关键词: Cd, 草坪草, 富集, 结缕草, Cd污染

Abstract: We take the Cd polluted farmland soil as a special resource in order to implement agro-ecological regulation and safe high efficient utilization of farmland polluted by cadmium. It is a new way to construct a propagation base of evanescence grassland on farmland polluted by cadmium. The result of Cd accumulated content in different lawn grass shows that the Zoysia japonica is a kind of grass which has weak capability of absorption and accumulation for Cd of polluted farmland, taking plant in different places, and it doesn't make secondary pollution, and it changed the consistency of Cd in soil. It got rid of Cd pollution in food chain by selecting a grassland production model, and discovers a new approach to bioremediation and exploitation utilization on heavy metal polluted farmland.

Key words: Cd, lawn grass, accumulation, Zoysia japonica, Cd pollution