20%苯嘧磺草胺悬浮剂对高粱田一年生阔叶杂草的防效研究  

Control Effect of 20%Saflufenacil Suspension Concentrate on Annual Broadleaf Weeds in Sorghum Field

作　　者：宋伟丰[1] SONG Weifeng(Institute of Plant Protection,Heilongjiang Academy of Agricultural Sciences,Harbin 150086)

机构地区：[1]黑龙江省农业科学院植物保护研究所,哈尔滨150086

出　　处：《中国农学通报》2023年第14期110-114,共5页Chinese Agricultural Science Bulletin

摘　　要：高粱田的阔叶杂草对除草剂的抗性日趋严重,而能够用于高粱田的除草剂品种有限,导致阔叶杂草的防除比较困难,高粱的产量也受到了巨大影响。因此,生产中迫切需要筛选出对抗性阔叶杂草防效较好的除草剂。试验探讨了不同剂量20%苯嘧磺草胺悬浮剂对高粱田阔叶杂草苯氏蓼、反枝苋和藜的防效。结果表明,中高剂量(60、90 g a.i./hm^(2))20%苯嘧磺草胺悬浮剂对高粱田阔叶杂草防除效果较好,对阔叶杂草的鲜重防效最高可达97.75%,持效期可达30 d左右,并且对高粱安全,不影响产量,具有减施增效的特点。该试验结果能够为高粱田阔叶杂草的合理防除提供理论依据。The resistance of broadleaf weeds in sorghum field to herbicides is becoming increasingly serious,and the limited varieties of herbicides that can be used in sorghum field make it difficult to control broadleaf weeds,and the yield of sorghum has been greatly affected.Therefore,there is an urgent need to screen out herbicides with good control effect on resistant broadleaf weeds in sorghum production.This experiment discussed the control effect of different dosages of 20%saflufenacil suspension concentrate on broadleaf weeds in sorghum field,such as Polygonum bungeanum Turcz.,Amaranthus retroflexus L.and Chenopodium album L..The results showed that the medium and high dosages(60,90 g a.i./hm^(2))of 20%saflufenacil herbicide suspension concentrate had good control effect on broadleaf weeds in sorghum field.The maximum control effect on the fresh weight of broadleaf weeds could reach 97.75%,and the duration of the effect could be about 30 days.In addition,the herbicide was safe for sorghum,did not affect the yield,and had the characteristics of reducing application and increasing efficiency.The experiment results can provide a theoretical basis for the rational control of broadleaf weeds in sorghum fields.

关 键 词：高粱田 苯嘧磺草胺 株防效 鲜重防效 产量 

分 类 号：S451.2[农业科学—植物保护]