TECHNOLOGY AND THEORIES OF SITE-SPECIFIC FERTILIZATION AND ITS PROSPECT SUPPORTED BY GIS, RS AND GPS
Shibo Fang · Journal of Chengdu University of Technology · 2003
This paper discusses the concept and the necessity of the site-specific fertilization on the (background) of precision agriculture and on the basis of analyzing the relationships of soil, crop and crop (nutrition). It introduces theories and key point technology of information (mainly in RS, GIS and GPS), biology, mechanism engineering and chemical engineering which support the technology of site-specific (fertilization). It also introduces the detail of how to use the technology of remote sensing to get the data of soil fertility and get the information of crop nutrition. It explicates the progress and deficiency of how to use the GPS to get hold of positional information and control the automatons' action of fertilization. The decision-making of site-specific fertilization supported by GIS is also introduced in detail. The progress and deficiencies of current technology in site-specific fertilization are discussed and developed. Under the (conditions) of China, it is helpful to investigate into the development of site-specific fertilization.