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山東省關于印發2022年玉米播種和苗期管理技術意見的通知

2022-06-10 09:55:59 來源:山東省農業農村廳 閱讀量:14082 評論

  山東省農業農村廳關于印發2022年全省玉米播種和苗期管理技術意見的通知
 
  魯農技字〔2022〕24號
 
  各市農業農村局:
 
  為指導各地全力抓好玉米播種和苗期生產管理關鍵技術措施落實,切實提高玉米播種、出苗質量,為秋糧及全年糧食豐收打好基礎,我廳制定了《2022年全省玉米播種和苗期管理技術意見》。現印發給你們,請結合生產實際組織實施。
 
  山東省農業農村廳
 
  2022年6月9日
 
  2022年全省玉米播種和苗期管理技術意見
 
  為指導各地切實抓好玉米播種和苗期管理,培育健康壯苗、構建合理群體,為玉米豐產豐收打好基礎,特制定本技術意見。
 
  一、精心備播,夯實播種基礎。提早做好種子、化肥、農藥、農機具等物資的播前準備,是確保玉米適期高效高質量播種的基礎。
 
  (一)科學選種。應綜合土壤肥力、光溫資源、耕作習慣、灌溉條件等因素,科學選擇品種。小面積高產攻關田可選用登海605、農大372、MY73、NK815等高產潛力大的品種;大面積示范田可采用登海605、農大372、鄭單958等年際間高產穩產、耐密抗倒、適應性廣的品種;普通農田可種植耐密植抗倒、高產穩產、宜機收的登海605、鄭單958、青農11、天泰33號、迪卡517、魯單9088、魯單510等品種;青貯玉米可種植飼玉2號、登海605、德單5號等生物產量高的品種;鮮食玉米可種植青農206、西星五彩鮮糯、濟糯33等口感、色彩、賣相好的品種;籽粒機收可種植魯單2016、宇玉30、迪卡517、鑫瑞25、金來376、京農科728等生育期適中、籽粒脫水快、穗位整齊、抗倒性強的品種。
 
  (二)包衣拌種。種子應適宜單粒精播,需滿足純度≥98%,種子發芽率≥95%,凈度≥98%,含水量≤13%。可用含有噻蟲嗪、吡蟲啉、溴氰蟲酰胺等成分的藥劑包衣或拌種,防治地老虎、螻蛄等地下害蟲及薊馬、蚜蟲、灰飛虱等苗期害蟲;用含有咯菌腈·精甲霜、苯醚甲環唑、吡唑醚菌酯或戊唑醇等成分的藥劑處理種子,防治根腐病、莖基腐病和絲黑穗病等。種子處理應技術統一、集中連片、整村推進,可提高防病治蟲效果。
 
  (三)機械選擇。玉米適播期短,需要搶時播種。各地要提前開展農機手培訓,并將農機調試至最佳狀態。有條件的地方,要優先選用具有播量、播深智能控制功能的機型;小麥秸稈粉碎質量差的地區,可選擇清茬(或滅茬)玉米精量播種機;在土層板結或帶肥量大的地區,可選擇深松多層施肥玉米精量播種機,以利于根系下扎。
 
  (四)備足水源。干旱是影響玉米適期播種的最主要因素。各地要提早組織水源,澆好蒙頭水、出苗水。同時各地也要提前疏通溝渠,提高短時強降雨或持續降雨等極端天氣下排澇能力。
 
  二、搶時精播,確保一播全苗。面積是產量的基礎。各地要全面落實糧食安全黨政同責,抓住玉米價格較高的有利時機,積極發動農戶種植玉米,切實做到應播盡播,確保面積穩定。
 
  (一)適墑播種。各地要密切關注天氣變化,玉米播前無有效降水的,單粒精播后要立即澆蒙頭水,水澆條件較差的地區可在播種后單獨灌溉播種行,有條件的地方應大力推廣微噴灌技術,確保玉米順利出苗。玉米播前如有強降水,應發動農戶盡力在降水前完成播種;如確因降水無法播種的,應在播種機械具備進地條件后,立即播種。
 
  (二)合理密植。玉米適播期為6月上中旬,具備播種條件的地塊應搶播。小麥收獲同時切碎秸稈并拋撒均勻,切碎長度≤10厘米,長度合格率≥95%,拋灑不均勻率≤20%,漏切率≤1.5%,留茬高度≤20厘米。玉米播深3~5厘米,播種密度比預定收獲密度增加10%左右,耐密型玉米一般大田每畝播種5000粒左右,示范田5500粒左右,攻關田5800~6000粒。大穗型品種一般大田每畝播種4600粒左右,高產田5300粒左右。應做到播深一致、行距一致、覆土一致、鎮壓一致,防止漏播、重播或鎮壓輪打滑。
 
  (三)種肥同播。播種機應具備種肥同播功能,施肥量根據地力和產量目標確定,推薦施用配方肥或緩控釋肥,控釋時間60~70天,控氮比30%左右,可選用28-6-12、26-8-8 或相近配方的肥料。高產地塊每畝推薦用量45~55公斤,普通地塊推薦用量40~45公斤。肥料側深施于種子下方8~10厘米,防止燒種和燒苗。
 
  三、加強管理,構建高產群體。玉米苗期以長根、增葉和莖節分化為主,耐旱怕澇怕草害。苗期主要是做好病蟲草害防治,確保苗全、苗齊、苗勻、苗壯,構建合理群體結構。
 
  (一)化學除草。化學除草建議苗期進行,可在玉米3~5葉期、雜草2~4葉期用丁草胺·莠去津或硝基草酮等進行莖葉噴霧。為避免藥害產生,要科學選藥、選噴灑器械,并嚴格按照用量,同時注意噴灑均勻,不重噴、不漏噴、不漂移,確保除草質量和用藥安全。
 
  (二)防蟲治病。種子包衣的地塊苗期一般不會發生常規病蟲危害。但近年二點委夜蛾、草地貪夜蛾等蟲害發生難以精確預測,各地要密切注意病蟲發生情況,開展病蟲害預報預測,以防為主,防治結合,一旦發生,要趁早防治,切斷傳播路徑,降低損失。二點委夜蛾可用甲氨基阿維菌素苯甲酸鹽防治,草地貪夜蛾可用乙基多殺菌素、氯蟲苯甲酰胺等進行防治。
 
  (三)輕簡管理。玉米苗期抗旱能力較強,適度干旱有利于玉米根系下扎,起到蹲苗效果。澆好蒙頭水和種肥同播的地塊,苗期一般不需要進行管理。若干旱嚴重,應及時澆水,如遭遇強降水應及時排澇,防止芽澇或苗澇。如遇強風雨造成幼苗倒伏,一般不用扶正,幼苗可自行恢復至直立狀態。植株如有分蘗,無需拔除。
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