摘要
研究了氮肥运筹对小麦产量和氮肥利用率的影响,结果表明:以控释BB肥处理最佳,达8070kg/hm2。控释尿素基肥处理和33.3%氮肥基肥+33.3%氮肥拔节+33.3%氮肥抽穗期处理产量分别为7796kg/hm2和7978kg/hm2,三处理之间没有达到1%极显著水平。在施用普通尿素的各个处理中,33.3%氮肥基肥+33.3%氮肥拔节+33.3%氮肥抽穗期处理的氮肥利用率最高,为36.8%,可见适当的施肥方式也能提高氮肥的利用率。控释尿素基肥处理和控释BB肥基肥处理的氮肥利用率分别为45.7%和47.3%,均高于施用普通尿素的各个处理,控释BB肥基肥处理的氮肥利用率高于控释尿素基肥处理的氮肥利用率。
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/hm^2 of BB fertilizer,the second wheat yield is7 978 kg/hm^2 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/hm^2 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.
出处
《河南化工》
CAS
2010年第19期38-40,共3页
Henan Chemical Industry
基金
"十一.五"国家科技支撑计划(2006BAD10B07)
(2008BADA4B07)
河南省科技攻关项目(092102110041)
关键词
小麦
氮肥运筹
产量
氮肥利用率
wheat
nitrogen application
yield
nitrogen use efficiency
