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8种杀虫剂对榕透翅毒蛾的室内防效
吴胜平1, 黄华毅2, 赵丹阳2, 赵奕2, 胡铭彪2, 吴锡豪2, 张心结2
1.惠东县林业局;2.广东省林业科学研究院
摘要:
为明确不同杀虫剂对榕透翅毒蛾不同龄期的敏感度，研究采用胃毒法测定了 8 种杀虫剂稀释 500 倍、1 000 倍和 1 500 倍 3 种浓度分别对榕透翅毒蛾初孵幼虫和 3 龄幼虫的毒杀活性。结果表明：8 种 杀虫剂均具有一定的防治效果，其中 5% 阿维菌素、12% 甲维 · 虫螨腈、15% 甲维 · 茚虫威对榕透翅毒蛾 初孵幼虫防治效果较好，3 种浓度在 24 h 后校正死亡率均达 100%；15% 甲维 · 茚虫威、12% 甲维 · 虫螨 腈和 4.5% 高效氯氰菊酯的 500 倍和 1 000 倍浓度对榕透翅毒蛾 3 龄幼虫具有较好的防治效果，在 24 h 后 校正死亡率均达 100%；3 龄幼虫较初孵幼虫而言，耐药性更强，同一药剂同一浓度处理下 3 龄幼虫的校 正死亡率更低或达到 100% 校正死亡率时间更长。因此，可选用 5% 阿维菌素、12% 甲维 · 虫螨腈、15% 甲维 · 茚虫威和 4.5% 高效氯氰菊酯作为当前防治榕透翅毒蛾的主要防治药剂。
关键词:  榕透翅毒蛾  杀虫剂  防治效果  榕属植物
DOI：
分类号:
基金项目:广东省林业科技创新项目 (2020KJCX004)
Indoor Control Efficacy of 8 Insecticides against Perina nuda
Wu Shengping1, Huang Huayi2, Zhao Danyang2, Zhao Yi2, Hu Mingbiao2, Wu Xihao2, Zhang Xinjie2
1.The Forestry Bureau of Huidong County;2.Guangdong Academy of Forestry
Abstract:
In order to clarify the susceptibility changes of different insecticides at different concentrations to different instars of the Perina nuda, diluted 500 times, 1 000 times, and 1 500 times concentrations of the 8 insecticides were determined on the newly hatching and third instar larvae of P. nuda in laboratory by stomach toxicity method. The results showed that 8 insecticides had a good control effect, among which 5% Avermectin EC, 12% Emamectin benzoate · chlorfenapyr SC and 15% Emamectin Indoxacarb SC had a better control effect on the newly hatching larvae, and the corrected mortalities of the three concentrations all reached 100% after 24 hours, diluted 500 times and 1 000 times concentrations of 15% Emamectin Indoxacarb SC, 12% Emamectin benzoate · chlorfenapyr SC, and 4.5% Lambda-cyhalothrin EC also showed same control effects on the third instar larvae of the P. nuda. The third instar larvae were more resistant than the newly hatched larvae of insecticides, and the corrected mortalities was lower or reached 100% for a longer time. As a result, 5% Avermectin EC, 12% Emamectin benzoate · chlorfenapyr SC, 15% Emamectin Indoxacarb SC, and 4.5% Lambda-cyhalothrin EC are recommended to be used for the control of P. nuda.
Key words:  Perina nuda  insecticides  control efficiency  Ficus spp.