水菖蒲提取物对水稻褐飞虱的生物活性研究  

Bioactivity of Extract from Acorus calamus against Nilaparvata lugens

作　　者：梁玉勇[1] 姚英娟[1] 王梁全[2] 程森弟[3] 杨长举[2] 华红霞[2] 

机构地区：[1]江西省农业科学院植物保护研究所,江西南昌330200 [2]华中农业大学城市有害生物防治研究所,湖北武汉430070 [3]江西科技职业学院,江西南昌330200

出　　处：《江西农业学报》2010年第12期94-96,共3页Acta Agriculturae Jiangxi

基　　金：江西省农业科学院人才专项项目;江西省农业科学院青年基金项目

摘　　要：采用微量点滴法和喷雾法测定了水菖蒲提取物及其乳油对褐飞虱3龄若虫的杀虫活性,结果表明:微量点滴法测定水菖蒲对褐飞虱3龄若虫72 h的半致死浓度LC50为24.30 g/L,毒力回归方程为y=3.64+0.98x。30%的乳油稀释10倍后喷雾,褐飞虱在24、48、72 h后的校正死亡率分别达到83.53%、87.06%和90.59%,对褐飞虱3龄若虫具有非常好的触杀活性。Topical application method and spray method were used to test the efficiency of the extract from Acorus calamus L.and its 30% EC against the 3-instar nymphs of Nilaparvata lugens.The results showed that at 72 h after treatment the LC50 of the extract was 24.30 g/L,the toxicity regressive equation was y=3.64 + 0.98x.At 24,48 and 72 h after spraying 10 times dilution of 30% EC of the extract,the corrected mortality of N.lugens was 83.53%,87.06% and 90.59% respectively.

关 键 词：水菖蒲 提取物 水稻褐飞虱 生物活性研究 微量点滴法 若虫 毒力回归方程 校正死亡率 半致死浓度 杀虫活性 乳油 喷雾法 触杀活性 测定 稀释 结果 

分 类 号：S[农业科学]