采用盆栽试验法,研究不同含量铜尾矿矿砂对紫花苜蓿(Medicago sativa L.)幼苗生理生化指标的影响。研究结果显示Cu胁迫下紫花苜蓿生长受到抑制,膜脂过氧化程度高,但其抗氧化系统一定程度清除了植物体内的自由基,提高植物对Cu耐性,紫花苜蓿可用于修复Cu污染环境。 Pot experiments were conducted to study the effects of different copper mine tailings on the physiological and biochemical indexes of alfalfa (Medicago sativa L.) seedlings. The results showed that under the stress of Cu stress, the growth of alfalfa was inhibited and the membrane lipid peroxidation was high. However, its antioxidant system cleared the free radicals in plants to a certain extent and improved the plant tolerance to Cu. Medicago sativa could be used to repair the environment polluted by Cu.