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当前位置: 首页 > 文章 > 3种生物源杀虫剂对杜仲梦尼夜蛾的毒力及防效 植物保护 2015,41 (3) 210-214
Position: Home > Articles > Toxicity and field efficacy of three biopesticides to Orthosia songi Plant Protection 2015,41 (3) 210-214

3种生物源杀虫剂对杜仲梦尼夜蛾的毒力及防效

作  者：
赵阳;朱景乐;杜红岩;李树战;孙志强;贺万森
单  位：
国家林业局泡桐研究开发中心;中南林业科技大学;灵宝市天地科技生态有限责任公司
关键词：
杜仲梦尼夜蛾;生物源杀虫剂;毒力测定;药剂成本
摘  要：
针对专性为害杜仲的食叶害虫杜仲梦尼夜蛾(Orthosia songi Chen et Zhang)幼虫进行室内毒力测定,比较了3种生物源杀虫剂对其3龄和5龄幼虫的杀虫活性,并进行了林间药效测定和防治示范试验。结果显示:甲氨基阿维菌素苯甲酸盐(甲维盐)对3龄和5龄幼虫的LC50值分别为0.152 5和0.204 7μg/L,苦参碱的LC50值分别为65.306 0和124.735 8μg/L,印楝素的LC50值分别为165.871 7和257.749 0μg/L。林间药效测定结果显示5.7%甲维盐微乳剂300万倍液防治效果最好,7d后校正死亡率达91.34%。防治示范试验表明,5.7%甲维盐微乳剂75 000倍液防治效果达95.69%,显著高于0.3%苦参碱水剂750倍液的防治效果(80.28%),且药剂成本7.5元/hm2,仅为后者的1.9%。
译  名：
Toxicity and field efficacy of three biopesticides to Orthosia songi
作  者：
Zhao Yang;Zhu Jingle;Du Hongyan;Li Shuzhan;Sun Zhiqiang;He Wansen;Paulownia R &D Center of China,Chinese Academy of Forestry (CAF);Non-timber Forest R &D Center,CAF;Eucommia Engineering Research Center of State Forestry Administration;Central South University of Forestry &Technology;Lingbao Tiandi Ecological Technology Co.,LTD;
关键词：
Orthosia songi;;biopesticides;;toxicity test;;pesticide cost
摘  要：
Orthosia songi Chen et Zhang is a monophagous insect specifically feeding on Eucommia ulmoides leaves.The toxicity and effectiveness of 3 biopesticides against 3rd and5 th instar larvae of O.songi were tested.Field trails and demonstration test were conducted to determine the optimal insecticide and control technique.Laboratory toxicity experiments showed that the LC50 values of matrine,azadirachtin and emamectin benzoate against 3rd and 5th instars larva were 65.306 0 and124.735 8μg/L,165.871 7μg/L and257.749 0μg/L,0.152 5μg/L and0.204 7μg/L,respectively.Field trials demonstrated that the corrected mortality was 91.34% spayed by 3 000 000 times dilution of 5.7% emamectin benzoate.Demonstration test indicated that control efficacy of 75 000 times dilution of 5.7%emamectin benzoate was 95.69%,significantly higher than that of 0.3% matrine diluted750 times which was used in practice.The cost of 5.7% emamectin benzoate was RMB7.5 yuan/hm2,approximately 1.9%that of matrine.

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