意思決定支援システムの開発とその適用によるカンキツ生産作業体系選択過程の分析

Abstract

In order to make a guideline for selecting an appropriate operation system for citrus production in sloping orchards, the decision support system, which was based on the Analytic Hierarchy Process method, was developed by using the Visual Smalltalk. The process of decision making by using the support system was shown.The three types of production systems, which are a facility type, a riding machinery type and a walking machinery type, were analyzed. The facility type is composed mostly of sprinkler pipelines and monorail transport lines. The riding machinery type is constituted mainly of a speed sprayer and a light truck. The walking machinery type is composed of an air-blast sprayer and a crawler type transporter in the main. The hierarchical structure concerned with decision making process was constructed, and then the following results were obtained through the survey on orchard managers by using the decision support system.1) To select the appropriate one from the three production systems, the connection roads to orchards and the gradients of fields should be considered.2) The works of chemical application and transportation are especially demanded to rationalize.3) Managers having comparatively a large household scale in gentle sloping areas select the riding machinery type. The facility type is selected by managers having comparatively a large household scale in steep sloping areas and having the demand financial supports. Managers having a smaller household scale in steep sloping areas select the walking machinery type.