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对6种种植密度下直播甘蓝型油菜产量进行了研究。结果表明:角果长、宽分别在开花后19天和25天左右达到最大值,角果大小有随密度增加而减少的趋势;单位角果皮面积承担的子粒数(SNPA)及单位角果皮面积的子粒重(PPA)都随密度
The yield of direct-seeded Brassica napus under six planting densities was studied. The results showed that the length and breadth of the fruit reached the maximum at 19 days and 25 days after flowering, respectively. The size of the fruit decreased with the increase of density. The number of seeds per unit area (SNPA) Of the seed weight (PPA) with the density