5种植物源杀虫剂对美国白蛾的田间药效评价  

Efficacy Evaluation of Five Kinds of Botanical Insecticides to Control Hlyphantria cunea(Drury)in the Field

作　　者：苑士涛[1] 李梦瑶 葛亚菲 李旭昭 魏国树[1] YUAN Shi-tao;LI Meng-yao;GE Ya-fei(College of Plant Protection,Hebei Agricultural University,Baoding,Hebei 071000;Technology Center of Shijiazhuang Customs,Shijiazhuang,Hebei 050051)

机构地区：[1]河北农业大学植物保护学院,河北保定071000 [2]石家庄海关技术中心,河北石家庄050051

出　　处：《安徽农业科学》2024年第4期136-138,192,共4页Journal of Anhui Agricultural Sciences

摘　　要：[目的]明确5种植物源杀虫剂对美国白蛾的田间防效及最适药剂用量。[方法]采用喷雾处理对美国白蛾盛发前期三龄幼虫进行田间防效试验。[结果]1.2%烟碱·苦参碱乳油6、8、12 mg/L对美国白蛾的防治效果最好,药后3 d为87.83%~92.61%,药后14 d防效达到最高,为95.85%~97.99%。1.5%苦参碱可溶液剂、0.5%虫菊·苦参碱可溶液剂药后14 d防效达到最佳,分别为84.62%~95.13%、89.14%~91.93%。[结论]1.2%烟碱·苦参碱乳油推荐有效成分含量6~12 mg/L对美国白蛾盛发前期三龄幼虫的防治效果最好,可大面积推广使用。0.5%虫菊·苦参碱可溶液剂和1.5%苦参碱可溶液剂在防治时也可进行交替使用,对杨树生长、有益天敌种类和数量无不良影响。[Objective]To evaluate the field efficacy of five botanical insecticides to control Hlyphantria cunea and determine the optimum dosage.[Method]The control efficacy test of spray treatment on the third instar larvae of Hlyphantria cunea before its outbreak was tested in the field.[Result]The best control effect of nocotine·matrine1.2%EC at 6,8,12 mg/L was 87.83%-92.61%on the 3rd day after treatment,and which reached the peak on the 14th day,ranging from 95.85%-97.99%,1.5%matrine soluble concentrate and 0.5%pest chrysanthemum·matrine soluble concentrate reached the peak on the 14th day after treatment,which were 84.62%-95.13%and 89.14%-91.93%,respectively.[Conclusion]The recommended active ingredient content of nocotine·matrine 1.2%EC is 6-12 mg/L,which has the best effect on the control of the 3rd instar larvae before its outbreak,and can be widely used.1.5%matrine soluble concentrate and 0.5%pest chrysanthemum·matrine soluble concentrate can also be used alternately during the control,which has no adverse effect on the growth of poplar,the species and number of beneficial natural enemies.

关 键 词：苦参碱 植物源杀虫剂 美国白蛾 田间防效 

分 类 号：S482.3[农业科学—农药学]