中间品贸易自由化如何影响企业研发投入：来自我国微观企业层面的证据

杨晶晶; 胡佳刚; 周定根

中间品贸易自由化如何影响企业研发投入：来自我国微观企业层面的证据

引用本文：杨晶晶，胡佳刚，周定根.中间品贸易自由化如何影响企业研发投入：来自我国微观企业层面的证据[J].湖南大学学报社会科学版,2018,(4):71-78

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作者	单位
杨晶晶，胡佳刚，周定根	（湖南大学经济与贸易学院，湖南长沙 410079）

中文摘要:为探究中间品贸易自由化对企业研发投入产生的影响，我们利用关税数据、2000-2006年的规模以上的工业企业数据、中国海关产品层面的贸易数据共三套数据，将其合并后，先后采用基准固定效应、倾向得分匹配法和双重差分倾向得分匹配法进行检验，得到一致估计结果：中间品贸易自由化的不断推进有效地促进了企业研发投入。随后，我们利用逐步检验法估计中介效应，探讨了中间品贸易自由化影响企业研发投入的机制路径，结果表明中间品贸易自由化可以通过侵蚀企业利润、提高企业出口规模和加剧市场竞争间接促使企业提高研发投入，带动产业转型升级。本文的结果可以为中国当前的贸易自由化政策提供参考依据。

中文关键词:中间品贸易自由化研发投入 WTO 倾向得分匹配+双重差分中介效应

How Trade Liberalization of Intermediate Goods Affects Corporate R&D Investment:Evidence from China's Micro-enterprise Level

Abstract:This paper mainly explores the impact of the free trade of intermediate goods on R&D investment.Based on tariff data,2000-2006 China’s industrial enterprises and the customs data,we used Fixed effect model,PSM and PSM+DID to verify the hypothesis.The results show that trade liberalization of intermediate goods continues to promote enterprise R&D investment effectively. Subsequently, we estimate the mediating effect by step-by-step tess and explore the mechanism of trade liberalization of intermediate goods affecting corporate R&D investment. The results show that trade liberalization of intermediate goods promotes R&D by eroding corporate profits,increasing the scale of corporate exports, and intensifying market competition,driving industrial transformation and upgrading.The results of this paper can provide a reference for China's current trade liberalization policy.

keywords:trade liberalization of intermediate goods enterprise R&D;WTO PSM+DID intermediation effect

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