香薷植物修复铜污染土壤的研究进展

土壤铜污染有自然来源和人为来源。铜污染土壤中有机质、Fe／Al氧化物对铜的专性吸附，是影响土壤中铜生物有效性的主要因素。近年来，我国原生植物修复材料如海州香薷、鸭跖草、酸模、紫花香薷在国内铜污染土壤的研究中得到广泛应用。其中．采用海州香薷开展铜污染土壤植物修复机理和修复技术的研究，已从实验室水培、盆栽试验的生长反应特性、耐及解铜毒的生理生化反应，进展到室外大田修复的示范工程及技术推广阶段。紫花香薷在重金属复合污染土壤上，也有修复前景。开展植物修复材料的产后处置研究，综合利用和深加工，增大植物修复材料价值，对加强植物修复工程的示范和推广步伐，有重要意义。

Research Progress on Phytoremediation of Copper Contaminated Soil by Elsholtzia Plants

Soil contamination with copper consist mainly ot natural source and human activities source. The specific adsorption of copper to soil organic matter, Fe/Al oxide is the main factor affecting copper bioavailability in soil. Nowadays, the phytoremediation materials such as Elsholtzia splendens, Cornrnelina communis, Rumex acetosa Linn, and Elsholtzia argyi have been investigated widely in China for the phytoremediation of copper contaminated soil. Solution culture and pot experiment, field experiment have been done to investigate the physiological and biochemical response to copper toxicity, and the phytoremediation of copper from the contaminated soil by E. splendens. E. argyi also show the potential for the phytoremediation of heavy metal polluted soil. The disposal of remedial materials after removal of their heavy metals from contaminated soil for the fully utilization of phytoremediated plant materials is particularly important to implementate this innovative environmental biotechnology.