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优质高产油菜新品种中双9号不同栽培密度试验结果表明,以每公顷16.5万株产量最高,达2382.3kg,分别比每公顷21.0万株、12.0万株、27.0万株、7.5万株增4.65%、8.87%、9.37%、21.07%;不同栽培密度对产量构成因素影响最大的是单位面积总角果数,然后才是千粒重和角粒数;不同栽培密度影响了植株形态长相的变化,随着密度的增加,株高逐渐降低,分枝部位逐渐增高,一次分枝数减少,一次分枝角果数逐渐减少,但主花序角果数占总角果数比例显著提高。可见合理密植主要是增加了单位面积总角果数,从而达到了提高单位面积产量水平的目的。
The results showed that the highest yield of 165000 plants per hectare was 2382.3kg, which was higher than 210,000 plants per hectare, 120,000 plants, 270,000 plants and 75,000 plants respectively. %, 8.87%, 9.37%, 21.07%. The most influential factors on the yield components of different planting densities were the number of total fruit per unit area, and then the number of 1000-grain weight and the number of grains per plant. With the increase of density, the plant height gradually decreased, the branches increased gradually, the number of primary branches decreased and the number of branches increased gradually. However, the proportion of the main fruit in the main inflorescence increased significantly. It can be seen that reasonable and close planting mainly increases the total number of fruit per unit area, so as to achieve the purpose of raising the output level per unit area.