The Centre for Agricultural and Forestry Extension offices of the Yên Bái province takes care of agricultural and forestry extension work in more than 1,000 villages in 180 communes and precincts in the province. For this purpose a strong agricultural extension system from the provincial to grassroots levels has been established. The dissemination work carried out by the Extension Offices have involved: knowledge transfer of technological advances; shifting in the structure of plants, animals and crops; intensive farming of hybrid rice strains; changing one-crop rice fields to two-crop ones; cultivation on sloping soil; raising high-quality chickens and so forth.