农药学学报2026，Vol.28Issue(2)：321-331,11.DOI:10.16801/j.issn.1008-7303.2026.0024
不同土壤处理除草剂混配对大豆-玉米间作田杂草的防效及安全性评价
Evaluation of weed control efficacy and safety in soybean-maize intercropping fields with different pre-emergent herbicide combinations
摘要
Abstract
To explore the weed control efficacy and crop safety of different pre-emergent herbicide combinations in soybean and maize intercropping fields,seven herbicide mixture combinations were screened through pot experiments and field efficacy trials.The combinations include pyroxasulfone+metribuzin/thifensulfuron-methyl/flumioxazin/flumetsulam/and S-metolachlor+thifensulfuron-methyl/flumioxazin/flumetsulam.The results of the pot experiment showed that the seven herbicide combinations exhibited no significant inhibitory effects on the emergence or growth of soybean and maize,nor did they cause irreversible phytotoxicity.Field trials showed that at 20 days after herbicide application,no herbicide injury was observed in soybeans or maize.By 50 days,the combinations of 40%pyroxasulfone SC+480 g/L metribuzin SC(180+432 g a.i./hm2),40%pyroxasulfone SC+80%flumetsulam WG(180+60 g a.i./hm2),and 960 g/L S-metolachlor EC+80%flumetsulam WG(1296+60 g a.i./hm2)provided 82.21%-89.28%control based on the total weed counts and 89.42%-91.11%control based on the total fresh weight.The overall control efficacy of these three combinations on weeds is better than that of other treatment groups.They are recommended for pre-emergence weed control in soybean and maize intercropping systems,particularly in fields infested with a mixture of gramineous weeds,broad-leaved weeds,and sedge weeds.Compared to control,all herbicide treatments increased the yield of soybean and maize by 11.23%-22.91%and 10.41%-20.25%,respectively.关键词
土壤处理除草剂/混配/大豆-玉米间作/防除效果/安全性评价Key words
pre-emergent herbicide/compound/soybean-maize strip intercropping/control efficacy/safety evaluation分类
农业科技引用本文复制引用
黄运友,刘磊,姜宇星,肖清君,张亚,刘双清..不同土壤处理除草剂混配对大豆-玉米间作田杂草的防效及安全性评价[J].农药学学报,2026,28(2):321-331,11.基金项目
湖南省农业农村厅大豆玉米带状复合种植"揭榜挂帅"项目(湘财[2023]157号). Supported by The Department of Agricultural and Rural Affairs of Hunan Province"challenge and leader"project for soybean-maize strip intercropping(xiangcai[2023]No.157). （湘财[2023]157号）
