植物对土壤重金属污染修复的研究进展

Research progress in heavy metal soil pollution repairing by plants

对植物提取、植物钝化和植物挥发等植物修复技术类型及植物修复机理,包括植物本身分泌特殊物质来螯合溶解难溶性金属;通过某些微生物或微生物与植物的共生体促进植物对重金属的吸收;通过一些土壤改良措施如螯合剂、酸性肥料等的施用增加重金属的有效性,从而提高植物对重金属的提取效率等做了简要论述。分析了目前该研究领域存在的主要问题,以期为修复重金属污染土壤的研究和实践提供参考。

This paper discusses plant repairing types such as plant abstraction,plant purification, and plant volatilization ,plant repairing mechanism,including plant secretes to chelate the metals which are difficult to be dissolved, microbes and the symbotic microbe - plant to promote the absorbance of heavy meads, increasing effectveness on absorbing heavy metals by using chelates and acidic fertilizers in improving soil, and, finally, analyzes current main problems in this field in order to provide suggestions for repairing heavy metal polluted soils.