3S-Based Farmland Information Support System at County Level

In china, with the development of GPS, GIS, RS, 3S technology is gradually used in the agriculture in recent years. This paper introduced the concepts of GPS, GIS, RS. Considering the fact of the Chinese agriculture, we developed the farmland information support system based on the integration of GPS, GIS, RS. With the application of this system in some counties of Yunnan province, the work mode of the department of the agriculture has started to be changed.