| 培养基质对印度芥菜Cd、Pb、Zn富集效果的研究 |
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| 引用本文： | 贾莹,李博文,杨卓,芦小军.培养基质对印度芥菜Cd、Pb、Zn富集效果的研究[J].水土保持学报,2010,24(1). |
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| 作者姓名： | 贾莹 李博文 杨卓 芦小军 |
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| 作者单位： | 1. 河北农业大学资源与环境科学学院,河北保定,071001
2. 中国环境管理干部学院,河北秦皇岛,066004 |
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| 基金项目： | 河北省自然科学基金项目(编号:C2007000459) |
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| 摘 要： | 通过温室土培和砂培盆栽对比试验,研究了外源Cd、Pb、Zn复合污染对印度芥菜富集重金属的效果。结果表明,印度芥菜Cd、Pb和Zn的富集量分别与土培和砂培Cd、Pb、Zn的添加量呈极显著正相关。砂培印度芥菜Cd、Pb和Zn的富集量分别远大于土培,前者印度芥菜地上部Cd、Pb、Zn的最高富集量分别达311.3,248.0,2760mg/kg,分别为土培的10.4,12.9,4.67倍;砂培条件下印度芥菜地上部Cd、Pb、Zn的提取量均大于土培,分别为土培的1.29～8.96倍、1.02～8.58倍和1.68～5.62倍;印度芥菜Cd、Pb、Zn的富集系数砂培较土培明显增大,其中富集系数的变化为CdZnPb,对Pb的富集系数除个别处理外均小于1,说明印度芥菜对Cd、Zn具有很强的富集能力,对Pb的富集能力较弱。研究表明,土培条件下Cd、Pb、Zn的生物有效性较低,直接制约着印度芥菜对土壤重金属污染的修复效果。
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| 关 键 词： | 印度芥菜 镉 铅 锌 植物修复 生物有效性 |
Effect of Growth Medium on Cd,Pb,Zn Accumulation by Brassica juncea |
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| JIA Ying,LI Bo-wen,YANG Zhuo,LU Xiao-jun.Effect of Growth Medium on Cd,Pb,Zn Accumulation by Brassica juncea[J].Journal of Soil and Water Conservation,2010,24(1). |
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| Authors: | JIA Ying LI Bo-wen YANG Zhuo LU Xiao-jun |
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| Institution: | JIA Ying1,LI Bo-wen1,YANG Zhuo2,LU Xiao-jun1 (1.College of Resources & Environmental Sciences,Agricultural University of Hebei,Baoding,Hebei 071001,2.Environment Management College of China,Qinhuangdao,Hebei 066004) |
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| Abstract: | Soil and sand pot experiment was carried out to study the effect of two types of growth medium-soil and sand on accumulation of Cd,Pb and Zn in Brassica juncea under the conditions of the exogeous Cd,Pb and Zn combined pollution. The results showed that the accumulations of Cd,Pb,Zn in Brassica juncea were all significantly correlated with their concentrations in the soil or sand,respectively. The concentrations of Cd,Pb,Zn accumulated in Brassica juncea growing in the sand were markedly higher than those i... |
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| Keywords: | Brassica juncea cadmium lead zinc phytoremediation bioavailability |
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