| 添加石灰、有机物料对酸性土壤镉活性的影响 |
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| 引用本文： | 邵孝侯,胡霭堂,秦怀英.添加石灰、有机物料对酸性土壤镉活性的影响[J].南京农业大学学报,1993(2). |
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| 作者姓名： | 邵孝侯 胡霭堂 秦怀英 |
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| 作者单位： | 河海大学土壤室，南京农业大学自然资源与环境科学系，南京农业大学自然资源与环境科学系 210013 |
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| 摘 要： | 本文研究了添加石灰(CaCO_3),有机物料(稻草、苕子)后酸性土壤 Cd 活性变化以及淹水,培养时间对酸性土壤 Cd 的活性影响。结果表明,施用石灰、有机物料后,酸性土壤 pH 上升,有效 Cd 含量下降,其有效 Cd 量与培养土壤 pH 呈明显负相关。淹水后,除施石灰处理外,所有处理土壤 pH 升高,有效态 Cd 降低,而培养时间对土壤 Cd 的活性无显著影响。土壤 Cd 的形态分级表明,和对照相比,添加石灰处理,松结有机态 Cd 和碳酸盐结合态 Cd 增多;添加有机物处理,土壤中松结有机态 Cd 和紧结有机态Cd 提高,进一步揭示了添加石灰、有机物料后土壤 Cd 活性降低的原因。
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| 关 键 词： | 土壤 镉 形态 活性 石灰 有机物料 淹水 |
EFFECTS OF APPLICATION OF LIME AND ORGANIC MATERIALS ON ACIDIC SOIL Cd AVAILABILITY |
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| Shao Xiaohou Hu Aitang Qin Huaiying.EFFECTS OF APPLICATION OF LIME AND ORGANIC MATERIALS ON ACIDIC SOIL Cd AVAILABILITY[J].Journal of Nanjing Agricultural University,1993(2). |
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| Authors: | Shao Xiaohou Hu Aitang Qin Huaiying |
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| Abstract: | The influences of application of lime,organic materials,waterlogging,and incubating timeon acidic soil Cd availability were studied.The results showed that available Cd cotent of acidic soils de-creased after application of lime,vetch and rice straw,and was negatively related to soil pH.The use of theabove substances evidently reduced soil exchangable Cd level.Amounts of Cd weakly bound to organic mat-ter and carbonates-bound Cd were increased for lime treatments,whiie the amounts of organically boundCd were raised for organic material treatments as compared with that of the control.The results also indi-cated that waterlogging reduced Cd availability of acidic soils since soil pH tended to neutral and Eh was de-creased.However,no significant effect of incubation time on soil Cd availability was found. |
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| Keywords: | soil Cd forms availability lime organic materials waterlogging |
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