苹果套袋后,康氏粉介、玉米象等害虫易从果袋通气孔或袋口等孔隙处钻入袋中为害果实,因为农药喷不到袋内果实上,无法将其杀死,它们的大量繁殖会严重影响果实质量。康氏粉介。康氏粉介属同翅目,粉介科。在沂源县每年发生3代,以二、三代若虫及成虫在果袋内集中危害。随着套袋时间 Apple bagging, Compton powder, corn and other pests easily from the fruit bag vent hole or pocket into the bag and other harmful fruit, because pesticides can not spray bag fruit, can not kill them Massive multiplication can seriously affect fruit quality. Kang’s powder media. Kang’s powder medium is Homoptera, Fengyi Branch. Occurred in Yiyuan County, 3 generations each year, with two or three generations of nymphs and adults concentrated in the fruit bag concentration hazards. With bagging time