远东杉苞蚧发生规律与防治的初步研究

Primary study on development rhythm and control of Physokermes jezoensis

通过2004～2005年对远东杉苞蚧生活史的观察,证明该虫在哈尔滨市1年发生1代,以2龄若虫在针叶表面越冬。越冬若虫3月下旬开始活动,5月中下旬为雌雄交配盛期,6月下旬为初孵若虫孵化盛期,8月末1龄若虫开始蜕皮变为2龄若虫。药剂防治试验的研究表明,若虫初孵阶段是药剂防治的最佳时期,并筛选出几种防治效果较好的药剂。

Based on the observation of Physokermes jezoensis in 2004 and 2005, the results showed that the pest developed one generation a year in Harbin and overwintered on needle surface of spruce in the second instar nymph stage. The overwintering nymphaes began to activate in the last ten-day of March, the peak of mating was in the middle and last ten-day of May, the hatching peak of the first nymphaes was in the last ten-day of June.At the end of August, first instars began to exuviate into second instars. The results of the control test show that the most effective period for controlling the pests is the first hatching period, and the more effective pesticides to the pests are given in the paper.