The effects of different kinds of ecological restoration(alfalfa fallowing,natural vegetation restoration,and cropping) and fertilization management(chemical fertilizer + organic manure,chemical fertilizer + straw,chemical fertilizer application,and no fertilizer application) on the physical properties of degraded black soil were investigated.Results showed that fertilization management decreased soil bulk density,but increased porosity,capillary capacity,max moisture capacity,field water capacity,and the content of water-sable aggregates as compared with natural vegetation restoration.Chemical fertilizer,together with organic manure,significantly improved them as compared with other fertilizer treatments.However,significant difference was only observed between alfalfa fallow and natural vegetation restoration in terms of bulk density and porosity due to short time of ecological restoration.Bulk density,porosity and capillary capacity,max moisture capacity,and field water capacity changed greatly in 0-10 cm soil layer as compared with them in 10-20 cm soil layer.Both the content of water-stable aggregates(0.25 mm) and the mean weight diameter increased in the ascendant order of natural restoration,alfalfa fallow,and fertilization management.