| pH和添加有机物料对3种酸性土壤中磷吸附-解吸的影响 |
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| 引用本文： | 马良,徐仁扣.pH和添加有机物料对3种酸性土壤中磷吸附-解吸的影响[J].生态与农村环境学报,2010,26(6). |
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| 作者姓名： | 马良 徐仁扣 |
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| 作者单位： | 1. 中国科学院南京土壤研究所土壤与农业可持续发展国家重点实验室,江苏,南京,210008;中国科学院研究生院,北京,100049
2. 中国科学院南京土壤研究所土壤与农业可持续发展国家重点实验室,江苏,南京,210008 |
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| 基金项目： | 中国科学院知识创新工程重要方向项目群(KZCX2-YW-Q10-3);中国科学院知识创新工程领域前沿项目(ISSASIP0711) |
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| 摘 要： | 研究了pH和添加有机物料对红壤、砖红壤和水稻土中磷吸附-解吸的影响。结果表明,砖红壤和水稻土中磷的吸附量和解吸量均随pH的升高而降低,pH对红壤中磷吸附和解吸的影响很小。土壤阳离子交换量(CEC),铁、铝氧化物含量和有机质含量是影响磷吸附的主要因素。红壤的CEC和有机质含量很低,铁、铝氧化物含量高,因而对磷的吸附量最高。砖红壤和水稻土CEC较高,土壤表面对磷的排斥作用较大,而且较高含量的有机质覆盖了土壤表面的磷吸附位,因此这2种土壤对磷的吸附量低于红壤。添加稻草并进行恒温培养可使红壤和水稻土对磷的吸附量显著减少,但对砖红壤中磷吸附的影响较小。添加稻草使土壤磷的解吸量和解吸率增加,从而增加了土壤中吸附性磷的活性。
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| 关 键 词： | 磷吸附-解吸 pH 铁、铝氧化物 酸性土壤 有机物料 砖红壤 红壤 红壤性水稻土 |
Effects of Regulation of pH and Application of Organic Material on Adsorption and Desorption of Phosphorus in Three Types of Acid Soils |
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| MA Liang,XU Ren-kou.Effects of Regulation of pH and Application of Organic Material on Adsorption and Desorption of Phosphorus in Three Types of Acid Soils[J].Journal of Ecology and Rural Environment,2010,26(6). |
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| Authors: | MA Liang XU Ren-kou |
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| Institution: | MA Liang1,2,XU Ren-kou1(1.State Key Laboratory of Soil and Sustainable Agriculture,Institute of Soil Science,Chinese Academy of Sciences,Nanjing 210008,China,2.Graduate University of Chinese Academy of Sciences,Beijing 100049,China) |
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| Abstract: | Effects of regulation of pH and application of organic material on adsorption and desorption of phosphorus in red soil,latosol and paddy soil were studied.It was found that both adsorption and desorption of phosphorus in latosol and paddy soil decreased with rising pH,but the phenomenon was not as significant in red soil.Soil cation exchange capacity,contents of organic matter,iron and aluminum oxides were the main factors affecting adsorption and desorption of phosphorus in these soils.Red soil was low in ... |
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| Keywords: | adsorption-desorption of phosphorus pH iron and aluminum oxides acid soil organic materials latosol red soil paddy soil |
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