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作 者 ：吕珊兰;杨熙仁;康新茸

期 刊 ：植物营养与肥料学报 1995年 1卷 3-4期 页码：29-35

关键词：吸附解吸；最大吸附量；需磷量；

Keywords:Adsorption, Desorption, Maximum amount of P adsorption (Xmax). Phosphate requiremunt.,

摘 要 ：本文探讨了不同质地土壤对磷的吸附与解吸。根据Langmuir方程式求出不同土壤对磷的最大吸附量。影响磷吸附的土壤理化性质主要为粘粒含量、碳酸盐含量和有效磷含量。以Freundhich方程式X=ac^b中的c值为每克土中含P0.2μg时而计算出的X量可做为施磷量的依据。

Abstract:In this paper, the adsorption and desorption of phosphorus in the different textuie soils were studied. The maximum amount of P adsorption (Xmax) was obtained from the Langmuir equation. The main chemical and physical properties, which affecting adsorption of P were clay content, CaCO₃ content and available P content in soil. Phosphorus requrement (X) was calculated from the Freundlich equation X-ac^b by the value of C at 0. 2ug/g P.

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