| 抗铅、镉菌株对土壤铅、镉生物有效性的影响 |
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| 引用本文： | 孙刚忠,王荣,曹霞,柯群,谭启玲,胡承孝,孙学成,何进.抗铅、镉菌株对土壤铅、镉生物有效性的影响[J].环境科学与管理,2011,36(11):103-107. |
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| 作者姓名： | 孙刚忠 王荣 曹霞 柯群 谭启玲 胡承孝 孙学成 何进 |
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| 作者单位： | 1. 华中农业大学资源与环境学院,湖北武汉,430070
2. 华中农业大学生命科学技术学院,湖北武汉,430070 |
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| 基金项目： | 国家科技支撑计划专题任务书(2006BAD17B08-04)B“南方菜地重金属污染控制技术集成与示范”校人才启动费(2004XRC059)“耐铅细菌耐铅机制探讨及与土壤铅污染的关系” |
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| 摘 要： | 将从土壤中分离到的2株能同时耐铅(Pb)、镉(Cd)的抗性菌株(编号为H1和H2)分别接种至Pb、Cd污染的土壤中进行小白菜盆栽试验,研究2株抗性菌株对土壤Pb、Cd生物有效性的影响。结果表明:H1菌株可专一性的钝化交换态Cd,降幅为43.78%,并能显著促进小白菜地上部生长,与对照相比增产79.62%;H2菌可同时降低交换态Pb、Cd的比重,降幅分别为30.31%和27.61%,但小白菜产量与对照无显著差异。此外,与对照相比,接菌处理均能显著降低小白菜地上部Pb、Cd含量。
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| 关 键 词： | Pb Cd 抗性菌株 生物有效性 钝化 |
Effects of Pb and Cd Resistance Strains on Bioavailability of Pb and Cd in Soil |
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| Sun Gangzhong,Wang Rong,Cao Xia,Ke Qun,Tan Qiling,Hu Chengxiao,Sun Xuecheng,He Jin.Effects of Pb and Cd Resistance Strains on Bioavailability of Pb and Cd in Soil[J].Environmental Science and Management,2011,36(11):103-107. |
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| Authors: | Sun Gangzhong Wang Rong Cao Xia Ke Qun Tan Qiling Hu Chengxiao Sun Xuecheng He Jin |
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| Institution: | 2 ( 1.College of Resources and Environment, Huazhong Agriculture University, Wuhan 430070, China; 2.College of Life Science and Technology, Huazhong Agriculture University, Wuhan 430070, China ) |
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| Abstract: | A pot experiment of Chinese cabbage with two resistance strains （labeled as H1 and H2） that were selected and isolated from the Pb＆Cd-contaminated soil was conducted to study the effects of Pb and Cd resistance strains on the bioavailabihty of Pb, Cd in the soil. The results showed that H1 strains deactivated the exchangeable Cd with a decline of 43.78%, and significantly promoted the shoot yield of Chinese cabbage with a increase of 79.62% compared with the control experiment; H2 strains reduced the proportion of the exchangeable Pb and Cd in soil, with a decline of 30.31% and 27.61%, respectively. But H2 strains have no effect on the yield of Chinese cabbage compared with the control experiment. In addition, compared with the control experiments, two inoculation treatments significantly reduced the contents of Pb and Cd in the shoot of Chinese cabbage. |
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| Keywords: | bioavailability cadmium deactivate lead resistance strains |
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