| With the implementation of the innovation-driven development strategy and the transformation of China’s main contradiction,the transformation of China’s economic development mode has undergone tremendous changes.At the same time,the gradual fading of the demographic dividend,rising labor costs,and increasing reduction of resources have an increasingly significant impact on economic development constraints.Maintaining stable economic growth and improving the quality of economic growth have become new themes for China’s future economic development.However,China is changing the way of economic development and adjusting the industrial structure.How to change the level of technology through R&D investment,so as to promote the high-quality development of China’s economy.In fact,China has entered a stage where R&D investment has surged and production growth has slowed down.Rational allocation of R&D investment and adjustment of R&D structure play an important role in ensuring high-quality economic development and promoting the upgrading of industrial structure.This paper compares the growth trend of R&D investment between international organizations and developed countries,so as to judge the trend of R&D investment in China.Based on the theory of endogenous growth,combined with the CGE modeling method,this paper regards R&D investment as the main indicator for measuring technological progress.By introducing R&D investment and intellectual capital into the CGE model,the R&D investment production function is constructed as an analysis of the growth of knowledge capital stock.Based on this,different scenarios of R&D investment change are set to realize the simulation of R&D investment on economic growth.At the same time,an economic growth model is constructed to measure the impact of factor input on economic growth,and the rationalization and advanced indicators of industrial structure are introduced to measure the impact of R&D investment on industrial structure.Through the simulation analysis,the following conclusions are drawn:1)R&D investment has a positive role in promoting economic growth and helps to realize the transfer of China’s labor-intensive industries to capital-intensive or knowledge-intensive industries.Adjusting the R&D structure has a better effect on promoting the economy than increasing R&D investment by 1%.The simulated scenario cannot improve the contribution rate of R&D investment to the economy,which is caused by the increased requirements for new technologies caused by R&D-driven.Among them,adjusting the ratio of R&D investment can increase the contribution rate of R&D in the short term,but in the medium and long term,it will be attenuated due to industrial upgrading and the decline of labor contribution rate.2)R&D investment can improve the technical level of a department.The original growth rate of the total output of each department is positively correlated with the proportion of R&D investment,and the departments with faster growth rates are mostly labor-intensive departments in the primary and secondary industries;The higher the development level,the lower the marginal output of R&D investment in the sector,thus reducing the economic return brought by R&D investment intensity;For sectors with low R&D intensity,such as food processing industry,papermaking,printing,culture,education and sports,textile and leather manufacturing,increasing R&D investment in this sector has a more obvious effect on promoting economic growth.3)During the simulation period,due to the industry’s inability to deal with the relationship between technological progress caused by R&D activities and the rational allocation of labor force in time,the process of rationalization and upgrading of industrial structure has been negatively affected,but adjusting the R&D structure scenario has a significant effect on promoting the rational development of industrial structure.Therefore,a reasonable R&D investment plan plays an important role in accelerating the transformation of economic development mode. |
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