期刊论文

Phytoextraction of cadmium contaminated agricultural soil by tobacco and swiss chard rotation systems

中文

环境工程技术学报

1674-991X

2020

10

3

440-448

10.12153∕j.issn.1674-991X.20190167

国家重点研发计划重点专项项目(2016YFD0800807) 长沙市科技计划项目(kq1801025) 国家自然科学基金项目(41701366)。

本校为第一机构

植物修复重金属污染土壤具有环境友好、成本适中、可原位修复等优势。采集中、高重金属污染风险的农田土壤开展盆栽试验,探究烟草—红叶甜菜轮作模式对2种农田污染土壤中Pb、Zn、Cu、Cd的修复潜力。结果表明:烟草和红叶甜菜对2种农田污染土壤中Pb、Zn、Cu、Cd均有一定的富集能力,其中对Cd的富集能力最为显著;在高重金属污染风险土壤中,烟草成熟期下部叶的Cd浓度最高,达41.63 mg/kg,富集系数(BCF)和转运系数(TF)分别为17.06和17.42,红叶甜菜成熟期根部Cd浓度为7.55 mg/kg,BCF为3.85,高于地上部位;在中重金属污染风险土壤中,烟草成熟期下部叶的Cd浓度达34.59 mg/kg,BCF和TF分别为40.69和13.67,红叶...

Phytoremediation of heavy metal contaminated soil has the advantages of environmental friendliness,moderate cost and in situ restoration.The farmland soil with medium and high risk of heavy metal pollution were selected for pot experiments to explore the remediation potential of tobacco(Nicotiana tobaccum L.)and swiss chard(Beta vulgaris var.cicla L.)rotation model for the heavy metals Pb,Zn,Cu and Cd in the contaminated soil of two kinds of farmland.The results showed that,on the tested soils,tobacco and swiss chard had certain enrichment capacity for Pb,Zn,Cu and Cd,especially for Cd.In the ...