Citrus Cultivation And Management Expert System For Construction And Implementation

Citrus is import kind of fruit in China. With the steady growth of the planted area and yield in the past years,it has become the pillar industry of the place where people take citrus production as the leading economy in China. With China joining the WTO and the steady rise of people's living standards,there will be an increasing need for more fresh citrus and its converted products.But people's consumption idea changes and the needs of national exports exchange,Citrus industry to the development of information technology road is the inevitable choice.The system is one of the most important platforms to transfer the knowledge and experience of citrus expert and the agricultural high-tech achievements to farmers as well as,the import support to implement the network and intelligentization of citrus production management,it is the effective means to speed up the high-quality, standardization,scalization and industrilization of citrus production,and also the crucial measure to lower production costs and to enhance production profits,with the implement of high technology.It can be used in all phases of citrus production-before citrus sowing,when citrus growing and after citrus harvesting.Thus,it is particularly significant to study and develop the citrus culture and management expert system. The system is base on the PAID expert which is developed by the National University of Defense Technology and the NERCITA together.According to the problems and trends in studying Agricultural Expert System,this paper discusser principles and techniques of developing expert system for crop production, And the actual production of citrus, Development of the citrus cultivation and management expert system. The citrus cultivation and management expert system, application the structure of Web Browser/Web Server/Database.It integrates theories,experiences and updated research fruits of experts,as well as absorbs the related knowledge in ecology,plant protection , sect.And then they are formalized according to knowledge bases are develop representation, some rule are built. By the rules,we built some knowledge bases.The article discusses application structure of database,which closely associates with knowledge base,reasoned and computer-user interface.After designing structures of data tables of foundation data base and then inputting data, we build fact base on Cultivation weather fitness, fact base on Cultivation geographical suitability, fact base on Cultivation soil suitability, fact base on Area Planning, fact base on Stock options,fact base on Planting density,fact base on Soil Management,fact base on Water Management,fact base on Juvenile tree pruning,fact base on Adult tree pruning,fact base on Bagging type, fact base on Bagging period,fact base on Period from bags,fact base on Dystrophy aided diagnosis, fact base on Disease diagnosis, fact base on Pest diagnosis.The intelligent decision-making function of citrus cultivation and management expert system have not only query of citrus general knowledge and information,but also optimal decision-making on the agronomic measures ecological orchard establishing,Area Planning, Stock options,Planting density,Land and water management, Shaping and Pruning Bagging decision-making,Diagnosis and treatment of diseases and insect pests, Dystrophy diagnosis and treatment.The main characteristics of citrus cultivation and management expert system hold not only blocking,encapsulation and inherited attribute,but also ability of self-integration with knowledge and model treatment, logical inference and decision-making ability,high precision, reliability and open,and user-friendly interface and easy operation.