香芹酚对烟草甲虫的熏蒸活性研究

In order to explore the fumigant toxicity of carvacrol against Lasioderma serricorne adults and the value of carvacrol as a source of plant fumigant. The fumigant insecticidal activity of carvacrol on L. serricorne was determined used the conical flask airtight fumigation under the condition of 27 ℃. The results showed that the fumigant insecticidal effect of carvacrol to tobacco beetle adults was very well. 32 mgoL-1 carvacrol fumigate tobacco beetle adults the mortality rates was 97.50% after 72 h. The LC50 were 28.852 mgoL-1,1 1.473 mgoL-1, 8.688 mgoL-1, 6.504 mgoL-1 and the LC95 were 517.494 mgoL-1, 94.310 mgoL-1, 40.240 mgoL-1, 35.647 mgoL-1, respectively, after carvacrol fumigate tobacco beetle adults 12 h, 24 h, 48 h and 72 h.