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當(dāng)前黃淮海抗旱保夏播技術(shù)意見

2024-06-13 08:44:45 來源:全國農(nóng)業(yè)技術(shù)推廣服務(wù)中心 閱讀量:17656 評(píng)論

  【農(nóng)機(jī)網(wǎng) 熱點(diǎn)關(guān)注】 “芒種”已過,夏收進(jìn)入高峰,夏播全面展開。5月以來,黃淮海地區(qū)持續(xù)晴天少雨,氣溫偏高2—3℃,土壤失墑快,部分地區(qū)旱象抬頭。據(jù)氣象部門預(yù)計(jì),6月中下旬,黃淮海地區(qū)仍以晴天為主,降雨持續(xù)偏少,部分地區(qū)有可能出現(xiàn)旱情,對(duì)玉米大豆夏播和出苗造成不利影響。黃淮海地區(qū)要立足抗干旱、保夏播、促全苗,落實(shí)合理密植、種肥同播、免耕直播等措施,切實(shí)提高播種質(zhì)量,確保一播保全苗、種在豐產(chǎn)期,夯實(shí)玉米大豆等夏播作物高產(chǎn)基礎(chǔ)。
 
  科學(xué)抗旱搶農(nóng)時(shí)
 
  春爭日、夏爭時(shí),適期播種是夏播作物高產(chǎn)的前提。堅(jiān)持寧早不晚,前茬收獲后搶時(shí)播種,黃淮海中南部爭取6月15日前、黃淮海北部6月20日前完成播種。要立足抗干旱、抗長旱,提前做好抗災(zāi)準(zhǔn)備,廣辟水源,合理調(diào)配澆水設(shè)施,為適期適墑播種創(chuàng)造條件。
 
  造墑播種保全苗
 
  對(duì)干旱缺墑明顯的田塊,有條件的地方澆水造墑,確保適期播種。對(duì)表墑不足、底墑較好的田塊,通過坐水播種、澆“蒙頭水”等措施,確保種足種滿。對(duì)近期可能出現(xiàn)降雨的地區(qū),可以干籽播種、等雨出苗。對(duì)水源條件較好的地區(qū),通過水肥一體化設(shè)施,落實(shí)滴水出苗,確保苗齊苗勻。
 
  精準(zhǔn)播種提質(zhì)量
 
  玉米選擇多功能高精度、種肥同播、單粒精播的機(jī)械,有條件的地方選用氣吸式或指夾式等精密播種機(jī),實(shí)行免耕貼茬直播、種肥異位同播,提高作業(yè)精度。大豆優(yōu)先選擇氣吸式高性能播種機(jī),推廣麥后免耕覆秸精播技術(shù),切實(shí)提高播種質(zhì)量。
 
  合理密植保足苗
 
  選用熟期適宜、高產(chǎn)穩(wěn)產(chǎn)、耐密抗倒、適宜機(jī)收等品種。實(shí)施種子包衣,有必要的進(jìn)行二次包衣。玉米一般大田選擇耐高溫的中早熟品種,實(shí)施密植滴灌的地塊選擇中穗型品種,一般大田畝播4500—4800粒、密植滴灌地塊5000—5500粒。大豆選用宜機(jī)收、抗倒伏的高產(chǎn)品種,畝播量6—8斤,畝保苗1.2萬—1.5萬。
 
  來源:農(nóng)業(yè)農(nóng)村部玉米專家指導(dǎo)組、全國農(nóng)業(yè)技術(shù)推廣服務(wù)中心
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