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2021年夏花生生产技术意见

2021-06-03 09:43:47 来源:农业农村部油料专家指导组 作者:全国农业技术推广服务中心 阅读量:17661 评论

导读: 我国夏花生主要分布在黄淮海地区,包括麦后直播和麦田套种两类种植模式。为指导各地抓好夏花生生产,推进夏花生高质量发展,现提出2021年夏花生生产技术意见。

  【农机网 科技创新】 我国夏花生主要分布在黄淮海地区,包括麦后直播和麦田套种两类种植模式。为指导各地抓好夏花生生产,推进夏花生高质量发展,现提出2021年夏花生生产技术意见。
 
  一、科学选用品种,提高种子质量
 
  根据生态条件、种植模式及市场需求选用优质高产、抗病性好、适合机械收获的中早熟花生品种,因地制宜选用高油酸品种。麦后直播花生宜选用生育期在110天以内的早熟中小果品种,覆膜直播花生选用比露地栽培生育期长10—15天的中熟品种,宽幅间作夏花生选用较耐荫、中大果、适应性广的早熟或中早熟品种。麦套花生选用生育期在125天以内的中早熟、中大果品种。要扎实做好晒种、精选、包衣等种子加工工作,确保花生种子饱满、均匀、活力强,切实提高种子质量。
 
  二、适期适墒播种,提高播种质量
 
  要做到抢茬播种、足墒播种、合理密植等,提高夏花生播种质量,打好丰收基础。一是抢茬播种。麦后直播花生应抢时早播,一般不晚于6月15日;鉴于今年4月、5月上中旬温度相对偏低、小麦收获可能推迟,应适当提前做好备播准备,确保小麦收获后抢时早播。麦套花生一般在麦收前15—20天播种。二是足墒播种。花生播种适宜的土壤水分含量为田间最大持水量的70%左右,墒情不足的地块要造墒播种,特别是麦套花生遇旱要在适播期前造墒。为保证抢时早播、减少造墒以及可能的阴雨天气影响播期,可采用“干播湿出”的方法,如起垄种植花生播后顺垄浇灌,覆膜花生宜采用膜下滴灌,露地花生可采用微喷等方式。三是合理密植。麦后直播花生推广机械化起垄种植模式,垄距75—80厘米,垄面宽50厘米左右,垄上播2行,播种密度12000穴/亩左右、每穴2粒;单粒精播16000—18000穴/亩。麦套花生10000穴/亩左右、每穴2粒。四是精细播种。播种深度一般控制在3—5厘米,墒情好的播种深度宜浅,墒情差的播种深度宜深。垄作覆膜夏花生宜浅播覆土,播种深度控制在2—3厘米,播后覆膜镇压,膜上覆土2—3厘米,确保下胚轴伸长,子叶节出土(膜)。
 
  三、精准调控肥水,优化群体质量
 
  夏花生生育进程较快,在田间管理上要以促为主,促控结合,不断优化群体质量。一是灭茬培土。麦套花生始花前要及时灭茬灭草,麦后直播花生要精细整地,盛花期封垄前进行中耕培土,增强土壤通透性。二是平衡施肥。麦套花生结合中耕每亩追施尿素或复合肥15公斤左右,过磷酸钙30—50公斤。麦后直播花生整地时施足底肥,根据预期产量、土壤肥力状况,合理使用氮磷钾和钙肥,适量补充微肥,一般亩施花生专用肥40—50公斤,花针期亩追施石膏粉25公斤,促进荚果和籽仁发育。三是及时补水。夏花生对干旱十分敏感,苗期视土壤墒情及时灌溉,促苗早发。花针期和结荚期(7月中下旬至8月上中旬)是花生生长发育需水的临界期,干旱时应及时灌溉。同时,应保持田间“三沟”相通,注意排水,防止芽涝、苗涝,以及后期涝灾对产量和品质的影响。四是因苗化控。在花生株高30厘米左右时,有旺长趋势的田块应及时喷施植物生长调节剂控旺防倒,调节剂的使用应严格按照使用说明书,喷施时间一般于上午10点前或下午3点后进行。后期结合叶部病害防治,可喷洒磷酸二氢钾等叶面肥,防病防早衰。
 
  四、绿色防控病虫,促进可持续发展
 
  一是合理轮作。提倡花生与玉米、水稻等粮食作物轮作,改善土壤环境,减轻连作障碍,同时防治花生土传病害及部分叶部病害。二是选用抗病品种,并进行种子处理。因地制宜选用抗病品种,特别是在花生青枯病严重的地区,应选择高抗青枯病的品种;在播种前对种子进行包衣或拌种,预防花生根腐病、茎腐病、冠腐病等土传病害和蛴螬等地下害虫的发生。三是起垄种植。起垄种植有利于通风透光、改善土壤理化性质,改良花生生长环境、培育壮苗,提高抗病能力。四是做好生物、物理防治。可使用频振灯、色板、性诱剂、食诱剂、糖醋液等诱控技术,以及天敌保护利用、蓖麻等诱集植物捕杀措施。
 
  五、及时收获干燥,确保安全储藏
 
  花生大部分荚果饱满成熟时,抢晴好天气及时收获,可采取联合收获或分段收获。根据气温和腾茬需求可适当晚收,延长饱果充实时间,提高产量品质。收获后应抓紧晾晒或烘干干燥,使荚果含水量尽快降到10%以下后精选入库,仓库应控制贮藏温湿度条件,防治贮藏害虫,降低黄曲霉毒素污染发生风险。为提高花生品质品相,应尽量做到分品种专收专储。
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