Study And Practise On Information System Of Agricultural Machinery Extension Based On Web

Public communication is an important method for agricultural machinery extension. Network transmission characterizes in fruitful information, shortcut and nicety of transmission, various forms, and broad aspects of coverage and realizing mutual communication and so on, which can transmit the information of agricultural machinery extension to users efficiently and quickly. Establishing information system of agricultural machinery extension basing on Web has an important effect in promoting agricultural machinery extension.In this thesis, author analysis the character and main technology of the information system for agricultural machinery extension rely on the mature technology of network search and database; combine with the basic theory and method of agricultural machinery extension.The information system of agricultural machinery extension includes different function modules, such as digital information collection, digital information organization, digital information service and digital information publication. Four databases have designed in the system including agricultural machinery products, agricultural machinery experts, agricultural machinery enterprises and trial demonstration in agricultural machinery. Some data have collected in each database.In this system, author empolders the metadata template for each database, designs searches strategy of system, sets up relative relationships among database via the signs of data information resource and realizes one-station-style service among database. That is, whatever database you register, according to mutual relationship among data, relative data information will be found from every database.