[Objective] To study the effects of Pb2+ stress on the germination of seeds and seedlings growth of Phaseolus angularis. [Method] With Phaseolus angularis as the study materials, the effects of different Pb2 + concentrations on the germination of seeds and growth of seedlings were studied. [Result] When Pb2 + concentration was lower than 200 mg/L, it could promote the germination rate, germination vigor, germination index and vigor index of seeds. However, high lead concentration had obvious inhibitory effects on the germination of seeds. With the increase of Pb2+ concentration, the root length, seedling length, root weight and the content of plant chlorophyll were decreased. There was stronger inhibition on the growth of root than that of bud under high Pb2+ concentration, [ Conclusion] Low Pb2+ concentration could promote seed germination, but the growth of seedlings was inhibited by Pb2 +.%[目的]研究金属铅对赤豆种子萌发、幼苗生长的影响.[方法]以赤豆为材料,研究不同浓度的铅对赤豆种子萌发及其幼苗生长的影响.[结果]当Pb2+浓度低于200 mg/L时,pb2+在一定程度上促进赤豆种子的发芽率、发芽势、活力指数和发芽指数,而高浓度的pb2+对赤豆萌发有抑制作用；随着pb2+浓度的增加,赤豆种子的根长、苗长、根重和叶绿素含量都降低；高浓度pb2+对赤豆根生长的抑制作用大于芽.[结论]低浓度铅可促进赤豆种子的萌发,同时铅对赤豆幼苗的生长表现出抑制作用.
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