摘要
为明确江淮地区旱直播稻田杂草发生情况及马唐的防控技术,本文于2023—2024年采用倒置“W”九点取样法对江淮部分地区6个市32个乡镇共320块稻田进行杂草调查,同时采用整株生物测定法测定8种土壤处理除草剂对抗性(抗噁唑酰草胺)和敏感马唐种群的活性。江淮地区旱直播稻田共调查到杂草57种,隶属于25科,其中禾本科和菊科杂草居多,分别占15.79%、12.28%;调查地区以马唐、稗为主构成的杂草群落,优势杂草有马唐、稗、鳢肠和铁苋菜;淮安市、滁州市和南通市旱直播稻田杂草群落的多样性与复杂性居高;扬州市与泰州市、盐城市与滁州市的杂草群落相似;8种土壤处理除草剂对抗性和敏感马唐种群均具有较好的除草活性,其中仲丁灵、二甲戊灵对马唐的防除效果最佳,对抗性和敏感马唐种群的GR 90值分别为200.61、190.35、98.96、91.31 g(a.i.)/hm^(2)。马唐、稗、鳢肠、铁苋菜是江淮旱直播稻田的优势杂草;旱直播稻田主要以马唐、稗为主构成的杂草群落;扬州市与泰州市、盐城市与滁州市旱直播稻田杂草群落相似;8种除草剂对抗性和敏感马唐种群均具有较好的除草活性。
In order to clarify the occurrence of weeds in dry direct-seeding rice fields in Jianghuai region and the precventive and control technology of Digitaria sanguinalis.From 2023 to 2024,the inverted W nine-point sampling method was used to investigate weeds in 320 fields in 32 townships of 6 cities in Jianghuai region.At the same time,the whole plant bioassay method was used to determine the activity of 8 pre-emergence herbicides against resistant(resistance to metamifop,the same below)and sensitive D.sanguinalis populations.A total of 57 species of weeds were investigated in the dry direct-seeding rice fields in Jianghuai region,belonging to 25 families,of which Gramineae and Asteraceae were the majority,accounting for 15.79%and 12.28%respectively.The weed community in the survey area was mainly composed of D.sanguinalis and Echinochloa crus-galli.The dominant weeds were D.sanguinalis,E.crus-galli,Eclipta prostrata,and Acalypha australis.The diversity and complexity of weed communities in dry direct-seeding rice fields in Huaian,Chuzhou and Nantong were high.The weed communities in Yangzhou and Taizhou,Yancheng and Chuzhou were similar.Eight kinds of pre-emergence herbicides had good herbicidal activities against resistant and sensitive populations of D.sanguinalis,and the best control effect of butralin and pendimethalin on D.sanguinalis.The GR_(90) values of resistant and sensitive populations of D.sanguinalis were 200.61,190.35,98.96,91.31 g(a.i.)/hm^(2) respectively.D.sanguinalis,E.crus-galli,E.prostrata,A.australis were the dominant weeds in Jianghuai dry direct-seeding rice fields.The weed community mainly composed of D.sanguinalis and E.crus-galli in dry direct-seeding rice fields.The weed communities in dry direct-seeding rice fields in Yangzhou and Taizhou,Yancheng and Chuzhou were similar.The eight herbicides had good herbicidal activities against resistant and sensitive populations of D.sanguinalis.
作者
杨飞
王梦杰
李昂
蒋丽琳
熊浩钧
王慧
张立磊
毕亚玲
YANG Fei;WANG Mengjie;LI Ang;JIANG Lilin;XIONG Haojun;WANG Hui;ZHANG Lilei;BI Yaling(College of Resource and Environment,Anhui Science and Technology University,Fengyang 233100,China;College of Agriculture,Anhui Science and Technology University,Fengyang 233100,China;Anhui WanKen Seed Industry Co.,Ltd.,Hefei 230031,China)
出处
《安徽科技学院学报》
2025年第1期26-37,共12页
Journal of Anhui Science and Technology University
基金
安徽省科技重大专项(202203a06020016)
安徽省大学生创新创业训练计划项目(S202310879187)。
关键词
旱直播稻田
杂草种
优势种
马唐
杂草群落
除草剂
dry direct-seeding rice fields
weed species
dominant species
Digitaria sanguinalis
weed communities
herbicide
