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中国农学通报

中国农学通报 ›› 2010, Vol. 26 ›› Issue (19): 349-353.

所属专题： 土壤重金属污染

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

Cd,Pb单一和复合污染条件下3种常见中草药对Pb、Cd的富集研究

宋佳 赵秀兰 袁阳洋   

  • 收稿日期:2010-04-27 修回日期:2010-05-23 出版日期:2010-10-05 发布日期:2010-10-05

Growth, Accumulation of Cd and Pb by Three Common Traditional Chinese Herbal Medicines under Cd, Pb and Their Combined Pollution

  • Received:2010-04-27 Revised:2010-05-23 Online:2010-10-05 Published:2010-10-05

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摘要：

以紫苏(Perilla frutescens(L.)Britt)，车前草(Herba Plantaginis)和益母草(Herba Leonuri) 三种中草药为研究对象，通过盆栽试验，研究三者在单一和复合污染条件下对土壤中Cd，Pb的富集、转移及自身生长特征；结果表明:紫苏对Cd有很强的忍耐能力. 对Pb的忍耐能力顺序为:车前草>益母草>紫苏. Cd-Pb复合污染对紫苏和车前草的生长的抑制存在协同作用，对益母草则存在拮抗作用;地上部对Cd、Pb的富集能力的顺序为车前草>益母草>紫苏;Cd-Pb复合污染促进紫苏、车前草对Cd的富集，抑制益母草对Cd吸收，对车前草Pb含量的影响不明显，却促进紫苏、益母草对Pb富集。Cd-Pb复合污染对3种中草药中Cd由根向地上部的转移有拮抗作用，对Pb在其体内的向上转移分别存在促进、无影响、抑制作用

关键词: 玉米深加工, 玉米深加工, 生物法, A—B法, 有机污染

Abstract:

A pot experiment was carried out to investigate the accumulation and transfer of Cd and Pb in three traditional Chinese herbal medicines, namely Perilla frutescens(L.)Britt, Herba Plantaginis and Herba Leonuri, which were cultivated under single and compound pollution of Cd and Pb. The results showed that Perilla frutescens(L.)Britt had a strong tolerantion to Cd toxicity, and the tolerance to Pb toxicity followed the order: Herba Plantaginis> Herba Leonuri> Perilla frutescens(L.)Britt. Cd-Pb combined pollution had a synergistic effect on the growth of Perilla frutescens(L.)Britt and Herba Plantaginis, while had an antagonism effect on the growth of Herba Leonuri. The accumulation ability of Cd and Pb in the shoot followed the order : Herba Plantaginis > Herba Leonuri > Perilla frutescens(L.)Britt. Cd-Pb compound pollution facilitated Perilla frutescens(L.)Britt and Herba Plantaginis ’s absorbability of Cd but had contrast effect on Herba Leonuri .The compound pollution had no distinct influence on the accumulation of Herba Plantaginis to Pb, but help to the accumulation of Pb by Perilla frutescens(L.)Britt and Herba Leonuri. Cd-Pb compound pollution had an antagonistic effect on the transfer of Cd from root to shoot in the three traditional Chinese herbs medicine and had stimulative，unavailable and restraining effect on the three traditional Chinese herbs medicine in turn respectively.