冀东地区春玉米田苗后化学除草剂的减量增效复配组合优选  

Screening of Combinations of Post-emergence Herbicides with Reduced Dosage and Increased Efficiency in Spring Corn Field in Eastern Hebei Province

作　　者：李哲 赖珏丽 韩华越 马馨乐 郭倩颖 杨娟 张利辉[2] LI Zhe;LAI Jueli;HAN Huayue;MA Xinle;GUO Qianying;YANG Juan;ZHANG Lihui(Hebei Key Laboratory of Crop Stress Biology,Hebei Normal University of Science&Technology,Qinhuangdao Hebei,066004;College of Plant Protection,Hebei Agricultural University)

机构地区：[1]河北省作物逆境生物学重点实验室,河北科技师范学院,河北秦皇岛066004 [2]河北农业大学植物保护学院

出　　处：《河北科技师范学院学报》2023年第2期1-6,共6页Journal of Hebei Normal University of Science & Technology

基　　金：河北省自然科学基金项目(项目编号:C2021407005);河北省重点研发计划项目(项目编号:19226504D)。

摘　　要：为了优选适合冀东地区春玉米田苗后化学除草剂减量增效复配组合,采用茎叶喷雾处理法对玉米田常规除草剂硝磺草酮、氯氟吡氧乙酸异辛酯、烟嘧·莠去津、硝磺·莠去津、丁·硝·莠去津和助剂迈丝进行了减量增效复配田间药效试验。结果显示:施药后14 d,硝磺·莠去津3000 mL/hm^(2)+氯氟吡氧乙酸异辛酯750 mL/hm^(2)对杂草的株防效显著高于其他处理,为70.89%。施药后28 d,硝磺·莠去津3000 mL/hm^(2)+氯氟吡氧乙酸异辛酯750 mL/hm^(2)和除草剂用量减少20%+用水量3‰迈丝对杂草的株防效和鲜质量防效分别为84.01%,83.63%和90.22%,85.74%,二者间无显著差异,鲜质量防效显著高于其他喷药处理。各喷药处理对玉米安全,产量挽回损失率为36.83%~70.69%。以上结果表明,硝磺·莠去津2400 mL/hm^(2)+氯氟吡氧乙酸异辛酯600 mL/hm^(2)+用水量3‰迈丝组合可作为冀东地区春玉米田茎叶处理防除杂草剂推广使用。Combinations of post-emergence herbicides with reduced dosage and increased efficiency were screened in spring corn field in eastern Hebei Province.A field efficacy test was carried out with the stem leaf spraying method on the conventional herbicides of corn field,such as niflufenuron,cloflupyroxyacetic acid,nicosulfuron·atrazine,niflufenuron·atrazine,butyl·nitrate·atrazine,and the auxiliary GY-Tmax.The results showed that after 14 days of application,the plants control effect of 3000 mL/hm^(2) of nitrsulfone·atrazine+750 mL/hm^(2) of trifluoropyroxyacetic acid on weeds was 70.89%,which was significantly higher than those of other treatments;after 28 days of application,the plants control effect and fresh weight control effect of 3000 mL/hm^(2) of nitrsulfone·atrazine+750 mL/hm^(2) of trifluoropyroxyacetic acid and herbicide dosage reduced by 20%+water consumption of 3‰GY-Tmax on weeds were 84.01%,83.63%and 90.22%,85.74%,respectively.There was no significant difference between them,and the fresh weight control effect was significantly higher than those of other treatments.All treatments were safe for corn,and the yield recovery loss rate was 36.83%~70.69%.The combination of Nisulfuron·Atrazine 2400 mL/hm^(2)+Chlorofluoropyranoxyacetic acid 600 mL/hm^(2)+water consumption of 3‰GY-Tmax could be used as post-emergence herbicides controlling weeds in spring corn fields in eastern Hebei Province.

关 键 词：春玉米 化学除草剂 杂草 减量增效 冀东地区 

分 类 号：S451.222[农业科学—植物保护]