不同施肥措施对休宁土壤Cd形态的影响与蔬菜富集特性的研究  

Effect of the Different Fertilizations on Cd Fraction in Soil in Xiuning County and Research on Its Accumulation in Vegetable

作　　者：孙满意[1,2] 郭熙盛[2] 王文军[3] 

机构地区：[1]安徽大学生命科学学院,安徽合肥230039 [2]安徽养分循环与资源环境省级实验室,安徽合肥230031 [3]安徽省农业科学院土壤肥料研究所,安徽合肥230031

出　　处：《安徽农业科学》2009年第21期10093-10094,10111,共3页Journal of Anhui Agricultural Sciences

基　　金：国家科技支撑项目(2007BAD87B06)资助

摘　　要：[目的]研究不同施肥措施对休宁土壤Cd形态的影响与蔬菜富集特性。[方法]通过盆栽试验,研究了鸡粪、改良剂和外源Cd对休宁菜园土中重金属Cd形态的影响与蔬菜富集特性。[结果]结果表明,施入鸡粪可降低土壤中可交换态Cd和铁锰氧化态Cd的含量,增加了土壤中的碳酸盐态Cd和有机物结合态Cd含量。改良剂可提高土壤中可交换态Cd和碳酸盐态Cd的含量。外源Cd进入到土壤中主要以可交换态、碳酸盐态和铁锰氧化物结合态存在。萝卜、白菜和辣椒的可食用部分对土壤Cd的富集能力为:白菜>萝卜≈辣椒,转移系数为白菜>萝卜>辣椒。[结论]在农业生产上,可在土壤中添加有机肥和无机改良剂减少蔬菜对重金属Cd的吸收积累。在重金属Cd含量高的土壤中应避免种植富集能力极强的蔬菜品种。[ Objective ] The effect of the different fertilization measure on the Cd fraction in soil in Xiuning County and its accumulation in vegetable were studied. [ Method] The potted experiment in the effect of the chicken manure, additives and Cd addtion on the Cd fraction in soil and its accumulation in vegetable was carried out. [ Results ] The results showed that the application of chicken manure could decrease the content of exchangeable Cd and Fe-Mn oxide Cd ; and increase the content of the carbonate Cd and organic Cd. The content of soil exchangeable Cd and Carbonate Cd could be increased under the condition of additives application. The Cd addition in soil could be mainly transformed into the exchangeable, carbonate and iron-manganese oxide. The order of Cd accumulation in the edible part of different vegetable species was cabbage 〉 radish and pepper, and the transferring coefficient was cabbage 〉 radish 〉 pepper. [ Conclusion] The application of organic manure and inorganic soil additives could decrease Cd accumulation by vegelables in fanning practices. The vegetables with high enrich ment capacity of Cd should be avoided in soil with high content of Cd.

关 键 词：施肥措施 土壤Cd形态 蔬菜 富集特性 

分 类 号：S154.4[农业科学—土壤学]