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大穗型、中间型和多穗型品种具有各自不同的穗、粒、重间的协调平衡关系。以高产为目标，最适穗容量平衡点呈多穗型＞中间型＞大穗型。营养生长基础对群体穗粒重的效应为多穗型＞大穗型＞中间型。穗粒数的增加是提高穗粒重的有效途径，增加小穗数／穗对高结实率品种有效，减少不孕小穗数／穗对环境敏感型品种效应显著。
Large panicle type, middle panicle type and multi-panicle type have their own different balance between spike, grain and weight. With high yield as the goal, the most suitable panicle capacity was multi-spike> middle> big spike. The effect of vegetative growth on population spike weight was multi-spike> large spike> intermediate. Increasing the number of spikelets is an effective way to increase the grain weight per spike. Increasing the number of spikelets / spike is effective for high seed rate varieties, and reducing the number of spikelets / spike significantly affects the environment sensitive varieties.