To examine the effects of effective microorganisms( EM) application with straw cover and organic fertilizer on soil physicochemical properties and peach photosynthetic characteristics,three treatments including EM-organic fertilizer( EM-O),EM-straw cover( EM-S) and control( CK) were employed in a late-maturing peach orchard in Linyi City,Shandong Province. Soil physicochemical properties( soil bulk density,porosity,organic matter content,and available nutrient content) and chlorophyll content were measured....