湘东三熟制油菜直播播种量的研究
HUNAN AGRICULTURAL SCIENCES（2010）
Abstract
在播种量分别为1.5、3、4.5、6T和7.5 kg/hm2的5个处理中,以播种量4.5 kg/hm2和6 kg/hm2的产最较高.其密度分别为31.03万株/hm2和36.14万株/hm2.在秋早严重或迟播条件下,适当加大播种量可保障田间密度,为夺取高产奠定基础,三熟制栽培的播种量以4.5～6 kg/hm2较为适宜,可确保田间密度达到30万～37.5万株/hm2,其产量与移栽油菜基本相当.
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