Prescription Map Generation Intelligent System of Precision Agriculture Based on Knowledge Model and WebGIS
Zhenkun Tian · Zhongguo nongye Kexue · 2007
【Objective】According to the result of soil sampling and test, a map of soil properties can be achieved by interpolation. After that, a prescription map can be generated to conduct variable-rate fertilization. This process is the core of precision agriculture. It can not only save fertilizer, but also improve economic and environment benefits. 【Method】The system which was based on geography information system (GIS)could: 1) interpolate soil properties map by Kriging method; 2) integrate yield, meteorological data and soil data into a database; 3) couple GIS with knowledge model, such as crop potential productivity and balanced fertilization model; 【Result】 4)generate prescription map and transmit by web. 【Conclusion】The study constructed the basic frame and process flow of prescription map based on knowledge model and webGIS, improved the rationality and reliability of prescription map, implemented to generate and release a prescription by Web, and make it easy for user to get a prescription map.