用 １０、３０、５０、１００ ｍ ｇ ／ Ｌ Ｓ３ ３ ０ ７ 浸冬小麦种子 １２ ｈ 。结果表明， Ｓ３ ３０ ７ 降低了麦苗的生长速度，对株高有控制作用；麦苗叶片叶绿素含量增加，叶片内可溶性糖和可溶性蛋白含量提高；叶片在低温逆境条件下电解质外渗率下降，从而提高了膜的稳定性，保证了细胞正常的生理功能。其效果以 ３０ ｍ ｇ ／ Ｌ 为最佳。 Winter wheat seeds were soaked in 10, 30, 50 and 100 mg / L S3307 for 12 h. The results showed that S3 30 7 reduced the growth rate of wheat seedlings and had a control effect on the plant height. The content of chlorophyll increased and the content of soluble sugar and soluble protein increased in the leaves, and the electrolyte leakage rate decreased under low temperature stress conditions, thus increasing The membrane stability, to ensure the normal physiological function of cells. The effect of 30 m g / L is the best.