To explore the rule and its influencing factors of nitrogen(N)fertilizer adsorbtion on the albic soil for better instruction of applying N fertilizer,equilibrium adsorption method was performed to study the effects of temperature,content of organic matter,oscillation time and ionic strength on the adsorption of NH+4 on the albic soil.The results shown that(1)with the initial concentrations of NH+4 increasing(0~1 000 mg/L),its adsorption capacity on the albic soil was also enhanced.When the initial NH4+ concentration exceeded 600 mg/L,the adsorption capacity gradually reached the saturated state.The increase of reaction temperature(293~313K)was helpful for the absorption.The changes of apparent thermodynamic parameters(ΔG<0,ΔH>0,ΔS>0)indicated that the NH+4 adsorption process was spontaneous,endothermic and increased in degree of disorder;(2)The gradual decline of organic matter content with soil depth could lower the NH+4 adsorption capacity;(3)The sorption kinetics was affected by determinable oscillation time,which could be divided into the initial fast phase and the subsequent slow phase after 360 min.This dynamic process was fitted well by all the four selected equations;From the thermodynamic parameters of activation(ΔG≠>0，ΔH≠>0，ΔS≠<0)calculated by the transition state theory,it was shown that the adsorption of NH+4 onto the albic soil was energyconsumed with increasing of the degree of order;(4)The different concentrations of coexisting Na+ in a certain range had different influencing mechanisms on the adsorption of NH+4.When the concentration of Na+ exceeded 0.4 mol/L,the adsorption would be enhanced.In all,the backwardshift N fertilizer application in the albic soil with high fertility could be helpful to enhance its utilization efficiency.