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采用滤纸药膜法和广口瓶熏蒸法,在室内测定了大蒜、生姜、花椒和八角茴香4种植物精油对金银花贮藏期害虫锯谷盗的生物活性。结果表明,4种植物精油对锯谷盗成虫均具有一定的驱避活性和熏蒸活性,平均驱避率分别为70.71%、60.64%、53.78%和66.33%,平均校正死亡率分别为60.47%、51.71%、47.01%和56.28%,差异达显著水平。4种植物精油的不同浓度和不同作用时间对锯谷盗成虫的驱避活性有显著差异,随着植物精油浓度的降低和作用时间的延长,各植物精油的驱避活性逐渐降低,浓度和时间的交互作用对驱避活性无显著影响。4种植物精油的浓度、不同作用时间以及它们的交互作用对锯谷盗成虫的熏蒸活性有显著影响,随着植物精油浓度的降低,熏蒸活性逐渐降低,随着作用时间的延长,熏蒸活性逐渐增强。进一步的毒力分析表明,大蒜精油的毒力最强,12 h的LC50值为6.01μL/L,随时间的延长,各植物精油的熏蒸毒力明显增强。这说明4种植物的精油对金银花贮藏贮藏期害虫锯谷盗具有一定的生物活性,具有开发为新型无公害杀虫剂的潜力。
The biological activity of four essential oils of garlic, ginger, pepper and star anise on the sawdust of the honeysuckle during the storage period was determined by the filter paper membrane method and the jar fumigation method. The results showed that the four plant essential oils had certain repellent and fumigant activities against adult sawfly. The average repellent rates were 70.71%, 60.64%, 53.78% and 66.33%, respectively. The average corrected mortality rates were 60.47% 51.71%, 47.01% and 56.28%, the difference was significant. The repellent activities of four plant essential oils at different concentrations and different time on adult sawfly adults were significantly different. With the reduction of plant essential oil concentration and the extension of the action time, the repellent activity of the essential oil of each plant gradually decreased. The concentration and time The interaction did not significantly affect the repellent activity. The concentrations of four essential oils, their interaction time and their interaction had a significant effect on the fumigation activity of adults of Sawgrass, and the fumigation activity decreased with the decrease of plant essential oil concentration. The fumigation activities gradually decreased with the prolongation of the action time Enhanced. Further virulence analysis showed that the virulence of garlic oil strongest, 12h LC50 value of 6.01μL / L, over time, each plant essential oil fumigation virulence significantly increased. This shows that four kinds of plant essential oils of honeysuckle storage and storage of pests Saw Valley Pirates has some biological activity, with the potential to develop a new type of pollution-free pesticides.