论文部分内容阅读
要抓好以下3个技术关键:一是要掌握防治时机。越冬幼虫出蛰盛期,转叶化蛹前防治,是控制和压低全年虫口密度的有效措施。各代卵孵化盛期、幼虫尚未卷叶时,药杀初孵幼虫的效果很好。成虫羽化盛期喷药,药杀成虫的效果也很好。二是要根据虫情和防治时期,选择用药种类。越冬幼虫出蛰盛期、转叶化蛹前,以喷布1500倍50%对硫磷乳剂,或800～1000倍50%速灭松乳剂较好。各代卵孵化盛期,初孵幼虫卷叶前,以喷布1200～1500倍50%敌敌畏乳剂或1500倍敌百虫石灰液
To grasp the following three key technologies: First, we must grasp the timing of prevention and treatment. Overwintering larvae out of the heyday, pre-pupation leaflet prevention and control, is to control and reduce the annual population density of effective measures. All generations of egg hatch peak, larvae have not yet rolled leaves, the drug kill newly hatched larvae have a good effect. Emergence of adult insemination spray, kill the effect of the drug is also very good. The second is based on the situation and control of insects, choose the type of medication. Overwintering larvae out of the dormant period, turn leaflet pupation, to spray 1500 times 50% parathion emulsion, or 800 to 1000 times 50% quick release loose emulsion better. Each generation of egg hatching peak, newly hatched larvae before the leaf, to spray 1200 ~ 1500 times 50% dichlorvos emulsion or 1500 times trichlorfon lime liquid