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地點： 合肥市
開展時間： 2025-03-27
舉辦單位： 上海市貿促會、安徽省貿促會
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地點： 無錫市
開展時間： 2025-03-29
舉辦單位： 中國機電產品流通協會、無錫市機床工具行業協會、無錫市工業和信息化局
2020年東北春玉米后期田間管理技術指導意見
2020-08-06
08:50:37
來源：農業農村部新聞辦公室 閱讀量：16360
評論
【農機網 熱點關注】 當前，東北地區春玉米已陸續進入籽粒灌漿期，是產量形成的關鍵時期。針對近期東北地區氣象變化和春玉米生育進程，農業農村部玉米專家指導組會同全國農業技術推廣服務中心制定了2020年東北春玉米后期田間管理技術指導意見。
一是抗旱排澇促生長。根據天氣變化，做好土壤墑情監測。針對出現旱情的地塊，及時灌溉或人工增雨，落實抗旱保苗措施，避免因旱嚴重減產。針對近期連續降雨的地區，注意及時排除低洼溝壑易澇等地塊的積水。若發生倒伏，及時扶正并培土。
二是肥水調控增粒重。根據土壤水分、養分狀況和植株長勢，結合澆水或降雨追施*氮肥，并適當增施鉀肥，防止貪青晚熟。也可葉面噴施磷酸二氫鉀、尿素等混合液，促進光合產物積累，增加粒重。特別是對因旱導致發育延遲的地塊，要及時補水灌溉，加強田間管理，促進生長發育和提早成熟。
三是統防統治控病蟲。加強對草地貪夜蛾、大斑病、莖腐病、玉米螟、粘蟲等病蟲害的動態監測和預警，綜合運用農業、物理、化學等手段，統防統治、群防群治、綠色防控，提高防控效果，降低產量損失，提高籽粒品質。
四是安全成熟防早霜。密切關注氣溫變化和霜凍預警，針對早春低溫晚播生長發育延遲或受旱澇影響地塊，灌漿后期采用無人機適時適量噴施磷酸二氫鉀或具有促早熟作用的生長調節劑，增強植株抗逆性，加快籽粒灌漿，提高籽粒充實度，促進安全成熟，規避早霜風險。同時，堅持抓好放秋壟、拔大草等常規促早熟技術措施，提高田間通風透光能力，促進早熟。
五是適時晚收奪高產。充分利用玉米后熟性強的特點，發揮機械收獲優勢，在秋季早霜來臨前盡量延遲玉米收獲時間，促進養分積累，保證籽粒充分成熟，加速果穗和籽粒脫水，降低籽粒含水率，提高玉米產量和籽粒品質。
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