欢迎访问《中国农学通报》，
中国农学通报

中国农学通报 ›› 2011, Vol. 27 ›› Issue (22): 172-175.

所属专题： 园艺

• 林学 园艺 园林 • 上一篇    下一篇

小白菜吸收积累镉的品种差异研究

何飞飞 杨君   

  • 收稿日期:2011-03-14 修回日期:2011-05-31 出版日期:2011-09-05 发布日期:2011-09-05

Study on the Cultivar Difference of Cd Uptake and Accumulation of Brassica chinensis

  • Received:2011-03-14 Revised:2011-05-31 Online:2011-09-05 Published:2011-09-05

PDF (PC)

1204

摘要：

采用温室土培盆栽试验，比较不同镉浓度下27个小白菜品种吸收和积累镉能力的差异，探讨在一定镉污染土壤中小白菜可食部位镉含量低于国家最高允许限量标准最高限值品种（Cd-PSC）的存在可能性。结果表明：在土壤镉浓度0.516 mg/kg时，小白菜地上部分镉含量超过国家标准的为11.11%；而在土壤镉浓度1.133 mg/kg时其超标率达81.48%，表明小白菜容易受到镉污染。品种1（‘白梗白叶’）、品种11（‘京冠1号’）、品种19（‘高梗白’）、品种20（‘秋田火之清’）在2种镉浓度下地上部分镉含量均低于国家食用标准，但其生物量不受影响，存在着小白菜的Cd-PSC，可以推荐在土壤镉污染程度略超国家二级标准或具有潜在受污染风险的区域应用。

关键词: 质量安全, 质量安全

Abstract:

A new strategy for controlling Cd pollution of agricultural products, the pollution safe cultivar (PSC), i.e. the low Cd uptake and accumulation cultivars cropping in the low Cd concentrations soil, was studied in this article. Twenty seven cultivars of Brassica chinensis were conducted with different concentration Cd soil in the pot study in the greenhouse. The result showed that the percentage of Cd content of edible part exceeded the national edible standard was 11.11% on the 0.516 mg/kg Cd soil. The percentage was 81.48% on the 1.113 mg/kg Cd soil, suggesting that Brassica chinensis was easily polluted by Cd. The Cd content of shoot of cultivar 6 (‘Bai Gen Bai Ye’), 11(‘Jing guang 1’), 19 (‘Gao Geng Bai’) and 20 (‘Qiu Tian Huo Zhi Qing’) was lower than the concentration of national edible standard, while the fresh weight of shoot did not reduce. These Brassica cultivars could be cropped in the light Cd pollution soil.