基于SBM-GML模型的数字经济赋能制造业新质生产力发展研究

Research on the Development of New Quality Productivity of Manufacturing Enabled by Digital Economy Based on SBM-GML Model

制造业新质生产力的形成对我国经济高质量发展具有重要的现实意义。而数字经济作为新一轮科技革命和产业变革的重要引擎,能加速制造业新质生产力的发展。本文基于2011—2019年263个地级以上城市面板数据,运用SBM-GML模型测度制造业新质生产力发展水平,实证检验数字经济发展对制造业新质生产力发展水平的影响。研究结论显示:(1)数字经济能显著促进制造业新质生产力的发展;(2)数字经济能通过空间溢出效应显著促进邻近地区制造业新质生产力的发展;(3)异质性分析表明,数字经济对制造业新质生产力发展的促进作用在非资源型城市、中心城市和大数据试验区试点城市的作用更显著;(4)调节效应分析表明,金融发展水平对制造业新质生产力的调节效应显著为负,城市创新能力对制造业新质生产力的调节效应显著为正。因此,我国应加快推动制造业新质生产力的发展,优化数字经济与实体经济的融合过程,实施差异化的制造业发展政策,全面提升城市创新能力。

The formation of new quality productive forces in manufacturing industry has important practical significance for the high-quality development of China’s economy.As an important engine of a new round of scientific and technological revolution and industrial transformation,digital economy can accelerate the development of new quality productivity in manufacturing industry.Based on the panel data of 263 prefecture-level cities from 2011 to 2019,this paper uses SBM-GML model to measure the development level of new quality productivity in manufacturing industry,and empirically tests the impact of digital economy development on the development level of new quality productivity in manufacturing industry.The results show that:(1)Digital economy can significantly promote the development of new quality productivity in manufacturing industry;(2)Digital economy can significantly promote the development of new quality productivity of manufacturing industry in adjacent areas through spatial spillover effect;(3)Heterogeneity analysis shows that the role of digital economy in promoting the development of new quality productivity in manufacturing industry is more significant in non-resource-based cities,central cities and pilot cities in big data pilot areas;(4)The analysis of moderating effect shows that the moderating effect of financial development level on the new quality productivity of manufacturing industry is significantly negative,while the moderating effect of urban innovation capacity on the new quality productivity of manufacturing industry is significantly positive.Therefore,we should accelerate the development of new quality productivity in manufacturing industry,build a unified factor market,and implement differentiated manufacturing industry development policies according to local conditions.