【摘要】 通过分析油菜超高产条件下植株一次分枝数和二次分枝数的多少对各部位角果质量的影响 ,得出如下结果 :1各枝序的角果数一般都随一次、二次分枝数的增加而增加 ;而每角粒数和千粒重随一次、二次分枝数的增加呈先增后减的趋势。 2主序和一次分枝的角果质量随分枝数的增减而变化的幅度较小 ;二次分枝的角果质量随分枝数的增减而变化的幅度较大。 3油菜超高产条件下 ,单株最适宜利用的一次和二次分枝数分别为 1 1～ 1 2个和 1 0～ 1 5个 ,过多过少都不利于群体角果质量的提高更多还原

【Abstract】 The trials were carried out under the condition of super high\|yielding cultivation to analyse the effects of primary and secondary branch quantity per plant on pod qualities of rachis and branches in oilseed rape. The results were as follows: ① The pod quantity of rachis, primary and secondary branches increased as the increasing of primary and secondary branch quantity. But the seed quantity per pod and 1000\|seed weight increased first and then decreased as the increasing of primary and secondary branch quantity. ② The variations of pod qualities of rachis and primary branches under different branch quantity were less than that of secondary branch. ③ Under the condition of super high\|yielding cultivation, the reasonable quantities of primary and secondary branches were 11～12 and 10～15 per plant respectively.更多还原