论文部分内容阅读
杨圆蚧(Quadraspidiotus gigas)是危害物树人工林主要害虫之一。为尽快建立起杨圆蚧害虫科学管理体系,以化学防治为应急措施,较系统地研究了杨圆蚧地防治时间、药剂种类、施药方法,协调化学防治与生物防治的关系等项内容。1984—1986年试验,杨圆蚧化学防治的最佳时期是雌成虫羽化盛期和初孵若虫的孵化盛期,在绥化地区的时间分别为5月15日左右和6月25日左右,同时还避免对杨圆蚧主要的天敌——蚜小蜂地杀伤。在成虫防治期,杀虫效果最佳的为杀虫优(一、二号)、D-T-4、C-T-3、A-T-1、B-T-2、防蚧油触杀型药剂,校正死亡率都在84％以上。在初孵等若虫防治期,杀虫效果最佳的为杀虫优(一、二号)B-T-2、A-T-1、C-T-3,D-T-4、杀蚧油、DDVP柴油等触杀型药剂,效果都在94％以上。在施药方法上先把杨圆蚧壳刷掉后,再行涂干或喷干效果最佳。
Quadraspidiotus gigas is one of the major pests of the pest plantation. In order to set up a scientific management system for pests of Yangyou jia as soon as possible and to take chemical control as an emergency measure, the contents of prevention and control time, types of pesticides, application methods, coordination between chemical control and biological control were systematically studied. From 1984 to 1986, the best period for chemical control of P. yunnanensis was the incubation period of females and the hatching of newly hatched nymphs. The time in Suihua was around May 15 and June 25, respectively. At the same time Also avoid the main natural enemies of Yang Kui - aphids bee kill. In the control of adult insects, the best insecticidal effect was insecticide (No.1 and No.2), DT-4, CT-3, AT-1 and BT-2, More than 84%. In the early hatch and other nymphs control period, the best insecticidal effect of insecticide (No. 1, No. 2) BT-2, AT-1, CT-3, DT-4, , The effect is above 94%. The method of spraying the first round Yang scale shell brush out, then dry or spray the best effect.