以陈年圣美101番茄种子为材料，探究了水杨酸、硫酸锌、硝酸钾、氯化钙及磷酸二氢钾等外源物质浸种催芽对番茄种子萌发的影响。结果显示，供试5种外源物质在一定浓度内均可以提高番茄种子发芽率，其中浓度为5 g/kg磷酸二氢钾效果最显著，其次是浓度为2 g/kg氯化钙，硫酸锌的效果相对较差。

The experiment used Shengmei 101 tomato seeds as research materials， the effects of exogenous substances such as salicylic acid， zinc sulfate， potassium nitrate， calcium chloride and potassium dihydrogen phosphate on seed germination of tomato were investigated. The results showed that the above five foreign substances can increase the germination rate of tomato seeds within a certain concentration， of which the concentration of 5 g/kg potassium dihydrogen phosphate has the most significant effect， followed by 2 g/kg calclum chloride， and zinc sulfate solution has a relatively poor effect.

S641.2