“…More than a decade, we in the process of implementation of precision agriculture in the national "863" project, due to the use of computers, networks, 3S technology has accumulated a large number of spatial data, these spatial data space, timeliness, multi-dimensional, the characteristics of the mass, complexity and uncertainty [5]. In order to efficiently use existing resources in agriculture to achieve the production target optimization run, you must find out the land within the soil properties and productivity of spatial variability of circumstances, and to conduct a comprehensive analysis of these results and the correct evaluation of [6,7].…”