Research on model of agricultural technology extension under the cooperation of province，city and county—Taking the project of national major agricultural technology extension by Guangdong Academy of Agricultural Sciences as an example

Agricultural extension is the bridge and link of agricultural scientific and technological achievements into practical productive forces，is an important carrier of developing agriculture through science and technology. Guangdong Academy of Agricultural Sciences and other research institutes undertook agricultuial science and technology extension and service grants project of central. In the process of project implementation，we innovated extension model，provided high-quality technology service for different agro-businesses，explored to establish a new pattern of agricultural technology extension of“scientific research test base + regional demonstration base + grassroots unit agricultural technology extension station + peasant household”，increased improving agricultural science and technology level in competitive industry area，and increased improving production level，the level of economic benefits，create brand and expanded the market。The paper analysed the working mechanisms and distinguishing feature of the model of agricultural technology extension under province，city and county，compared it with other model of agricultural technology extension，expatiated its implement effect，summarized its distinguishing features and experience，in order to provide references for the work of agro-technical extension.