随密度降低，分蘖成穗数和分蘖成穗率都提高。
With the reduce of density, the number and percentage of earbearing tillerincrease.
应用两个水稻茎数动态模型（TIL和RGR模型） ，分析了成穗率与群体干物质积累动态的关系。
The relationship between productive tiller percentage (PTP) and biomass accumulation was studied using a simulation approach. The TIL and RGR models were used in the analyses.
促使水稻新品种产量增长的关键因素是增加了杂交粳稻和理想株型品种的每穗成粒数。
The key factor to increase the yield was ripened grains per panicle of new hybrid rice and varieties with idea type.
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