干旱地区农业研究2013，Vol.31Issue(2)：157-163,7.
不同施肥方式对垄沟灌溉水氮分布的影响
Influence of different fertilizer methods on distribution of water and nitrogen under ridge and furrow irrigation
摘要
Abstract
In order to probe the influence of different fertilizer methods (no fertilizer, furrow fertilizer, ridge bottom fertilizer, ridge top fertilizer) on distribution of water and nitrogen under ridge and furrow irrigation, simulating experiment of ridge and furrow irrigation was carried out. The results showed that: The soil water first infiltrate from furrow and during the process of soil water redistribution, the soil water in ridge increased obviously. Fertilizer method nearly not influent the soil water movement and distribution. The distribution of NO3- - N is closely related with the soil water. Different fertilization methods effects the migration of N03 - - N at a large extent. In addition, ridge bottom fertilizer or ridge top fertilizer can reduce soil NO3- - N leaching effectively. To 40 cm soil depth, NO3- - N content is only 7 mg ·kg -1 , mostly distributed in profile. However, Since the adsorption of the soil surface, NH4 + - N accumulated in the fertilizer area, appearing peak. In the redistribution process, the content of NH4 + - N in ridge top fertilizer is higher than in ridge bottom fertilizer.关键词
垄沟灌溉/施肥方式/土壤含水量/硝态氮含量/铵态氮含量Key words
ridge and furrow irrigation/ fertilizer method/ soil water content/ NO3- - N content/ NH4 + - N contentb分类
农业科技引用本文复制引用
王贺贺,吴普特,赵西宁,陈小莉,王自奎,刘燕芳..不同施肥方式对垄沟灌溉水氮分布的影响[J].干旱地区农业研究,2013,31(2):157-163,7.基金项目
国家科技支撑计划课题(2011BAD29B09) （2011BAD29B09）
国家自然科学基金项目(31172039) （31172039）
西北农林科技大学基本科研业务费和青年学术骨干专项资金资助 （）
