| 摘要: |
| 为探究不同种养结合模式能否提升肉羊养殖环境技术效率，本研究基于超效率SBM模型测算了肉羊养殖环境技术效率，并基于多元处理效应模型探究了不同种养结合模式对肉羊养殖环境技术效率的影响及影响机制，结果表明：1）种养结合能够提高肉羊养殖环境技术效率，且内循环种养结合模式对肉羊养殖环境技术效率提升作用强于外循环种养结合模式；2）内循环种养结合模式通过降低饲草料费用、降低劳动力投入、减少面源污染及碳排放来提升肉羊养殖环境技术效率，而外循环种养结合模式主要通过降低面源污染和增加肉羊出栏活重来提升肉羊养殖环境技术效率；3）内循环种养结合模式更有利于提高小规模肉羊养殖环境技术效率，而外循环种养结合模式仅对大规模肉羊养殖环境技术效率有提升作用。 |
| 关键词: 种养结合模式 肉羊养殖 环境技术效率 多元处理效应模型 面源污染 |
| DOI：10.11841/j.issn.1007-4333.2024.03.22 |
| 投稿时间：2023-05-16 |
| 基金项目:农业农村部和财政部项目（CARS-39-22） |
|
| Can the combination of planting and breeding improve the environmental technical efficiency of mutton sheep breeding?MTE model analysis based on different combination modes of planting and breeding |
|
WANG Ruyu1,2, XIAO Haifeng1*
|
| (1.College of Economics and Management, China Agricultural University, Beijing 100083, China;2.Institute of Rural Economics and Regionalization, Tianjin Academy of Agricultural Sciences, Tianjin 300192, China) |
| Abstract: |
| In order to explore whether different modes of combination of planting and breeding can improve environmental technical efficiency of mutton sheep breeding， the environmental technical efficiency of mutton sheep breeding was measured based on Super-SBM model in this study. The influence of different combination modes of planting and breeding on the environmental technical efficiency of mutton sheep breeding and its influence path were monitored based on multiple treatment effect model （MTE model）. The results show that： 1） The combination of planting and breeding can improve the environmental technical efficiency of mutton sheep breeding. The internal cycle combination of planting and breeding mode has a stronger improvement effect on the environmental technical efficiency of mutton sheep breeding than the external cycle combination of planting and breeding mode； 2） The internal circulation model improves the environmental technical efficiency of mutton sheep breeding by improving the technical efficiency of breeding and reducing non-point source pollution and C emissions， while the external circulation model mainly improves the environmental technical efficiency of mutton sheep breeding by reducing non-point source pollution； 3） The internal circulation model is more conducive to improving the environmental technical efficiency of small-scale mutton sheep breeding， while the external circulation model only improves the environmental technical efficiency of large-scale mutton sheep breeding. |
| Key words: the combination of cultivation with breeding sheep breeding environmental technical efficiency MTE model non-point source pollution |
