【摘要】 [目的]筛选适于东北裸燕麦田使用的除草剂。[方法]以仲丁灵、丙炔氟草胺、苯嘧磺草胺为土壤处理剂,2,4-滴丁酯、硝磺草酮、苯嘧磺草胺为茎叶处理剂,评价不同剂量下对裸燕麦田杂草的防效和对裸燕麦的安全性。[结果]供试的几种除草剂均对裸燕麦产生了一定药害,但生长后期药害症状基本消失。除仲丁灵外,其他处理对杂草的防效均超过80%。50%丙炔氟草胺WP 40 g a.i./hm2、70%苯嘧磺草胺WG 33.3 g a.i./hm2土壤处理和10%硝磺草酮SC 100 g a.i./hm2茎叶处理产量和人工除草对照间没有显著性差异。[结论]上述3种处理具有在裸燕麦田的应用价值。更多还原

【Abstract】 [Aims]This study aims to screen out a safe chemical weed control method in naked oat fields.[Methods]Weed control efficacy and crop safety of three pre-emergence herbicides(butralin,flumioxazin,saflufenacil) and three postemergence herbicides(mesotrione,2,4-D butylate,saflufenacil) at 3 dosage levels were evaluated.[Results]Except for butralin,all the other herbicides provided good efficacy(above 80%) against weeds.All the herbicides caused some injury to the naked oat,but the injury symptoms disappeared in the later growth stages.Two pre-emergence treatments flumioxazin 50%WP at the rate of 40 g a.i./ha,saflufenacil 70%WG at the rate of 33.3 g a.i./ha and one post-emergence treatment mesotrione 10%SC at 100 g a.i./ha performed the best according to the grain yield.[Conclusions]These treatments above have the potential to be applied in the naked oat fields.更多还原