某有色冶炼厂周围农业土壤中镉污染因素探讨

An approach to Cd contamination factors of soils around amet～allurgical plant.

运用动力学原理和投入产出法则研究了浙江省某铅锌冶炼厂周围农业土壤中镉的污染因素。得出猪栏肥等有机肥是污染土壤的关键因子。提出了不搞稻草还田，而是采用养殖蚯蚓和种植蕨类植物的方法，以达到控制镉污染和净化土壤的目的。

Based on kinetic principle and the Iaw of inputand output, we have studied the contarnination factors of agri-cultural Iands around a Iead and zinc metallurgical plant. Theresults showed that the main factor of Cd contaminated soilwas the organic materials such as pig gery manure. It wassuggested that earthworm be bred and the pteridophyte beplanted instead of recycling the rice straw back to the farm-Iand to reduce and control the Cd contamination.