2010•Henan Chemical IndustryRequires access
Effects of Wheat Yield and Nitrogen Use Efficiency of Nitrogen Application in Chao Soil Region
Xin Zhang
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Abstract
The experiment of nitrogen application on wheat yield and nitrogen use efficiency is conducted.The result shows that the best treatment of wheat yield is 8 070 kg/hm2 of BB fertilizer,the second wheat yield is 7 978 kg/hm2 of N33.3%+ N33.3% +N33.3%(N33.3% as basal and N33.3% top-dressed,and N33.3% Green up-dressed),the third wheat yield is 7 796 kg/hm2 of controlled-release urea.There's no obvious difference among the three treatments.Nitrogen use efficiency of BB fertilizer and controlled-release urea are better than N33.3%+ N33.3% +N33.3%.Nitrogen use efficiency of N33.3%+ N33.3% +N33.3% is the highest among treatments of base to dressing ratio of nitrogen fertilizer.