秸秆还田后水稻生长需氮量研究  

Research on Amount of Nitrogen Necessary for Rice Growth after Returning Straw to Fields

作　　者：许爱霞[1] 于倩倩[1] 王艳蓉[1] 李莲[1] 

机构地区：[1]江苏省泰州市姜堰区农业委员会,江苏泰州225500

出　　处：《安徽农业科学》2017年第31期23-24,28,共3页Journal of Anhui Agricultural Sciences

摘　　要：[目的]筛选秸秆还田配施化学氮肥最佳方案。[方法]试验设置7个秸秆还田配施化学氮肥方案,考察不同处理对土壤养分、水稻产量及其结构的影响。[结果]秸秆还田后施纯氮315 kg/hm^2时,产量最高,达9 600.90 kg/hm^2。[结论]秸秆还田后配施315 kg/hm^2氮能满足秸秆腐解与水稻生长的需要,该方案具有广泛的应用价值。[ Objective]To select the best scheme of nitrogen fertilizer application after returning straw to fields. [ Method] Seven straw mulc-hing plus nitrogen fertilizer treatments were conducted in the experiment, the effects of different treatments on soil nutrients, rice yield and structure were investigated. [ Result] The yield would be the highest and up to 9 600. 90 kg/hm2 when pure nitrogen was applied at a concen-tration of 315 kg/hm2 after straw mulching. [ Conclusion] Application of 315 kg/hm2 nitrogen fertilizer after returning straw to fields can meet the needs of straw decomposition and rice growth.

关 键 词：秸秆还田 氮肥 水稻生长 

分 类 号：S511[农业科学—作物学]