镉污染农田土壤修复技术研究进展

发布时间：2018-10-11 17:51

【摘要】：镉是农田土壤污染最为广泛和农产品超标最为突出的重金属元素,对镉污染农田土壤的修复一直是重金属污染治理的重点和难点。近年来,国内外就镉污染农田土壤的修复技术进行了大量的研究和广泛的探索,尝试了各类钝化剂及农业措施等在减控农产品镉积累的效果,提出了诸如推行低吸收作物品种、工程措施、化学修复、生物修复和农艺调控等技术。该文分析了镉污染农田土壤修复中各类技术的应用效果、作用机理及其限制因素,认为分类治理和推行联合修复技术是今后我国镉污染农田土壤修复技术发展的方向。
[Abstract]:Cadmium is the most widely polluted heavy metal element in farmland soil and the most prominent heavy metal element in agricultural products. Remediation of cadmium contaminated farmland soil has always been the key and difficulty of heavy metal pollution control. In recent years, a great deal of research and extensive exploration have been carried out on the remediation technology of cadmium contaminated farmland soil, and the effects of various passivating agents and agricultural measures on reducing and controlling the accumulation of cadmium in agricultural products have been tried, such as the introduction of low absorption crop varieties. Engineering measures, chemical remediation, bioremediation and agronomic regulation and other techniques. This paper analyzes the application effect, action mechanism and limiting factors of various technologies in the remediation of cadmium contaminated farmland soil. It is considered that classified management and implementation of combined remediation technology are the direction of future development of soil remediation technology for cadmium contaminated farmland in China.
【作者单位】：桐庐县农业和林业技术推广中心;杭州市植保土肥总站;浙江大学环境与资源学院;
【基金】：浙江省农业厅《桐庐县农业“两区”土壤污染治理试点试验》项目
【分类号】：X53

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