| 堆肥缓解土壤镉的植物毒性: 对白菜生长的影响 |
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| 作者姓名： | CHEN Han-Song HUANG Qiao-Yun LIU Li-N CAI Peng LIANG Wei LI Ming |
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| 作者单位： | [1]Key Laboratory of Subtropical Agriculture and Environment of Ministry of Agriculture, Huazhong Agricultural University, Wuhan 430070 （China） [2]State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070 （China） |
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| 基金项目： | Project supported by the National High Technology Research and Development Program (863 Program) of China(No. 2006AA06Z350) |
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| 摘 要： | The growth performance of pakchoi (Brassica chinensis L.) in relation to soil cadmium (Cd) fractionations was investigated to evaluate the remediating effect of poultry manure compost on Cd-contaminated soil. A yellow-brown soil (Alfisol) treated with various levels of Cd (0–50 mg Cd kg-1 soil) was amended with increasing amounts of compost from 0 to 120 g kg-1 . Compost application transformed 47.8%–69.8% of soluble/exchangeable Cd to the organic-bound fraction, and consequently decreased Cd uptake of pakchoi by 56.2%–62.5% as compared with unamended soil. Alleviation of Cd bioavailability by compost was attributed primarily to the increase of soil pH and complexation of Cd by organic matter including dissolved organic matter. In general, the improvement of pakchoi performance was more pronounced in higher Cd-contaminated soil. Addition of large amount of compost also favored the anti-oxidative capability of pakchoi against Cd toxicity. This low cost remediation method seems to be very effective in the restoration of Cd-contaminated soils.
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| 关 键 词： | 粪便堆肥 生长性能 土壤镉 小白菜 药害 畜禽 土壤pH值 生物利用度 |
| 收稿时间： | 13 January 2009 |
Poultry manure compost alleviates the phytotoxicity of soil cadmium:Influence on growth of pakchoi(Brassica chinensis L.) |
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| CHEN Han-Song,HUANG Qiao-Yun,LIU Li-N,CAI Peng,LIANG Wei,LI Ming.Poultry manure compost alleviates the phytotoxicity of soil cadmium:Influence on growth of pakchoi(Brassica chinensis L.)[J].Pedosphere,2010,20(1):63-70. |
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| Authors: | CHEN Han-Song HUANG Qiao-Yun LIU Li-N CAI Peng LIANG Wei and LI Ming |
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| Institution: | Key Laboratory of Subtropical Agriculture and Environment of Ministry of Agriculture, Huazhong Agricultural University, Wuhan 430070 (China);Key Laboratory of Subtropical Agriculture and Environment of Ministry of Agriculture, Huazhong Agricultural University, Wuhan 430070 (China); State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070 (China);Key Laboratory of Subtropical Agriculture and Environment of Ministry of Agriculture, Huazhong Agricultural University, Wuhan 430070 (China);Key Laboratory of Subtropical Agriculture and Environment of Ministry of Agriculture, Huazhong Agricultural University, Wuhan 430070 (China);Key Laboratory of Subtropical Agriculture and Environment of Ministry of Agriculture, Huazhong Agricultural University, Wuhan 430070 (China);Key Laboratory of Subtropical Agriculture and Environment of Ministry of Agriculture, Huazhong Agricultural University, Wuhan 430070 (China) |
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| Abstract: | The growth performance of pakchoi (Brassica chinensis L.) in relation to soil cadmium (Cd) fractionations was investigated to evaluate the remediating effect of poultry manure compost on Cd-contaminated soil. A yellow-brown soil (Alfisol) treated with various levels of Cd (0--50 mg Cd kg-1 soil) was amended with increasing amounts of compost from 0 to 120 g kg-1. Compost application transformed 47.8%--69.8% of soluble/exchangeable Cd to the organic-bound fraction, and consequently decreased Cd uptake of pakchoi by 56.2%--62.5% when compared to unamended soil. Alleviation of Cd bioavailability by compost was attributed primarily to the increase of soil pH and complexation of Cd by organic matter including dissolved organic matter. In general, the improvement of pakchoi performance was more pronounced in higher Cd contaminated soil. Addition of large amount of compost also favored the anti-oxidative capability of pakchoi against Cd toxicity. This low cost remediation method seems to be very effective in the restoration of Cd-contaminated soils. |
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| Keywords: | contamination heavy metal plant remediation |
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