【摘要】 为明确3%高渗苯氧威乳油、5%氟虫脲乳油、25%阿维·灭幼脲悬浮剂、20%除虫脲悬浮剂、1.8%阿维菌素乳油和25%灭幼脲三号悬浮剂等农药对刚竹毒蛾幼虫的毒力和林间防治效果,采用点滴法测定出6种药剂的致死中浓度(LC₅₀)等毒力指数,同时开展林间应用防治试验。结果表明:6种生物化学农药对刚竹毒蛾幼虫杀虫活性好,以3%高渗苯氧威乳油的杀虫活性最强,20%除虫脲悬浮剂的杀虫活性较弱;3%高渗苯氧威乳油、5%氟虫脲乳油、25%阿维·灭幼脲悬浮剂、1.8%阿维菌素乳油、25%灭幼脲三号悬浮剂和20%除虫脲悬浮剂LC₅₀分别为1.962、4.573、4.691、4.827、5.051和5.106 mg/L;6种农药的无人机喷雾,药后5 d林间防治效果均达86%以上。更多还原

【Abstract】 To determine the toxicity of pesticides, such as 3% hypertonic fenoxycarb EC, 5% flufenoxuron EC, 25% abamectin SC, 20% diflufenoxuron SC, 1.8% avermectin EC and 25% diflubenzuron SC, to the larvae of Pantana phyllostachysae and their control effects in the forest, the toxicity index(LC₅₀) of six insecticides is tested using dropping method, and the control experiment is carried out in the forest. The results show that the 6 kinds of biochemical pesticides have good insecticidal activity to the larvae of P. phyllostachysae. The insecticidal activity of 3% fenoxycarb EC is the highest, and that of 20% diflubenzuron SC is the lowest. 3% hypertonic fenoxycarb EC, 5% flufenoxuron EC, 25% abamectin SC, 1.8% abamectin EC, 25% diflubenzuron SC Ⅲ and 20% diflubenzuron SC LC₅₀ are 1.962, 4.573, 4.691, 4.827, 5.051 and 5.106 mg/L, respectively. After 5 days of spraying by UAV, the control effect of the 6 kinds of pesticides is over 86%.更多还原