【摘要】 报道1.2%鱼藤酮微乳剂(M E)的制备方法。以二甲苯与乙酸乙酯(2∶3,v/v)为溶剂,CRES-LOX 3433为乳化剂,自来水为介质配制出的鱼藤酮M E,经热贮稳定性测定,各项质量指标合格;对黄曲条跳甲P hy llotreta striola ta(F abric ius)的毒力,1.2%鱼藤酮M E的LC50为503.25 m g/kg,7.5%鱼藤酮乳油(EC)的LC50值为640.22 m g/kg,M E的毒力是EC的1.27倍。更多还原

【Abstract】 A new formulation of 1.2% rotenone microemulsion（ME） was reported.The best solvent was the mixture of xylene and ethyl acetate（2∶3,v/v）;the emulsifier was CRESLOX3433;the other component was tap water.Main specifications of 1.2% rotenone ME with water and different content of calcium for the physical and chemical stability were tested after storage under 0²°C and（54±2）°C.The results indicated that all specifications were up to grade and there were no significant differences with deionized water.Bioassay results revealed that the values ofLC₅₀of 1.2% rotenone ME and 7.5% rotenone EC against Phyllotreta striolata（Fabricius） were 503.25 mg/kg and 640.22 mg/kg,respectively,suggesting that the toxicities of the two formulations against P.striolata had 1.27 times difference.更多还原