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近些年来,大灰象(虫甲)(又名大灰象鼻虫,俗名放羊佬)在我县枣树上危害日趋严重,发生量大时击树震落后每平方米地面内有成虫100多头。该虫食性杂(能食多种植物),发生期长(在我县4—9月份均能见到成虫),且鞘翅坚厚农药不易渗透,给防治造成很大困难。但因其鞘翅不能张开飞翔,又为我们防治提供了方便。1986年,我县采用树干涂胶的方法,取得了很好的防治效果。
In recent years, the great gray elephant (pest) (also known as the big gray weevil, common name of the lambher) jujube in our county on the increasingly serious harm, the occurrence of a large number of trees knocked down after earthquakes per square meter of adult 100 long. The worm diet (can eat a variety of plants), the occurrence of a long period (in our county from April to September can see adults), and coleoptile insecticide hard to penetrate, to prevent great difficulties. However, because of its coleoptile can not fly, but also for our control provides a convenient. In 1986, the county adopted the trunk gum method, and achieved good control effect.