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应用生态学报 ›› 2005, Vol. 16 ›› Issue (11): 2182-2186.

• 研究论文 • 上一篇    下一篇

镉和铅污染对烤烟根区土壤微生物及烟叶品质的影响

马新明, 李春明, 袁祖丽, 熊淑萍, 张贵龙   

  1. 河南农业大学农学院, 郑州 450002
  • 收稿日期:2004-11-30 修回日期:2005-05-10 出版日期:2005-11-15 发布日期:2005-11-15
  • 通讯作者: 马新明,男,1963年生,博士,教授.主要从事作物生态和作物模型研究,发表论文60余篇.E-mail:xinmingma@371.net
  • 基金资助:
    国家烟草专卖局重大招标资助项目(110200201005).

Impacts of Cd and Pb pollution on soil microbes in tobacco root zone and on tobacco leaf quality

MA Xinming, LI Chunming, YUAN Zuli, XIONG Shuping, ZHANG Guilong   

  1. College of Agronomy, Henan Agricultural University, Zhengzhou 450002, China
  • Received:2004-11-30 Revised:2005-05-10 Online:2005-11-15 Published:2005-11-15

摘要: 通过盆栽试验,研究了Cd和Pb污染对烤烟根区微生物和烟叶品质的影响.结果表明,随着Cd、Pb处理浓度的增加,烤烟根区4种微生物数量均呈减少趋势;低浓度Cd(≤10 mg·kg-1)和Pb(≤300 mg·kg-1)下,烤烟根区4种微生物数量降幅最大;烤烟烟叶中品质指标糖/碱比和氮/碱比升高,化学成分组成趋于不协调,不利于烟叶香味的形成.烟叶K含量与Cd和Pb污染浓度呈负相关,与Cd污染下根区钾细菌数量呈显著(或极显著)正相关,与Pb污染根区钾细菌数量相关不显著.

关键词: Cd和Pb污染, 烤烟, 根区, 土壤微生物, 品质

Abstract: A pot experiment was conducted to study the impacts of Cd and Pb pollution on soil microbes in tobacco root zone and the quality of tobacco leaves.The results indicated that the higher concentrations of Cd and Pb in soil,the less soil microbes in tobacco root zone.When the levels of Cd and Pb were ≤10 and ≤300 mg·kg-1,respectively,the individuals of soil microbes decreased acutely.As for the quality indexes of tobacco leaves,the ratios of reductive sugar/nicotine and total-N/nicotine increased,and the main components became disharmony,which was disadvantage for the fragrance forming of tobacco leaves.The K content in tobacco leaves had a negative correlation with soil Cd and Pb concentrations,but a significantly positive correlation with the quantity of potassium bacteria in root zone under Cd pollution.No significant correlation was observed between the K content in tobacco leaves and the quantity of potassium bacteria in root zone under Pb pollution.

Key words: Cd and Pb pollution, Tobacco, Root zone, Soil microbe, Quality

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