水稻—红螯螯虾种养模式的经济效益分析OACSTPCD

The economic benefits of rice-Cherax quadricarinatus co-farming were clarified,and the total benefits,net benefits,input-output,etc.,were analyzed,which can provide reference for the precise policy support for the promotion of rice-Cherax quadricarinatus co-farming model.The input-output situation of 20 business owners in Ningbo City,Zhejiang Province in recent 3 years was followed up and investigated by interviews and surveys,checking accounts and questionnaires,and the economic benefits of rice-Cherax quadricarinatus co-farming and rice single cropping were analyzed and compared.The results showed that the average total income and net income were 139500 and 50835 yuan/hm2 respectively,which were much higher than that of rice monoculture.In the past three years,the average total investment of rice-Cherax quadricarinatus co-farming was 88665 yuan/hm2,which was 2.83 times that of rice monoculture.The average output-input ratio in recent three years was 1.65,which was 1.94 times that of rice monoculture.In rice-Cherax quadricarinatus co-farming,the composition of net income was 70.6%for rice and 29.4%for Cherax quadricarinatus,and the contribution of rice to net income was greater than that of Cherax quadricarinatus.It is suggested that the government should strengthen support for rice-Cherax quadricarinatus co-farming model,and strengthen support for key links such as infrastructure investment transformation,shrimp fry purchase,brand building,technology promotion and training in rice-Cherax quadricarinatus co-farming model.