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期 刊 ：植物保护学报 2003年

关键词：柑桔；星天牛；褐天牛；鞘翅目；杀虫作用；莰酮；生物活性；

Keywords:camphor, long-horned beetle, insecticidal function,

摘 要 ：在室内测定了樟树(Cinnamomum camphora L.)天然产物莰酮-[2](Cam-phor C10H16O)的杀虫活性和作用方式，并进行了田间试验。结果表明，莰酮对天牛成虫有较强的驱避、熏蒸和触杀作用。每点投放2％莰酮DP1-2g，药后24h对天牛驱避效果为55．00％-85．00％，药后72h达到94．12％-100．00％；熏蒸致死中浓度为8．20mg/L，触杀致死中浓度为15．25mg／L。经回归和相关分析，处理浓度与作用效果相关性均达到极显著水平。每洞穴喷2％莰酮DP0．1-0．2g，对天牛幼虫防治效果达85．80％-100％；每袋装2％莰酮DP1．5-2．5g，药后7-15天对天牛成虫驱避效果为80．95％-100％。药后30-60天为68．29％-86．36％，田间防治效果显著。

Abstract:Insecticidal activity and mode of action of camphor, one of the natural products extracted from Cinnamamum camphora L. were determined in the greenhouse and its efficacy was tested in the field. The results showed that camphor had obviously repellent, fum

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