Comprehensive Benefit Evaluation Of Rice And Shrimp Crop Model

With the rapid urbanization,the issue of food security has become increasingly prominent.At the same time,the traditional oil-based agricultural production model has caused serious agricultural surface pollution,which has tightened the resource and environmental constraints on Chinese agriculture and seriously hindered the high-quality development of agriculture and the modernization of agriculture and rural areas.The rapid development of the rice-shrimp crop model,an ecological recycling agriculture model that takes into account farmers’ economic income,ecological environment and social impact,has gradually become the focus of political and academic circles.However,with the rapid expansion of the farming area,the development of this model has many problems,which hinders its sustainable development;at the same time,the comprehensive benefits as an important criterion to measure the health of the development of this model,scientific and effective measurement of the comprehensive benefits of the rice and shrimp crop model has become an urgent task.Based on this,this paper uses the theory of sustainable development,the theory of green agriculture and the theory of farmers’ behavior as the theoretical basis,and 728rice-shrimp co-cropping households in the Jianghan Plain as the research object to measure the comprehensive benefits of farmers engaged in rice-shrimp co-cropping mode.Firstly,this paper constructs a comprehensive benefit evaluation index system based on existing research;secondly,the weights of the comprehensive benefit components of rice-shrimp crop households are measured using the entropy weight method,and the final benefit levels are obtained by calculation;again,the differences in benefits between farmers with different characteristics are tested using the KW rank sum test;finally,based on the above theoretical and data research,this paper proposes countermeasures for rice-shrimp crop Finally,based on the above theoretical and data research,this paper puts forward countermeasures and suggestions for the path of comprehensive benefit enhancement of the rice shrimp copulation model.The main findings of this paper are:(1)The weight size of the components of the comprehensive benefits of the rice-shrimp crop model: ecological benefits is greater than social benefits which is greater than economic benefits,of which the weight of ecological benefits is as high as 70.82%,while the contribution of economic benefits is less than 1%.(2)The average value of comprehensive benefits of farmers engaged in rice and shrimp crop model is only 0.0747,which is much less than 1,and still needs to be improved in future development.(3)The value of benefits brought by farmers engaged in rice-shrimp crop model is ranked from largest to smallest,ecological benefits is greater than social benefits which is greater than economic benefits,with specific values of 0.4826,0.1530,and 0.0397.(4)There are significant differences in benefits between households with different characteristics of rice-shrimp crop.According to the conclusion of the study,the countermeasures of this paper are recommended as follows: to strengthen the cost-saving and efficiency-boosting capacity of the rice-shrimp crop model and improve the economic benefits of the rice-shrimp crop model;to innovate the institutional mechanism of the rice-shrimp crop model industry and enhance the social benefits of the rice-shrimp crop model;to establish and promote the green production technology system of the rice-shrimp crop model and improve the ecological benefit level.The main innovations of this paper are:(1)the research content,the construction of a comprehensive benefit evaluation index system and evaluation model of rice and shrimp crop model.(2)The research object is micro-farmers,which fills the gap of existing research objects.