| 应用Langmuir等温式解释我国东北某些土壤对磷酸离子的吸附作用 |
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| 引用本文： | 叶炳,王虹.应用Langmuir等温式解释我国东北某些土壤对磷酸离子的吸附作用[J].土壤学报,1984,21(1):21-28. |
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| 作者姓名： | 叶炳 王虹 |
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| 作者单位： | 中国科学院林业土壤研究所;中国科学院林业土壤研究所 |
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| 摘 要： | 目前应用Langmuir吸附等温式来探讨土壤对磷酸离子的吸附作用,较为广泛.自从Olsen(1957)系统地报道以来,从机理到结合生产实际的研究已有大量的报道,我国近年来也有研究.由于土壤本身组成的复杂性,多数学者用纯物质(如纯粘土或铁与铝的含水氧化物等)进行吸附等温式的机理研究,已取得了很多结果.
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AN INTERPRETATION FOR THE PHOSPHATE ADSORPTION IN SOME SOILS IN NORTH-EASTERN CHINA BY MEANS OF LANGMUIR ISOTHERM |
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| Ye Bing and Wang Hong.AN INTERPRETATION FOR THE PHOSPHATE ADSORPTION IN SOME SOILS IN NORTH-EASTERN CHINA BY MEANS OF LANGMUIR ISOTHERM[J].Acta Pedologica Sinica,1984,21(1):21-28. |
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| Authors: | Ye Bing and Wang Hong |
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| Institution: | Institute of Forestry and Pedology, Academia Sinica;Institute of Forestry and Pedology, Academia Sinica |
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| Abstract: | In this paper,Langmuir isotherm was used for the interpretation of the phosphate adsorption in soils.The soil samples tested were collected from the representative soils in north-eastern China.Meanwhile,the fractionation of inorganic phosphates were conducted.Results showed that the maximum adsorption was conrrelated negatively with soil pH,and positively with CEC.Moreover,the product of parameters in Langmuir equations (K1×K2 was conrrelated negatively with desorption %:Besides,the acid soils were rich in occluded Fe-P,but low in desorption %.While the calcareous soils generally possessed higher desorption %,even though the Ca-P and Fe-P in soils were extremely high.The Al-P was increased after the soil samples treated with KH2PO4solution.The Al-P was increaced with the increase of phosphate adsorption. |
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