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每年进入7月份以后,露天和棚室中的夜蛾类害虫发生最为严重。夜蛾类害虫为害范围广泛,从玉米到棉花、豆类以及多种蔬菜作物,都是其为害对象。夜蛾类幼虫由于体型较大,多数具有暴食习性。当前又将进入夜蛾类害虫暴发的时节,提醒菜农根据虫害发生特点进行综合防治。北方地区为害较为严重的夜蛾类害虫主要有斜纹夜蛾、甜菜夜蛾和甘蓝夜蛾,尤其是斜纹夜蛾,近几年在山东地区猖獗发生,菜农对此束手无策,在此重点介绍一下这几种害虫的为害习性和综合防治措施。
Each year into July after the open-pit and greenhouse the most serious occurrence of vermin moths. Spider mite pest damage range, from corn to cotton, beans and a variety of vegetable crops, are its targets. Larvae larvae due to the larger size, most have binge eating habits. At present, it will enter the season of the outbreak of vermin moth pests and remind vegetable farmers to conduct comprehensive prevention and control based on the pest occurrence characteristics. In northern China, the most serious pest insects include Spodoptera litura, Spodoptera exigua and Cabbage lutemus, especially Spodoptera litura, which have been rampant in Shandong in recent years. The vegetable farmers are at a loss what to do about this. Harmfulness of Several Pests and Integrated Control Measures.