Amount of nitrogen absorbed by plants correlated positively with maximal community biomass. Leaching of nirtogen was positively affected by mineralized soil nitrogen quantity, which was much higher in treatment PK, N1, N2, andN3PK.

• 施肥后群落对土壤氮素的吸收量基本与群落最大生物量正相关,秋冬季土壤氮素矿化量以PK、N_1、N_2、N_3PK处理较高,氮的淋失量与总矿化量有一定的正相关关系。