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一、2003年全省森林病虫鼠害发生情况 2003年是我省森林病虫鼠害发生比较严重的一年,据统计,全省主要森林病虫鼠害发生面积576.8万亩,其中森林害虫515.7万亩,病害55.7万亩,鼠害5.3万亩。比上年增长47.8万亩,同比上升9%。二、2003年全省森林病虫鼠害的发生特点一是常发性食叶害虫总体上升,呈多点爆发、局部成灾态势。由于去年暖冬和春冬降雨较多,越冬虫口基数和成活率高,春尺蠖、舟蛾类、潜叶蛾等杨树食叶害虫,在我省普遍发生,发生面积135.57万亩,与2002年相比,上升132.41%。松毛虫处于周期性发生高峰期,承德、秦皇岛、保定等市有局部成灾现象,发生面积共计130万亩。
First, the occurrence of forest pests and rodents in the province in 2003 2003 is a serious year for forest pests and rodents in our province. According to statistics, the area of major pests, diseases and rodents in the province is 5.768 million mu, of which forest pests 5,157,000 mu, 557,000 mu of diseases and 53,000 mu of rodent pests. 478,000 mu more than the previous year, an increase of 9% over the same period of last year. Second, the occurrence of pests and diseases in forest pests in the province in 2003 First, the general rise of leaf-eating pests, was a multi-point outbreak of local disaster situation. Due to more rainfall in the warm winter and winter last year, the number of wintering insect population and the survival rate were high. Populus euphratica, boat moth, and leaf miner were common in our province with an area of 135.57 mu and 2002 Compared with an increase of 132.41%. Dendrolimus in the cyclical peak, Chengde, Qinhuangdao, Baoding and other cities have been part of the disaster, the occurrence of a total area of 1.3 million mu.