2种杀螨剂亚致死剂量对二斑叶螨生长和繁殖的影响

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关键词二斑叶螨；杀螨剂；亚致死剂量；生长；繁殖中图分类号 S482.5+2 文献标识码A文章编号 0517-6611（2025）16-0129-04doi：10.3969/j.issn.0517-6611.2025.16.029

Abstract In order to investigate the effects of sublethal doses （ LC10 and LC30 ）of different acaricides on the growth and reproduction of Tetranychusurtice，eviuleneofacaricidestomaleadultiteandsofTetrancusurticeeredeteidusig tesprayeod，d theefectsofitonthegrowthandreproductionofTtranychusurticewereanalyzdbythelifeabletechnque.Theresultsshowedthathe （204号 LC30 and LC10 of bifenazate were 3.53 and 0.65mg/L for female adult mites， 4.93 and 1.12 mg/L for eggs，respectively； the LC30 and LC 10 of cyflumetofen was 1.22and 0.31 mg/L for female adult mites， 3.52 and 1.08mg/L for eggs，respectively. Comparing with the clear water control group，treating femaleadult mites and eggs ofthe Tetranychus urticae withsublethal dosesof bifenazate andcyflumetofen （ LC10 and LC30 ）， respectivelytprevosipdseiantlyediftrtgosndpoid duction，thesurvivalrateandthehatchingrateoftheTtranychusurticae weresignficantlyreduced，withthelowestindexesinthe LC30 treatment group. Net reproductive rate （ R0 ），population doubling time（Dt）and average generation calendar （T） showed a decreasing trend， while circumscribed growth rate （λ） and endowed growth rate （rm ）increased. The study showed that the sublethal doses （ LC10 and LC 30 ）of bifenazate and cyflumetofen were effective in controlling the growth and reproduction of the Tetranychus urticae.

KeywordsTetranychus urticae;Acaricide;Sublethal dose;Growth;Reproduction

二斑叶螨（TetranychusurticaeKoch）隶属叶螨科（Tet-ranychidae）叶螨属（Tetranychus），为世界范围内农业上重大害螨之一，二斑叶螨寄主植物范围较为广泛，其中包括经济作物、粮食作物等近1100种植物[1。（剩余7843字）