| 干旱区土壤小麦根系界面Cd行为的环境影响研究——以甘肃省白银市区耕作灰钙土为例 |
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| 引用本文： | 南忠仁,李吉均,张建明.干旱区土壤小麦根系界面Cd行为的环境影响研究——以甘肃省白银市区耕作灰钙土为例[J].生态环境,2001,10(1):14-16. |
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| 作者姓名： | 南忠仁 李吉均 张建明 |
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| 作者单位： | 兰州大学地理科学系, |
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| 基金项目： | 国家自然科学基金重点项目（49731010） |
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| 摘 要： | 通过大田环境-土壤-作物系统Cd行为的环境影响研究，初步发现，共存元素Cd、Cu、Ni、Pb、Zn对Cd元素在土壤-作物根系界面行为的影响表现为正效应，其影响顺序为Cd>Pb>Cu>Zn>Ni；pH值、粘粒、粗粉粒含量与根系Cd含量呈负相关；磷和砂粒含量与根系Cd含量呈正相关；细粉粒、粗粘粒、有机质和CEC
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| 关 键 词： | 干旱区 土壤根系界面 Cd行为 土壤环境影响 |
| 文章编号： | 1008-181X（2001）01-0014-03 |
| 修稿时间： | 2000年7月10日 |
Influence of soil
properties on the behavior of cadmium in soil-root system in arid zone: Take Baiyin region
as example |
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| NAN Zhong-ren,LI Ji-jun,ZHANG Jian-ming.Influence of soil
properties on the behavior of cadmium in soil-root system in arid zone: Take Baiyin region
as example[J].Ecology and Environmnet,2001,10(1):14-16. |
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| Authors: | NAN Zhong-ren LI Ji-jun ZHANG Jian-ming |
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| Abstract: | Through the investigation of the influence of soil properties on the behavior of cadmium (Cd) in soil-root system under the real field conditions, the results showed that, (1) Co-exist elements (Cd, Cu, Ni, Pb, Zn) acted the positive effects on the element Cd transportation in soil-root system, and the sequence for their influence was Cd>Pb>Cu>Zn>Ni. (2) The pH value and the contents of clay and silt had the negative effects, and the contents of P2O5 and sand had the positive effects on the Cd movement in soil-root system. (3) The transfer levels of unessential element Cd from soil to crop-root mainly depended on its amount in soil. |
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| Keywords: | arid zone interface between soil and root Cd behavior influence of soil properties |
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