不同品种大白菜对镉的吸收积累差异  

Absorption and Accumulation Differences of Cadmium Among Brassica Pekinensis Varieties

作　　者：陈瑛[1,2] 李廷强[2] 杨肖娥[2] 

机构地区：[1]绍兴文理学院生命科学学院,浙江绍兴312000 [2]浙江大学环境与资源学院污染环境修复与生态健康教育部重点实验室,浙江杭州310029

出　　处：《绍兴文理学院学报》2010年第7期32-36,共5页Journal of Shaoxing University

基　　金：浙江省科技厅面上项目(2008C33047);绍兴市科技局重点项目(2009A22019)

摘　　要：通过盆栽试验,研究了30个大白菜品种在受不同程度镉(Cd)污染的土壤中吸收和积累镉能力的差异.结果表明:a.在土壤镉浓度为0.6mg.kg-1时,白菜Cd含量超标率为23.33%,而在土壤镉浓度为1.2mg.kg-1时超标率达46.67%,表明大白菜容易受到Cd污染.b.以大白菜地上部分的镉含量、不同土壤中白菜镉含量的递增率及生物量变化率为指标,研究得出四季王春白菜、丰研夏帅、改良夏帅、玉丰55白菜、多抗四号和丰抗70为镉低积累品种,可在镉轻度污染土壤中推广种植.Absorption and accumulation ability of cadmium among 30 Brassica pekineruis varieties in different cadmium - polluted soils are studied in pot experiments. Results show as follows：a. Percentage of Brassica pekinensis varieties whose cadmium contents exceed the National Edible Standard is 23.33 % and 46.67 % as the cadmium concentration in soil is 0.6 mg·kg^-1and 1.2 mg·kg^-1 respectively, which means Brassica pekinensis varieties are sensitive to cadmium pollution; b. According to the cadmium contents in shoot, Cd contents increase rate and biomass change rate in different cadmium - polluted soils, the paper indicates that Sijiwangchunbaicai, Fengyanxiashuai, Gailiangxiashuai, they can be popularized in mildly - polluted soils by cadmium.

关 键 词：大白菜 镉 污染土壤 积累 品种 差异 

分 类 号：S634[农业科学—蔬菜学]