南京市稻茬麦田杂草1次封杀化除配方的药效和安全性

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关键词：稻茬麦田；封杀化除配方；药效；安全性；南京市中图分类号： S451.22+1 ;S482.4 文献标志码：A 文章编号：1003-935X（2025）01-0050-07

Efficacy of One - Time Application Scheme for Pre - and Post - Emergent Herbicides and Their Selectivity to Wheat in Rice Stubble Wheat Fields of Nanjing

SUN Ting1，ZHANG Zichang²，WANG Jiansheng³，ZHU Axiu4，GU Tao²，WANG Ke² XUE Jing5，WU Jiawen4，WANG Hongchun² （1.Agricultural and Rural Affirs Bureau of Jiangning District，Nanjing City，Nanjing 2111Oo，China;

2.Institute of Plant Protection，Jiangsu Academy of Agricultural Sciences，Nanjing 210o14，China;

3.Plant Protection and Quarantine Station of Nanjing，Nanjing 21Ooo8，China;

4.Plant Protection and Quarantine Station of Jiangsu Province，Nanjing 21Oo36，China;

5.CollegeofLifeSciences，AnhuiNormalUniversity，Hefei23oooO，China）

Abstract：Toidentifysuitablechemicalcontrol formulationsfor weedmanagementinricestubblewheat fieldsin Nanjing，we setupfive diferent herbicides mixtures，and taked manual weeding andanuntreated groupascontrol to carryout a field plot experiment，including diflufenican·isoproturon 48% SC + mesosulfuron- methyl 30g/L OD， diflufenican·isoproturon 48% SC + pinoxaden 5% EC，flufenacet ⋅⋅ diflufenican 35% SC + flucarbazone - Na 70% （20 WG，diflufenican·isoproturon 48% SC + flucarbazone -Na 70% WG，and flufenacet·diflufenican·flurtamone 33% （204号 SC + flucarbazone-Na7O%WG.This experiment determined effects of these herbicidesmixtures on weeds and their selectivelevels towheat.Theresultsshowedthatplantcontrolefectsandfresh weightcontroleffctsoffiveherbicides mixtures mentioned above aplied once during post - emergence stage on Beckmannia syzigachne （Steud.）Fern.， Alopecurus japonicus Steud.，A.aequalis Sobol.，Geranium carolinianumL.，and Stellria media（L.）Cyr.，were all more than 93% ，and those of total weeds were more than 95% at around leaf stage of wheat，and their wheat yields were all above 424 kg/667 m2 .The tested herbicides applied once effectively controlled weeds throughout the wheat growing season inrice stubble fields，was selectivity to wheat，and demonstrated excellnt yield protection effects.

Key words：rice stubble wheat fields;one-time appication scheme for pre-and post-emergent herbicides;effcacy; selectivity; Nanjing City

杂草不仅与小麦争夺营养、光照和水分，也会加重病虫害的发生，是小麦稳产丰产的重要制约因素之一。（剩余7096字）