Characteristics of phosphate sorption and sorbed-P release in paddy soils
水稻土对磷的吸附及吸附态磷的释放特征

Characteristics of phosphate sorption and sorbed-P release in paddy soils were studied using adsorption isotherm and ion exchange resin method.The results show that phosphate adsorption isotherm of 20 rice soils of Jinhua City of Zhejiang Province fitted in with Langmuir equation very well.The correlation coefficients were from 0.970 to 0.999.Parameters of Xm,X0.2,K and MBC(maximum buffer capacity) of the Langmuir equation might correlate with soil properties.The highest values of Xm,K,MBC and X0.2 were fou...