Effects of organic and inorganic slow-release compound fertilizers on microbial biomass carbon and nitrogen,and microbial community structure in soil

Community structure and edaphon quantity play important roles in soil quality changes and nutrition cycling.There have been many studies on the relationships between soil microbial properties and fertilizer application. However,to our knowledge,there is no information concerning the soil microbial properties affected by organic and inorganic slowrelease compound fertilizers,which are widely used in agricultural production. To reveal the influence of slow-release compound fertilizer on soil microorganisms,six treatments,consisting of soil mixed with different fertilizers,were placed in an incubator at 25 [degrees]C and 80% field capacity. These were a control( CK,without fertilization),moderate doses of chemical fertilizer( CF1),common compound fertilizer( CCF1),slow-release compound fertilizer( SRF1),and slow-release compound fertilizer at high and excessive levels( SRF2 and SRF3,respectively),and each treatment was repeated three times. Soil microbial properties,such as contents and compositions of microbial