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本文采用DID模型、分位数DID模型、面板回归模型和分位数回归模型等计量研究方法,通过中国工业企业数据库、WTO关税数据库、海关贸易数据库等数据,实证研究了对外开放对我国工业行业层面生产率水平的影响。首先,贸易开放能够显著提升我国工业行业生产率水平,而且相比生产率较低的行业,贸易开放更能显著促进生产率较高行业生产率水平的提升;其次,对外出口显著提升了中国工业行业生产率,而且相比高生产率的行业,对外出口对中低生产率行业生产率水平的促进作用更大;最后,进口竞争对我国工业行业生产率水平具有显著的负面影响,尤其对中高效率行业生产率水平的负面影响更大。
In this paper, using DID model, quantile DID model, panel regression model and quantile regression model and other quantitative research methods, through the data of China’s industrial enterprises database, WTO tariff database, customs trade database, empirical study of the opening up of China’s industrial sector The impact of the level of productivity. First of all, trade liberalization can significantly improve the productivity of China’s industrial sector. Moreover, the opening up of trade can significantly promote the productivity growth of industries with higher productivity than the less-productive industries. Secondly, the export of foreign products has significantly enhanced the productivity of China’s industrial sector. Moreover, Compared with high-productivity industries, foreign exports have a greater positive effect on the productivity of low- and middle-productivity industries. Finally, the import competition has a significant negative impact on the productivity of China’s industrial sectors. In particular, the negative impact on the productivity of middle- .