啶磺草胺与双氟磺草胺协同防除冬小麦田杂草效果及对小麦产量的影响  

Cooperative Control Effect of Pyroxsulam with Florasulam on Weeds and Influence on the Winter Wheat Yield

作　　者：罗思荃 曹轩 刘乐 柏浩东 柏振东 金晨钟[1] 李祖任[1] LUO Si-quan;CAO Xuan;LIU Le;BAI Hao-dong;BAI Zhen-dong;JIN Chen-zhong;LI Zu-ren(Hunan Provincial Key Laboratory for Biology and Control of Weeds,Hunan University of Humanities,Science and Technology,Loudi 417000,China;Hunan Xinchangshan Agricultural Development Co. Ltd.,Changde 415900,China)

机构地区：[1]杂草生物学及安全防控湖南省重点实验室/湖南人文科技学院,湖南娄底417000 [2]湖南新长山农业发展股份有限公司,湖南常德415900

出　　处：《杂草学报》2022年第1期69-76,共8页Journal of Weed Science

基　　金：湖南省农业科技创新项目(编号:2019TD03、2020CX58、2020CX60)。

摘　　要：采用室内生物测定和田间小区药效试验,评价啶磺草胺和双氟磺草胺的联合作用类型及其复配制剂对小麦田一年生杂草的防治效果和对小麦产量的影响。结果表明,啶磺草胺与双氟磺草胺配比为3∶1时对车轴草、荠菜等阔叶类杂草表现为加成作用。4%啶磺草胺·双氟磺草胺可分散油悬浮剂推荐施药时期为一年生杂草2~5叶期,田间推荐施用制剂量为25~30 mL/667 m^(2),均匀茎叶喷雾,药后30 d杂草鲜重防效为91.98%~93.82%,小麦产量较空白对照增加12.61%~15.05%。4%啶磺草胺·双氟磺草胺可分散油悬浮剂可用于防除冬小麦田阔叶类杂草。Laboratory bioassays test and field efficacy trial were conducted to evaluate the combined action types of acetaminophen and difluorosachlor and the control effect of their compound herbicides on annual weeds in wheat field.Meanwhile,influence of the compound herbicides on wheat yield also was determinated.The results showed that the application of pyroxsulam and florasulam had an additive action on the control of broadleaf weeds such as Trifolium,Capsella bursa-pastoris etc.under the ratio of 3∶1.The recommended application period of pyroxsulam·florasulam 4%OD with the optimal dosage of 25~30 mL/667m^(2) was 2~5 leaves stage of annual weeds in winter wheat fields.At 30 days after application,the control efficacy based on fresh weight on annual weeds in fields was 91.98%~93.82%,whose wheat yield was higher 12.61%~15.05%than that of the blank control.This study indicated that pyroxsulam·florasulam 4%OD could control the broadleaf weeds in winter wheat fields.

关 键 词：啶磺草胺 双氟磺草胺 复配除草剂 冬小麦 产量 

分 类 号：S451.221[农业科学—植物保护]