摘要
田间小区试验结果表明，优化施肥能提高作物产量及氮肥利用率，节约氮肥38．96％～46．12％，且随着土壤肥力提高，增产更稳定。优化施肥方案能降低土壤硝态氮的累积并减少其流失，从而减轻地下水污染，保护生态环境。
The experimental results showed that the optimum fertilization could increase the grain yield and nitrogen use efficiency, and save N fertilizer by 38.96% -46.12%. As the soil fertility increased, the increase of grain yield was more steady. Optimum fertilization could reduce the accumulation and loss of soil nitrate nitrogen and protect the groundwater and environment.
出处
《山东农业科学》
2008年第9期55-57,60,共4页
Shandong Agricultural Sciences
基金
农业部"948"重大项目"养分资源综合管理技术引进与中国技术体系的建立和应用"(2003-Z53)
关键词
优化施肥
小麦/玉米间作
氮利用效率
硝态氮
Optimum fertilization
Intercropping of wheat and maize
N use efficiency
Nitrate nitrogen
