The Emergy Analysis Of Vegetable,Wood Frog And Fly Maggot Three-in-one Production Pattern

Agriculture,as the foundation of the national industry,provides security for all the industries.Meanwhile,agricultural products pollution and agricultural wastes pollution are extending continuously.It treats to the survival of people gradually.Food quality is attached more importance,and our country also realized the importance of energy saving disposal of waste materials in agriculture.In this context,taking the sustainable development path becomes a must choice in agriculture.In recent years,vegetables-frog-bots of the trinity is rising gradually,a circulation pattern of agricultural production in the northeast in China.It skillfully uses the food chain and ring technology,and uses the pests preyed by frog in vegetable filed.in order to stop using pesticides and fertilizers.at the same time ensure the production of frog,feeding bots as auxiliary materials supplied to frog in the production,and fertilizers,and the bots and frog waste are returned to the field directly as natural organic fertilizers.At harvest,frog and vegetable are producted,farming and breeding combined.In this paper,utilizing the emergy evaluation theory and method analyzes the single vegetable production mode?single frog breeding and the trinity circulation pattern of agricultural production.It turned out that in this experiment the three models of Emergy Yield Ratio are1.07,1.15 and 3.21 respectively.The emergy yield ratio of recycling agriculture is higher than the former two significantly.It explains that the land utilization of recycling agriculture pattern,and the energy utilization have obvious advantages.In these three patterns,the sustainability indexes of the emergy yield ratio are 1.02,13.06,16.05 respectively.It illustrates that the production profit of recycling agriculture pattern is the best in the three,and the protection degree to environment is the highest.The Product Safety Index Based-Emergy are-0.31,0,0 respectively.It explains that recycling agriculture pattern is reliable in the food security.The total input funds of these three patterns are 1562 yuan,5295 yuan and 2593.6 yuan respectively.It shows that model 3 has the highest total funds,model 1 has the lowest.The total output funds of these patterns are 20000 yuan,14450 yuan and 32530 yuan respectively.The net income after removing the cost are 18438 yuan,9155 yuan,and 27936.4 yuan respectively.From the aspect of a single economy,the three-in-one mode has obvious advantages.The above results show that the three-in-one mode has a better economic benefit and ecological benefit.