Based on the survey data of 342 pig farmers in Hunan Province,this study integrates the six prerequisites of the formal institutions and the informal institutions,and combines the two emerging methods of NCA and QCA to explore the influence mechanism of institutional co...MORE Based on the survey data of 342 pig farmers in Hunan Province,this study integrates the six prerequisites of the formal institutions and the informal institutions,and combines the two emerging methods of NCA and QCA to explore the influence mechanism of institutional conditions on the behavior effect of manure resource u...