稻米品质在穗上不同粒位间分布(1)一般早开花的籽粒粒重高，迟开花的籽粒粒重低。
The distribution of the quality of the grains at different positions within a rice panicle (1) the spikelets that flowered earlier produced greater grain weight than those flowered later.
穗粒数受环境影响很大，结实率和千粒重一般比较稳定。
Compared to ripened grain and 1000-grain weight, the spikelet number per panicle of film mulched rice was easily affected by environmental condition.
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