日本龟蜡蚧 Ceroplastes japonicus Green是园林、林、果、桑、茶等许多植物的威胁性害虫。分布于我国18个省、市。被害植物达106种。危害呈日益猖獗趋势。为了合理地制定该虫防治策略,作者于近年先后对蜡被形成过程及其与防治的关系进行了研究。 一、蜡被形成过程 对蜡被形成过程的观察,是定虫定时进行的,开始是连续观察,以后每间隔一定时间观察一次,其间隔时间的长短,随蜡被形成过程的推移而延长。 (一)硬质蜡被的形成 若虫初孵出时,全体表面光滑,无任何蜡质物,以后逐渐形成完整蜡被。根据观察,其形成过程如下。 1.头部:若虫孵化后12小时左右,头部中央近前缘处,出现“山”形浅纹,以后随着蜡的不断分泌,此纹逐渐增宽,并趋于愈合,至72小时左右,便成为向前方突出的方 Ceroplastes japonicus Green is a threatening pest of many plants such as garden, forest, fruit, mulberry and tea. Distributed in China’s 18 provinces and cities. 106 species of victims. Harm is an increasingly rampant trend. In order to rationally formulate the pest control strategy, the author has studied the wax formation process and its relationship with prevention and control in recent years. First, the formation of wax is the process of formation of the wax was observed during the fixed insects is scheduled to start a continuous observation, after each interval of time to observe once, the length of time interval, with the passage of the wax is formed by the extension of the process. (A) the formation of hard wax was nymphs when new hatched, the whole surface smooth, without any waxy material, and later gradually formed a complete wax was. According to the observation, the formation process is as follows. 1. Head: nymphs hatch about 12 hours later, near the central front of the head, there are “mountain” -shaped shallow lines, with the continued secretion of wax, the pattern gradually widened and tends to heal until about 72 hours , It becomes a prominent side to the front