    Honeybee genetic resources are rich in China. These resources have different characteristics. They are excellent germplasm resources and are basic materials for breeding. At present, there are 14 local varieties, 8 cultivated varieties, 8 introduced varieties, and 8 other bee resources in China. Among them, Chinese honeybee is the native bees in China,which is an indispensable original breeding material for cultivating new high-quality honeybee breeds, and is also a national protected species. The current situation of honeybee resources protection and existing problems of honeybees genetic resources protection in China were summarized, and the suggestions for honeybee genetic resources protection were put forward, which was of great significance to the development of honeybee genetic resources protection in the future.

    Table and Figures | Reference | Related Articles | Metrics
    Current Situation and Development Suggestion of National Modern Agricultural Industrial Science and Technology Innovation Center
    Hui YU, Xianwu LIU
    Journal of Agricultural Science and Technology    2023, 25 (1): 1-5.   DOI: 10.13304/j.nykjdb.2022.0872
    Abstract266)   HTML31)    PDF (401KB)(145)       Save

    To establish the Science and Technology Innovation Center (STIC) for modern agricultural industry is a major construction for the improvement of agricultural science and technology innovation system in China, which is of great significance for promoting the deep integration of science and technology and economy, accelerating the progress of agricultural science and technology, and realizing the self-reliance and self-improvement of high-level science and technology. This paper summarized the development status and successful experience of the STIC for national modern agricultural industry, analyzed the existing problems, and finally put forward development suggestions from the aspects of improving the achievement evaluation system, increasing the government support, innovating the system and mechanism, and strengthening the publicity and promotion.

    Table and Figures | Reference | Related Articles | Metrics
    Development Status and Prospects of Rice Industry in Heilongjiang Province
    Yingnan GU, Xin LIU, Jingyuan WANG, Xinyu DUAN, Ying HUANG, Qingjuan LIN, Yanxia LIU, Hongwen BI
    Journal of Agricultural Science and Technology    2023, 25 (12): 17-25.   DOI: 10.13304/j.nykjdb.2022.1005
    Abstract265)   HTML14)    PDF (1755KB)(235)       Save

    In recent years, the rice industry in Heilongjiang province has developed well in planting, production and marketing, but there are still some problems such as quality degradation and low efficiency of processing enterprises. In order to promote the development of high-quality rice industry in Heilongjiang province, and improve productivity and efficiency,based on the statistical yearbook data of Heilongjiang province, field survey information and literature data, this paper analyzed the change characteristics of rice variety breeding, production and planting, quality, processing and sales of japonica rice in Heilongjiang province from 2016 to 2021, put forward suggestions to accelerate the development of rice industry in Heilongjiang province, including the construction of research and innovation center of seed industry, the construction of green ecological demonstration area and the strengthening of rice processing industry, which provided a variety of feasible ideas for the development of rice industry in Heilongjiang province.

    Table and Figures | Reference | Related Articles | Metrics
    Organ Segmentation and Phenotypic Analysis of Soybean Plants Based on Three-dimensional Point Clouds
    Yitong XIAO, Shuai LIU, Chenlian HOU, Qi LIU, Fuzhong LI, Wuping ZHANG
    Journal of Agricultural Science and Technology    2023, 25 (8): 115-125.   DOI: 10.13304/j.nykjdb.2022.0861
    Abstract264)   HTML8)    PDF (3043KB)(148)       Save

    In order to solve the problem of high-throughput phenotypic measurements caused by clustering and mutual shading of leaves of multi-branched crops such as soybean, a method of organ segmentation and phenotypic parameter measurement based on three-dimensional(3D)point clouds of the plant was proposed. Firstly, multi-view images of soybean plants were collected at the branching stage and used 3D reconstruction technology to obtain dense point clouds of plants, filtered point cloud noise and restored the actual scale. Further, the difference of normals algorithm, the improved regional growth algorithm and the point clouds curvature feature were used to segment the organs of the plant. Finally, the leaf area, leaf width, leaf length, leaf inclination angle and stem diameter were extracted by using the oriented bounding box, improved triangulation and the nearest neighbor algorithm. The results showed that the average segmentation rate of canopy leaf point clouds after organ segmentation was 84.24%, and the segmentation rate of single leaf point clouds was higher than 95.29%, and the measured values of phenotypic parameters had strong correlation with the manually measured values. The coefficients of determination of leaf area, leaf width, leaf length, leaf inclination and stem diameter measurements and manual measurements were 0.987 9, 0.961 3, 0.962 6, 0.931 1 and 0.963 4, respectively, with root mean square errors of 0.541 7 cm2, 0.141 2 cm, 0.175 5 cm, 3.279 6° and 0.047 5 cm. The proposed method had a good segmentation effect on plants with leaves adhering to each other and provided an effective solution for organ segmentation and phenotypic parameter measurement of multi-branched crops.

    Table and Figures | Reference | Related Articles | Metrics
    Research Advance on Molecular Physiological Mechanisms of the Effect of Suboptimal Low Temperatures on Plant Growth and Nitrogen Nutrition
    Changzheng WU, Wenxuan PU, Song SHENG, Yucheng XIANG, Weiqin YANG, Wenrui LI, Pingjun HUANG, Laihua LIU
    Journal of Agricultural Science and Technology    2023, 25 (1): 16-25.   DOI: 10.13304/j.nykjdb.2021.0896
    Abstract261)   HTML11)    PDF (1482KB)(114)       Save

    Low temperatures at early spring is one of the environmental constrains affecting plant growth. Low-temperature stress results in a severe decrease in the crop yield and quality, as well as the effective utilization of plant nutrients including nitrogen. Relevant studies have focused mostly on the analysis of physiological and molecular regulatory networks of plant growth when temperature was lower than 15 ℃.Exogenous application of certain substances e.g. nitrogen fertilizer or hormone could improve plant cold tolerance, so this article reviewed the influence of the suboptimal temperature on growth phenotype of some major crops, physiological and metabolic change, and nitrogen use, summarized and discussed the biological mechanisms of plant response to the sub-optimum temperature in association with the regulation of nitrogen acquisition and utilization, which was expected to provide reference for future understanding of higher nitrogen use efficiency and its related molecular physiological mechanism under the sub-optimal low temperature.

    Table and Figures | Reference | Related Articles | Metrics
    Achievements and Prospects on China’s Seed Industry Development at Different Stages
    Pei XIE, Zihan SONG, Mingmin XIONG
    Journal of Agricultural Science and Technology    2022, 24 (10): 1-5.   DOI: 10.13304/j.nykjdb.2021.0969
    Abstract256)   HTML20)    PDF (423KB)(125)       Save

    Seed industry is related to agriculture, rural modernization, food security and people’s better life. This paper comprehensively reviewed the characteristics of seed industry development at 3 historical stages: initial stage, rapid stage and modern stage. The outstanding achievements of seed industry at the 3 stages were analyzed from 2 aspects of grain and agricultural product supply and breeding technology. The scientific and technological development direction of seed industry was put forward in strengthening the protection of germplasm resources, strengthening basic research, making breakthroughs in key technologies and cultivating important varieties, which was expected to provide reference for the development of seed science and technology.

    Reference | Related Articles | Metrics
    Application of Sludge Biochar in Soil Improvement
    Xudong WANG, Xuebing REN, Shu TANG, Qin GUO, Mengyao XUE, Peng JIN, Yunhua ZHANG
    Journal of Agricultural Science and Technology    2023, 25 (6): 165-173.   DOI: 10.13304/j.nykjdb.2021.1025
    Abstract256)   HTML7)    PDF (878KB)(100)       Save

    With the rapid development of industrialization and urbanization, sludge, as a by-product of sewage treatment, is increasing in yield. Organic pollutants and heavy metals in sludge taking some difficulties to make sludge harmless and resourceful. The biochar produced from sludge pyrolysis is a new way of sludge treatment in recent years, which has the advantages of stability, reduction and recycling. Sludge biochar is a kind of soil improvement material with good performance, which can improve the physical and chemical properties of soil, such as bulk density, pH, cation exchange capacity, heavy metal content, etc. In addition, Sludge biochar can also improve soil fertility and promote plant growth. This study summarized the composition of the sludge source and biochar sludge pyrolysis mode of production and characterization, and discussed the sludge biochar application of heavy metals on soil physical and chemical properties and the influence of mechanism. The research and application progress of single and cothermal sludge biochar were analyzed, and the main problems and future development direction of sludge biochar for soil improvement were put forward.

    Table and Figures | Reference | Related Articles | Metrics
    Scientific and Technological Innovation of Soybean Seed Industry in China:Current Situation and Strategy
    Wenyue WANG, Zhipeng YAO, Yang YU, Yiqiang GE
    Journal of Agricultural Science and Technology    2024, 26 (3): 1-6.   DOI: 10.13304/j.nykjdb.2024.0016
    Abstract255)   HTML26)    PDF (3619KB)(219)       Save

    China is a major soybean consumer and importer. Promoting the revitalization of the soybean industry and strengthening the technological innovation of the soybean seed industry have great significances for ensuring China’s food and safety. Based on the data of China’s soybean planting area, export, and import volume since 2016 and relevant research advances, this paper analyzed the situation challenges faced by China’s soybean industry, such as large rigid demand and long-term dependence on imports, low average yield level and limited planting area, and potential risks faced by imports that would exist for a long time and are not easy to share. This paper briefly described the scientific and technological innovation results of China’s soybean seed industry during the “13th Five-Year” Plan period, and systematically analyzed the problems faced by the scientific and technological innovation of China’s soybean seed industry, such as low research level of germplasm resources, insufficient original scientific and technological innovation ability, imperfect commercial breeding system, lagging intellectual property protection system. It also put forward countermeasures and suggestions to promote the scientific and technological innovation and development of China’s soybean seed industry, in order to promote China’s soybean seed industry technology self-reliance development.

    Table and Figures | Reference | Related Articles | Metrics
    Application Status and Development Trend of Computational Fluid Dynamics in Agricultural Engineering
    Yao XIAO, Mingliang WU
    Journal of Agricultural Science and Technology    2023, 25 (8): 1-9.   DOI: 10.13304/j.nykjdb.2022.0300
    Abstract250)   HTML22)    PDF (2130KB)(307)       Save

    Computational fluid dynamics (CFD) is a method for systematic analysis based on computer numerical calculation and image display. It is often used to analyze the flow mechanisms of gas-solid and gas-liquid two-phase flow in agricultural equipment. It is a new method for digital design of agricultural equipment, which has good application prospects. The commonly used calculation models of CFD in simulating agricultural materials and its application in agricultural equipment were summarized.Combined with the application of agricultural engineering, the future development trend of CFD was proposed on how to adapt to the future development needs of agricultural engineering. The results indicated that, due to the complex types of operation objects and easy damage of agricultural equipment, it was necessary to fully consider the physical characteristics of the operation objects and the relationship among components. The multidisciplinary coupling analysis, fine modeling and real-time prediction of high fidelity simulation would be the future development trend of CFD.

    Table and Figures | Reference | Related Articles | Metrics
    Research Progress on Innovation and Utilization of Livestock and Poultry Germplasm Resources
    Zifeng GUO, Lei HUANG, Kui LI
    Journal of Agricultural Science and Technology    2023, 25 (4): 14-22.   DOI: 10.13304/j.nykjdb.2022.0744
    Abstract250)   HTML8)    PDF (583KB)(239)       Save

    Livestock and poultry germplasm resources are the basis of germplasm innovation. It is a great significance to improve the core competitiveness of Chinese animal husbandry in the international market, increase farmers’ income, and realize the sustainable development of animal husbandry by independent cultivation of good seed lines with excellent traits and stable inheritance. The innovation of livestock and poultry germplasm resources is to optimize the germplasm characteristics through modern biological breeding methods, so that the breeding offspring can preserve more genetic information of good parental traits and enhance the economic value of livestock and poultry products. The utilization of livestock and poultry germplasm resources is mainly to supply human nutrition and production needs in the form of meat, milk, eggs and other livestock and poultry products. At present, Chinese germplasm resources are very rich, but there are still deficiencies in the innovation and utilization of germplasm resources. In this review, we summarized the basic situation and existing problems of the conservation and utilization of livestock and poultry germplasm resources, and breeding recommendations for new germplasm of livestock and poultry was expounded. On this basis, it was prospected the breeding goal, breeding considerations and industrial development of new germplasm of livestock and poultry. We hope to provide suggestions for the subsequent breeding of livestock and poultry breeds and the rational utilization of various livestock and poultry germplasm.

    Reference | Related Articles | Metrics
    Research Progress of Autotoxic Secretions ​in Crops Replant Successive Cropping Obstacles
    Fuhui CHEN, Naikun SHEN, Mingguo JIANG, Yibing WANG
    Journal of Agricultural Science and Technology    2022, 24 (10): 125-132.   DOI: 10.13304/j.nykjdb.2021.0889
    Abstract247)   HTML4)    PDF (507KB)(140)       Save

    Under the background of facility agriculture, replant disease is widespread in grain crops, such as food crops, cash crops, vegetables, trees, Chinese herbal medicines and other plants, which seriously restricts the sustainable development of planting industry. A large number of studies have confirmed that autotoxicity is one of the main causes of replant disease, so the paper systematically introduced the sources, types, characteristics and mechanism of autotoxicity, summarized research methods such as extraction of autotoxic substances, activity detection, isolation and screening of functional degradation strains, and analyzed the abatement measures such as soil improvement, cultivation mode improvement, biological control and others. As well as, the problems existing in the research and development research emphasis in the future were putted forward. It would provide reference for the in-depth study of replant disease and technical support for the green and healthy development of facility agriculture.

    Reference | Related Articles | Metrics