摘要
为探明不同地力和不同养分管理模式对早稻产量及氮肥利用率的影响,采用田间小区试验,在高中低3种地力水平的稻田中设计了3种养分管理模式,研究了不同地力水平和养分管理模式下早稻产量及氮肥利用率的差异。结果表明,施用氮肥对水稻产量的影响十分明显,施氮与不施氮的产量差异显著;且最佳养分管理模式较农民习惯养分管理模式更能显著提高早稻产量和有效提高氮肥利用率,在不同地力的田块上最佳养分模式也表现出较好的增产效果和较高的氮肥利用率。
In order to find out the impacts of different soil fertility levels and nutrient management models on yield and nitrogen use efficiency of early-rice,three different nutrient management models were designed for three different fertility levels（high,medium and low） to study the differences of yield and nitrogen use efficiency of early rice under different nutrient management models and different fertility levels.The results showed that： in comparison with non-using N fertilizer,using N fertilizer could significantly improve the yield of early-rice,and the difference between them was significant;in comparison with peasants＇ fertilizing habits,the best nutrient management model could highly increase the yield and nitrogen use efficiency of early-rice,and it also performed a great yield-increasing effect and higher nitrogen use efficiency in paddy fields with different fertility levels.
出处
《湖南农业科学》
2011年第6期79-81,共3页
Hunan Agricultural Sciences
基金
公益性行业(农业)科研专项(201103003)
湖南省普通高校重点实验室开放基金项目(09K050)
湖南农业大学稳定人才基金项目(09WD52)
关键词
地力水平
养分管理模式
产量
氮肥利用率
soil fertility level
nutrient management model
yield
nitrogen use efficiency
