摘要
研究缓释氮肥含量对水稻产量及氮肥利用率的影响,为水稻高效生产,以及水稻缓释肥在水稻生产上的应用提供理论依据。通过大田试验,对不施用氮肥(T1)、常规施肥(T2)和缓释氮肥(T3~T6)进行对比试验,缓释氮肥含量设5%、10%、15%和30%共4个梯度。结果表明:含15%缓释尿素的水稻缓释肥对水稻产量及氮肥利用率影响最大,较常规施肥增产8.38%,氮肥利用率提高2.55%。缓释氮肥在相同施氮水平下,可代替普通化肥,能有效提高水稻产量和氮肥利用率,含15%缓释尿素的水稻缓释肥对水稻增产增收效果最佳。
Effects of slow-release nitrogen fertilizer on rice yield and nitrogen use efficiency were studied,which would provide a theoretical basis for slow-release fertilizer application in rice production and high efficiency rice production.No application of nitrogen fertilizer(T1),conventional fertilization(T2)and slow-release nitrogen fertilizer(T3-T6)were compared in the field experiment.The slowrelease nitrogen fertilizer was set 5%,10%,15% and 30% slow-release urea levels.The results showed that rice slow-release fertilizer containing 15%slow-release urea increased rice yield and nitrogen use efficiency by 8.38% and 2.55%,respectively compared with conventional fertilization,showing the greatest promotion to rice yield and nitrogen use efficiency.Under the same nitrogen application level,slow-release nitrogen fertilizer instead of ordinary chemical fertilizer can effectively increase rice yield and nitrogen use efficiency.In particular,rice slow-release fertilizer containing 15% slow-release urea has the best effect on rice yield and income increase.
作者
刘文
谭美
江涛
戴美玲
向铁军
LIU Wen;TAN Mei;JIANG Tao;DAI Mei-ling;XIANG Tie-jun(Hunan Gold Leaf Public Expectation Technology Company Limited,Linxiang 414300,PRC)
出处
《湖南农业科学》
2019年第11期52-54,58,共4页
Hunan Agricultural Sciences
基金
国家重点研发计划项目(2017YFD0200705)
关键词
水稻
缓释氮肥
产量
氮肥利用率
rice
slow-release nitrogen fertilizer
yield
nitrogen use efficiency
