不同改良剂对氮镉作用下土壤酶活性的影响  

Effects of Conditioner on Enzyme Activities in Soil with Different Levels of Nitrogen and Cadmium Contamination

作　　者：李素霞[1] 杨钢[1] 刘海胜[1] 石根科[1] 舒稳[1] 沈云[1] 

机构地区：[1]武汉生物工程学院化学与环境工程系,湖北武汉430415

出　　处：《安徽农业科学》2010年第32期18153-18154,共2页Journal of Anhui Agricultural Sciences

基　　金：武汉市教育局科研项目(2008K081)资助

摘　　要：[目的]探讨菜地Cd与硝酸盐复合污染下的改良措施。[方法]通过大田研究,采用不同的改良剂(石灰、有机肥和双氰胺)对氮镉交互作用下,不同蔬菜种植下土壤酶活性的影响进行分析。[结果]除酸性磷酸酶活性在不同作物土壤中的变化趋势不同外,其他土壤酶活性在不同作物土壤中的变化趋势基本一致。[结论]氮镉互作下,优先施用的改良剂顺序为有机肥、石灰和双氰胺。[Objective] To explore the improvement measures of cadmium and nitrate composite contamination in vegetable field.[Method] A field experiment was performed to study the effects of conditioner including lime,organic fertilizer and dicyandiamide on enzyme（sucrase,urease,protease and apase） activities with different levels of nitrogen and cadmium.[Result] The results showed that the trends of all soil enzyme activities in soils with different crops consistent agreed well except apase activity.[Conclusion] The order of soil conditioner for improving cadmium and nitrate composite contamination is as follows： organic fertilizer,lime and dicyandiamide.

关 键 词：土壤酶活性 改良剂 CD 

分 类 号：X171.5[环境科学与工程—环境科学] S154.2[农业科学—土壤学]