| 土壤性质对烟草中镉富集的影响及预测模型研究 |
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| 引用本文： | 王 卫,梁振飞,李菊梅,石 屹,刘继芳,马义兵.土壤性质对烟草中镉富集的影响及预测模型研究[J].土壤,2014,46(1):178-183. |
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| 作者姓名： | 王 卫 梁振飞 李菊梅 石 屹 刘继芳 马义兵 |
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| 作者单位： | 中国农业科学院农业资源与农业区划研究所/国家土壤肥力与肥料效益监测站网 |
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| 基金项目： | 国家烟草专卖局特色优质烟叶开发重大科技专项低危害烟叶开发项目(TS-06-20110037)资助 |
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| 摘 要： | 利用15个不同性质的土壤进行盆栽试验,研究了土壤性质对烟草中镉(Cd)富集的影响及预测模型。结果表明,影响烟草中Cd的主要土壤因素依次为土壤Cd浓度、pH、有机质含量。酸性土壤中烟草对土壤Cd具有较强的富集作用。外源Cd比土壤中原生Cd更容易被烟草吸收。土壤基本性质与烟草Cd浓度的数量关系为:Log烟草Cd]=3.04+1.212Log土壤Cd]-0.270pH-0.264LogOC],利用此方程能够很好地预测烟草中Cd浓度。通过降低土壤中Cd的浓度或有效性,提高土壤pH等措施可有效降低烟叶中Cd的浓度。
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| 关 键 词： | 土壤性质 烟草 镉 富集规律 |
Studies on Effects of Soil Properties on Cd Accumulation in Tobacco and Prediction Model |
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| WANG Wei,LIANG Zhen-fei,LI Ju-mei,SHI Yi,LIU Ji-fang,MA Yi-bing.Studies on Effects of Soil Properties on Cd Accumulation in Tobacco and Prediction Model[J].Soils,2014,46(1):178-183. |
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| Authors: | WANG Wei LIANG Zhen-fei LI Ju-mei SHI Yi LIU Ji-fang MA Yi-bing |
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| Institution: | National Soil Fertility and Fertilizer Effects Long-term Monitoring Network / Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences |
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| Abstract: | The accumulation of cadmium (Cd) in tobacco (Nicotiana tabacum L.) as affected and predicted by soil properties was investigated using 15 soils with a wide of properties and pot experiments. Results indicated that the main soil factors affecting the accumulation of Cd in tobacco were in the following order: soil Cd concentration, pH and organic matter content. The accumulation of Cd in tobacco plants in acidic soils was greater than that in alkaline soils. Also, it was found that exogenous water soluble Cd added to soils was more easily absorbed by tobacco compared with Cd in soils. The quantitative relationship between concentration of Cd in tobacco plants and soil properties was log Plant Cd] = 3.041 + 1.212Log Soil Cd] - 0.270pH - 0.264log Organic carbon], which could be used to predict well the concentration Cd in tobacco plants based on soil Cd, pH and organic carbon content. Meanwhile, the results showed that the concentration of Cd in tobacco plants could be significantly reduced by increasing soil pH and decreasing concentration of soil Cd. |
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| Keywords: | Soil properties Tobacco Cadmium Accumulation |
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