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利用定点和走访调查法,对山东省苹果害螨的发生和防治现状进行了调查分析,针对实况制定了相应的综合防治措施。
The use of fixed-point and visit survey method, the incidence of apple-type mites in Shandong Province and prevention and treatment of the status quo were investigated and analyzed, in response to the actual situation to develop a comprehensive prevention and control measures.