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2021年夏花生生產技術意見

2021-06-03 09:43:47 來源:農業農村部油料專家指導組 作者:全國農業技術推廣服務中心 閱讀量:17955 評論

  【農機網 科技創新】 我國夏花生主要分布在黃淮海地區,包括麥后直播和麥田套種兩類種植模式。為指導各地抓好夏花生生產,推進夏花生高質量發展,現提出2021年夏花生生產技術意見。
 
  一、科學選用品種,提高種子質量
 
  根據生態條件、種植模式及市場需求選用優質高產、抗病性好、適合機械收獲的中早熟花生品種,因地制宜選用高油酸品種。麥后直播花生宜選用生育期在110天以內的早熟中小果品種,覆膜直播花生選用比露地栽培生育期長10—15天的中熟品種,寬幅間作夏花生選用較耐蔭、中大果、適應性廣的早熟或中早熟品種。麥套花生選用生育期在125天以內的中早熟、中大果品種。要扎實做好曬種、精選、包衣等種子加工工作,確?;ㄉN子飽滿、均勻、活力強,切實提高種子質量。
 
  二、適期適墑播種,提高播種質量
 
  要做到搶茬播種、足墑播種、合理密植等,提高夏花生播種質量,打好豐收基礎。一是搶茬播種。麥后直播花生應搶時早播,一般不晚于6月15日;鑒于今年4月、5月上中旬溫度相對偏低、小麥收獲可能推遲,應適當提前做好備播準備,確保小麥收獲后搶時早播。麥套花生一般在麥收前15—20天播種。二是足墑播種?;ㄉシN適宜的土壤水分含量為田間最大持水量的70%左右,墑情不足的地塊要造墑播種,特別是麥套花生遇旱要在適播期前造墑。為保證搶時早播、減少造墑以及可能的陰雨天氣影響播期,可采用“干播濕出”的方法,如起壟種植花生播后順壟澆灌,覆膜花生宜采用膜下滴灌,露地花生可采用微噴等方式。三是合理密植。麥后直播花生推廣機械化起壟種植模式,壟距75—80厘米,壟面寬50厘米左右,壟上播2行,播種密度12000穴/畝左右、每穴2粒;單粒精播16000—18000穴/畝。麥套花生10000穴/畝左右、每穴2粒。四是精細播種。播種深度一般控制在3—5厘米,墑情好的播種深度宜淺,墑情差的播種深度宜深。壟作覆膜夏花生宜淺播覆土,播種深度控制在2—3厘米,播后覆膜鎮壓,膜上覆土2—3厘米,確保下胚軸伸長,子葉節出土(膜)。
 
  三、精準調控肥水,優化群體質量
 
  夏花生生育進程較快,在田間管理上要以促為主,促控結合,不斷優化群體質量。一是滅茬培土。麥套花生始花前要及時滅茬滅草,麥后直播花生要精細整地,盛花期封壟前進行中耕培土,增強土壤通透性。二是平衡施肥。麥套花生結合中耕每畝追施尿素或復合肥15公斤左右,過磷酸鈣30—50公斤。麥后直播花生整地時施足底肥,根據預期產量、土壤肥力狀況,合理使用氮磷鉀和鈣肥,適量補充微肥,一般畝施花生專用肥40—50公斤,花針期畝追施石膏粉25公斤,促進莢果和籽仁發育。三是及時補水。夏花生對干旱十分敏感,苗期視土壤墑情及時灌溉,促苗早發?;ㄡ樒诤徒Y莢期(7月中下旬至8月上中旬)是花生生長發育需水的臨界期,干旱時應及時灌溉。同時,應保持田間“三溝”相通,注意排水,防止芽澇、苗澇,以及后期澇災對產量和品質的影響。四是因苗化控。在花生株高30厘米左右時,有旺長趨勢的田塊應及時噴施植物生長調節劑控旺防倒,調節劑的使用應嚴格按照使用說明書,噴施時間一般于上午10點前或下午3點后進行。后期結合葉部病害防治,可噴灑磷酸二氫鉀等葉面肥,防病防早衰。
 
  四、綠色防控病蟲,促進可持續發展
 
  一是合理輪作。提倡花生與玉米、水稻等糧食作物輪作,改善土壤環境,減輕連作障礙,同時防治花生土傳病害及部分葉部病害。二是選用抗病品種,并進行種子處理。因地制宜選用抗病品種,特別是在花生青枯病嚴重的地區,應選擇高抗青枯病的品種;在播種前對種子進行包衣或拌種,預防花生根腐病、莖腐病、冠腐病等土傳病害和蠐螬等地下害蟲的發生。三是起壟種植。起壟種植有利于通風透光、改善土壤理化性質,改良花生生長環境、培育壯苗,提高抗病能力。四是做好生物、物理防治??墒褂妙l振燈、色板、性誘劑、食誘劑、糖醋液等誘控技術,以及天敵保護利用、蓖麻等誘集植物捕殺措施。
 
  五、及時收獲干燥,確保安全儲藏
 
  花生大部分莢果飽滿成熟時,搶晴好天氣及時收獲,可采取聯合收獲或分段收獲。根據氣溫和騰茬需求可適當晚收,延長飽果充實時間,提高產量品質。收獲后應抓緊晾曬或烘干干燥,使莢果含水量盡快降到10%以下后精選入庫,倉庫應控制貯藏溫濕度條件,防治貯藏害蟲,降低黃曲霉毒素污染發生風險。為提高花生品質品相,應盡量做到分品種專收專儲。
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