土壤磷钾供应能力研究

›› 2007, Vol. 9 ›› Issue (2): 57-60.

土壤磷钾供应能力研究

彭正萍[1] 李迎春[1] 薛世川[1] 马峙英[2] 高菲[1] 姜孟辉[1]

[1]河北农业大学资环学院,保定071001 [2]河北农业大学农学院,保定071001

收稿日期:2007-01-16 修回日期:2007-02-11 出版日期:2007-04-15 发布日期:2009-09-29
作者简介:彭正萍(1974一)|女|博士|副教授；主要从事植物营养生理与施肥研究。E—mail：pengzhengping@sohu·com
基金资助:
黄淮海中北部（河北）小麦玉米两熟丰产高效技术集成研究与示范项目（2006BAD02A08）,国家粮食丰产科技工程河北省课（2004BA520A07）和河北农业大学博士科研启动基金资助.

Study on the indigenous phosphorus and potassium supply capacity of soils

PENG Zheng-ping, LI Ying-chun| XUE Shi-chuan| MA Zhi-ying| GAO Fei| JIANG Meng-hui

1. College of Resources and Environmental sciences, Hebei Agricultural University, Baoding 071001, China; |2. College of Agronomy, Agricultural University of Hebei, Baoding 071001, China

Received:2007-01-16 Revised:2007-02-11 Online:2007-04-15 Published:2009-09-29

摘要/Abstract

摘要：

为给冬小麦-夏玉米高产提供合理施肥和培肥土壤的科学依据,采用田间试验法,在河北省宁晋县大陆村镇试验地,研究该地土壤磷钾供应能力。结果表明,冬小麦季,土壤磷素贡献率达100%,钾素贡献率为94.5%;不施肥处理的土壤供P、K量分别为55.4和139.2 kg/hm^2,NP配施土壤供K量比对照提高15.7%;NK配施土壤供P量比对照提高6.3%。施入钾肥改善了冬小麦的株高、基本苗数、分蘖数、总茎数、成穗数、穗粒数和最终产量,提高土壤的钾素营养。增施磷肥,不能增加冬小麦产量,只能增加生产成本,造成土壤中磷的残留增多。对照区土壤中的磷钾在支持6 750 kg/hm^2的小麦产量后,还能继续满足9 810 kg/hm^2的夏玉米需求,说明供试土壤补钾能显著提高冬小麦产量,土壤中的磷钾不是限制夏玉米产量的主要因素。

关键词: 土壤磷钾供应能力冬小麦夏玉米

Abstract:

For the scientific gist of reasonable fertilization and fertility, soil to winter wheat and summer maize, the indigenous phosphorus and potassium supply capacity of soils in Dalucun of Ningjin, Hebei province were studied under the field conditions. The results showed that the P contribution rate to winter wheat yield was above 100% and 94.5% for K. The supplying amount of P and K in CK were 55.4 and 139.2 kg/hm^2, respectively. The soil K supplying in the treatment of NP was 15.7% higher than that in CK, while the soil P supplying amount in the NK treatment was 6.3% higher than that in CK. Kfertilizer applying improved the height, basic seedling, tiller number, total stem number, efficient spike, grain number per spike and yield of winter wheat, also enhanced soil K nutrient. Increase P fertilizer applying could not enhance the yield of winter wheat, only increase the production cost and make more P remnant in soil. Soil P and K in CK provided some nutrient for the yield 6750 kg/hm^2 of winter wheat and 9810 kg/hm^2 of summer maize. The above analysis represented that supplying K fertilizer to soil significantly improved the yield of winter wheat, but for maize P and K in the soil were not the main limiting factors.

Key words: Indigenous phosphorus and potassium supply capacity of s oil;winter wheat, maize

中图分类号:

S143 S158

彭正萍[1] 李迎春[1] 薛世川[1] 马峙英[2] 高菲[1] 姜孟辉[1]. 土壤磷钾供应能力研究[J]. , 2007, 9(2): 57-60.

PENG Zheng-ping, LI Ying-chun| XUE Shi-chuan| MA Zhi-ying| GAO Fei| JIANG Me. Study on the indigenous phosphorus and potassium supply capacity of soils[J]. , 2007, 9(2): 57-60.