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In recent years, the occurrence of rice Chilo suppressalis (Walker) in Longyou County of Zhejiang Province has increased year by year and has become aggravated. This poses a great threat to the safety of rice production. In order to curb the recurrence momentum of rice C. suppressalis, according to the dynamic monitoring and field system survey of rice C. suppressalis in Longyou County since 2015, the causes of the annual increase of rice C. suppressalis in recent years were analyzed, and the recurrence area of C. suppressalis was introduced, and finally some prevention and control measures were put forward.


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