基于家畜单位环境承载力的农牧结合优化模型研究

Research on the Optimal Model of Crop and Livestock Industry Integration System Based on Environmental Carrying Capacity with Livestock Unit

通过分析种养子系统间废弃物利用的养分循环过程,确定作物秸秆到畜禽养殖和畜禽粪便到农田施用过程中对应的不同作物基于家畜单位的环境承载力,将其作为生态效益的量化指标与经济效益指标相结合,构建多目标农牧结合优化模型,并增加生态平衡约束,采用理想点法求解。结果表明,该模型能较好地耦合农牧系统,在经济效益最大化的同时,实现了废弃物资源利用的最大化和环境影响的最小化。

In this paper,firstly an environmental carrying capacity standard of crops based on livestock unit was established by nutrient cycle process analysis,which was conducted on crop straws as roughage and livestock manure as fertilizer respectively.Then it was used as ecological benefit quantitative index and combined with benefit index to design the multi-objective optimal model of crop and livestock integration system.Finally the ideal point method was used to find the solution,the result had shown that this model had coupled the cropping and farming industry well,achieved the best benefit,meanwhile maximized the utilization of waste and minimized the pollution of environment.