植物修复重金属污染土壤研究进展

土壤重金属污染已是全球性环境问题。因此，修复重金属污染土壤对于降低重金属毒害风险、维护环境健康和恢复生态意义重大。与其他土壤重金属污染修复技术相比，植物修复因其绿色环保、成本低廉，操作简单等优点受到广泛关注。本文概述了植物修复技术的主要作用方式，讨论了微生物法、化学法和物理法协同植物修复的作用机制和研究现状，并对重金属污染土壤的植物修复及联合修复法未来的研究方向进行了展望，以期为这一绿色技术的广泛应用提供参考。

Research Progress on Phytoremediation of Heavy Metal Contaminated Soils

Soil heavy metal pollution has been a global environmental problem. Therefore, remediation of heavy metal contaminated soil is of great significance to reduce the risk of heavy metal poisoning, maintain environmental health and restore ecology. Compared with other soil heavy metal pollution remediation technologies, phytoremediation has attracted wide attention due to its advantages of environmental friendliness, low cost and simple operation. This paper summarizes the main role of phytoremediation technology, and the mechanism and research status of synergistic phytoremediation by microbiological, chemical and physical methods are discussed. In addition, the future research directions of phytoremediation and combined remediation of heavy metal contaminated soil are prospected in order to provide reference for the wide application of this green technology.