水菖蒲活性物质β-细辛醚对玉米象不同虫态的熏蒸作用  

Fumigant toxicity of β-asarone extracted from Acorus calamus against the adults and immature stages of Sitophilus zeamais

作　　者：姚英娟[1,2] 蔡万伦[1] 杨长举[1] 张宏宇[1] 华红霞[1] 

机构地区：[1]华中农业大学城市有害生物防治研究所,武汉430070 [2]江西省农业科学院植物保护研究所,南昌330200

出　　处：《昆虫知识》2009年第6期911-914,共4页Entomological Knowledge

基　　金：国家农业部公益性行业科研专项经费项目(200803003)

摘　　要：为了确定水菖蒲(Acorus calamus)活性成分β-细辛醚对玉米象Sitophilus zeamais Motschulsky的熏蒸活性,研究β-细辛醚对玉米象不同虫态的熏蒸作用。结果表明:β-细辛醚对玉米象4种虫态都有一定的熏蒸作用,其中对成虫的熏蒸效果最好,其次是卵,幼虫和蛹对β-细辛醚具有较高的耐药性。以质量浓度为200μL/L熏蒸卵120h后,卵的死亡率达到了99.09%。对幼虫和蛹的熏蒸作用不明显。对成虫熏蒸120h后,LC50为17.82μL/L。The fumigant toxicity of β-asarone extracted from Acorus calamus against the adults and immature stages of Sitophilus zeamais Motschulsky were studied. The results showed that β-asarone had fumigant toxicity to all of the four stages of the insect. The fumigant has the most toxicity to the adult,followed to the egg,while the larva and pupa possessed a relatively high resistance to β-asarone. When the egg was treated with β-asarone at 200 μL/L concentration for 120 hours,the mortality was 99.09%. β-asarone showed little fumigation activity to the larva and pupa. After being treated for 120 hours, the LCso for S. zeamais adult was 17.82μL/L.

关 键 词：水菖蒲 Β-细辛醚 玉米象 熏蒸活性 

分 类 号：S379.5[农业科学—农产品加工] TQ453.29[农业科学—农艺学]