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通过田间试验研究了播种期和种植密度对冬油菜籽粒产量和含油率的影响.结果表明:播种期主要影响分枝花序籽粒产量,而种植密度不仅影响分枝花序籽粒产量,还对主花序籽粒产量产生一定影响;籽粒含油率不受播种期的影响.主花序籽粒产量占单株籽粒产量的比例随种植密度的增加而升高,主花序籽粒含油率比分枝花序高约1%,因此小区籽粒含油率随种植密度的增加显著升高.研究区冬油菜播种期不能晚于10月中旬,10月下旬播种会显著降低籽粒产量;种植密度在每平方米36～48株可以提高冬油菜籽粒产量和含油率.
The effects of sowing date and planting density on the yield and oil content of winter rapeseed were studied by field experiments.The results showed that: sowing period mainly affected the yield of branch inflorescence grain, but the planting density not only affected the yield of the seedling, but also the main inflorescence grain The yield of grain of the main inflorescence was not influenced by the sowing time.The grain yield of the main inflorescence increased with the increase of the planting density and the oil content of the main inflorescence was about 1% higher than the branching inflorescence, The seed oil content increased significantly with the increase of planting densities.The sowing date of winter rape could not be later than mid-October in the study area, and the sowing date in late October could significantly reduce the grain yield. The planting density of 36-48 per m ^ 2 could increase the winter rapeseed grain Yield and oil content.