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根据昆虫对一定频谱范围的光线有趋性的原理,利用频振式杀虫灯对南方庭园夏季灯下昆虫进行调查。调查共诱到的有害昆虫1831头,天敌58头。在灯下被诱的有害昆虫中,膜翅目昆虫占总虫数的35.7%,主要为蚁类;鳞翅目昆虫占总虫数的29.1%,主要为斜纹夜蛾、稻纵卷叶螟等;同翅目昆虫占总虫数的19.5%,主要为叶蝉、飞虱等;鞘翅目昆虫占总虫数的7.6%,主要为八斑和瓢虫、黑棕金龟等;双翅目昆虫占总虫数的5.5%,主要为灰种蝇、柑桔小实蝇等。此外还有少量半翅目、直翅目和蜚蠊目昆虫。灯下昆虫的活动受天气状况的影响较大,晴好天气昆虫多,有雨天气的昆虫少,但膜翅目昆虫在雨后转晴的天气有突然增多的现象。本次调查捕获的昆虫以害虫居多,天敌较少,说明调查区天敌少是有利于有害昆虫繁衍的主要原因。
According to insects on a certain spectral range of the trend of light has the principle of the use of frequency-vibration pest control lights in the South Garden Summer insect investigation. A total of 1831 harmful insects were induced and 58 were natural enemies. Of the harmful insects lured under the lamp, Hymenoptera accounted for 35.7% of the total number of insects, mainly insects; Lepidoptera insects accounted for 29.1% of the total number of insects, mainly Spodoptera litura, rice leaf roller Etc .; Homoptera insects accounted for 19.5% of the total number of insects, mainly leafhoppers, planthoppers, etc .; Coleoptera insects accounted for 7.6% of the total number of insects, mainly eight spots and ladybugs, black brown tortoise; Diptera Insects accounted for 5.5% of the total number of insects, mainly ash fly, citrus fruit fly and so on. In addition there are a small amount of Hemiptera, Orthoptera and cockroach insects. The activity of the insect under the lamp is greatly affected by the weather conditions. There are many insects in the sunny weather and few rainy weather, but the sudden increase of the Hymenoptera insects in sunny weather after the rain. The majority of insects captured in this survey were mostly pests with fewer natural enemies, indicating that fewer natural enemies in the survey area are the main reasons contributing to the multiplication of harmful insects.