【摘要】 采用广口瓶密闭方法,测定红桔油Citrustangerina、柠檬叶油Citruslimonum、红河橙油Citrushongheensis、山苍子油Litseacubeba、留兰香油Menthaspicata、松节油Pinustabulaeformis、黄樟油Cinnamonumcamphora、互叶白千层油Melaleucaalternifolia、蓝桉叶油Eucalyptusglobulus等9种植物精油,在熏杀浓度为16μL/L、熏蒸时间为24、36、48及60h条件下,对玉米象Sitophiluszeamais成虫的熏蒸活性。结果表明:黄樟油、互叶白千层油、柠檬叶油、留兰香油及松节油的熏杀效果较好,尤以黄樟油的效果最佳。黄樟油在12、24、36、48和60h不同熏蒸时间下的LC50值分别为31.43、11.26、6.16、2.72和1.11μL/L。可考虑将黄樟油作为磷化氢及溴甲烷的替代药物用于控制玉米象的危害。更多还原

【Abstract】 By means of sealing jar, fumigant toxicities of the essential oils of Citrus tangerina, (Citrus) limon, Citrus hongheensis, Litsea cubeba, Mentha spicata, Pinus tabulaeformis, Cinnamoum camphora, Melaleuca alternifolia and Eucalyptus globules on adults of maize weevil, Sitophilus (zeamaise) Motschulsky were investigated at the dosage of 16 μL/L and under the exposure times of (24 h,) 36 h, 48 h, and 60 h, respectively. The results indicated that fumigation efficacies of the (essential) oils of Cinnamoum camphora, Melaleuca alternifolia, Citrus limon, Mentha spicata, and Pinus tabulaeformis are better than those of the other four essential oils, and Cinnamoum camphora oil showed the best fumigation toxicity. The LC(50)s of the maize weevil adults fumigated by (Cinnamoum) camphora oil under the exposure times of 12 h, 24 h, 36 h, 48 h and 60 h are 31.43,(11.26,)6.16,2.72 and 1.11 μL/L, respectively. Cinnamoum camphora oil can be considered as a promising alternative substance for methyl bromide and phosphine to control maize weevil.更多还原