【摘要】 为了解Pb2+污染对牧草生长的危害,实验室光照培养箱培养测定了Pb2+处理对多花黑麦草Loliummultiflorum种子萌发和幼苗生长的影响。试验结果表明,Pb2+处理浓度≤800 mg/L时,多花黑麦草种子的萌发和幼苗生长受到促进,出现增效效应;>800 mg/L后,种子萌发及幼苗生长受到显著抑制。高浓度Pb2+处理对根生长的抑制大于对芽生长的抑制。更多还原

【Abstract】 In order to investigate the growth injury of grass by Pb²⁺ pollution,seed germination and seedling growth of Italian ryegrass（Lolium multiflorum） treated by different Pb²⁺ concentration were determined in incubator culture.The results showed that seed germination and seedling growth were promoted obviously when Pb²⁺ concentration below 800 mg/L,and inhibited significantly when Pb²⁺ concentration above 800 mg/L.Growth inhibition by high Pb²⁺ concentration treatments to root was greater than that to bud.更多还原