大葱苗期除草剂初步筛选  

Elementary Screening of Herbicides for Welsh Onion Seedling Stage

作　　者：吴仁海[1] 职倩倩[1] 苏旺苍[1] 王恒亮[1] 鲁传涛[1] 张永超[1] 

机构地区：[1]河南省农业科学院植物保护研究所/河南省农作物病虫害防治重点实验室,河南郑州450002

出　　处：《河南农业科学》2014年第7期93-97,共5页Journal of Henan Agricultural Sciences

基　　金：公益性行业(农业)科研专项(201203098);NSFC-河南省人才培养联合基金项目(U1204321)

摘　　要：为了探索大葱田安全高效的除草技术,推进大葱规模化简易生产,在室内条件下对大葱除草剂进行了筛选。结果表明,330g/L二甲戊乐灵495（推荐剂量）～1 485g/hm^2在药后18d和27d对禾本科杂草的防效较好,药效达到4级;30%辛酰溴苯腈375g/hm^2（推荐剂量）在药后18d和27d对阔叶杂草的防效较好,药效达到3级,且它们对大葱基本无药害,可在大葱田推荐使用。50%乙草胺、960g/L精异丙甲草胺、480g/L灭草松、50g/L精喹禾灵、15%精吡氟禾草灵虽对部分杂草有较好防效,但会对葱苗产生轻度至中度药害,应限制使用。大葱对25%扑草净、90%莠去津、200g/L氯氟吡氧乙酸、50%异丙隆较敏感,在大葱田严禁使用这4种除草剂。In order to find a safe and efficient weeding technology in welsh onion field and promote welsh onion simple scale production,this study screened 11 herbicides to investigate their safety to welsh onion and control effects on weeds in greenhouse.The results revealed that 495（recommended dose）-1 485g/ha of 330g/L pendimethalin demonstrated better effects on grass weeds at 18 dand 27d after drug control,with control effect reaching 4level,and the control effect of 30% bromoxynil octanoate with 375g/ha（recommended dose）reached 3level on broadleaf weeds at 18 d and 27d after drug control,which both showed almost no injury to the onion,deserving recommendation.Although 50% acetochlor,960g/L s-metolachior,480g/L bentazon,50g/L quizalofop-P-ethyl and 15% fluazifop-P-butyl showed good effects on several weeds,they could cause mild or moderate damage to the onion,thus these herbicides should be restricted in welsh onion field.In contrast,the welsh onion was fairly sensitive to 25% prometryne,90% atrazine,200g/L fluroxypyr and 50% isoproturon,therefore these herbicides should be prohibited in welsh onion field.

关 键 词：大葱 除草剂 药害 杂草 药效 

分 类 号：S482.4[农业科学—农药学]