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对近30年稻飞虱发生历史资料、水稻栽培制度及气候条件等的分析表明,2005年褐飞虱发生为害特点是灯下初见期早、峰次多、虫量大;田间中、后期种群上升快,虫口居高不下;世代重叠严重,不同田块间虫量差异大;发生面积大,为害时间早、程度重。气候条件有利其迁入和对吡虫啉类药剂产生抗性是引起褐飞虱暴发的关键性因素,而4类水稻混栽、水稻品种优质化和施药技术较差对其暴发也产生一定影响。
The analysis of historical data of rice planthopper occurrence, rice cultivation system and climatic conditions in the past 30 years showed that the brown planthopper was characterized by early onset of light, large number of peaks and large amount of insects in 2005; Fast, high population insects; generation overlap serious, large differences in the amount of field plots; large area, damage time early, heavy degree. Climatic conditions favorable for their migration and resistance to imidacloprid are the key factors that cause the outbreak of BPH. Four types of rice, such as mixed planting, high quality of rice varieties and poor application techniques, also have an impact on their outbreaks.