33%喹禾糠酯·灭草松乳油对大豆田一年生杂草的防除效果  

Control Efficacy of 33% Quizalofop-P-Tefuryl·Bentazone EC on Annual Weeds in Soybean Field

作　　者：郭小桐 王宇[1] 罗婵[1] 丛克强[1] 郭玉莲[1] GUO Xiaotong;WANG Yu;LUO Chan;CONG Keqiang;GUO Yulian(Institute of Plant Protection,Heilongjiang Academy of Agricultural Sciences,Harbin 150086,China)

机构地区：[1]黑龙江省农业科学院植物保护研究所,黑龙江哈尔滨150086

出　　处：《黑龙江农业科学》2024年第12期29-34,共6页Heilongjiang Agricultural Sciences

基　　金：黑龙江省农业科技创新跨越工程农业关键技术科技创新重点攻关项目(CX23GG14)。

摘　　要：为了明确茎叶除草剂33%喹禾糠酯·灭草松乳油在不同剂量处理下对大豆田一年生杂草的防效,利用随机区组方法开展田间小区试验。结果表明,33%喹禾糠酯·灭草松乳油在制剂用量1500 mL·hm^(-2)以上对大豆田稗草、藜、本氏蓼、龙葵、苘麻等有较好的防效。施药后30 d,对大豆田杂草总的株防效及鲜重防效分别为85.5%~97.7%和89.3%~99.2%,且各个剂量处理下大豆均未出现药害症状。产量测定结果表明,33%喹禾糠酯·灭草松乳油各处理区与空白对照相比均增产显著,增产率为187.5%~216.9%,说明该药剂对大豆安全的同时对杂草具有较好的防效。适宜的33%喹禾糠酯·灭草松乳油施药剂量为1500~1800 mL·hm^(-2)(即有效成分量495.0~594.0 g·hm^(-2))。In order to confirm the control effect of stems-leaves spraying herbicide 33%quizalofop-P-tefuryl·bentazone EC on annual weeds in soybean field under different treatments,the field trials were conducted using randomized block method.The results denoted that 33%quizalofop-P-tefuryl·bentazone EC had a better control effect on the annual weeds Echinochloa crus-galli L.,Chenopodium album L.,Persicaria bungeana(Turcz.)Nakai ex T.Mori,Solanum nigrum L.and Abutilon theophrasti Medikus in soybean field when the dose was more than 1500 mL·ha^(-1).The plant control efficacy and fresh weight control efficacy on the total weed were respectively 85.5%-97.7%and 89.3%-99.2%after application 30 days,and there were no phytotoxicity to soybean under each treatment.The results of yield measurement indicated that the yield increase of 33%quizalofop-P-tefuryl·bentazone EC in each treatment was significantly increased compared with the blank control,and the incremental production rates was 187.5%-216.9%.And it showed that 33%quizalofop-P-tefuryl·bentazone EC was safe for soybean and had better control effect on weeds.The appropriate dose is 1500-1800 mL·ha^(-1)(the effective component of 495.0-594.0 g·ha^(-1)).

关 键 词：大豆 喹禾糠酯·灭草松 杂草防效 产量 

分 类 号：S451.224[农业科学—植物保护]