
An expert system for management of plug seedling was developed, the system have the function for the diagnosis of pests, diseases and the consulting of plug seedling cultivation. According to the symptoms characteristic features described for diseases and pests, the rule base was established based on relational databases. And the rules were expressed based on production rules. Based on the case based reason(CBR), the diagnosis for pests and diseases were realized based on the rules. And the software was development based on WEB, the system support the database both Access and SQL Server.
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