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水稻田苗后莖葉除草技術(shù)

2024-06-11 09:46:28 來源：黑龍江省農(nóng)業(yè)農(nóng)村廳 閱讀量：13059 評論

　　【農(nóng)機網(wǎng) 熱點關(guān)注】稻田除草倡導(dǎo)“早期治理”理念，采用“兩封一補動態(tài)精準(zhǔn)施藥”防治策略，依據(jù)不同地區(qū)的氣象條件、土壤類型、水層管理條件以及田間雜草的發(fā)生種類、葉齡等實際情況，因地制宜，合理選擇適宜藥劑及用藥次數(shù)，精準(zhǔn)施藥，避免產(chǎn)生飄移藥害。
 
　　生產(chǎn)中，可具體分解為“兩次封閉”、“兩封一補”、“一封一殺”、“一次封殺”等幾種模式。灌溉水充足稻田，雜草防控采用“兩封一補”策略，插秧前和插秧后各采用土壤封閉處理1次，以達(dá)到防控整個水稻生育期雜草的目的，插后20天視兩次封閉后的雜草基數(shù)，合理選擇是否進(jìn)行后期的莖葉噴霧補防。在灌溉水緊缺稻田，雜草防控采用“一封一殺”策略，插后土壤封閉處理1次，插后20天莖葉噴霧處理1次。
 
　　苗后莖葉除草階段：(1)以稗草為主的地塊，可使用五氟磺草胺、三唑磺草酮、嘧啶肟草醚、氰氟草酯、噁唑酰草胺、二氯喹啉酸或依草情使用相關(guān)復(fù)配產(chǎn)品。(2)以稗草和野慈姑為主的地塊，可使用嘧啶肟草醚、五氟磺草胺及相關(guān)復(fù)配產(chǎn)品防治。(3)以莎草科和闊葉雜草為主的地塊，可在水稻分蘗末期使用滅草松或2甲·滅草松防治。(4)以野慈姑、澤瀉、雨久花等闊葉雜草為主，伴有少量莎草的地塊，可使用氯氟吡啶酯或滅草松+2甲4氯防治。(5)防治稻李氏禾和菰(江稗)可用三唑磺草酮或嘧啶肟草醚防治。

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