Abstract: The steady improvement of green total factor productivity is an important way to realize the high-quality development of grain industry. This paper empirically tests the green innovation driving mechanism for high-quality development of grain industry by using GML index method, panel fixed effect model and conditional quantile model. The findings show that the green total factor productivity of grain decreased by 0.3% annually from 1999 to 2018; and the gap between regions is obvious: it is higher in the eastern region than that in the central and western regions. There are significant spatial heterogeneity and phased differences in the driving mechanism of grain green total factor productivity. However, in general, human capital has a positive driving effect on the progress of green technology and the improvement of green technology efficiency, while other factors have a negative driving effect on them. The negative driving factors mainly come from four aspects: deterioration of factor quality, distortion of resource allocation, failure of industrial policy and low-end locking of technology. Therefore, accelerating the upgrading of factor quality, optimizing the resource allocation structure, improving the industrial policy system and improving the ability of scientific and technological innovation will help to activate the innovation power for high-quality development of grain industry.

Key words: grain industry, high-quality development, green innovation, driving mechanism, green total factor productivity