American agricultural cooperation popularization movement is important complement for Donation Land College System, which is called as "forerunner of rural further education".

Based on the analysis of the cooperative extension system in the United States,a university-supported agricultural extension model was discussed,jointly with probe into the rural development approach of Hebei Agricultural University and the model of expert yard adopted by the Northwest A&F University in Baoji Prefecture of Shaanxi province.

Development Tendency of Agricultural Extension and Theoretical System of Extension Science;

Review of institutional innovation in agricultural extension investment in China;

The current situation and thinking of countermeasures to HeiLongJiang province agricultural extension;