摘要
随着农业生产的快速发展,化肥和农药的大量施用,农田土壤重金属污染状况日趋严重,文章以河套灌区中游部分耕地为调查区,调查研究结果显示:调查区域内镉的平均含量超过当地土壤背景值,铬、汞、铅的最大含量高于背景值,说明这些元素在一些点位上存在富集效应。土壤重金属污染生态风险由强至弱依次为镉>铬>铅>汞>砷,其中,镉的污染属重度污染。
With the rapid development of agricultural production and the extensive application of chemical fertilizer and pesticide,the heavy metal pollution of farmland soil is becoming more and more serious.The results show that the average content of Cd in the investigated area is higher than the background value of the local soil,and the maximum content of Cr,Hg and Pd is higher than the background value,indicating that these elements have enrichment effect at some points.The ecological risk of soil heavy metal pollution is from strong to weak in order of Cd>Cr>Pd>Hg>As,and Cd pollution is a serious pollution.
作者
韩翠莲
田志强
霍轶珍
Han Cuilian;Tian Zhiqiang;Huo Yizhen(Department of Civil Engineering,Hetao College,Bayan Nur 015000,Inner Mongolia,China;Technology Research Centerfor Irrigation and Drainage Engineering in Hetao Irrigation District,Bayan Nur 015000,Inner Mongolia,China)
出处
《农业技术与装备》
2020年第1期74-75,78,共3页
Agricultural Technology & Equipment
基金
内蒙古自治区高等学校科学研究项目（NJZY16335）
河套学院科学技术研究项目（HYZY201937）
内蒙古自治区河套灌区灌溉排水工程技术研究中心项目（K201754）
内蒙古自治区高等学校创新团队发展计划（NMGIRT-B1611）
关键词
河套灌区
农田土壤
重金属
生态风险
Hetao irrigation area
farmland soil
heavy metal
ecological risk
