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多品种、多年、多播期结实期分段取样试验结果表明 :稻米非垩白米率的形成可以用Logistic方程模拟其随齐穗后天数增加的动态变化过程 ,并可以将其划分为 :初始阶段、快速增长阶段和基本稳定阶段 ;稻米非垩白米率的形成动态与粒重的积累有明显的相随性 ,随着粒重的增加稻米垩白米率呈增长的趋势 ,但粒重的增长速率加快则对稻米非垩白米率的形成不利 ;齐穗后 2 0d内这一时段是稻米非垩白米率形成及受温度影响的主要时段 ,这一时段高温对稻米非垩白米率的形成不利
Multi-species, multi-year, multi-year seedling stage sampling results show that: the formation of rice non-chalkiness rice rate can be used Logistic equation to simulate the dynamic changes with the number of days after heading, and can be divided into: the initial stage , The stage of rapid growth and the stage of basic stability. The formation dynamics of non-chalky rice rate of rice showed obvious relativity with the accumulation of grain weight. With the increase of grain weight, the rate of rice chalky rice showed an increasing trend, but the growth rate of grain weight Speeding up the formation of non-chalky rice was unfavorable to rice. During the period of 20 days after heading, this period was the main period for the formation of rice non-chalky rice rate and temperature, which caused unfavorable formation of non-chalky rice rate