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生态学杂志 ›› 2000, Vol. ›› Issue (1): 19-22.

• 研究报告 • 上一篇    下一篇

铅、镉、铬单一和复合污染对青菜种子萌发的生物学效应

任安芝, 高玉葆   

  1. 南开大学生物学系, 天津 300071
  • 收稿日期:1998-02-26 出版日期:2000-02-10
  • 基金资助:
    南开大学科技发展基金资助

Effects of Single and Combinative Pollutions of Lead, Cadmium and Chromium on the Germination of Brassica chinensis L

Ren Anzhi, Gao Yubao   

  1. Department of Biology, Nankai University, Tianjin 300071
  • Received:1998-02-26 Online:2000-02-10

关键词: 喀斯特峰丛洼地, 土壤微生物, 环境, 土地利用方式

Abstract: Germiantion of Brassica chinensis L. grown in the solution with different concentrations of lead, cadmium and chromium (single and combinative) was investigated. Root lengths decreased with the increase of lead, cadmium and chromium in hydroponic solution. The physiological toxicity order for these three ions was Cr6+ >Cd2+ >Pb2+ . The uptake of Pb by Brassica chinensis was enhanced with Pb addition. The toxicity of Cr and Pb was reduced due to precipitation of Cr2O72- and Pb2+ . The toxicity of Cd to plant decreased when Cr6+ was added.

Key words: depression between karst hills, land use pattern., soil microbe, environment