The Construction Of Expert System Of Control On Disease And Pest In Wheat

Based on the exploitative tool-platform PAID2.2 for agriculture expert system, utilizing the principle of knowledge engineering and information technology, systematizing and formalizing the research fruits on the prevention and cure technology in disease and pest in wheat and the field expert's knowledge, experience and the method to resolve problem, and via the combination of model and expert technology, the paper studied the construction of Expert System of control on disease and pest in wheat.The system was explicated by program-language VB. script-language InterDev, Asp, HTML, Web page making tool Dream Weaver and taking SQL Server as database. It's superior to other foregone software lies in:(I) able to run on both stand-alone and network, supporting multi-user visiting;(2) integrating the diagnoses, forecast and prevention and cure and multimedia information management. Relevancy consanguineous and running unaided; (3)the user handling interface adopts fat-witted Windows, menu driving, also providing online help.easily learning and Using.The structure of the system is composed of Data Base, Knowledge Base, and Inference Engine, Interface of User-Computer. Interpreting Mechanism, Knowledge Obtaining and Knowledge Base Maintaining Organization. The function modules of the system include the decision-making of diagnoses, forecast and control on time on the disease and pest in wheat and multimedia information management with system maintenance and help on line. The system realizes functions as following:1) The decision-making of diagnoses Diagnose and identify by symptom and character of the disease and pest. Language description emphasizes popular and easily understood. The conclusion appends the illustration by photograph and hyperlink files61besides character description.2) The decision-making of forecast Include the long-term, middle long-term and short-term forecast about primary disease and pest in wheat for Henan Province. The sort of forecast is disease, pest and the complex of disease and pest.3) The decision-making of control on time Based on control index, date and forecast results, to determine if control and how to control.4) Multimedia information management To provide multimedia information about disease and pest for users with photograph and character description, which could also give assistance for decision-making. In addition, the compositive information offers plentiful knowledge and technology relation to the disease and pest control in wheat.5) System maintenance Extend, update and modify the database, knowledge database and module database by knowledge expert and manager, also involving system program maintenance.6) Help on line Offer detailed help and cue for the operation and using of the system.The exploitation of system faces technicians in province, counties and farmers, to guide the production of wheat, train technicians and provide decision-making support for the disease and pest control in wheat, thus realize high yield, effect and profit and quality of the production of wheat.The system involves 65 kinds of disease and pest. It can be regarded as the considerable comprehensive and systemic system among the correlative system developed by now. The system is on probation at the present time.The system' circulating process and result basically achieve design requirement by case analysis and expert testing, possessing practical application value and foreground, which system is on probation at the present time.