不同除草剂对烟田主要杂草的室内毒力及田间防效

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中图分类号：S572；S482.4 文献标识码：A文章编号：1007-5119（2025）03-0081-08

Indoor Toxicity and Field Control Effect of Different Herbicides to Major Weeds in Tobacco Fields

LIU Dongyang1， WANG Jie²， DENG Quan1， JIANG Lianqiang1， FENG Huaqi2*， HUANG Bin2* （1.Liangshanrachoficanbaccooanyichango，iana;2.Itteofbacoesearche Academy of Agricultural Sciences， Qingdao 266101， China）

Abstract：Toscreen eficientandsafe herbicides against majrharmful weeds intobaccofields，indortoxicityadfieldeffectof 16 commonpre-/post-sedlingherbicidesweredetectedonthe gramineous weeds，broad-leavedspeciesandsedgefamilybythetestsof seed germination，indoortoxicity，andfieldcontrol.Theresultsshowedthattheinhibitionratesofoxyfluorfen-metolachlorpendimethalin and S. -metolachlorranged 45.7%-73.5% on seed germination of the tested weeds，yet with serious phytotoxicity of oxyfluorfen-metolachlor-pendimethalin to tobacco. S. -metolachlor， napropamide，metolachlor，and clomazone-metolachlor were recommendedtousebeforesedlingemergence，withightoxicitytograss weedswhilenomtotobacco，andthefieldfrsha control effect reaching 83.20%92.57% .Thepost-seedling herbicides rimsulfuron-quizalofop-P-ethyl， rimsulfuron-haloxyfop-Pmethyl，and rimsulfuron-clethodim，ranged their ED50 for gramineous weeds as 56.0-264.6，65.6-143.1，and 105.8-241.6g/hm2 respectively， while for broad-leaved as 172.7-303.8， 22.5-209.1， and 143.9-267.8g/hm2 ，respectively. They also exhibited field fresh mass control effects of 86.73%92.82% indicating better weed control effect and no harm， thus were recommended for the control of grasand broad-leavedweedsintobacofields.Theresearch mightlayafoundationfor theprecisecontrolofweedsandrationaluse ofherbicides in tobacco fields.

Keywords：weeds intobacco fields; herbicides; indoor toxicity;seed germination inhibition;fieldcontrol effect

烟草是一种特殊的叶用经济作物，在我国税收来源中占据重要地位[1]。（剩余9686字）