安徽农业科学2011，Vol.39Issue(20)：12034-12035,2.
江汉平原中稻直播适宜播种量研究
Study on the Optimum Seeding Rate with Direct Seeding of Medium Rice on Jinghan Plain
摘要
Abstract
[Objective] The aim was to optimize the sowing rate of medium rice direct seeding on Jianghan Plain. [ Method] The optimum sowing rate of fengliangyouxiang No. 1 was screened out by direct seeding trails of six different sowing rate form 22. 5 、30. 0、37. 5、45. 0、52. 5、 60. 0 kg/hm2. [ Result] Seeding rate of rice influenced growth period and yield and economic coefficient and ralative economic output. When the seeding rate were 37.5 and 45.0 kg/hm2, the growth period were the longest. When the seeding rate was 37.5 kg/hm2. The yeild was significantly higher than the others and the economic coefficient was significantly higher than the treatment with the 60.0 kg/hm2 seeding rate. The relative economic output of 30.0 kg/hm2 was the highest. [Conclusion] The seedling amount had significant impacts on the growth peri od , agricultural property, economy property, yield and relative economy output. But there were differences of the optimum range of seedling a-mount of different properties.关键词
江汉平原/中稻/直播/播种量Key words
Jianghan plain/Medium rice/ Direct seeding/ Sowing rate分类
农业科技引用本文复制引用
许少华,邢丹英,李鹏飞,张艳霞,罗耀美,袁志华,朱诗汉,牟方勇..江汉平原中稻直播适宜播种量研究[J].安徽农业科学,2011,39(20):12034-12035,2.基金项目
国家科技部"十一五"重大科技专项(2006BAD02A02). （2006BAD02A02）
