黑龙江省逊克县大豆种子从大田收获到次年播种,贮藏时间长达180d,在贮藏期间,容易发生种子劣变。种子劣变后种子贮藏力下降、萌发及生长减缓、萌发整齐度下降、抗逆性能力下降、出苗率降低、不正常幼苗增加,种子失去发芽能力,严重影响农业生产安全。1严格控制种子入库水分种子中的水分按其特性可分为自由水和束缚水。自由水是生物化学的介质,存在于种子表面和细胞间隙内,具有一般水的特性,可作为溶剂。易受外界环境条件影响、容易蒸发;束缚水与种子内的亲水胶体物质中 Soybean seeds from Xunke County of Heilongjiang Province were harvested from the fields and sown for the following year with a storage time of up to 180 days. During the storage, soybean seeds were prone to deteriorate. After seed deterioration, the seed storage capacity decreased, the germination and growth slowed down, the germination uniformity decreased, the ability of stress resistance decreased, the rate of emergence decreased, abnormal seedlings increased, the seeds lost their ability to germinate and seriously affected the safety of agricultural production. 1 strict control of seeds into the water seeds in the water according to their characteristics can be divided into free water and irreducible water. Free water is a biochemical medium present in the seed surface and in the intercellular spaces, with the general characteristics of water, as a solvent. Vulnerable to external environmental conditions, easy to evaporate; irreducible water and seeds in the hydrophilic colloid substances