【摘要】 利用8种不同类型的农药对美国白蛾3龄幼虫进行了致死效果试验。结果表明,4.5%高效氯氰菊酯乳油、25%高氯.辛硫磷乳油对美国白蛾致死速度最快,在36h的致死率均达100%。48%毒死蜱乳油、5.7%高氯.氟铃脲乳油在48h的致死率也达到了100%,3.2%阿维菌素乳油2000倍液在72h的致死效果达到了97.5%,0.2%甲氨基阿维菌素苯甲酸盐乳油1000倍液在72h的致死效果达到了90%。而5%氟铃脲乳油和5%灭幼脲乳油在72h对美国白蛾的致死率较低,仅分别达到27.6%、42.2%。更多还原

【Abstract】 We studied the mortal effect of eight pesticides against Hyphantria cunea 3rd instar larvae by immersion testing method.The results showed that the mortality rate of larvae was most quickly reached 100% after treatment of 4.5%cypermethrinemulsible Ec、25%cypermethrinemulsible·phoxim Ec in 36h.And the rate of death was also 100% after treatment of 48% dusipi Ec、5.7%cypermethrinemulsible·hexaflumuron Ec in 48h.The mortality rate was up to 97.5% 、90% respectively with the treatment of 2000-fold 3.2% abamectin Ec and 1000 time 0.2%emamectin benzoate Ec in 72h.While the mortality rate was still lower with the treatment of 5% hexaflumuron Ec and 5% chlorbenzuron Ec in 72h,the rate was only 27.6%、42.2% respectively.更多还原