The effect of different land management on soil microbial biomass and organic matter is of importance for a sustainable agriculture. The results showed that pH, bulk density and moisture content had no significant difference between treatments. Although soil organic C and microbial biomass C under wheat were higher than those under fallow state, the contents of total N and microbial biomass N under fallow were higher than those under wheat. The ratio of microbial biomass C to organic C and the ratio of micr...