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产业内贸易主要通过技术进步来促进生产率水平的提高,其次通过规模效率,但是对技术效率的改善没有显著影响,水平产业内贸易和垂直产业内贸易对生产率的影响途径不同,前者通过促进技术效率、后者通过技术进步来促进生产率水平的提高,水平产业内贸易对技术进步表现出显著的负面影响,这与产品的“水平异质虚幻”有关。总体上,产业内贸易显著促进了生产率水平的提高,且水平产业内贸易比垂直产业内贸易对生产率的影响更大。
Intra-industry trade promotes the improvement of productivity through technological progress, secondly through economies of scale, but has no significant effect on the improvement of technical efficiency. The intra-horizontal trade and vertical intra-industry trade have different ways of influencing productivity, , The latter promoted the improvement of productivity through technological progress and the horizontal intra-industry trade showed a significant negative impact on technological progress, which was related to the “heterogeneous level of product”. In general, intra-industry trade has significantly contributed to the improvement of productivity, and horizontal intra-industry trade has a greater impact on productivity than vertical intra-industry trade.