The three yearss field experiments were investigated effects of planting Chinese Milk Vetch without the straw return combined with different fertilizer application rate on soil fertility,rice agronomic traits,rice yield,and economic efficiency to find the best management.The results showed that compared with the traditional control treatment(B1),the content of soil alkali-hydrolyzed N,available P,and available K are decreased for treatment of planting Chinese Milk Vetch without fertilizer(B2),while showed no significant change for other treatments of planting Chinese Milk Vetch combined with 100%(B3),90%(B4),80%(B5),and 70%(B6)of control fertilizer respectively.There are no significant differences in soil organic carbon among treatments.The rice yields among the treatments were B2