油菜高产新途径—秋发栽培
文献类型: 中文期刊
作者: 赵合句;李光明;李效德;李金树;李培武
作者机构:
期刊名称:湖北农业科学
ISSN: 0439-8114
年卷期: 1988 年 09 期
页码: 17-18+23
摘要: 一、秋发的概念及其与高产的关系 80年代初,我们在研究油菜高产的过程中,发觉亩产200公斤以上的油菜到秋末(11月底)即已发棵,植株绿叶达9—10片,越冬前(12月底)植株绿叶有12—13片,叶面积指数2.5以上,每亩植株干重250公斤左右。我们将这种油菜称为秋发生长型。试验表明,秋发油菜产量高。1980年我们在湖北广济县进行大田对比试验结果,秋发型油菜亩产213.4公斤,比冬发型(9—10叶越冬)亩产166.9公斤增长27.9%,亩增菜籽46.5公斤;比冬壮型(7—8叶越冬)亩产123.4公斤增长72.9%,亩增菜籽90.0公斤。1987年在四川绵竹县试验,秋发型亩产211.4公斤,比冬发型亩产157.4公斤增长34.3%,亩增菜籽54.0公斤;超秋发型(15叶越冬)
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