Relations Between Soil Properties and Selected Heavy Metal Concentrations in Spring Wheat (Triticum aestivum L.) Grown in Contaminated Soils
Relations Between Soil Properties and Selected Heavy Metal Concentrations in Spring Wheat (Triticum aestivum L.) Grown in Contaminated Soils
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DOI：
10.1023/a:1012962604095
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
Z. Nan;Chuanyan Zhao;Jijun Li;Fahu Chen;Wu Sun
中科院分区：
文献类型：
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作者：
Z. Nan;Chuanyan Zhao;Jijun Li;Fahu Chen;Wu Sun
在中国甘肃省白银市有色金属采矿和冶炼基地附近的土壤中种植春小麦。中国研究面积为501平方公里。一些农田主要通过废水或空气沉积受到重金属污染。测定了土壤pH值、有机质、有效磷（P）、镉（Cd）、铅（Pb）、铜（Cu）和锌（Zn）的含量。还分析了春小麦籽粒中的重金属。结果采用多元线性相关和逐步回归分析。土壤中重金属全量的增加可促进籽粒中Cd的积累，而土壤中Zn全量的增加可降低籽粒中Pb的积累。相关性显着增加，包括其他土壤性质的粮食镉和铅。逐步回归分析表明，土壤pH值和有效磷对籽粒Cd吸收的影响大于其它土壤重金属总量。用土壤Cd、Pb的全量可以较好地预测籽粒Cd、Pb的含量，但不能很好地预测籽粒Zn、Cu的吸收量。
Spring wheat was grown in soils near a non-ferrous metals mining and smelting base in Baiyin city, Gansu province, P.R. China. The area studied is 501 km2. Some of the croplandshad been contaminated by heavy metals mainly through wastewaterirrigation or aerial deposition. The soil samples were analyzedfor pH, organic matter and available phosphorous (P); also fortotal cadmium (Cd), lead (Pb), copper (Cu) and zinc (Zn) contents. Spring wheat grains were also analyzed for heavy metals. The results were interpreted using multiple linear correlation and stepwise regression analyses. The increment oftotal soil contents of selected heavy metals could enhance grain Cd accumulation, and the increment of total Zn content of soil could lower the grain Pb accumulation. The correlationswere markedly increased by including other soil properties forgrain Cd and Pb. Stepwise regression analyses indicated that the effect of soil pH and available P on the uptake of grain Cd were greater than that of the other total soil contents ofheavy metals. Grain Cd and Pb could be reliably predicted bythe total soil contents of Cd and Pb while the uptake of grainZn and Cu were not satisfactorily predicted.