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弱春性小麦品种的千粒重和不孕小穗率呈极显著的负相关.抽穗至成熟期间的适温范围是21～26℃.千粒重与抽穗至成熟天数呈极显著的正相关.在抽穗至成熟期间,千粒重与平均日均温呈负相关,与平均日最高温度呈极显著的负相关,而与平均昼夜温差呈极显著的正相关.
There was a significant negative correlation between 1000-grain weight and infertility spikelet rate in weak spring wheat varieties.The suitable temperature range from heading to maturity was 21 ~ 26 ℃ .The thousand-grain weight had a very significant positive correlation with the number of days from heading to maturity, During the maturity period, 1000-grain weight was negatively correlated with average daily average temperature, significantly negatively correlated with mean daily maximum temperature, and extremely significant positive correlation with mean day-night temperature difference.