[1]王生录.黄土高原旱地磷肥残效及利用率研究[J].水土保持研究,2003,10(01):71-75.
　WANG Sheng-lu.Study on Residual Effect of Phosphorus Fertilizer and Use Efficiency in Dryland of Loess Plateau[J].Research of Soil and Water Conservation,2003,10(01):71-75.
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黄土高原旱地磷肥残效及利用率研究

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 10 期数: 2003年01期 页码: 71-75 栏目: 出版日期: 1900-01-01
Title:
Study on Residual Effect of Phosphorus Fertilizer and Use Efficiency in Dryland of Loess Plateau
作者:
王生录
甘肃省农业科学院旱地农业研究所, 甘肃兰州 730070
Author(s):
WANG Sheng-lu
Dryland Agriculture Institute of, Gansu Academy of Agro sciences, Lanzhou 730070, Gansu, China
关键词:
磷肥; 分配方式; 残效; 利用率
Keywords:
Phosphorus fertilizer; distribution manners; residual efficiency; use ration
分类号:
S143.2
摘要:
连续4年的冬小麦定位试验证明，旱地施磷（P2O5）量在75～300kg/hm2时，小麦的增产率基本随磷肥用量的增加而提高，但P2O5的增产作用和磷肥利用率却随磷肥用量的增加而降低；磷肥不仅当季增产显着，而且后效明显，第1季施磷后在第4季P2O5施用量75kg/hm2的增产率为53.9%，施用量150kg/hm2的增产率为64.3%，施用量300kg/hm2的增产率为109.6%，1kgP2O5累计增产小麦依次为38.7，25.5，15.1kg，分别为第1次效果的2.26倍、2.38倍和2.85倍。磷肥的利用率随用量增加而降低，当季利用率低，累计利用率高，施P2O575～300kg/hm2时，当季利用率为12.0%～4.3%，累计利用率达25.0%～12.4%。
Abstract:
Long term oriented experiment shows that if applying P (P2O5) is 75~300 kg/hm2 in dryland through planting winter wheat for 4 years, increasing ration is enhanced with use dose, but increase function of P2O5 and use ratio of P fertilizer fall with add of application.Not only increases Phosphorus fertilizer the yield of temporal season but also later efficiency is evident.Increase production ration of applying P 75 kg/hm2, 150 kg/hm2, and 300 kg/hm2 in fourth season is respectively 53.9%, 64.3%, and 109.6% after applying P in the first season, so increase yield of 1 kg P2O5 is respectively 38.7 kg, 25.5 kg, and 15.1 kg, which are 2.26, 2.38 and 2.85 times of first applying P.Use ration of P fertilizer is low in that season, but accumulation use ration is high, such as use ration is 12.0% ～4.3% in that season and accumulation use ration 25.0%～12.4% with P 75～300 kg/hm2.

参考文献/References:

[1] 张兴高, 崔明九, 武天云, 等.旱塬土壤施肥培肥技术研究[A].王吉庆.陇东高原半湿润偏旱农业综合发展研究[M].兰州:甘肃科学技术出版社, 1995.148-155.
[2] 山仑, 等.黄土高原旱地农业的理论与实践[M].北京:科技出版社, 1993.

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备注/Memo

收稿日期:2002-11-25
基金项目:国家科技攻关项目（2001BA508B18）
作者简介:王生录（1962- ），男，甘肃临泽人，副研究员，主要从事旱地土壤施肥培肥研究工作。

更新日期/Last Update: 1900-01-01