5种除草剂防除旱直播稻田杂草比较试验.pdf.pdf

48...——杂草科学2012年第30卷第1期赵海英,卢兆成,乔利,[J].杂草科学,2012,30(1):48—505种除草剂防除旱直播稻田杂草比较试验赵海英,卢兆成,乔(,河南信阳464000;,杨黎明菏南省信阳市罗山县植保站,河南罗山464200)摘要:42%草·丁草胺ECI500mL/hm对鳢肠的防效为82%,对禾本科杂草、大多数阔叶杂草及莎草均有良好的防除效果,防效均达100%;33%二甲戊灵EC2250mL/%,对禾本科杂草和部分阔叶杂草及莎草的防效均在86%~100%之间;30%苄·丁wP2250g/hm和35%苄嘧·丙草胺WP900g/hm对阔叶杂草和莎草科杂草的防效较好,但对禾本科杂草的防效较差;30%丙草胺EC1800mL/hm对稻田多种杂草的防效均低于63%。关键词:禾本科杂草;阔叶杂草;莎草;防效中图分类号:$451文献标志码:A文章编号:1003—935X(2012)01—0048—parativeTestofWeedControlEfficacyofFiveHerbicidesinDryDirect-,LUZhao—cheng,QiaoLi,YANGLi—ming(,Xinyang464000,China;,Luoshan464200,China)Abstract:Thisfieldexperimentselectedfiveherbicidestoapplyinthedrydirect—+oxadiazon42%EC1500mL/hmwas82%tocontrolYerbadetajoHerb,100%tocontrolpoaeeaeweeds,mostbroadleafweedsandsedges;controllingefficiencyofphendimethalin33%%%~100%tocontrolpoaceaeweeds,somebroadleafweedsandsedges;controllingefficiencyofbutachlor+bensuffuronmethyl30%WP2250g/hmandpretilachlor+bensuffuron35%WP900g/;controllingefficiencyofpretilaehlor30%w-p1800g/hmwaslowerthan63%tomostoftheweedsvarie—tiesinthericedirect—seedi