25%硝磺草酮·莠去津悬浮剂及混剂对玉米田杂草的防除效果  

Efficacy of Formulated Mesotrione·Atrazine 25% SC Alone and in Mixture with Metolachlor in Maize Fields

作　　者：太一梅[1] 李志敏[1] 刘萍 陈艳秋 李卫 

机构地区：[1]云南省昆明市植保植检站,云南昆明650034 [2]云南省安宁市土肥植保站,云南安宁650300

出　　处：《杂草科学》2014年第4期62-65,共4页Weed Science

摘　　要：为明确25％硝磺草酮·莠去津悬浮剂对玉米地杂草的防除效果和作物安全性，于玉米播后苗前进行土壤封闭处理、杂草3～5叶时进行杂草茎叶处理试验。结果表明：25％硝磺草酮·莠去津悬浮剂与96％精异丙甲草胺乳油混合进行玉米播后苗前处理，药后33 d 株防效达91．95％～94．01％，药后55 d 鲜质量防效达97．97％～99．45％；25％硝磺草酮·莠去津悬浮剂于杂草3～5叶时进行茎叶处理，作用速度较快，药后7 d株防效达到97．37％，药后42 d鲜质量防效为98．70％。The efficacy and maize selectivity of 25% mesotrione· atrazine SC was determined experimentally in a maize field after its application as a crop preemergence treatment and postemergence treatment at the 3-5 leaf growth stage of weeds.Efficacy based on weed density of 25% mesotrione · atrazine SC in mixture with 96% S-metolachlor EC was 91.95%-94.01% at 33 days after treatment （ DAT） and 98% -99% based on weed＇s fresh weight at 55 DAT, postemergence application of 25%mesotrione· atrazine SC provided 97.37%control （based on weed density） at 7 DAT days and 99%control based on biomass at 42 DAT.

关 键 词：25%硝磺草酮·莠去津悬浮剂 玉米田 杂草 防除 

分 类 号：S451[农业科学—植物保护]