超级杂交晚稻缓释氮肥最佳用量研究  

Study on the rate of slow- release nitrogen fertilizer for super hybrid late rice

作　　者：周静[1,2] 马国辉[1] 龙继锐[1,2] 陈敏 孙健 易祖凡 刘习中 

机构地区：[1]湖南杂交水稻研究中心,湖南长沙410125 [2]湖南农业大学农学院,湖南长沙410128 [3]浏阳市永安农技站,湖南浏阳410323 [4]攸县农业局,湖南攸县412300

出　　处：《磷肥与复肥》2009年第1期80-82,共3页Phosphate & Compound Fertilizer

基　　金：湖南省"十一五"农业重大专项(2006NK1001)

摘　　要：采用集成栽培模式和农民习惯栽培模式,在5个施氮量的处理下,研究了缓释氮肥不同用量对超级杂交晚稻生长发育和产量的影响,并建立了产量与纯氮施用量的数学模型。结果表明:超级杂交晚稻的最佳施纯氮量和较经济的施纯氮量均为180 kg/hm2,此时2种栽培模式的产量均最高,分别为8.76和7.59 t/hm2。The effects of 5 different slow-release nitrogen fertilizer rates on the growth and grain yield of late rice are studied under 2 cultivation modes both of the conventional and the compositive cultivation, and the relationship of N rate and grain yield is deduced. The results show that the optimal N rate of 180 kg/hm^2 is more economical, with the yield of compositive cultivation mode of 8.76 t/hm^2 and yield of conventional cultivation mode of 7.95 t/hm^2.

关 键 词：超级杂交晚稻 缓释氮肥 最佳施氮量 

分 类 号：S511.33[农业科学—作物学]