成都平原农用土壤重金属污染现状及防治对策

随着工业化进程的加快和农业生产中化肥和农药不合理施用使得农用土壤重金属污染风险逐渐增大。本文对成都平原农用土壤和农作物重金属污染现状进行了综述，发现农用土壤和蔬菜中重金属污染均以Pb、Cd和Hg三种元素为主。分析了重金属离子在土壤一植物系统中迁移的一般规律及其影响因子，分析了农用土壤重金属污染的主要原因，为预防和防治污染提供了一些建议。

Status Quo of Heavy Metal Pollution of Agricultural Soil in Chengdu Plain and the Control Countermeaures

With the rapid industrialization and the improper use of the large amount of chemical fertilizers and pesticides, the risk of heavy metal pollution in agricultural soil was crescent. The paper summarized the current status of heavy mental pollution of agricultural soil in Chengdu Plain of Siehuan Province. It was found that the agricultural soils and the vegetables mainly were polluted by Pb, Cd and Hg. The general nile and affecting factors of heavy metal ions migration in the soil - plant system as well as the main causes of the polluttion were analyzed, based on which, suggestions for preventing and controlling the heavy metal pollution was proposed.