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在覆膜直播的高密度水平下 ,对撒播、条播和点播 3种播种方式的制种效果进行比较 ,结果表明 ,在 4～1 2万苗 / 6 6 7m2 的范围内 ,撒播和条播的制种产量随密度的增加而增加 ,其中以撒播的产量最高。而点播方式的制种产量以 8万苗 / 6 6 7m2 的最高 ,1 2万苗 / 6 6 7m2 的产量反而下降。这说明采用撒播方式能有效地发挥覆膜直播密植的增产潜力 ,覆膜直播下的高密度撒播可作为今后两系油菜制种的主要方法
The results showed that in the range of 4 ~ 12 000 seedlings / 6 6 7m2, sowing and sowing were carried out under the condition of high density of direct seeding and direct seeding. Seed yield increased with increasing density, of which the highest yield was sowing. On the other hand, the yield of seed production decreased with the highest output of 80 000 seedlings / 667 m2 and the output of 12 000 seedlings / 667 m2. This shows that the use of sowing methods can effectively play a close planting of planting film yield potential, high-density sowing under direct seeding can be used as the main method of seed production of two lines in the future