冶炼厂污灌区土壤-水稻系统重金属积累特征的研究
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安徽省自然科学基金(03043501)、安徽省教育厅自然科学基金重点项目(2000jl094zd)、重要生物资源保护与利用研究安徽省重点实验专项基金共同资助。


CHARACTERISTICS OF HEAVY MELTS ACCUMULATION IN SOIL-RICE SYSTEM IN THE SEWAGE IRRIGATED AREA NEAR A SMELTERY
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    摘要:

    冶炼厂对周围的农田土壤造成了污染,其中Cu的污染最严重,100 m处的全量和提取态Cu分别是182.45 mg/kg和81.91 mg/kg,是对照的10.3倍和35倍。污灌区水稻各器官重金属Cu、Zn的分布规律:Cu为根>茎叶>籽粒;Zn为茎叶>根>籽粒,Zn在水稻体内的移动能力大于Cu,Cu主要累积在水稻的根部;水稻茎叶中Cu的浓度和土壤中Cu的浓度密切相关。

    Abstract:

    Soil samples gathered from farmlands in the neighborhood of a smeltery were analyzed for pH, EC and contents of elements of different forms, such as N, P, K, Cu, Zn, Pb and Ni. The results showed that the soil was polluted by heavy melts. The total and extractable Cu in the soil within the radius of 100m were 182.45 mg/kg and 81.91 mg/kg, respectively, which were 9.3 times and 34 times as high as than that in the control. The distribution of heavy metals in rice in the sewage irrigated area varied from metal to metal and from part to part. Cu concentration was in the order of root > leaf-stem > rice and Zn concentration, leaf-stem > root > rice. Zn was more mobile than Cu, which was likely to accumulate in the root of rice. The concentration of Cu in the stem and leaf of rice was significantly related to Cu content in the soil of the sewage irrigated area.

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王广林,刘登义.冶炼厂污灌区土壤-水稻系统重金属积累特征的研究[J].土壤,2005,37(3):299-303. WANG Guang-lin, LIU Deng-yi. CHARACTERISTICS OF HEAVY MELTS ACCUMULATION IN SOIL-RICE SYSTEM IN THE SEWAGE IRRIGATED AREA NEAR A SMELTERY[J]. Soils,2005,37(3):299-303

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  • 在线发布日期: 2017-05-18
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