三江平原的深秋时节气候异常 ,降水频率高 ,留种一直是困扰水稻生产的疑难问题 ,为此 ,初步进行了水稻种子发芽率的限制因子研究 ,经过分析认为 ,影响水稻种子发芽率的因子是种子含水量。而种子的成熟度和脱粒前的降水量是影响种子含水量的主要因子。入库后 ,水分大的种子 ,发 In the autumn of the past year, the climate of Sanjiang Plain has anomalous climate and high frequency of precipitation. It has been a difficult problem that rice-growing has always been troubled by the loss of seed. Therefore, the limiting factor of rice seed germination rate has been preliminary studied. The factors that affect the germination rate of rice seed are Seed moisture content. The seed maturity and pre-threshing precipitation are the main factors affecting seed moisture content. After storage, large seeds, hair