咪草烟防除苜蓿田杂草技术初探  

Preliminary Studies on Weed Control in Alfalfa with Imazethapyr

作　　者：王玉松[1] 杜景元[2] 宋瑞利[2] 张英彪[2] 苏州[2] 

机构地区：[1]河北省黄骅市农业局,黄骅061100 [2]沈阳化工研究院,沈阳110021

出　　处：《农药》2004年第12期569-570,共2页Agrochemicals

摘　　要：咪草烟防除苜蓿田杂草,经试验咪草烟用作苜蓿播后苗前土壤处理,对苜蓿药害严重。苗后早期处理使用剂量在1500、1800、2100ml/hm23个剂量,对苜蓿田反枝苋、稗草、马唐、马齿苋等单双子叶杂草的总防效分别为76%、81%、84%,且在规定剂量内对苜蓿安全。另外,咪草烟对苜蓿田其它主要杂草-播娘蒿也有较好的防效。Imazethapyr 5% SC controls weeds in alfalfa, but this experiment indicates that imazethapyr applied to thesoil after planting and before emergence causes significant crop injury. Early postemergence treatments at 1500, 1800,or 2100 ml/ha controlled broadleaf and grass weeds including redroot pigweed (Amaranthus retroflexus), barnyardgrass(Echinochloa crusgalli), large crabgrass (Digitaria sanguinalis), and purslane (Portulaca oleracea) from 76 to 84%.Recommended rates of imazethapyr applied postemergence did not injure alfalfa. In addition, imazethapyr providedrelatively good control of other important weeds such as Descurainia sophia.

关 键 词：咪草烟 苜蓿 除草 

分 类 号：S451.22[农业科学—植物保护]