DESIGN OF DECISION-MAKING SYSTEM ABOUT WHEAT SURVEY AND DIRECTIONS FOR SOIL BASED ON GIS IN COUNTY

摘要

With consideration of the decentralization of wheat fertilization management and status in quo in Henan province, the paper mainly designed county wheat decision-making System of survey and directions for soil Based on GIS. By collecting 3773 records of survey and directions for soil in 976 vilages, Hua county, protracting all kinds of vectorgraphs about villages, towns and the soil survey points, and using nutrient balance and model of survey and directions for soil and wheat fertilization directions, the paper had analysed and designed the system of survey and directions for soil and wheat fertilization directions integrating OOP, software component technique, GIS and so on, realized query for information of soil survey points and estimation for soil nutrient distribution and decision-making for wheat fertilization directions, and provided technology support for application of crop survey and directions for soil in Henan province.