The rate of average grain filling, the rate of grain filling during gradual increase stage, and the grain filling rate of rapid increase stage had important contribution on increasing grain weight.
因此选择适宜播期、提高渐增期灌浆速率、快增期灌浆速率和平均灌浆速率对提高粒重有重要意义；
These results show that the main causes of poor grain filling are later filling initiation and lower filling rate of inferior grains.
由此说明，部分亚杂组合籽粒充实不良的主要原因是弱势粒灌浆启动期滞后与灌浆速率小。
The effects of high temperature on grain filling rate and some physiological indexes in flag leaves in hybrid rice Teyou 559 were studied.
以杂交籼稻特优559为材料，探讨了高温胁迫对水稻灌浆期剑叶中有关生理特性和籽粒灌浆速率的影响。
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