| 干旱区土壤小麦根系界面Pb、Ni行为的环境影响——以甘肃省白银市区污灌耕作土为例 |
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| 引用本文： | 南忠仁,李吉均,张建明,程国栋.干旱区土壤小麦根系界面Pb、Ni行为的环境影响——以甘肃省白银市区污灌耕作土为例[J].中国沙漠,2001,21(1):34-38. |
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| 作者姓名： | 南忠仁 李吉均 张建明 程国栋 |
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| 作者单位： | 1. 中国科学院寒区旱区环境与工程研究所冻土工程国家重点实验室, 甘肃兰州 730000;2. 兰州大学地理科学系, 甘肃兰州 730000 |
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| 基金项目： | 国家自然科学基金重点项目 !( 497310 10 ) |
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| 摘 要： | 对大田环境土壤小麦根系体系Pb、Ni行为环境影响的调查研究表明:同种元素的影响程度最大,共存元素对Pb、Ni行为的影响多表现为协同效应;Pb、Ni由土壤向根系迁移的趋势较弱;pH值、粘粒及粗粉砂粒含量与根系Pb含量呈负相关,P和砂粒含量与根系Pb含量呈正相关,其它分析因子值与根系Pb含量不相关;粗粉砂粒组成与根系Ni含量呈负相关,砂粒组成与根系Ni含量呈正相关,其它分析因子值与根系Ni含量不相关。多元逐步回归分析表明:Pb是影响根系同种元素吸收的主要因子,而Ni不是。
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| 关 键 词： | 干旱区 土壤根系体系 Pb、Ni行为 土壤环境影响 |
| 收稿时间： | 2000-09-01 |
| 修稿时间： | 2000-10-11 |
Influence of Soil Properties on the Behavior of Pb and Ni in Soil-Root System Irrigated with Waste Water in Arid Zone -Taking the Baiyin Region as Example |
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| NAN Zhong-ren,LI Ji-jun,ZHANG Jian-ming,CHENG Guo-dong.Influence of Soil Properties on the Behavior of Pb and Ni in Soil-Root System Irrigated with Waste Water in Arid Zone -Taking the Baiyin Region as Example[J].Journal of Desert Research,2001,21(1):34-38. |
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| Authors: | NAN Zhong-ren LI Ji-jun ZHANG Jian-ming CHENG Guo-dong |
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| Institution: | 1. State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, CAS, Lanzhou 730000, China;2. Department of Geography, Lanzhou University, Lanzhou 730000, China |
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| Abstract: | Through the investigation of the influence of soil properties on the behavior of lead (Pb) and nickel (Ni) in soil\|root system under actual conditions, this paper has found that: the content of Pb or Ni in soil strongly affected its transfer from soil to spring wheat root. Most co\|exist elements acted the positive effects on the elements Pb and Ni transportation in soil\|root system; The slope of the soil\|root relationship of element Pb or Ni was lower. The pH value and the contents of clay and coarse silt had the negative effects, and the contents of P 2 O 5 and sand had the positive effects on the Pb movement. The coarse silt had the negative effect, and the content of sand had the positive effect, on the Ni movement; The transfer level of unessential element Pb from soil to crop\|root mainly depended on its amount in soil, but element Ni did not. |
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| Keywords: | arid zone soil and root system behavior of Pb and Ni influence of soil properties |
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