论文部分内容阅读
采用等温吸附试验方法研究了模拟酸雨对荔枝果园土壤磷的吸附与解吸特性的影响。试验结果表明,不同处理间土壤对磷的最大吸附量(Xm)为pH2.5>pH4.5>CK=pH6.5,其中pH2.5的酸雨淋溶处理对磷的最大吸附量(Xm)与其它处理间差异显著;土壤吸附磷的解吸量(Xd)分别与相应的吸附量(X)和原平衡溶液浓度(C)呈显著的指数相关和线性相关,随着土壤对吸附量的增加,土壤磷的解吸量呈指数增长。
The effects of simulated acid rain on the phosphorus adsorption and desorption characteristics of litchi orchard soil were studied by isothermal adsorption experiments. The results showed that the maximum amount of phosphorus (Xm) adsorbed by soil was pH2.5> pH4.5> CK = pH6.5, and the maximum phosphorus adsorption capacity (Xm) (P <0.05). The desorption amount of adsorbed phosphorus (Xd) in soil was significantly and exponentially correlated with the corresponding adsorption amount (X) and the concentration of the original equilibrium solution (C) , Soil desorption of phosphorus showed an exponential growth.