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本文在异质性企业分析框架下,构建了贸易自由化下中间品进口与企业技术选择的理论模型,分析了中间品贸易自由化对企业技术选择的影响机理,并利用2000—2006年中国制造业企业数据考察了中间品贸易自由化对中国制造业企业技术选择的影响。实证结果表明,入世后,中间品贸易自由化显著促进了中国制造业出口企业应用高技术。进一步考虑企业生产率差异性时,发现这种促进作用与企业的初始生产率水平有关,仅仅显著促进中等生产率的企业进行技术升级。另外,中间品贸易自由化对技术密集型出口企业技术升级的促进作用最强,对劳动密集型出口企业技术选择的影响最弱。
Under the framework of heterogeneous enterprise analysis, this paper constructs a theoretical model of the import of intermediate goods under trade liberalization and the technological choices of enterprises, analyzes the mechanism of the trade liberalization of intermediary products on the technological choices of enterprises, and makes use of the Chinese manufacturing methods from 2000 to 2006 Industry data examines the impact of the trade liberalization of intermediates on the technological choices of Chinese manufacturing firms. Empirical results show that after WTO accession, the liberalization of trade in intermediary products has significantly promoted the application of high technology by Chinese manufacturing export enterprises. When further considering the differences in corporate productivity, we found that such promotion is related to the initial productivity of enterprises and only significantly promotes the technological upgrading of enterprises with medium productivity. In addition, the liberalization of trade in intermediate products has the strongest effect on technology upgrading of technology-intensive exporters and the weakest impact on the technical choices of labor-intensive exporters.