The Establishment Of Non-nuisance China Citrus Production In Hunan Expert System

China citrus is a very important kind of fruit in Hunan Province. 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 China citrus production as the leading economy in Hunan province. With China joining the WTO and the steady rise of people's living standards, there will be an increasing need for more fresh China citrus and its converted products. But, people's consumption idea changes, people will attach more and more importance to the safety of food, the bad quality China citrus and polluted China citrus will sooner or later be washed out.Therefore, it will become the first choice of industrialization development of China citrus to produce non-nuisance China citrus.Non-nuisance China citrus Expert System(NCCES) is one of the most important platforms to transfer the knowledge and experience of China citrus experts and the agricultural high-tech achievements to fanners as well as, the important support to implement the network and intelligentization of China citrus production management, it is the effective means to speed up the high-quality, standardization, scalization and industrialization of China citrus production, and also the crucial measure to lower production costs and agriculture enviroment pollution and to enhance production profits, with the implement of high technology.Thus,it's particularly significant to study and develop the NCCES.The system is based on the PAID expert system which is developed by the National University of Defense Technology and the NERCITA together.It gives a brief introduction to several prospects of the platform, including workflow,system architecture,knowledge representation and reasoning mechanism.The article systematically summarizes the theoretical knowledge, technology system experience and research achievement of famous professors in the China citrus field, as well as absorbs the related knowledge in ecology, plant protection, soil and fertilizer.And then they are formalized according to knowledge representation, some rules are built.By the rules , some knowledge bases are developed,including the knowledge base on ecological orchard establishing decision-making, the knowledge base on variety choice decision-making, the knowledge base nursery-stoct growing and transplant decision-making, the knowledge base on soil-fertilizer-water management decision-making,the knowledge base on plastic and prunning decision-making and the...