2025年大豆病蟲害防控技術(shù)方案

2025-03-05 09:27:32 來源:全國農(nóng)技推廣中心 閱讀量:4947 評論

  據(jù)全國農(nóng)技中心預測,2025年全國大豆病蟲害總體中等發(fā)生,發(fā)生面積1.35億畝次,重于上年。其中,大豆根腐病、大豆食心蟲在東北春大豆區(qū),甜菜夜蛾在黃淮海大豆玉米復合種植區(qū),煙粉虱在黃淮南部偏重發(fā)生。為做好2025年大豆病蟲害防控工作,全國農(nóng)技中心制定本方案。
 
  防控目標
 
  病蟲危害損失率控制在5%以內(nèi),堅持防病蟲提單產(chǎn)和品質(zhì)并舉,在大豆主產(chǎn)區(qū)及帶狀復合種植區(qū)加強綠色防控與統(tǒng)防統(tǒng)治融合推進,保障大豆生產(chǎn)和質(zhì)量安全。
 
  防控策略
 
  堅持預防為主、綜合防治的方針,合理選用抗(耐)性品種,加強種子處理、健康栽培,綜合應用農(nóng)業(yè)防治、生態(tài)調(diào)控、理化誘控、生物防治、科學用藥等技術(shù)措施,推進大面積單產(chǎn)提升。
 
  防控對象
 
  (一)北方春大豆區(qū)
 
  重點防控根腐病、胞囊線蟲病、大豆食心蟲、大豆蚜蟲,兼顧細菌性斑點病、菌核病、霜霉病、灰斑病、豆莢螟、紅蜘蛛、棉鈴蟲、苜蓿夜蛾、大豆蕾癭蚊及葉甲、地下害蟲等。
 
  (二)黃淮夏大豆區(qū)
 
  重點防控根腐病、病毒病、炭疽病、甜菜夜蛾、點蜂緣蝽、煙粉虱,兼顧擬莖點種腐(莖枯)病、地下害蟲、棉鈴蟲、大豆食心蟲、豆莢螟、大豆蚜蟲、蝸牛等。
 
  (三)南方多作大豆區(qū)
 
  重點防控根腐病、銹病、病毒病、炭疽病、斜紋夜蛾、豆莢螟、豆稈黑潛蠅,兼顧甜菜夜蛾、豆卷葉螟、高隆象、點蜂緣蝽、稻綠蝽、地下害蟲等。
 
  防控措施
 
  (一)播種期。合理輪作,避免低地溫早播。選用抗(耐)病蟲品種,篩查精選優(yōu)質(zhì)種子,并進行藥劑處理。防治地下害蟲和葉甲、大豆蚜等苗期害蟲可選用含有噻蟲嗪等成分的種子處理劑,蠐螬等地下害蟲重發(fā)區(qū)可選用吡蟲啉或金龜子綠僵菌等顆粒劑撒施或種肥同播。防治大豆根腐病、胞囊線蟲病等根部病害可選用含有精甲·咯菌腈、吡唑醚菌酯、甲氨基阿維菌素苯甲酸鹽等成分的種子處理劑。
 
  (二)苗期至分枝期。食葉類害蟲可選用氯蟲苯甲酰胺等噴霧防治。刺吸類害蟲可選用高氯·吡蟲啉、噻蟲·高氯氟、聯(lián)苯·氟啶蟲酰胺等化學藥劑,或苦參堿、阿維菌素等生物農(nóng)藥噴霧。防治病毒病需及時防治刺吸類害蟲,阻斷其傳播病毒,可結(jié)合噴施氨基寡糖素等植物誘抗劑進行預防。大面積連片田塊可結(jié)合使用色板、燈光誘殺等物理防控技術(shù),監(jiān)測并防控煙粉虱、金龜子和鱗翅目等害蟲成蟲。
 
  (三)開花至鼓粒期。發(fā)病初期可噴施唑醚·氟環(huán)唑、苯甲·嘧菌酯、丙環(huán)·嘧菌酯、氟硅唑等防治銹病、莖枯病、炭疽病和菌核病,噴施唑醚·烯酰嗎啉、氟菌·霜霉威等防治霜霉病,噴施春雷·王銅、噻唑鋅、噻霉酮等防治細菌性斑點病,同時噴施葉面肥、生長調(diào)節(jié)劑、誘抗劑等,強健植株,預防早衰。開花結(jié)莢初期重點防控點蜂緣蝽等刺吸式害蟲,選用聚集信息素誘捕,并噴施噻蟲嗪、噻嗪酮等藥劑,同時兼治其它食葉害蟲。結(jié)莢鼓粒期重點防控大豆食心蟲、豆莢螟等蛀莢害蟲,可選用性誘劑誘殺成蟲;釋放赤眼蜂滅卵;選用蘇云金桿菌、氯蟲苯甲酰胺、高效氯氟氰菊酯等殺蟲劑防治初孵幼蟲,同時兼治其他害蟲;老熟幼蟲開始脫莢入土前,選用球孢白僵菌粉劑均勻噴施于地表防治越冬幼蟲。蝸牛等軟體動物發(fā)生為害時,噴施四聚乙醛或四聚·殺螺胺等藥劑進行防治。
 
  (四)收獲期。秸稈粉碎還田,深翻耕耙,降低病蟲基數(shù)。
 
  注意事項
 
  (一)大豆登記用藥品種有限,本方案中提到的藥劑僅供參考,根據(jù)當?shù)剞r(nóng)業(yè)農(nóng)村部門有關(guān)規(guī)定和指導意見,科學選用藥劑,注意合理輪換用藥和交替使用。
 
  (二)在病蟲害發(fā)生前期或初期優(yōu)先選用生物、物理等非化學防治措施,注意保護利用自然天敵和生物多樣性;防治食葉害蟲大豆營養(yǎng)生長期可適當放寬防治指標,減少化學用藥,注重開花結(jié)莢鼓粒期的精準防控。
 
  (三)加強拌種(包衣)機、噴霧器、無人機等植保器械及操作技術(shù)的配套,確保技術(shù)到位率和安全性。
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