2种生物试剂对林间美国白蛾防治效果试验  

Evaluation of the field control efficacy of two biological reagents against Hyphantria cunea in forests

作　　者：文杨 薛玉燕 周洋 李胜国 魏宁 胡猛 Wen Yang;Xue Yuyan;Zhou Yang;Li Shengguo;Wei Ning;Hu Meng(Jining Forestry Protection and Development Service Center,Shandong,Rencheng 272000,China;Qufu Forestry Protection and Development Service Cente,Shandong,Qufu 273100,China;Rencheng Natural Resources Bureau,Shandong,Rencheng 272000,China)

机构地区：[1]济宁市林业保护和发展服务中心,山东任城272000 [2]曲阜市林业保护和发展服务中心,山东曲阜273100 [3]任城区自然资源局,山东任城272000

出　　处：《江苏林业科技》2025年第1期20-23,共4页Journal of Jiangsu Forestry Science & Technology

摘　　要：在济宁试验区,利用无人机喷施苏云金芽孢杆菌(Bt,32000 IU/mg)、病毒复合微生物杀虫剂(美国白蛾核型多角体病毒1000万PIB/mL+苏云金芽孢杆菌2‰)对林间美国白蛾1—3龄幼虫防治效果开展试验,通过稀释40,20,10倍3个配比梯度,采用新复极差法对2种药剂的防治效果进行统计分析,结果表明:美国白蛾病毒复合微生物杀虫剂与Bt杀虫剂的防治效果存在显著差异(P<0.05)。其中,喷施复合杀虫剂20倍液的防治效果显著优于Bt 10倍液,3 d时幼虫死亡率达80%,7 d后防治效果达到99%,较Bt杀虫剂提高10.37%—17.66%。美国白蛾病毒复合微生物杀虫剂对桑蚕、蜜蜂、虾蟹等无毒害,可在特种养殖等敏感区域推广应用,能够有效降低害虫种群密度,抑制虫害扩散风险,从而维护森林生态系统的健康与稳定。A field study was conducted in Jining Experimental Area to evaluate the control efficacy of UAV-sprayed Bacillus thuringiensis(Bt,32 000 IU/mg) and a novel viral-microbial composite insecticide(10 million PIB/mL Hyphantria cunea nucleopolyhedrovirus [HcNPV] + 0.2% Bt) against 1st-3rd instar H.cunea larvae by three dilution gradients(40,20,and 10 times).Statistical analysis using Duncan′s new multiple range test revealed significant differences(P<0.05) in control efficacy between the two insecticides.The 20 times gradient HcNPV-Bt formulation achieved superior performance compared with the 10 times Bt treatment,inducing 80.2% larval mortality at 3 days post-application and 99.1% efficacy after 7 d,getting 10.37%—17.66% enhancement over Bt using alone.The HcNPV-Bt formulation showed no toxicity to non-target species(silkworms,honeybees,crustaceans),suggesting its potential for integrated pest management in special type breed regions to suppress pest populations,mitigate infestation risk,and safeguard forest ecosystems.

关 键 词：美国白蛾 BT 美国白蛾病毒复合微生物杀虫剂 防治效果 

分 类 号：S763.42[农业科学—森林保护学]