百合对土壤重金属污染生物修复能力研究

Research on tBioremediation Ability of Lily(Lilium davidii) for Soil Heavy Metal Pollution

研究采用卷丹百合植物修复土壤中的重金属污染。在受污染土壤上进行了自然生长的卷丹百合种植实验,分析土壤以及百合的地上和地下部分的重金属含量。结果表明,卷丹百合对重金属的修复能力按照降解速度排列为Cd>As>Zn>Cu,其中Cd和As对其更为敏感,容易吸收和固定。相关性分析发现,Cu和Cd的含量与富集系数呈不显著正相关,而与转运系数呈不显著负相关。Zn含量与富集系数显著正相关,但与转运系数无显著相关性。土壤中的As含量与富集系数和转运系数之间没有相关性。卷丹百合种植对重金属污染土壤具有显著的生物修复能力,尤其是Cd和As的修复效果更佳。

A study was conducted on the remediation of heavy metal pollution in soil using lilies.An experiment was conducted on the natural growth of lilies in contaminated soil to analyze the heavy metal content in the soil and the aboveground and underground parts of lilies.The results showed that the remediation ability of Lilium lilies to heavy metals was ranked as Cd>As>Zn>Cu according to the degradation rate,with Cd and As being more sensitive to them and easy to absorb and fix.Correlation analysis found that the content of Cu and Cd was not significantly positively correlated with the enrichment coefficient,but was not significantly negatively correlated with the transport coefficient.Zn content is significantly positively correlated with enrichment coefficient,but not with transport coefficient.There is no correlation between As content in soil and enrichment and transport coefficients.The cultivation of Lilium has significant bioremediation ability for heavy metal contaminated soil,especially in the remediation of Cd and As.