Abstract: [Objective] To objectively and accurately evaluate the impact of demonstration certification on the mechanization level of grain and oil cooperatives and explore its path of action, which has important theoretical and practical significance for improving the mechanization level of grain and oil cooperatives, promoting agricultural modernization, and ensuring national food security. [Method] Based on the survey data of 120 grain and oil cooperatives in 10 counties (cities, districts) in Sichuan Province, the research team used OLS model and mediating effect model to explore the impact mechanism of demonstration certification on the mechanization level of grain and oil cooperatives and the mediating effect of policy guidance, verified the regression results of the impact of demonstration certification and policy guidance on the mechanised agriculture level of grain and oil cooperatives, and tested the mediating effect of policy guidance. And conduct heterogeneity analysis based on risk preference and agricultural green demonstration bases. [Result] 1) The mechanization level of grain and oil cooperatives is generally low, but the mechanization level of demonstration cooperatives is significantly higher than that of non demonstration cooperatives. 2) The demonstration certification has a more significant promoting effect on the medium risk preference and the mechanization level of grain and oil cooperatives with green demonstration bases. 3) Policy guidance is an important mechanism for demonstration certification to affect the mechanization level of grain and oil cooperatives, of which the intermediary effect accounts for 37.5% of the total effect. [Conclusion] Demonstration certification has a significant positive impact on the mechanization level of grain and oil cooperatives, in which policy guidance plays a part of the mediating effect. By strengthening the evaluation of demonstration cooperative construction, optimizing the direction of policy subsidies, and focusing on improving the mechanization level of cooperatives in hilly and mountainous areas, we can further promote agricultural and rural modernization and assist in rural revitalization.
Keywords: demonstration certification; grain and oil cooperatives; agricultural mechanization; policy guidance; mediating effect