摘要
本文以仪征市现有耕地土壤为调查对象,通过布点、采样、检测、统计,结果表明,仪征市沿江圩区长江冲积母质发育的土壤比丘陵地区下蜀黄土重金属含量相对较高,土壤重金属含量多年来有升高现象,少数田块存在高残农药的残留,点源污染和农药污染对耕地环境质量的影响不容忽视,需要采取工程、生物和化学等技术对土壤进行修复。
The present cultivated soils in Yizheng city were analyzed by means of choosing the sampling position, sampling, analysis and stat. The result showed that the soil of development from alluvium in embankments along Yangtse River contained higher heavy metal content than Xiashu loess in hilly area. And the content of heavy metal in Yizheng had been increasing for years. The investigation also indicated that a few pieces of farmland were polluted by high-residue pesticides. The effect of point source pollution and pesticide pollution on environmental quality of cultivated area could not be ignored and they needed restoration by technologies of engineering, biology and chemistry.
出处
《四川环境》
2009年第4期136-140,共5页
Sichuan Environment
关键词
耕地
重金属污染
调查
Farmland
heavy metal pollution
investigation
