花卉植物对重金属污染土壤修复能力的研究

Study on Remedial Capability of Heavy Metal-Contaminated Soil by Ornamental Plants

[目的]研究花卉植物对重金属污染土壤修复能力。[方法]在中山某小区内取8种花卉植物以及土壤,按照国家标准测定了花卉植物的根茎叶及土壤Cd、Cr、Cu、Zn、Pb的含量。[结果]花卉植物对重金属污染土壤修复能力大小顺序为Zn>Cd>Cu>Cr>Pb,花卉对重金属的积累能力大小顺序为Cr>Zn>Cu>Cd>Pb。[结论]土壤中存在一定的重金属污染。花卉植物对重金属污染土壤有一定的修复能力和转移能力。

[Objective] The research aimed to study the remedial capability of heavy metal-contaminated soil by ornamental plants. [Method] Eight sorts of ornamental plants and the soil were collected in a residential district of Zhongshan. The quantity contained of Cd , Cr, Cu,Zn, Pb in the roots,stems,leaves and the soil were determined by national standard. [ Result] The remedial capability of metal-contaminated soil was Zn 〉 Cd 〉 Cu 〉 Cr 〉 Pb, and the accumulation capability was Cr 〉 Zn 〉 Cu 〉 Cd 〉 Pb. [ Conclusion] The soil was polluted to some extent by the heavy metal, and the ornamental plants had remedial and transference capability of heavy metals.