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在实验室熏蒸柜中,采用不同浓度硫酰氟对德国小蠊成虫进行熏蒸效果观察研究,运用时间-剂量-死亡率模型对10h内各处理组德国小蠊成虫累计死亡率随时间、剂量的变化进行拟合。结果表明:硫酰氟对德国小蠊成虫具有较强的急性毒性。硫酰氟熏蒸浓度为1.0g/m3、1.5g/m3、2.0g/m3、2.5g/m3和3.0g/m3熏蒸10h后,德国小蠊成虫的累计死亡率分别为4%、8%、72%、84%和100%,随着熏蒸时间的延长,硫酰氟半数致死浓度(即LC50)逐渐降低。熏蒸后10h的LC50和LC90估计值分别为1.95g/m3和2.44g/m3。
In the laboratory fumigation cabinet, different concentrations of sulfuryl fluoride were used to observe the fumigating effect on adult Blattella germanica. The cumulative mortality of German cockroach in each treatment group within 10 hours was calculated by time-dose-mortality model. Fitting changes. The results showed that sulfuryl fluoride had strong acute toxicity to adult Blattella germanica. The cumulative mortality rates of German cockroach adults were 4%, 8%, respectively after fumigation with sulfuryl fluoride at concentrations of 1.0g / m3, 1.5g / m3, 2.0g / m3, 2.5g / m3 and 3.0g / 72%, 84% and 100%. With the increase of fumigation time, the half-lethal concentration of sulfonyl fluoride (LC50) gradually decreased. LC50 and LC90 estimates of 10h after fumigation were 1.95g / m3 and 2.44g / m3, respectively.