150g/L 氟草·矾吡草唑悬浮剂对大豆田一年生杂草 的田间药效评价

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关键词：氟草·矾吡草唑悬浮剂;大豆田；一年生杂草；防效;产量;安全性中图分类号： S482.4+0 文献标志码：A 文章编号：1003-935X（2026）01-0084-07

Efficacy Evaluation of Flumioxazin ·Pyroxasulfone 150g/L SC on Annual Weeds in Soybean Fields

GUO Xiaotong，GUO Yulian， WANG Yu，LUO Chan， CONG Keqiang（Instituteof Plant Protection，Heilongjiang Academy of Agricultural Sciences，Harbin15Oo86，China）

Abstract：To clarify the control effect of flufenacet ⋅⋅ pyroxasulfone 150g/L SC on annual weeds in soybean fields and its safetyto soybeans，afieldploteficacytestwasconductedat Heilongjiang AcademyofAgricultural Sciences in2023.The study measuredtheherbicide'scontrol effctsonannual weeds，soybeanyield，andoccurrenceof pytotoxicity.Teresults showed that 40 days after application，flufenacet·pyroxasulfone 150g/L SC suspension concentrate at a dosage of 975 ～ 1 275mL/hm2 achieved plant control effects of 84.2%～92.4% and fresh weight control effects of 87.7% ～95. 3% （204 against total weeds.The herbicide was selectivity to soybeans at the dosage of 975～2 250mL/hm2 ，with a yield increase rateof 130.5%～150.2% compared with blank control，and a yield change rate of -8.9%～-1.1% compared with manual weeding.In conclusion，flufenacet ⋅⋅ pyroxasulfone 150g/L SC could be used for soil spray treatment in soybean fieldsaftersowingand beforeseedling emergence.Itisselectivity to soybeansandrequiresonlyone application throughout the entire growth period. The suitable application dosage is 975～1275mL/hm2 （corresponding to an active ingredient content of 146.25～191.25g/hm2 ）

Key words： flumioxazin ⋅⋅ pyroxasulfone 150g/L SC;soybean field;annual weed;control efect;yield;selectivity

大豆是一种重要的经济作物和油料作物，在国家粮食安全及农民经济收入中占有重要地位[1-2]。（剩余8227字）