水菖蒲水提物对谷蠹和玉米象的触杀活性  

Contact Toxicity of Aqueous Extract from Acorus calamus L. Rhizome against Rhyzopertha dominica and Sitophilus zeamais

作　　者：乔利利[1] 杨杉[1] 华红霞[1] 蔡万伦[1] 张宏宇[1] 杨长举[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

出　　处：《中国粮油学报》2009年第3期108-112,共5页Journal of the Chinese Cereals and Oils Association

基　　金：国家科技部"十五"重点科技攻关项目(2004BA523B03-02)

摘　　要：为开发绿色环保、价格低廉的水剂提供理论依据,采用药膜法研究了水菖蒲根茎水提物对谷蠹、玉米象成虫的触杀活性。结果表明:水菖蒲根茎水提物对谷蠹、玉米象成虫均具有较强的触杀活性,并且对谷蠹成虫的触杀活性明显强于其对玉米象成虫的触杀活性,对谷蠹成虫0.46 mg/cm2处理4 d后校正死亡率就达到100.0%,而对玉米象成虫1.50 mg/cm2处理4 d后校正死亡率达到90.8%。处理4 d后对谷蠹、玉米象成虫的毒力回归方程及LD50分别为:谷蠹y=3.17+5.45 x,0.26 mg/cm2;玉米象y=-0.36+9.50 x,1.09 mg/cm2。In order to develop a safe and cheap aqua, the contact toxicity of aqueous extract from Acorus calamus L. rhizome against adults of Rhyzopertha dominica Fabricius and Sitophilus zeamais Motschulsky were studied under laboratory conditions with the drug - film method. Results show that the aqueous extract from Acorus calamus L. rhizome has well contact toxicity against adults of R. dominica and S. zeamais, more effective for the former pest. The corrected mortality against adults of R. dominica is up to 100.0% at 4th day after treatment in concentration of 0.46 mg/cm^2; while the corrected mortality against adults of S. zeamais is up to 90.8 % at 4th day in concentration 1.50 mg/cm^2. The probability mortality regression linear and LDso against adults of R. dominica and S. zeama/s are y = 3.17 ＋ 5.45x,0.26 mg/cm^2 and y = - 0.36 ＋ 9.50 x, 1.09 mg/cm^2, respectively.

关 键 词：水菖蒲 水提物 谷蠹 玉米象 触杀作用 

分 类 号：S482.39[农业科学—农药学]