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一、试验目的当前杂交水稻繁制种生产上,为解决母本穗粒外露,一般亩需“九二○”8克以上。而且,为了减少授粉障碍母本还要割叶,这不仅大量增加了工本,还由于割叶锐减了叶面积,导致在高产条件下结实期光合产物不足,阻碍了繁制种产量的进一步提高,影响到整个杂交稻种子生产的经济效益。为了简化制种工
First, the purpose of the experiment Hybrid rice breeding current production, in order to solve the female ear grain exposed, the general mu need “920” 8 grams or more. Moreover, cutting mother leaves to reduce pollination barriers not only increased the cost of the work but also reduced leaf area due to cut leaves, resulting in insufficient growth of photosynthetic products during the high-yielding period, hindering further increases in yield , Affecting the economic benefits of the whole hybrid rice seed production. In order to simplify the seed production