南方水稻灌漿成熟期無人機葉面噴肥技術(shù)指導(dǎo)意見

2024-10-10 09:16:45 來源:全國農(nóng)技推廣中心 閱讀量:14509 評論

  【農(nóng)機網(wǎng) 科技創(chuàng)新】 灌漿期是水稻產(chǎn)量和品質(zhì)形成的關(guān)鍵時期,灌漿過程易受溫度、水肥條件等因素影響。今年南方部分地區(qū)秋季高溫天氣持續(xù),可能會影響水稻灌漿,導(dǎo)致結(jié)實率下降、產(chǎn)量降低,可適時采用無人機噴施葉面肥,促進水稻高產(chǎn)穩(wěn)產(chǎn)。
 
  適用區(qū)域
 
  適用于南方遭遇持續(xù)高溫天氣的水稻主產(chǎn)區(qū)。
 
  技術(shù)要點
 
  (一)無人機選擇
 
  選擇當(dāng)?shù)剞r(nóng)業(yè)生產(chǎn)中普遍使用的農(nóng)用無人機,有效負載50公斤以上為宜。水稻葉面噴施時有效播撒幅寬3—5米、作業(yè)高度3—4米、飛行速度4—6米/秒,每畝施肥量誤差不超過5%。無人機應(yīng)具備自主作業(yè)、智能避障、漏堵報警、實時監(jiān)控和軌跡記錄等功能。
 
  (二)肥料選擇
 
  應(yīng)選擇溶解性好的氮磷鉀和中微量元素肥料,如磷酸二氫鉀、七水硫酸鎂、六水硝酸鎂、硫酸鋅等,或大量元素水溶肥料、中量元素水溶肥料、微量元素水溶肥料、含氨基酸水溶肥料、含腐植酸水溶肥料、有機水溶肥料等。成熟期可與乙酸銨、乙烯利、表面活性劑(如吐溫20)等配合施用。
 
  (三)作業(yè)程序
 
  1、使用無人機噴肥前,根據(jù)作業(yè)條件設(shè)置無人機的飛行高度、速度、噴幅、航線方向、噴灑量、霧化顆粒大小等參數(shù)并試飛,試飛正常后方可進行飛行作業(yè)。
 
  2、葉面噴肥作業(yè)前,按照建議的濃度用清水溶解肥料,待全部溶解后,靜置3—5分鐘,取清液噴施。
 
  3、葉面噴肥作業(yè)應(yīng)在風(fēng)力小于3級的陰天或晴天傍晚進行,防止灼傷稻苗,確保肥效。
 
  4、追肥作業(yè)后,應(yīng)記錄無人機作業(yè)情況。葉面噴肥后若遇雨,應(yīng)重新噴施。
 
  5、噴施作業(yè)結(jié)束后,觀察水稻長勢決定是否再次噴施。前后兩次噴施至少間隔7—10天,不可盲目噴施造成肥害。
 
  注意事項
 
  1、視苗情長勢和天氣情況,可在灌漿期和成熟期各噴施1次。
 
  2、無人機操作人員應(yīng)持證上崗,做好防護措施。無人機轉(zhuǎn)運時應(yīng)遠離,禁止觸摸。
 
  3、肥料混合噴施時應(yīng)按照品種特性和使用說明進行混配。
 
  4、嚴格遵守?zé)o人機飛行相關(guān)法律法規(guī)。
 
  來源:農(nóng)業(yè)農(nóng)村部種植業(yè)管理司、全國農(nóng)業(yè)技術(shù)推廣服務(wù)中心、農(nóng)業(yè)農(nóng)村部科學(xué)施肥指導(dǎo)專家組
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