几种植物提取液对玉米蚜的防治效果试验  

Control effects of several plant extracts on Rhopalosiphum maidis(Fitch)

作　　者：季香云[1] 包杨滨[1,2] 蒋杰贤[1] 万年峰[1] 

机构地区：[1]上海市农业科学院生态环境保护研究所上海市设施园艺技术重点实验室,上海201106 [2]扬州大学园艺与植物保护学院,扬州225009

出　　处：《上海农业学报》2009年第2期49-51,共3页Acta Agriculturae Shanghai

基　　金：上海市科委重大攻关项目(06DZ19101)资助

摘　　要：采用浸叶和浸渍相结合的方法分别研究了辣椒、马钱子、蔓陀罗和烟碱4种植物提取液对玉米蚜的生物活性影响。结果表明:4种植物提取液对玉米蚜的LC50分别为0.0260、0.1590、0.24620、.3260 mg/mL,其中辣椒和马钱子提取物以体积比8∶2为最佳配比组合,共毒系数为149.8。对复合植物提取液进行了初步的田间试验,药后7 d最佳防治效果为70.6%。The toxicities of 4 plant extracts of hot pepper,poisonnut, jimsonweed and nicotine to adults of Rhopalosiphum maidis （Fitch）were studied by leaf soaking and immersion. The results showed that the LC50 of the 4 plant extracts was respectively O. 0260,0. 1590,0. 2462,0. 3260 mg/mL. Mixing both hot pepper and poisonnut extracts at the volumetric ratio of 8 to 2 was the best combination and its co-toxicity coefficient was 149.8. The preliminary field tests showed that the control efficacy of this mixture on Rhopalosiphum maidis was 70.6% on the 7th day after application.

关 键 词：辣椒 马钱子 玉米蚜 生物防治 

分 类 号：S435.13[农业科学—农业昆虫与害虫防治]