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为寻求防治扶桑绵粉蚧Phenacoccus so lenopsis Tinsley有效化学药剂,在室内测定了9种化学农药对该虫的致死效果,在此基础上,选出4种农药进行了田间防治试验。结果表明,室内条件下三氯杀螨醇、阿维菌素、阿维-氯氰、联苯菊酯4种药剂对成虫的校正死亡率在23.7%～66.7%之间,明显低于对1龄若虫的作用效果;高效氯氟氰菊酯、吡虫啉、啶虫脒和毒死蜱4种化学药剂,在田间施药后第5天的防治效果可达到91%以上,其中啶虫脒和毒死蜱的防治效果分别达到95.6%和98.2%。在防治应用中,建议推荐高效氯氟氰菊酯、吡虫啉、啶虫脒、马拉硫磷和毒死蜱5种药剂,同时应注意针对不同的虫态有必要适当调整用药浓度(就除害处理而言)和施药次数,以达到理想的防治效果。
In order to find out the effective chemical agents of Phenacoccus so lenopsis Tinsley, nine kinds of chemical pesticides were tested indoor to kill the insects. Based on these, four kinds of pesticides were selected for field control test. The results showed that the corrected mortalities of dicofol, abamectin, abamectin, bifenthrin against adult adults were between 23.7% and 66.7%, significantly lower than those of the first instar nymphs The results showed that the control efficacy of cyhalothrin, imidacloprid, acetamiprid and chlorpyrifos was above 91% on the fifth day after the pesticide application in the field. The control effect of acetamiprid and chlorpyrifos was 95.6 % And 98.2%. In the application of prevention and control, it is recommended to recommend 5 kinds of agents, namely lambda-cyhalothrin, imidacloprid, acetamiprid, malathion and chlorpyrifos. At the same time, it is necessary to pay attention to the need of adjusting the concentration of the drug appropriately for different insect states Say) and the number of pesticides in order to achieve the desired effect of prevention and treatment.