在一定穗数的基础上,依靠分蘖穗夺高产,这是杂交水稻的一个重要栽培原则。同一单株分蘖发生的时间、占有的空间和所处的蘖位不同,其优劣存在很大差异,因此分蘖的利用上不仅有数量的问题,也还有质量的问题。本文根据试验结果,分析了杂交稻穗粒组成与产量的关系,探讨了栽培上建立 In a certain number of spikes, relying on tillering spike yield, which is an important principle of hybrid rice cultivation. The same plant tiller time, possession of the space and where the tiller, the advantages and disadvantages there is a big difference, so the utilization of tillers not only the number of problems, there are still quality problems. Based on the experimental results, this paper analyzed the relationship between the composition of grains and yield of hybrid rice, discussed the establishment of cultivation