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糠片蚧(Parlatoria pergandii Comst.)在重庆年发生3～4代。28℃恒温完成一代需41.5天;在自然温度17.7～27.7℃下完成一代需62.6～64.7天。卵发育起点温度6.78℃,有效积温为102.2日度。主要以产卵雌成虫及未产卵雌成虫越冬。雌成虫寄生性天敌年平均寄生率14.4％。6～8月是幼蚧发生高峰期。药剂防治以杀扑磷对雌成虫效果最好,乐斯本及氧化乐果次之,氰戊菊酯较差。上述药剂分别与1％机油乳剂混用,可降低使用浓度,提高防治效果。
Parlatoria pergandii Comst. Occurs 3-4 generations in Chongqing. It takes 41.5 days to complete a generation at a constant temperature of 28 ° C and 62.6 to 64.7 days to complete a generation at a natural temperature of 17.7 ° C to 27.7 ° C. The starting point of egg development temperature 6.78 ℃, the effective accumulated temperature of 102.2 days. The main female spawning eggs and females do not oviposit overwintering. Female adult parasitoids average annual parasitic rate of 14.4%. June to August is the cradle of the occurrence of the peak. Pharmacological control to kill the phosphorus on the female adults the best, Les Benny and omethoate, fenvalerate poorer. The above medicaments are mixed with 1% oil emulsion separately, which can reduce the use concentration and improve the control effect.