Abstract:

Heavy metal pollution in soil has been a hot research focus in the world. Phytoremediation has become the prominent due to its advantages of convenience, economy and no secondary pollution. This article focuses on phytoremediation, phytoremediation adding chemical regulation agents, and plant-microbial remediation on soil which was polluted by mercury, cadmium and chromium. The problems about phytoremediation were discussed, and the directions of future research were briefly stated.