【作者】 欧阳中万；

【导师】 廖桂平；

【作者基本信息】 湖南农业大学 ， 种植， 2004， 硕士

【摘要】 棉花病虫草害是制约棉花产量和质量提高的重要原因之一。病虫草害控制的关键是科学诊断与防治。研制棉花病虫草害诊治专家系统的目的就在于对棉花生长过程中出现的病虫草害能及时、准确地诊断并制定出有效的预防和防治方案。 本文介绍了基于网络的棉花病虫草害诊断与防治专家系统的整体设计思路，初步总结了湖南棉花病虫害的发生发展规律及综合诊治体系，建立了相应的病虫草害诊治决策模块，并采用“Web浏览器／Web服务器／数据库系统”三层分布式计算体系结构，应用模糊产生式知识表示较好解决了棉花病虫草害诊治领域知识的复杂性问题。针对知识规则的构建是专家系统研制中的关键而最重要的环节，它关系着整个系统决策的准确性、可靠性和实用性这一核心问题，本文重点论述了从知识搜集、数据库设计到知识规则构建的一系列过程。更多还原

【Abstract】 The diseases and insect pests and weeds of cotton have seriously restricted to increase the yield and quality of cotton. The key to control the diseases and insect pests weeds of cotton is to use scientific methods to diagnose, prevent and cure. The aim to develop "the Diagnoses, Prevention and Cure Expert System for Diseases and Insect Pests and Weeds of Cotton" is to timely and exactly diagnose the diseases and insect pests and weeds of cotton during cotton growth and development, and make an effective solution for prevention and cure.This article firstly introduces the general design thought for the Web-based Diagnoses, Prevention and Cure Expert System for Diseases and Insect Pests and Weeds of Cotton. And then it summarily sums up the knowledge and research achievement of the diagnoses, prevention and cure for cotton diseases and insect pests in Hunan province; based on this, establish the decision modules for this expert system. Lastly, the expert system is built to employ "Browser/Web Server/DBMS" three-hierarchy architecture network model, and to adopt fuzzy production rule. It satisfactorily solves the complexity problem in cotton diseases and insect pests.The knowledge rule establishment, which is vital for expert system decision veracity, reliability and practicability, is the most important step in developing expert system based on ES shell. Thus, the process from the knowledge collection, database design to knowledge rule establishment is particularly discussed.更多还原