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本文研究了安徽省五种主要土壤对钼的等温吸附特性。实测吸附曲线与Freundlich、Langmuir和Temkin等温吸附方程都吻合,供试土壤的相关系数均达极显著水平。其中以Freundlich方程最好。实测Xm、X_(0.1)和X_(0.03)、(k×Xm)以及lgK与土壤供钼特性有关。它们的顺序为:棕红壤>黄褐土>灰潮土、砂姜黑土和黄潮土。高的环境pH和磷酸盐以及低的培养温度有利于土壤溶液中钼含量的增加。因而使土壤对植物供钼能力增加。
In this paper, the isothermal adsorption characteristics of molybdenum in five major soils of Anhui Province were studied. The measured adsorption curves are in good agreement with the isothermal adsorption equations of Freundlich, Langmuir and Temkin, and the correlation coefficients of the tested soils reached extremely significant levels. Which Freundlich equation is the best. The measured Xm, X_ (0.1) and X_ (0.03), (k × Xm), and lgK were related to the characteristics of soil Mo supply. Their order is: brown-red soil> yellow-brown soil> gray-tide soil, saprolite black soil and yellow tide soil. High ambient pH and phosphate and low incubation temperatures favor the increase of molybdenum content in soil solutions. Thus increasing soil availability of plants for molybdenum.