College of Economics & Management, Huazhong Agricultural University, Wuhan, Hubei, 430070, PR China; International Joint Laboratory of Climate Change Response and Sustainable Agriculture, Wuhan, Hubei, 430070, PR China.
J Environ Manage. 2021 Sep 1;293:112837. doi: 10.1016/j.jenvman.2021.112837. Epub 2021 Jun 5.
The effects of agricultural green production technologies (AGPTs) on agricultural productivity and the environment have received increasing attention. With the panel data of agricultural production of mainland China from 2000 to 2017, this study investigates the role of AGPTs adoption rates in improving low-carbon efficiency by adopting a random-effects panel Tobit model. Results indicate that average adoption rates of AGPTs are less than 20% and unbalanced adoptions vary between the main and non-main grain-producing areas, as well as the northern and southern main grain-producing areas. Furthermore, AGPTs adoption reduces low-carbon efficiency at nationwide and main grain-producing areas. In the northern main grain-producing areas, water-saving irrigation and no-tillage seeding reduce low-carbon efficiency, while mechanized returning straw crushing promotes it. In the southern main grain-producing areas, deep tillage with fertilizer application and no-tillage seeding decrease low-carbon efficiency, while mechanized deep ploughing and scarification increases it. We also find that AGPTs can promote low-carbon efficiency through comprehensive mechanization level and mechanical input density. To improve low-carbon efficiency, we suggest that the improvement and diffusion of applicable AGPTs should be adapted to the local production conditions, and the agricultural machinery service, research and development system should be improved as well.
农业绿色生产技术（AGPTs）对农业生产力和环境的影响受到了越来越多的关注。本研究利用中国 2000-2017 年农业生产的面板数据，采用随机效应面板 Tobit 模型，考察了 AGPTs 采用率在提高低碳效率方面的作用。结果表明，AGPTs 的平均采用率低于 20%，且主要和非主要粮食产区以及北方和南方主要粮食产区之间的采用率不平衡。此外，AGPTs 的采用降低了全国和主要粮食产区的低碳效率。在北方主要粮食产区，节水灌溉和免耕播种降低了低碳效率，而机械化秸秆还田则提高了低碳效率。在南方主要粮食产区，深施化肥和免耕播种降低了低碳效率，而机械化深耕和耙地则提高了低碳效率。我们还发现，AGPTs 可以通过综合机械化水平和机械投入密度来促进低碳效率。为了提高低碳效率，我们建议应根据当地生产条件改进和推广适用的 AGPTs，并完善农业机械服务、研发体系。
