作　　者： ; ; ; ;

机构地区： 广东省农业科学院

出　　处： 《杂草科学》 2014年第1期115-119,共5页

摘　　要： 为明确30％氰草＆#183;莠去津悬乳剂与30％磺草＆#183;莠去津悬浮剂对玉米田杂草的防除效果以及在玉米不同叶龄期使用的安全性，开展了2个除草剂品种在玉米不同叶龄处理与90％莠去津水分散粒剂播后芽前土壤处理对田间杂草防效和产量影响的田间对比评价试验。结果表明，1575g a．i．/hm230％磺草＆#183;莠去津悬浮剂在玉米3～4叶期和6～7叶期施用、1350 g a．i．/hm230％氰草＆#183;莠去津悬乳剂在玉米3～4叶期施用对玉米安全，杂草防效好，玉米产量比清水对照增加10％以上，杂草防效和玉米产量均优于2160 g a．i．/hm290％莠去津水分散粒剂播后芽前土壤处理；1350 g a．i．/hm230％氰草＆#183;莠去津悬乳剂在玉米6～7叶期施用对玉米有药害，其杂草防效和玉米产量均不及2160 g a．i．/hm290％莠去津水分散粒剂播后芽前土壤处理。 The weed control efficacy and selectivity of the herbicide mixtures cyanazine ＆#183; atrazine 30%SE and sulcotrione ＆#183; atrazine 30%SC were compared at different growth stages of maize with the standard herbicide atrazine 90%WG applied to soil between sowing and emergence in a field experiment .Both sulcotrione ＆#183; atrazine 30%SC （1 575 g a.i./hm2 ） sprayed at the 3~7 leaf stage and cyanazine ＆#183; atrazine 30%SE （1 350 g a.i./hm2 ） at 3~4 leaf stage not only provided adequate weed control but also increased corn yield by more than 10%over a control treatment with only water .Their effects weed in control and yields increase were better than those of atrazine 90%WG applied to soil between sowing and emergence . Cyanazine＆#183; atrazine at the same dose,however,was not safe to maize at 6~7 leaf stage,and both weed control and crop yield were inferior ro those achieved with 2 160 g a.i./hm2 atrazine.

关 键 词： 氰草 莠去津 磺草 莠去津 玉米 杂草 防效 安全性

领　　域： [农业科学]