药剂防治日本龟蜡蚧途径及效果的探讨

日本龟蜡蚧为害猖獗且难以防治。本研究根据其生长发育特点与树木的生理特性，在成虫后期暨树木代谢旺盛期，用内吸性药剂进行涂杆、根灌，在若虫孵化期用内吸性、内渗性及触杀性较强的药剂进行喷雾防治，收到了理想的效果。

EXPLORATION OF WAYS AND EFFECT OF PESTICIDES AGAINST CEROPLASTES JAPONICUS GREEN

Damage by Ceroplastes japonecus Green to plants is widespread and diffcult to counter. In this study, the ways and effect of pesticides used in different phases of insect development and plant's physiological characteristic were compared. We achieved results when we treated the bark and drenched and filled the roots of trees with systemic pesticides during the later period of imago, meanwhile the trees most vigorous metabolic stage. We achieved also best results when we sprayed a strong systimic and penetrable and contact pesticides during nymph incubation.