农业生产废弃物循环利用绩效测度的实证研究 ——基于三阶段DEA模型的农户基质化管理

针对农户的农业生产废弃物基质化循环利用行为进行实地调研,利用三阶段DEA模型,剔除外部环境因素和统计噪声的影响,测度农户农业生产废弃物循环利用行为的绩效,并对各决策单元的技术效率进行分解,分析农户循环利用效率较低的主因.结果表明:规模效率较低是导致当前农业生产废弃物循环利用效率较低的主要原因.具体来看,剔除外部环境因素和统计噪声的影响后,农户对农业生产废弃物的循环利用行为的综合效率均值仅为0.4089,存在59.11%的可改进空间,纯技术效率均值高达0.9701,表现良好,规模效率均值仅为0.4215,成为导致农户循环利用行为效率较低的主因.投入量调整前后样本农户农业生产废弃物循环利用绩效存在明显差异,环境变量和随机因素对样本农户的行为绩效具有重要影响.在农业生产废弃物循环利用过程中,环境变量的变化与投入松弛之间存在紧密的关联性.根据上述结论,提出了改善农业生产废弃物循环利用过程的环境变量、适度增加投入要素,以抑制投入变量松弛,提高农户对农业生产废弃物循环利用绩效的对策建议.

Empirical studies of agricultural production waste recycling efficiency-Based on peasant household substrate management with three-stage DEA model.

Based on field research on farmers’ agricultural production waste recycling behavior, the external environment factors and the effect of statistical noise were eliminated, farmers agricultural production waste recycling behavior performance were measured, the technology efficiency of the decision unit was decomposed and the main reason for the low recycling efficiency with three-phase DEA model was analyzed. The results show that: lower scale efficiency was the main reason for the low efficiency of agricultural production waste recycling. More specifically , after eliminating the external environment factors and the effect of statistical noise, the average comprehensive efficiency of agricultural production waste recycling was just 0.4089, with room for 59.11% improvement, the average pure technical efficiency was as high as 0.9701, to perform well, scale efficiency 0.4215 only, which was the main reason for low efficiency of agricultural recycling behavior. Agricultural production waste recycling performance of sample households was different before and after adjustment, environment variables and random factors had important influence on the behavior performance of sample households. In the process of agricultural production waste recycling, there was a close relationship between the change of environment variables and investment relaxation. According to the above conclusions, environment variables of agricultural production waste recycling process should be improved and input elements should be moderately increased, in order to suppress the input variables flabby and improve the efficiency of agricultural production waste recycling.