An Expert System To Diagnose And Inquire About Plant Diseases For Paddy Rice Of Jilin Province

Paddy rice is one of the three main food provision crops of Jilin province. In order to enhance the quantity and quality of paddy rice and realize high—yield, high—quality and high—return paddy rice crop , a very important part is to put plant diseases of paddy rice under control well in produce process. Due to numerous plant diseases of paddy rice which are harmful for the crops and sometimes bring devastation to them and the farmers' little knowledge about plant diseases or mixing up the types of the plant diseases sometimes and no a just-in-time and effective treatment programme and no timely services and few experts on paddy rice , the technical staff, when to diagnose , treat and control the plant diseases correctly for the farmers of the paddy rice crops areas ,have met great difficulties.The application and development of agriculture expert system is a key route to accomplish the informationization and modernization of agriculture. On the basic of analysing the application of agriculture expert system and the developmental tempo and considering the agricultural present situation and the characteristics of the plant diseases of Jilin province ,the knowledge of plant diseases has been systematic collatived and studied in depth, and then a system to efficiently combine the computer technology with the principle of the expert system and the plant protection of paddy rice begins, at the same time , the expert system to diagnose and inquire about plant diseases for paddy rice of Jilin province on the basis of network start to be constructed. By sharing konwledges of the relative domains through this system, a few experts on plant protection of paddy rice is not a problem, and the integrated control of the plant diseases of the paddy rice will be improved . What' s more, it' s significant that the transform of the findings of science and technology will speed up.This system considers 12 kinds of plant diseases of paddy rice including rice blast ,etc. as the objects of study .The main points of the study cover the symptoms of the plants which fell ill, prevention and cure, regularity of onset, information of pathogen, photographs. On the assistance of the experts of the relative domains, these knowledges have been analysed carefully and systematic collatived and the knowledge database of this expert system has come into being.In respect of the structure of the expert system, this system is designed and developed on the basis of general structure of expert systems mainly including man-machine interface, inference engine, knowledge base, generalized database, instruction interpretation, knowledge acquisition system, etc. All the knowledge and regulation are stored at relational database to form the knowledge base, which achieved storage, management and shared for the domain knowledge. Under requisitions of users, to utilize the form for knowledge storage and the object oriented technology to complete the inferences effectively and correctly. Turning in the direction of domain experts' knowledges and experiences, knowledge acquisition system can give the functions to the knowledge base include modify, expand, maintain, etc.