摘要
水稻旱直播氮肥不同施用量试验结果表明：施氮量（纯N）低于270kg／hm2时，水稻单产随施氮量的增加而增加；施氮量高于360kg／hm2时，水稻单产随施氮量的增加而减少；水稻旱直播全生育期最佳施氮量以225-255kg／hm2为适宜。
The result of the experiment of different nitrogen fertilizer application amount for dry direct seeding rice shows that when the nitrogen fertilizer （pure N） application amount is lower than 270 kg/hm2 the yield of rice will increase with the increase of nitrogen fertilizer application amount and when the nitrogen fertilizer （pure N） application amount is higher than 360 kg/hm2 the yield of rice will decrease with the increase of nitrogen fertilizer application amount. The optimal nitrogen application amount for direct seeding rice during the whole growth period should be 225-255 kg/hm2.
出处
《宁夏农林科技》
2012年第11期27-28,共2页
Journal of Ningxia Agriculture and Forestry Science and Technology
基金
现代农业产业技术体系建设专项(CARS-01-84)
关键词
水稻
旱直播
氮肥
施用量
产量
Rice
Dry direct seeding
Nitrogen fertilizer
Application amount
Yield
