虱螨脲及其復配制劑對環(huán)境昆蟲的急性毒性和風險評估
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中圖分類號：S482.3 文獻標識碼：A 文章編號：1006-060X（2025）05-0072-07
引用格式：李偉，盧賽男，石璞，等.虱螨脲及其復配制劑對環(huán)境昆蟲的急性毒性和風險評估[J].湖南農(nóng)業(yè)科學，2025（5）：72-78.DOI：10.16498/j.cnki.hnnykx.2025.005.014
Abstract：Thisstudyaimstodeterminethetoxicefectsandrisksoflufenuronanditsompoundpreparationstothreeenviroental insectspeciesteicittooactfo）oellecatactdd Apis mellifera （feeding method and drip method） was tested. The median lethal rate （LR50） and median lethal dose （LD50） were calculated， and the risks were assessed with consideration to the recommended dosages in the field.Theresults showed that 15% lufenuron SC， 20% （20號 thiamethoxam + lufenuron SC， 30% chlorfenapyr + lufenuron SC，and 12% avermectin + lufenuron SC had the LR50 of >100 ，59.79，14， and 6.21g a.i. ?m2 on C. septempunctata and29，58，0.44，and 3.32ga.i./hm2 on T. japonicum，respectively. The four treatmentsshowed the LD50 of 35.470， 0.022，3.330， and 0.080μg a.i./bee，respectively，foracuteoral toxicity on A .mellifera，demonstratinglow，igh，moderte， and high toxicity， respectively. The four treatments showed the LD50 of >100 ，0.026，390，and 0.004μg a.i./bee，respectively， for acute contact toxicity on A mellifera，withlow，high，high，andhigh toxicity，respectively.Theriskassessmentresultsshowedthat 15% lufenuron SC was only unacceptable for T. japonicum in the farmland， and 20% thiamethoxam + lufenuron SC was acceptable for C. septempunctata. Outside the farmland， 30% chlorfenapyr + lufenuron SC was acceptable for C? ，septempunctata， and 12% avermectin + lufenuron SC was acceptable for C. septempunctata and T. japonicum.Therefore，during the fowering period of plants，compound preparations of lufenuron shouldbavoddasuchaspoibleandthseoffenonditsompoudpreparatiosinthaseareaofasituales shouldbeprohibited.Inthereleaseareaof predatorynatural enemies， 15% lufenuron SC and 20% thiamethoxam + lufenuron SC can beused inmoderation.
Keywords：lufenuron;Coccinellaseptempunctata;Trichogramma japonicum;Apismellifera;toxicity;riskassessment
隨著農(nóng)業(yè)生產(chǎn)效率的不斷提升，農(nóng)作物種植密度增加、連作現(xiàn)象普遍，導致害蟲危害日趨嚴重，對農(nóng)業(yè)生產(chǎn)構(gòu)成巨大威脅。（剩余12565字）