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1997年,草地螟(Loxostegesticticatis)在我国华北及东北地区大发生,造成了巨大的经济损失。笔者采用黑光灯诱测和普查幼虫的方法,调查了1997年草地螟在河北省的发生情况。对调查结果的分析表明:1、草地螟的为害有以下特点,即周期性、蛾量突增突减现象,一代幼虫为害严重而二代为害较轻以及对寄主的选择性等;2、草地螟之所以能够暴发为害,主要是其杂食性、迁飞性和幼虫的二次迁移习性以及适宜的气候条件造成的;另外,受害区群众认识不够,准备不足也是造成重大损失的原因之一。针对以上事实,文章认为加强科技意识教育、严密监测草地螟发生动态、推广黑光灯诱杀成虫技术并辅以药剂防治是有效控制草地螟暴发的基本措施。
In 1997, the grasshopper (Loxostegesticticatis) occurred in north China and northeast China, causing huge economic losses. The author used black light to survey and census of larvae, and investigated the occurrence of Meadow Borer in Hebei Province in 1997. The analysis of the survey results showed that: 1, the damage of meadow moth had the following characteristics, namely, the phenomenon of sudden increase and decrease of moth, the serious damage of the first generation larvae, the lesser second generation damage and the selectivity to the host; Borer is able to outbreak caused mainly by its omnivore, migratory and larvae second migration habits and suitable climatic conditions caused; In addition, the victims of insufficient awareness of the masses, inadequate preparation is also one of the causes of significant losses. In view of the above facts, the article believes that it is a basic measure to effectively control the outbreak of Sesamia inferens by strengthening the education of S & T awareness, closely monitoring the occurrence of Stem Borer, promoting the technology of trapping and killing adults with black light, and controlling with pesticides.