摘要
Abstract
To explore the effective control strategies for Italian Ryegrass(Lolium multiflorum)in wheat fields,this study screened the dominant single herbicides and evaluated the synergistic of their mixture with isoproturon through a systematic assessment of 13 treatments.The results showed that,for pre-emergence soil treatment,the highest control efficacy was achieved with 35%pyroxasulfone·diflufenican suspension concentrate(SC)+50%isoproturon SC,followed by 40%pyroxasulfone SC+50%isoproturon SC,40%pyroxasulfone SC,35%pyroxasulfone·diflufenican SC,and 30%diflufenican·flufenacet SC+50%isoproturon SC.The control effects at 104 days after application were 99.23%,98.10%,97.30%,96.22%and 80.23%respectively.After wheat overwintering and regreening,the highest post-emergence control efficacy was obtained with 46.5%penoxsulam·isoproturon SC+10%pinoxaden emulsifiable concentrate(EC)+50%isoproturon SC,followed by 36%bixlozone SC+50%isoproturon SC,46.5%penoxsulam·isoproturon SC+10%pinoxaden EC and other agents.The control effects at 31 days after application were 98.02%,92.22%and 80.73%respectively.In summary,for weed controls in wheat fields,pre-emergence treatments can employ herbicides such as 35%pyroxasulfone·diflufenican SC,40%pyroxasulfone SC,and 30%diflufenican·flufenacet SC in mixture with isoproturon.For post-overwintering foliar applications,mixtures of 46.5%penoxsulam·isoproturon SC+10%pinoxaden EC and 36%bixlozone SC with isoproturon can efficiently control Lolium multiflorum.These results provide a scientific basis for weed control in wheat fields.关键词
小麦田/多花黑麦草/除草剂/田间防效Key words
wheat field/italian ryegrass(Lolium multiflorum)/herbicide/field control efficacy分类
农业科技
