Cost-Benefit Analysis And Environmental Effect Evaluation Of Rice-Shrimp Co-Production Model

With the current level of agricultural production,in the process of producing rice as the main food crop,it is subject to the constraints of current resources and environment.In order to enhance the benefits within limited space and resources,the combination of rice cultivation and aquaculture is It provides new ideas.The rice-shrimp cooperative model is one of the rice-field ecological breeding models.The cultivation and breeding of rice and crayfish not only achieve stable income increase,mutual benefit and win-win,but also promote the transformation and upgrading of traditional agriculture.Hubei Province is a large grain producing province in China,and it also provides a good foundation for the production of rice and shrimp.The combination of rice and shrimp is not only the production of rice and lobster,but the combination of the two,which brings about changes in the production costs of the two,which in turn leads to changes in economic and ecological benefits.Therefore,this paper analyzes the cost-effectiveness and environmental effects of the rice-shrimp co-production mode in Qianjiang City,Hubei Province,and understands the economic and environmental effects of the rice-shrimp co-production model,and proposes relevant policy recommendations to provide a comprehensive model for rice and shrimp farming.reference.This study selected the township farmers and enterprises in Qianjiang City,Hubei Province,which used the rice-shrimp co-production model for production.Through the questionnaire survey,the cost income data of the rice-shrimp cooperative production process of the farmers in Qianjiang City,Hubei Province,and the production of the rice-shrimp cooperatives in Qianjiang City,Hubei Province were combined with the life cycle assessment method.The co-production process performs environmental impact analysis.By quantifying the comprehensive benefits,we can help us to understand more clearly the advantages and disadvantages of rice and shrimp farming.Through the comprehensive analysis of cost-benefit analysis and life cycle assessment of rice-shrimp co-production in Qianjiang City,Hubei Province,we have drawn the following five conclusions:the economic and social benefits of rice-shrimp co-production are obvious,and the rice-shrimp co-production The cost input has increased more than ten times than the input cost of rice,and its overall income has increased by about 4 times.The scale and standardization of rice and shrimp co-production have a positive effect on production.In the process of cost-benefit analysis,j ade The benefits of large-scale production in Mouth Town and Xiongkou Town are significantly higher than those produced by other towns.The average output of Jiyukou Town and Xiongkou Town is 9141.48 yuan and 9708.85 yuan,which is higher than other townships thousands of yuan.scale operation has promoted the development of the rice-shrimp co-production mode to a certain extent;the rice and lobster production development is relatively unbalanced during the rice-shrimp co-production process,and the economic benefits generated by the crayfish in the co-production process of rice and The output value of shrimp is about 3388.28 yuan,while the output value of rice is only 653.34 yuan.Farmers are more inclined to increase the proportion and area of lobster culture ditch in paddy fields.Conducive to rice shrimp farming industry healthy development;rice shrimp farming technology promotion should be improved,its implementation has been the lack of subsidies.Most of the rice-shrimp cooperative technology models in Qianjiang City rely solely on the accumulation of traditional experience.Without scientific means,the promotion and development of the centralization process cannot be achieved well.The rice-shrimp cooperatives have environmental eutrophication.The obvious increase in environmental pollution is mainly reflected in the influence of feed and fertilizer production and application on the NH3 volatilization rate,causing global warming,environmental acidification and eutrophication.In view of the above research conclusions,the following policy recommendations are proposed:Do a good job of policy guidance,control the scale of breeding;balance economic and ecological aspects,consolidate the scientific and technological development and talent base in the industrial field;Maintain the stability and innovation of the industrial chain of rice and shrimp farming;The construction of the extension service system in the production process,vigorously develop modern seed industry;Cultivate large-scale agricultural management main rice and shrimp breeding large households and family farms;Strengthen local land circulation and concentration;The government will increase support and subsidies for the production of rice and shrimp co-production.