The effects of fertilization on rates of nitrogen ammonification,mineralization and nitrification were s tudied in the soil grown Amomum under tropical rainforest in Xishuanbanna using close -top Incubation.The results of the study showed that effects of fertilization were significant (P<0.01)to rates of nitrogen magnification,mineralization and nitrification.Rate of ammonification was added significantly(P<0.01)from0.66mg ·kg -1 ·30d -1 in control soil to 1.65mg ·kg -1 ·30d -1 in th...