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进口贸易是国际技术扩散的重要渠道。本文以广东省为例,通过一个扩展的LP模型和协整分析方法研究了省内研发投入和进口贸易对全要素生产率的影响。结果发现,在不考虑人力资本变量时,进口贸易对全要素生产率的提高没有任何贡献;而在考虑到人力资本的动态吸收能力时,进口贸易则对全要素生产率具有正向的促进作用,但其作用随着进口技术系数的提高而缓慢下降。
Import trade is an important channel for international technology diffusion. Taking Guangdong Province as an example, this paper studies the impact of R & D investment and import trade on total factor productivity in the province through an extended LP model and cointegration analysis. The results show that import trade does not contribute to the improvement of TFP without considering the human capital variables. While considering the dynamic absorptive capacity of human capital, the import trade plays a positive role in promoting TFP. However, Its role with the import of technical factors and slow decline.