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杜松皑粉蚧是杜松的重要害虫。该虫在内蒙古包头1年发生2代,以2龄若虫越冬。5月中下旬和7月中下旬是若虫危害的两个高峰期。在越冬代若虫活动盛期(5月中旬)喷洒2.5%溴氰菊酯+40%氧乐果(1:3)1500~2000倍混合稀释液或40%氧乐果+80%敌敌畏乳油1000倍混合稀释液2~3次,杀虫效果可达95%。
Juniper cypress is an important pest of juniper. The insects occurred in Baotou, Inner Mongolia 1 generation 2 years to 2 instar nymphs overwintering. Late May and mid-July are the two nymph-damaging hazards. Spraying 2.5% deltamethrin + 40% of omethoate (1: 3) 1500 ~ 2000 times mixed dilution or 40% of omethoate + 80% of dichlorvos EC 1000 times in mid-May Mixed diluent 2 or 3 times, the insecticidal effect of up to 95%.