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“Co-culture Engineering”for Enhanced Phytoremediation of Metal Contaminated Soils

NI Cai-Ying, SHI Ji-Yan, LUO Yong-Ming and CHEN Ying-XuDepartment of Environmental Engineering, School of Environment and Resource Sciences, Zhejiang University, Hangzhou 310029 (China).Soil and Environment Bioremediation Hesearch Centre, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008 (China) Institute of Geography and Environment, Jiangxi Normal University, Nanchang 330027 (China)

摘要:<正> A co-culture of two plant materials, Astragalus sinicus L., a leguminous plant with concomitant nodules, and Elsholtzia splendens Naki-a Cu accumulator, along with treatments of a chelating agent (EDTA), root excretions (citric acid), and a control with E. splendens only were used to compare the mobility of heavy metals in chelating agents with a co-culture and to determine the potential for co-culture phytoremediation in heavy metal contaminated soils. The root uptake for Cu, Zn, and Pb in all treatments was significantly greater (P < 0.05) than that of the control treatment. However with translocation in the shoots, only Cu, Zn, and Pb in plants grown with the EDTA treatment and Zn in plants co-cropped with the A. sinicus treatment increased significantly (P < 0.05). In addition, when a co-culture in soils with heavy and moderate contamination was compared, for roots in moderately contaminated soils only Zn concentration was significantly less (P < 0.05) than that of heavily contaminated soils, howeve
  • 专辑:

    农业科技; 工程科技Ⅰ辑

  • 专题:

    环境科学与资源利用

  • 分类号:

    X53

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