幾種播后苗前除草劑對小麥田日本看麥娘的防除效果

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關(guān)鍵詞：小麥田；日本看麥娘；播后苗前除草劑；防除效果；安全性中圖分類號： 文獻標(biāo)志碼：A 文章編號：1003-935X（2025）01-0024-06

Control Effects of Several Pre - Emergent Herbicides Applied after Sowing on Alopecurus japonicus in Wheat Fields

WANG Xiaolin1，ZHU Axiu2，JIA Ying3，SHI Weidong3，ZHANG Jianhua1，WU Jiawen2 YAO Kebing1 ，WANG Hongchun4 ， MIAO Kang' [1. Jiangsu Hilly Area Zhenjiang Institute of Agricultural Sciences，Zhenjiang 2124Oo，China ; 2. Jiangsu Plant Protection and Quarantine Station，Nanjing 21Oo36，China; 3.Syngenta（China）Investment Co.，Ltd，Shanghai 2OO131，China; 4.Instituteof Plant Protection，Jiangsu Academy of Agricultural Sciences，Nanjing 21Oo14，China]

Abstract：We screened several pre-emergence herbicidesappliedafter sowing to assess their eficacy in controling Alopecurus japonicusand toprovidea theoreticalbasis fortheir widespread promotion.Afield experiment was conducted toevaluate thecontrol efficacy of theseherbicidesin 2O23，included flufenacet 41% SC，flufenacet·diflufenican 35% （20 SC，diflufenican ? flufenacet 30% SC，flufenacet ?? diflufenican ?? flutamone 33% SC，pyroxasulfone 40% SC，bixlozone

36% SC，and luximax 750g/L EC.The results showed that pyroxasulfone 40% SC，cinmethylin 750g/L EC，and flufenacet ·diflufenican 35% SC had long-lasting effcts，with control efficacy remaining around 80% at 136 days after application.At28daysafter application，slightyellowing of wheat leaves wasobserved intheplots treatedwith flufenacet·diflufenican 35% SC and pyroxasulfone 40% SC，the percentage of symptomatic wheat plants was less than 10% .However，wheat resumed normal growth at 48 daysafter application.The yield measurement results indicated that the wheat yield was the highest in the plot treated with pyroxasulfone 40% SC，reaching 471.88 kg/667 m2， followed byluximax 75O g/L EC，and then flufenacet·diflufenican 35% SC.Based on the comprehensive results of control efficacy，selectivity，and wheat yield，it was recommended that pyroxasulfone 40% SC at 30 mL/667 m2，luximax 750g/L EC at 30 mL/667 m2 ，or flufenacet·diflufenican 35% SC at 95 mL/667 m2 could be screened as pre - emergent herbicide applied after sowing in the hilly areas of Jiangsu Province.

Key words：wheat;Alopecurus japonicus;pre-emergent herbicide applied after sowing;control effect;selectivity

江蘇省鎮(zhèn)江市年均種植小麥面積約5.33萬 hm2[1] ，雜草危害是長期以來威脅鎮(zhèn)江市小麥安全生產(chǎn)的重要植保難題，其中稻茬麥田的優(yōu)勢種雜草為蘭草和日本看麥娘[2]。（剩余6500字）