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.
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)
关键词
大白菜
镉
污染土壤
积累
品种
差异
Brassica pekinensis
cadmium - polluted soil
low cadmium accumulation
differences
