摘要
目的筛选具有优良击倒和致死性能的气雾杀虫剂三元复配配方。方法玻璃瓶药膜法。结果当胺菊酯与富右旋反式烯丙菊酯进行复配筛选时，配比范围在1∶0.625-1∶1.2的9个配比，其KT50的共毒系数大于120，表现显著增效作用。结合全倒时间、实际可能使用剂量等指标，选择了胺菊酯与富右旋反式烯丙菊酯的2.5＋2、3＋2.5、3.5＋1.5等3个击倒剂组合，用来筛选致死剂。每组合与氯氰菊酯不同剂量进行复配筛选表明：15个组合均有良好的击倒性和致死性，KT50范围为2.94-3.90 m in，24 h死亡率范围为72.14%-98.75%。结论以KT50的共毒系数和24 h死亡率的增效效果来综合评价，选择了胺菊酯、富右旋反式烯丙菊酯、氯氰菊酯以2.5＋2.0＋2.0、2.5＋2.0＋2.5、3.0＋2.5＋2.5、3.0＋2.5＋3.0、3.5＋1.5＋2.5、3.5＋1.5＋2.5等6个三元复配组合供开发选择。
Objective To screen mixed pyrethroids with excellent knocking down and killing efficacy for public health aerosol insecticides. Methods Glass-bottle residual film to determine insecticide contact including knocking-down and killing activities. Results Knocking-down screening showed that ratio of tetramethrin to rich-d- transallethrin was 1 ： 0. 625 N 1 ： 1.2. The CTCs were all over 120 and the synergistic effects were remarkable. According to entirely knock-down time and practicality dosage, three knock-down ratios of tetramethrin to rich-d-transal- lethrin 2. 5 ＋ 2, 3 ＋ 2. 5, 3. 5 ＋ 1.5 were selected. Killing screening showed that 15 disposals were all excellent with knocking and killing, their KTs0 was 2. 94 - 3.90 min and 24h mortality was 72. 14% - 98.75%. Conclusion Depending on CTCs of KTs0, entirely knock-down time, synergistic effect and practicality dosage, six mixed three-py- rethroids are selected. These ratios of tetramethrin to rich-d-transallethrin to cypermethrin are 2. 5 ＋ 2. 0 ＋ 2. 0, 2. 5 ＋2.0＋2.5, 3.0＋2.5 ＋2.5, 3.0 ＋2.5 ＋3.0, 3.5 ＋ 1.5 ＋2.5, 3.5 ＋1.5 ＋2.5 and all fit for aerosol insecticides.
出处
《中华卫生杀虫药械》
CAS
2009年第1期22-25,共4页
Chinese Journal of Hygienic Insecticides and Equipments
