期刊论文

中文

作物研究

1001-5280

2008

22

4

214-219

10.16848/j.cnki.issn.1001-5280.2008.04.003

农业部超级稻配套栽培技术开发与技术集成项目 湖南省超级稻“三定”栽培技术研究项目.

本校为第一机构

为了探讨氮肥施用量和施用方法对杂交稻产量和氮素利用效率的影响,2001～2003年在湖南省宁乡县回龙铺镇进行了大田栽培试验.结果表明:改进施氮处理的氮肥用量为100～120 kg/hm2,比农民习惯施肥减少38.9%～47.6%,产量增加0.48～1.48 t/hm2,增幅6.32%～27.3%,减氮增产的效果显著;获得最高产量的适宜氮肥用量为99～147.5 kg/hm2,成熟期氮素吸收量为146.9～194.3 kg/hm2.改进的施氮处理AEN平均为10.6～14.3 kg/kg,比农民习惯施肥增加7.0～10.7 kg/kg;PFPN平均为65.2～96.8 kg/kg,比农民的习惯施肥增加34.1～65.7 kg/kg;REN平均为68.5%～76.2%,比农民习惯施肥增加14.1%～21.8%,增幅均达到显著或极显著...

In order to explore the effects of nitrogen （N） rate and application methods on the yield and N use efficiency in hybrid rice,the field cultivation experiment was conducted in Huilongpu Town,Ningxiang County,Hunan Province in 2001 -2003. The results showed that the N rate of modified N treatment （MNT） was 100- 120 kg/hm^2 which was reduced by 38.9-47.6% compared with farmers＇ practice. The yield of MNT was increased 0. 48- 1.48 t/hm^2 and by 6. 32%- 27.3% compared with farmers＇ practice. The effect of MNT on increase in yield and decrease...