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155个中国水稻品种的基础营养生长期属中等的、即40—70天的占60%。中稻比早、晚稻长,籼比粳长。155个中国水稻品种的感温性属8级的、即温度升高1℃,促进生育3.51—5.00天的占一半以上。感温性与熟期类型和纬度之间有正相关关系,形成早弱晚强,北弱南强的变化趋势,发现了一群感温性弱的晚稻品种。
The basal vegetative growth stages of 155 Chinese rice cultivars were moderate, which accounted for 60% of 40-70 days. Medium rice than early, late rice long, indica than japonica long. The temperature sensitivities of 155 Chinese rice varieties are Grade 8, that is, the temperature is increased by 1 ℃ and the proportion of 3.51-5.00 days of fertility promotion is more than half. There was a positive correlation between temperature sensitivity and maturity type and latitude, which formed a trend of early weaker late and stronger north and stronger southern weaker than others, and found a group of late rice varieties with weak temperature sensitivity.