Abstract: Based on the investigation on 373 governors in the department of agricultural products quality safety with five provinces and 12 counties, an empirical analysis on the impact of government control factors on technology diffusion result in the process of agricultural products quality safety technology diffusion is conducted by using ordered Probit model. The black box region involving government control activity in the process of technology diffusion is attempted to clarify. Result shows that government control factors exert the remarkable influence on agricultural products quality safety technology diffusion in the several stages of its development. The factors exert the most prominent impact in the breakthrough and following stages and a comparatively weaker impact in the later period. The variables involving manager attitude and participation exert a prominent impact on control effect. From the aspect of the specific management instrument, production demonstration exerts a prominent impact on the key process of technology diffusion. The regional characters play an important role from the aspect of the external environment. As the framework management behavior of government control, the perfection of management system and the adaptability of technology system exert a prominent affect.

Key words: agricultural product quality safety, technology diffusion, government management, key process