被关闭污染源企业周边地区农业环境与农产品质量评价

Agricultural Environment and Quality of Agri-products around the Polluted Enterprise Closed

以湖南省长沙市郊黄兴镇某废弃硫酸锰厂周边地区为例 ,运用污染指数法对其农业环境与农产品质量进行评价。结果表明 :从单一因素考虑 ,各污染元素对土壤、水环境质量和蔬菜、水稻生产威胁的大小是Mn >Cd >Zn >S >Pb、Mn >S >Cd >Zn >Pb和Cd >Pb >Mn >Zn >S、Zn >Mn >Pb >Cd >S ;综合评价该地区农业环境与主要农产品质量 ,土壤和蔬菜已受到严重污染 ,灌溉水源受轻度污染 ,稻米品质超出了警戒水平。根据评价结果和当地实际情况 ,建议将该地区已被污染的耕地改造为花木等非食用性经济植物的生产用地。

In this paper, the comprehensive pollution index method of the agricultural environment and the quality of agricultural products,which were from the abandoned manganese sulfate factory region in Huangxing town in Changsha,were evaluated.The single factor was taken into account,and the order of the threat of polluting elements to soil was as follows:Mn>Cd>Zn>S>Pb; to water:Mn>S>Cd>Zn>Pb; to vegetable:Cd>Pb>Mn>Zn>S; and to rice:Zn>Mn>Pb>Cd>S. The evaluating results demonstrated that soil and vegetable were seriously polluted; irrigation water was slightly polluted and rice quality went beyond warning line. Based on the evaluating results and local situation,we suggested that economic crops but for food such as flower and tree be suitable to be planted there.