21%苯唑·特可分散油悬浮剂对玉米田杂草的防效及作物安全性评价  

Control efficacy of topramezone.terbuthylazine 21%OD to weeds and its safety evaluation in corn fields

作　　者：穆杰 卢慧明 韩会霏 MU Jie;LU Huiming;HAN Huifei(Shandong Kesai Agrochem Holdings Co.,Ltd.,Jinan 250101,China)

机构地区：[1]山东科赛基农控股有限公司,济南250101

出　　处：《世界农药》2023年第12期56-60,共5页World Pesticide

摘　　要：根据农药田间试验准则开展21%苯唑·特可分散油悬浮剂对玉米田狗尾草、马唐、铁苋菜、反枝苋等一年生杂草的防除效果及其对玉米安全性评价。结果表明:21%苯唑·特可分散油悬浮剂对玉米田狗尾草、马唐、铁苋菜、反枝苋均有较好的防除效果,用量为472.5~630ga.i./hm2时,药后20d,株防效均在90%以上;药后40d,株防效均在88%以上,鲜重防效均在89%以上。所有处理均显著优于对照药剂30%苯唑草酮悬浮剂和50%特丁津可分散油悬浮剂,未见对玉米产生明显药害,且具有明显的增产效果,增产率达25%以上。21%苯唑·特可分散油悬浮剂能有效防除玉米田杂草并对玉米具有较好的安全性,推荐使用量为472.5~630ga.i./hm^(2)。In this study,the control efficacy of topramezone·terbuthylazine 21%OD against annual weeds such as Setaria viridis(Linn.)Beauv.,Digitaria sanguinalis(L.)Scop.,Acalypha australis L.,and Amaranthus retroflexus L.were investigated,and their safety in corn field was evaluated.The results showed that topramezone·terbuthylazine 21%OD had good control effects on S.viridis(Linn.)Beauv.,D.sanguinalis(L.)Scop.,A.australis L.,and A.retroflexus L..At the dosage of 472.5-630 g a.i./ha,the plant efficacy were all more than 90%20 days after treatment,the plant efficacy were all more than 88%and the fresh weight efficacy were all more than 89%40 days after treatment.All treatments of topramezone·terbuthylazine 21%OD were significantly better than that of toplamezone 30%SC and terbuthylazine 50%OD.It was no obvious damage to corn,and the yield increase rates of corn were all more than 25%.Topramezone·terbuthylazine 21%OD could effectively control weeds in corn field and was safe on corn growth,and the recommended dosage was 472.5-630 g a.i./ha.

关 键 词：苯唑草酮 特丁津 玉米 杂草 防除效果 安全性 

分 类 号：TQ457[化学工程—农药化工]