冀东地区春玉米田苗前土壤封闭除草剂减量增效复配组合优选  

Optimization Combinations of Pre-emergence Herbicides with Minimized Dosages and Increased Efficacy in Spring Corn Field in Eastern Hebei Province

作　　者：韩华越 李哲 马馨乐 赖珏丽 杨娟 HAN Huayue;LI Zhe;MA Xinle;LAI Jueli;YANG Juan(Hebei Key Laboratory of Crop Stress Biology/College of Agronomy and Biotechnology,Hebei Normal University of Science and Technology,Qinhuangdao Hebei,066004,China)

机构地区：[1]河北省作物逆境生物学重点实验室,河北科技师范学院农学与生物技术学院,河北秦皇岛066004

出　　处：《河北科技师范学院学报》2024年第2期15-20,共6页Journal of Hebei Normal University of Science & Technology

基　　金：河北省自然科学基金资助项目(项目编号:C2021407005);省属高校基本科研业务费专项项目(项目编号:2023JK12)。

摘　　要：为了优选适合冀东地区春玉米田苗前土壤封闭除草剂的减施增效复配组合,采用土壤喷雾的方式对苗前处理除草剂扑草净、乙草胺、二甲戊灵、莠去津、噻酮磺隆·异噁唑草酮进行了减量增效复配田间药效试验。结果表明,施药后第28天,扑草净1125 g/hm^(2)+乙草胺1125 mL/hm^(2)的复配组合对杂草的株防效最高,为84.20%;其次为二甲戊灵1500 mL/hm^(2)+莠去津1125 mL/hm^(2)和噻酮磺隆·异噁唑草酮375 mL/hm^(2)+用水量3‰“迈丝”,对杂草的株防效分别为80.80%和80.70%,3个处理间防效无显著差异。施药后第42天,扑草净1125 g/hm^(2)+乙草胺1125 mL/hm^(2)复配组合对杂草的株防效和鲜质量防效最高,分别为91.35%和95.88%,鲜质量防效显著高于其他施药处理。扑草净1125 g/hm^(2)+乙草胺1125 mL/hm^(2)的减量复配组合可作为冀东地区春玉米田苗前土壤封闭化学除草推广使用。Combinations of pre-emergence herbicides with minimized dosages and increased efficacy were optimized in spring corn field in eastern Hebei Province.A field efficacy test was carried out with the soil spraying method on the conventional herbicides of corn field,such as prometryn,acetochlor,pendimethalin,atrazine,and thiencarbazone–methyl·isoxaflutole.The results showed that after 28 days of application,the plants control effect of the combination of 1125 g/hm^(2) of prometryn+1125 mL/hm^(2) of acetochlor on weeds was the best,which was 84.20%,followed by 1500 mL/hm^(2) of pendimethalin+1125 mL/hm^(2) of atrazine and 375 mL/hm^(2) of thiencarbazone–methyl·isoxaflutole+water consumption of 3‰GY-Tmax,the plants control effect of these two treatments were 80.80%and 80.70%,respectively.There was no significant difference in the plants control effect of among the three treatments.After 42 days of application,the plants control effect and fresh weight control effect of 1125 g/hm^(2) of prometryn+1125 mL/hm^(2) of acetochlor on weeds were the best,which were 91.35%and 95.88%,respectively,and the fresh weight control effect was significantly higher than that of other spraying herbicides treatments.The combination of 1125 g/hm^(2) of prometryn+1125 mL/hm^(2) of acetochlor could be widely used as pre-emergence herbicides on weed control in spring corn field in eastern Hebei Province.

关 键 词：春玉米 土壤封闭除草剂 减量增效 冀东地区 

分 类 号：S451.222[农业科学—植物保护]