几种无公害药剂对落叶松叶蜂的毒力及林间防治效果

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关键词无公害药剂；落叶松叶蜂；毒力测定；烟剂中图分类号S763.7文献标识码A文章编号 0517-6611（2026）02-0126-04doi：10.3969/j.issn.0517-6611.2026.02.021

AbstractFourdferentpolution-freecemicalswreusedtoeterinethetoxicityoflarchsawflylarvae，andtochemicalsadoesoke agentwerusedtocarryoutsprayandsmokeotrolexperiments，inodertosreenouttheidealtpesadconcentratiosofhmicals，and explorenewideasfopopulatocotrlandsentficprevenandotroloflachwlyesulssowdtatteetedi rate of two groups of 25% imidacloprid suspension at 2 OOO times was over 94% forlarch sawfly larvae，and the toxic effect was significant； the mortality rate of 1.8% avermectin emulsion corrected at 3000-4000 times dilution was over 90% ，and the toxic effect is outstanding； the toxicity of 25% insecticide urea wettble powder5OOOtimes liquid wasthe worst.Theresultsof theforestcontrol experimentshowed thathecorrected mortality rate of 1.8% avermectin emulsion was 80.16% to 88.92% ，and the corrected mortality rate of 25% chlorfenapyr suspension was 83.26% to 87.75% ; the corrected mortality rate of 1.2% matrine smoke agent on larch sawfly larvae was 66.54% to 71.61% ，and the control effect was relatively ideal. The use of this smoke agent to control larvae should be explored.

KeywordsPollution-free pesticide；Larch sawfly；Toxicity test；Smoke agent

落叶松叶蜂［Pristiphoraerichsonii（Hartig）］属于膜翅目（Hymenoptera）广腰亚目（Symphyta）叶蜂科（Tenthredinidae）锉叶蜂属（Pristiphora），又名落叶松红腹叶蜂[1]，是兴隆山保护区多年连续发生的食叶害虫，主要危害华北落叶松人工林。（剩余5052字）