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、...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。展开更多
This paper summarizes atmospheric aerosol concentrations of 5 stratospheric balloon soundings during the period from 1984 to 1994. Aerosol-rich layers in the troposphere were detected and the causes were analyzed. Th...This paper summarizes atmospheric aerosol concentrations of 5 stratospheric balloon soundings during the period from 1984 to 1994. Aerosol-rich layers in the troposphere were detected and the causes were analyzed. The main results are as follows: (1) the vertical distribution of the atmospheric aerosol is affected by atmospheric dynamic processes, humidity, etc.; (2) the tropospheric column concentrations of aerosol were 72.2×105, 20.2×105, 20.7×105 and 34.4×105 cm-2 and occupying 81%, 61% and 60% of the 0-to-30 km aerosol column, on Aug. 23, 1984, Aug. 22, 1993, Sept. 12, 1993 and Sept. 15, 1994, respectively; (3) the effect of volcano eruption was still evident in the aerosol profiles, 28 and 27 months after the El Chichon and Pinatubo eruption; (4) the aerosol concentration in the troposphere did not decrease at all heights as atmospheric aerosol model.展开更多
文摘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。
文摘This paper summarizes atmospheric aerosol concentrations of 5 stratospheric balloon soundings during the period from 1984 to 1994. Aerosol-rich layers in the troposphere were detected and the causes were analyzed. The main results are as follows: (1) the vertical distribution of the atmospheric aerosol is affected by atmospheric dynamic processes, humidity, etc.; (2) the tropospheric column concentrations of aerosol were 72.2×105, 20.2×105, 20.7×105 and 34.4×105 cm-2 and occupying 81%, 61% and 60% of the 0-to-30 km aerosol column, on Aug. 23, 1984, Aug. 22, 1993, Sept. 12, 1993 and Sept. 15, 1994, respectively; (3) the effect of volcano eruption was still evident in the aerosol profiles, 28 and 27 months after the El Chichon and Pinatubo eruption; (4) the aerosol concentration in the troposphere did not decrease at all heights as atmospheric aerosol model.