| 石灰氮对镉污染土壤中镉生物有效性的影响 |
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| 引用本文： | 刘昭兵,纪雄辉,田发祥,彭华,吴家梅,石丽红,李永华.石灰氮对镉污染土壤中镉生物有效性的影响[J].生态环境,2011(10):1513-1517. |
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| 作者姓名： | 刘昭兵 纪雄辉 田发祥 彭华 吴家梅 石丽红 李永华 |
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| 作者单位： | 湖南省土壤肥料研究所;湖南省农业环境研究中心;中南大学研究生院隆平分院; |
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| 基金项目： | 国家科技支撑计划项目(2007BAD89B11); 农业部公益性行业科研专项(200903015) |
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| 摘 要： | 以石灰作对比,在大田条件下研究了不同石灰氮用量对镉污染土壤中镉生物有效性的影响。结果表明,一定量石灰或石灰氮处理均能显著提高酸性土壤的pH值,降低污染土壤中有效态镉质量分数及水稻茎叶和糙米中的镉质量分数。与不施改良剂的对照相比,石灰施用量达到1 200 kg.hm-2时土壤pH值显著提高,土壤有效态镉质量分数降低12.6%（P〈0.05）,水稻茎叶和糙米中镉质量分数分别降低25.5%（P〈0.05）和28.3%（P〈0.05）;石灰氮施用量达到600 kg.hm-2时,土壤pH值显著高于对照,土壤有效态镉质量分数较对照降低10.9%（P〈0.05）,水稻茎叶和糙米中镉质量分数分别降低36.8%（P〈0.05）和33.0%（P〈0.05）。等量条件下（600 kg.hm-2）石灰氮对降低土壤镉有效性及水稻累积镉的效果相对优于石灰处理。因此,石灰氮与石灰一样可用于酸性重金属污染土壤的修复与改良,是一种极具潜力的土壤改良剂。
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| 关 键 词： | 石灰氮 镉污染土壤 镉 生物有效性 |
Effects of calcium cyanamide on bioavailability of cadmium in cadmium contaminated soil |
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| LIU Zhaobing,JI Xionghui,TIAN Faxiang,PENG Hua,WU Jiamei,SHI Lihong,LI Yonghua .Soil , Fertilizer Institute of Hunan Province,Changsha ,China,.Agriculture , Environment Research Center of Hunan Province,.Longping Branch of Graduate School of Central South University.Effects of calcium cyanamide on bioavailability of cadmium in cadmium contaminated soil[J].Ecology and Environmnet,2011(10):1513-1517. |
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| Authors: | LIU Zhaobing JI Xionghui TIAN Faxiang PENG Hua WU Jiamei SHI Lihong LI Yonghua Soil Fertilizer Institute of Hunan Province Changsha China Agriculture Environment Research Center of Hunan Province Longping Branch of Graduate School of Central South University |
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| Institution: | LIU Zhaobing1,2,JI Xionghui1,TIAN Faxiang1,3,PENG Hua1,WU Jiamei1,SHI Lihong1,LI Yonghua1 1.Soil and Fertilizer Institute of Hunan Province,Changsha 410125,China,2.Agriculture and Environment Research Center of Hunan Province,3.Longping Branch of Graduate School of Central South University |
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| Abstract: | The effects of different amount of calcium cyanamide on cadmium(Cd) bioavailability in Cd contaminated soil were studied in a field experiment,by using lime as comparison.The results showed that certain amount of lime or calcium cyanamide application could significantly increase the acid soil pH values,and decrease the available Cd content in soil and Cd content in rice.Compared with the control(with no amendment application),the soil pH values increased significantly,the soil available Cd content decreased... |
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| Keywords: | calcium cyanamide cadmium contaminated soil cadmium bioavailability |
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