The kinetics of ammonium fixation and release of fixed ammonium in the soils of Hunan Province was studied using Batch equilibrium and aerobic culture-intermittent leaching methods.

• 采用振荡平衡法和好气培养-间歇淋洗法研究了湖南省主要旱地土壤对添加铵离子的矿物学固定和土壤固定态铵释放的动力学特性。