应用生态学报2012，Vol.23Issue(5)：1326-1332,7.
播种期和种植密度对冬油菜籽粒产量和含油率的影响
Effects of sowing date and planting density on the seed yield and oil content of winter oilseed rape
摘要
Abstract
A field experiment was conducted to investigate the effects of different sowing date and planting density on the seed yield and seed oil content of winter oilseed rape ( Brassica napus). Sowing date mainly affected the seed yield of branch raceme, while planting density affected the seed yields of both branch raceme and main raceme. The seed oil content was less affected by sowing date. The proportion of the seed yield of main raceme to the seed yield per plant increased with increasing planting density, and the seed oil content of main raceme was about 1 % higher than that of branch raceme. Consequently, the seed oil production per plot increased significantly with increasing planting density. In the experimental region, the sowing date of winter oilseed rape should be earlier than mid-October. When sowing in late October, the seed yield would be decreased significantly. A planting density of 36-48 plants ·m-2 could improve the seed yield and oil content of winter oilseed rape.关键词
冬油菜/播种期/种植密度/籽粒产量/产油量Key words
winter oilseed rape/ sowing date/ planting density/ seed yield/ oil production.分类
农业科技引用本文复制引用
张树杰,李玲,张春雷..播种期和种植密度对冬油菜籽粒产量和含油率的影响[J].应用生态学报,2012,23(5):1326-1332,7.基金项目
公益性行业(农业)专项经费项目(200903003)和农业部公益性科研院所专项资金项目(1610172011016)资助. （农业）
