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铜、锌污染对油菜生长和土壤酶活性的影响

杨红飞;严密;姚婧;王友保;刘登义   

  1. 安徽师范大学生命科学学院安徽省重要生物资源保护与利用研究重点实验室, 安徽芜湖 241000
  • 收稿日期:2006-05-21 修回日期:1900-01-01 出版日期:2007-07-16 发布日期:2007-07-16

Impact of Cu and Zn pollution on rape growth and soil enzyme activity.

YANG Hong-fei; YAN Mi; YAO Jing; WANG You-bao; LIU Deng-yi   

  1. Key Laboratory of Conservation and Exploitation of Biological Resources of Anhui Province, College of Life Science, Anhui Normal University, Wuhu 241000, Anhui, China
  • Received:2006-05-21 Revised:1900-01-01 Online:2007-07-16 Published:2007-07-16

摘要: 通过盆栽试验,研究了Cu、Zn污染对油菜幼苗生长和土壤酶活性的影响.结果表明:Cu、Zn污染对水稻土中土壤酶活性的影响表现不同,Cu对土壤脲酶活性的影响最为强烈,且对脲酶活性的抑制能力强于Zn;Zn对过氧化氢酶活性的影响最为强烈.Cu对油菜生长的毒害及对油菜干质量的影响程度也高于Zn.Cu、Zn主要通过抑制根的生长及其物质积累来抑制油菜幼苗生长.因子分析发现,根干质量较其他生长指标对Cu、Zn更敏感,可作为Cu、Zn污染检测指标.

关键词: 森林类型, 土壤可溶性有机质, 微生物生物量, 酶活性

Abstract: A pot experiment was conducted to study the impact of Cu and Zn pollution on soil enzyme activities and rape seedlings growth. The results showed that Cu had a stronger inhibitory effect than Zn on soil urease activity, while Zn had more obvious impact on soil calatase activity. The damage on the growth and dry mass of rape was more serious under Cu than under Zn pollution. The inhibition of rape seedlings growth was mainly due to the inhibition of root growth and its material accumulation. Factor analysis indicated that root dry mass was more sensitive than other indices, which could be adopted to monitor soil Cu and Zn pollution.

Key words: forest type, soil soluble organic matter, microbial biomass, enzyme activity