污水灌溉重金属在农田土壤中的运移分布规律研究

通过试验,研究了污水灌溉重金属(Pb,Cd,Cr,Cu)在农田土壤中的运移分布规律,其中包括重金属在土壤水平方向上的分布特征、重金属在土壤垂直方向上的分布特征以及土壤重金属迁移率。研究成果对于合理开发利用污灌水资源,减轻土壤污染,改善土壤生态环境都具有一定的参考价值。

Distribution of Heavy Metal Pollution in Farmland Soil under Wastewater Irrigaiton

With the development of wastewater irrigation,it is very important to study influence of heavy metal pollution,especially influence of heavy metal pollution on soil-crop systems.Through wastewater irrigation experiment,firstly,distribution of heavy metal pollution along farmland soil was studied,which includes distribution feature of heavy metal pollution both along horizontal direction and vertical section.Then,soil heavy metal pollution movement and transferred rate were studied.It is proved that the present findings should have important reference value in reasonable wastewater irrigation,soil pollution alleviation and soil ecological environment improvement.