野生大豆重金属含量及富集特征  

Characteristics of Content and Accumulation of Heavy Metals in Glycine soja

作　　者：吴东丽[1] 张金屯[2] WU Dong-li;ZHANG Jin-tun(Meteorological Observation Centre,China Meteorological Administration,Beijing 100081;College of LifeScience,Beijing Normal University,Beijing 100875)

机构地区：[1]中国气象局气象探测中心,北京100081 [2]北京师范大学生命科学学院,北京100875

出　　处：《安徽农业科学》2018年第16期71-74,81,共5页Journal of Anhui Agricultural Sciences

基　　金：国家自然科学基金项目(30771248;30070140)

摘　　要：[目的]研究野生大豆不同部分对重金属的积累和转移能力。[方法]通过用重铬酸钾容量法、酸度计法、中和滴定法,测得有机质、pH和碳酸盐含量。[结果]野生大豆对Cu、Zn、Cd、Pb这4种重金属富集特征都呈现出地下部分明显大于地上部分,且野生大豆生长越旺盛,积累重金属的量越多。野生大豆各部分在不同群落对Cu和Cd的积累规律是一致的,表现为地下>种子>土壤>地上,对Pb的积累表现为地下>土壤>地上>种子。Cd的富集系数最高,因为Cd是水易溶性元素。[结论]该研究为野生大豆的重金属富集规律提供理论依据。[Objective] The research aimed to study accumulation and transfer ability of different parts for Glycine soja.[Method]The content of organic matter,pH and carbonate were measured by the method of potassium dichromate capacity,acidity meter and neutralization titration.[Result] Underground part of Glycine soja had a higher capability of accumulating Cu,Zn,Pb,Cd than aboveground did.The metals accumulation by Glycine soja was much higher when it was more flourish.Accumulation of Cu and Cd in different parts of Glycine soja indicated the same degree that was underground part〉seeds〉soils〉aboveground part,while the degree accumulation of Pb was that underground part 〉soils〉aboveground part〉seeds.BCF of Cd was the highest value because Cd was dissolvent.[Conclusion]The study provides the theoretical basis for the accumulation of heavy metal of Glycine soja.

关 键 词：野生大豆 重金属 富集 转移 

分 类 号：S181.3[农业科学—农业基础科学]