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一、前言水稻病虫害发生种类多,以往水稻病虫害发生程度过去都是先单一地对病虫害进行统计分析,然后根据几种主要病虫害的发生程度来确定一年病虫害的发生程度,而后一项工作往
I. Introduction There are many kinds of rice pests and diseases. In the past, the incidence of rice pests and diseases in the past were all singly analyzed for pests and diseases. Then, the degree of occurrence of pests was determined according to the occurrence of several major pests and diseases.