Journal of Agricultural Science and Technology ›› 2025, Vol. 27 ›› Issue (1): 201-210.DOI: 10.13304/j.nykjdb.2023.0302

• BIO-MANUFACTURING & RESOURCE AND ECOLOGY • Previous Articles    

Effect of New Degradable Soil Water-retaining Agent on Growth and Development of Maize Seedlings Under Water Stress at Seedling Stage

Yumang ZHANG1,2(), Guijuan CHEN3, Hongyan CHANG1, Yongheng WANG1, Shuxia LIU1(), Yunxiu YING2   

  1. 1.College of Resources and Environment,Jilin Agricultural University,Changchun 130118,China
    2.School of Life Science,Changchun Sci-Tech University,Changchun 130600,China
    3.Jilin Huiquan Agricultural Science and Technology Co. ,Ltd. ,Changchun 130000,China
  • Received:2023-04-18 Accepted:2023-12-05 Online:2025-01-15 Published:2025-01-21
  • Contact: Shuxia LIU

水分胁迫下新型土壤保水剂对玉米苗期发育的影响

张余莽1,2(), 陈贵娟3, 常洪艳1, 王永恒1, 刘淑霞1(), 应允秀2   

  1. 1.吉林农业大学资源与环境学院,长春 130118
    2.长春科技学院生命科学学院,长春 130600
    3.吉林省汇泉农业科技有限公司,长春 130000
  • 通讯作者: 刘淑霞
  • 作者简介:张余莽 E-mail: zhangym198410@ 163.com
  • 基金资助:
    吉林省重点研发计划项目(20200403069SF)

Abstract:

Water-retaining agent has low degradability in soil and will cause harm to soil environment. In this study, polyaspartic acid and bentonite were used as raw materials to prepare a new type of degradable soil water-retaining agent. 2 groups of water treatment were set up including water stress treatment and normal irrigation treatment,under the 2 groups of water treatment, commercial humic acid water retaining agent(TA) and 12.5(TB1), 17.5(TB2), 22.5(TB3), 27.5(TB4), 32.5 kg·hm-2 (TB5) new soil water retaining agent were applied respectively, using no water retaining agent as control (CK), and the effects were discussed on the growth and development of maize seedlings. The results showed that the application of water retaining agent could increase the soil moisture content in maize seedling stage. The best effect was achieved when the amount of water retaining agent was 22.5 kg·hm-2, and the effect was significantly inhibited when the amount of water retaining agent was 32.5 kg·hm-2. Under water stress conditions, plant height, stem diameter,chlorophyll content and superoxide dismutase, peroxidase and catalase activities of each treatment treated with water retaining agent were significantly increased compared with CK; and the contents of malondialdehyde and proline were reduced. Among them, the water retaining agent dosage of 22.5 kg·hm-2 (TB3) had the best effect. Above results showed that the effect of the new soil water retaining agent was obviously better, and it would further promote the agricultural water saving in China.

Key words: degradable soil water-retaining agent, water stress, maize seedling, physiological indicator

摘要:

保水剂在土壤中降解能力低,会对土壤环境产生危害,利用聚天冬氨酸和膨润土为原料,制备了新型的可降解土壤保水剂。设置水分胁迫处理和正常灌溉处理2组水分处理,在2组水分处理下分别施用市售腐殖酸保水剂(TA)和12.5(TB1)、17.5(TB2)、22.5(TB3)、27.5(TB4)和32.5 kg·hm-2(TB5)的新型土壤保水剂,以不施用保水剂为对照(CK),探讨其对玉米苗期生长发育的影响。结果表明,施用保水剂在玉米苗期可提高土壤含水量,当保水剂加入量为22.5 kg·hm-2效果最好,保水剂用量为32.5 kg·hm-2时对玉米出苗有显著抑制作用;在水分胁迫条件下,施用保水剂各处理的株高、茎粗、叶绿素含量和超氧化物歧化酶、过氧化物酶、过氧化氢酶活性均显著高于CK;同时施用保水剂能显著降低丙二醛和脯氨酸含量;其中,以保水剂用量为22.5 kg·hm-2(TB3)效果最佳。以上结果表明,新型土壤保水剂效果明显,对我国的农业节水有一定的推进作用。

关键词: 可降解土壤保水剂, 水分胁迫, 玉米苗期, 生理指标

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