Abstract
The cartographic system based on a personal computer utilizing the data of soil diagnosis was developed to carry out the investigation of the drainage measure plan of the group upland field of wheat converted from paddy field on the spot. 1) The data of soil survey was formed into a data file by adapting a soil diagnostic system while a field management system was used to form the data of the growth/yield state of crops into a data file. 2) In order to register the position of the upland field subjected to soil diagnosis, a large-scale topographical map of 1/10,000 or more was inputted using an image scanner to prepare an image file. All of these data were automatically classified into topographical maps on a display and the totalization of area was possible. 3) In preparing drainage measure standards in drained paddy field for upland crop cultivation, quantification I analysis was adapted for the purpose of clarifying the relation between the yield of wheat, soil and an upland field condition to extract factor items. As a result, the drainage of upland field, the soil texture of the second horizon and the presence of grey horizon proved to be largely involved and standards of four ranks were set using these data to prepare a drainage measure chart. 4) This system can be utilized with the materials for preparing regional cropping plan for the management of upland field at every parcel of land and for a group drainage measure in drained paddy field for upland crop cultivation or the like due to soil diagnosis in a section or group unit of municipalities.
