抽穗后休内物质的转运及不同叶位叶对产量的效用,经过前人的许多实验及作者1957年在晚粳稻、深水稻上所得的试验结果,都再次地论证了水稻抽穗后的物质积累,主要是依靠抽穗后的光合作用。以千粒重指数为指标,通过遮光、剪叶处理,得出了产量与抽穗后绿叶数相关;止叶的工作主要是光合作用,积累效能后期大于前期;2、3、4叶主要是贮藏作用,效能前期大于后期的 After heading, the material transport and the effect of different leaf positions on yield were tested. After many experiments of the predecessors and the experimental results obtained by the author on late japonica rice and deep-paddy rice in 1957, the material accumulation after heading of rice was demonstrated again , Mainly rely on photosynthesis after heading. The 1000-grain weight index as an indicator, through the shading, cutting leaf treatment, the yield was related to the number of green leaves after heading; leaf arrest mainly photosynthesis, accumulation efficiency later than the early; 2,3,4 leaves mainly storage, Efficacy earlier than the late