广西林业科学2025，Vol.54Issue(2)：209-215,7.DOI:10.19692/j.issn.1006-1126.20250212
8种杀虫剂对拉萨地区河曲丝叶蜂3龄幼虫室内药效试验及毒力测定
Indoor Efficacy Experiments and Toxicity Tests of Eight Insecticides on 3rd-instar Larvae of Nematus hequensis in Lhasa
摘要
Abstract
In order to effectively prevent and control Nematus hequensis in Lhasa and screen suitable pesticides and dosages,leaf dipping method was used to determine efficacy and toxicities of eight insecticides with differ-ent concentrations against 3rd-instar larvae of N.hequensis in 24,48 and 72 h.Results showed that all eight in-secticides exhibited varying degrees of lethal effects on 3rd-instar larvae of N.hequensis at different concentra-tions and time.Toxicities of microbial pesticides were Metarhizium anisopliae>Beauveria bassiana>Bacillus thuringiensis.Toxicities of chemical pesticides were lambda-cyhalothrin>thiamethoxam>imidacloprid>acet-amiprid>methomyl chloride cyanide.Lambda-cyhalothrin,thiamethoxam and imidacloprid all demonstrated strong toxicities and rapid efficacy,characterized by short duration and high corrected mortality rate for 3rd-in-star larvae of N.hequensis.Effects of microbial pesticides were relatively slower.Corrected mortality rates for 3rd-instar larvae of N.hequensis were 100%when exposed to 0.077 mg/L of lambda-cyhalothrin,0.167 mg/L of thiamethoxam and 0.100 mg/L of imidacloprid,with all LC50 values being relatively small.These chemical peti-cides were recommended for controlling 3rd-instar larvae of N.hequensis.关键词
浸叶法/毒力测定/拉萨/河曲丝叶蜂Key words
leaf dipping method/toxicity test/Lhasa/Nematus hequensis分类
农业科技引用本文复制引用
郭鑫楠,宋振浩,孙兆旭,董晓,唐晓琴,雷雪萍,臧建成..8种杀虫剂对拉萨地区河曲丝叶蜂3龄幼虫室内药效试验及毒力测定[J].广西林业科学,2025,54(2):209-215,7.基金项目
西藏自治区科技计划项目(XZ202201ZY0015N,XZ202301ZY0019N) （XZ202201ZY0015N,XZ202301ZY0019N）
西藏农牧学院研究生教育创新计划项目(YJS2023-44) （YJS2023-44）
