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湖北省出臺水稻“一噴多促”無人飛機作業(yè)技術指導意見

2024-08-21 09:16:00 來源:湖北省農(nóng)業(yè)技術推廣總站 湖北省水稻大面積單產(chǎn)提升專家組 閱讀量:11929 評論

  【農(nóng)機網(wǎng) 科技創(chuàng)新】 水稻“一噴多促”是指在水稻生長期間將葉面肥、調(diào)節(jié)劑、抗逆劑、殺蟲殺菌劑等混合噴施,一次作業(yè)可以實現(xiàn)促生長發(fā)育、促灌漿成熟、促災后恢復、促產(chǎn)量提高等多重效應,是有災防災、無災增產(chǎn)的關鍵措施。當前,全省水稻主產(chǎn)區(qū)早熟中稻已經(jīng)進入抽穗灌漿期,中熟水稻處于孕穗期,晚播中稻和雙季晚稻處于分蘗期至拔節(jié)期,是產(chǎn)量形成關鍵期,也是“一噴多促”窗口期。為科學指導各地開展“一噴多促”工作,助力奪取全年水稻豐收,提出以下指導意見。
 
  一、技術適用范圍
 
  本意見適用于水稻“一噴多促”無人飛機施藥作業(yè),所涉及的無人飛機作業(yè)參數(shù)、藥劑選擇和施藥參數(shù)等因素僅供參考,在實際應用中應根據(jù)氣象條件、生育期、藥劑助劑品種、無人飛機機型特點、周邊作物和施藥環(huán)境等進行調(diào)整和優(yōu)化。大規(guī)模施藥前須開展小范圍試驗。
 
  二、作業(yè)環(huán)境要求
 
  水稻實施“一噴多促”噴施作業(yè)時,環(huán)境溫度不宜超過30℃。鑒于部分地區(qū)中午氣溫高,上升氣流強,因地制宜選擇上午10時前或下午16時后無露水時噴施作業(yè),高溫天氣下可選擇在晚上施藥。留意天氣預報,噴后24小時內(nèi)遇到中到大雨,要及時補噴,以保證噴施效果。
 
  三、飛行參數(shù)設置
 
  綜合考慮生育期、畝施藥液量、無人飛機機型和下壓風力大小等因素,設定飛行參數(shù),確保噴霧均勻、無重噴漏噴、飄移損失小且植株無折損。作業(yè)時環(huán)境風速應小于三級風(≤3.3m/s),針對現(xiàn)有主流植保無人飛機,建議飛行速度3~5m/s,施藥液量1.5~3升/畝;飛行高度(離冠層高度)根據(jù)載荷重量適當調(diào)整,載荷重量<30L的飛行高度2~3m、載荷量≥30L的飛行高度3.5~4.5m,防治稻飛虱、紋枯病等莖基部病蟲害時應結合實際適當降低飛行高度;作業(yè)前應根據(jù)飛行高度確定有效作業(yè)噴幅,確保噴幅邊緣有足夠的藥液沉積量。
 
  四、防控藥劑選擇
 
  按照各地水稻生產(chǎn)實際情況,結合當?shù)夭∠x發(fā)生情況,科學混用殺蟲劑、殺菌劑、植物生長調(diào)節(jié)劑、葉面肥等,藥液配制時應確保所有組分混合均勻、混配穩(wěn)定、協(xié)同增效且對作物無藥害。選用三氟苯嘧啶、四氯蟲酰胺、茚蟲威、乙基多殺菌素等殺蟲劑防治稻飛虱、稻縱卷葉螟、水稻二化螟等害蟲,選用三環(huán)唑、吡唑醚菌酯微囊懸浮劑、噻呋酰胺、嘧菌酯、肟菌·戊唑醇等殺菌劑防治稻瘟病、紋枯病、稻曲病等病害。合理混配蕓苔素內(nèi)酯、噻苯隆、赤·吲乙·蕓苔、14-羥蕓·噻苯隆、調(diào)環(huán)酸鈣等植物生長調(diào)節(jié)劑進行葉面噴施,提高水稻抗逆能力,增加千粒重。
 
  五、噴霧助劑添加
 
  施藥作業(yè)前,宜在藥液中添加適量的改性植物油、礦物油等噴霧助劑并混合均勻,用于改善農(nóng)藥藥液性能,提高霧滴沉降、抗飄移、耐雨水沖刷、抗蒸發(fā)等性能。
 
  六、其它注意事項
 
  (一)作業(yè)前調(diào)查作業(yè)周邊環(huán)境、確定作業(yè)區(qū)域及邊界。根據(jù)作業(yè)區(qū)域,綜合評估潛在風險,防止噴霧霧滴飄移造成非靶標生物毒害和周邊作物藥害。
 
  (二)進行霧滴密度檢測,保證飛防作業(yè)質(zhì)量和施藥效果。建議調(diào)整飛行作業(yè)參數(shù),提高施藥均勻性,確保每平方厘米霧滴數(shù)量在20個以上。
 
  (三)起降作業(yè)時遠離障礙物和人員,作業(yè)人員應穿戴必要的防護用品,避免處在噴霧的下風位,嚴禁在施藥區(qū)穿行,作業(yè)時禁止吸煙及飲食。
 
  (四)作業(yè)后及時跟蹤調(diào)查病蟲害防治效果和產(chǎn)量性狀并做好記錄。
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