长期肥料定位试验条件下土壤中重金属的含量变化
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国家自然科学基金项目(40271097)资助。


VARIATION OF SOIL HEAVY METAL CONTENTS IN A LONG-TERM FERTILIZATION EXPERIMENT
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    摘要:

    通过测定长期(1989、1995、1998、2001年)肥料试验土壤中重金属As、Hg、Cd、Pb的含量,结果表明:随耕作年限增长,试验区土壤中4种重金属的含量总体呈上升趋势,相对百分含量的增长大小为:Hg ﹥ Cd ﹥ Pb ﹥ As;到2001年为止试验区所测重金属含量均未超过国家环境质量一级标准;重金属Hg或Cd在不同施肥处理的土壤中含量存在差异;施肥(P肥)是重金属含量增加的主要原因;土壤中4种重金属含量间呈正相关性,表明它们的来源和环境行为有一定的相似性。

    Abstract:

    Contents of four heavy metal elements (As, Hg, Cd, Pb) in soil (year 1989, 1995, 1998, 2001) in a long-term fertilization experiment were investigated. The results showed that the contents of four heavy metal elements were increasing along with cultivation time as a whole and the increase varied in the order of Hg ﹥ Cd ﹥ Pb ﹥ As. All the four elements investigated, however, had not exceeded the first grade criteria of the national standard for environmental quality by 2001. Concentration of Hg or Cd differed between fertilization treatments. Fertilization was the main cause for increase of heavy metal elements in the soil, especially application of P fertilizer. Positive correlations between the four heavy metal elements contents in soil were found, which indicates similarity of the heavy metals in source and environmental behavior.

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陈芳,董元华,安琼,钦绳武.长期肥料定位试验条件下土壤中重金属的含量变化[J].土壤,2005,37(3):308-311. CHEN Fang, DONG Yuan-hua, AN Qiong, QIN Sheng-wu. VARIATION OF SOIL HEAVY METAL CONTENTS IN A LONG-TERM FERTILIZATION EXPERIMENT[J]. Soils,2005,37(3):308-311

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  • 在线发布日期: 2017-05-18
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