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【实用技术】内蒙古2024年度农业主推技术——大豆大垄密植浅埋滴灌栽培技术

2024-03-29 10:39:13 来源:内蒙古自治区农牧厅 阅读量:12629 评论

导读:针对东北大豆产区春播期干旱,坐水种困难,播后出苗不齐不全,关键生育时期遇旱灌溉难,严重影响大豆单产的问题,研究集成的提高水肥利用效率的栽培技术模式。

  【农机网 科技创新】 一、技术概述
 
  (一)技术基本情况
 
  针对东北大豆产区春播期干旱,坐水种困难,播后出苗不齐不全,关键生育时期遇旱灌溉难,严重影响大豆单产的问题,研究集成的提高水肥利用效率的栽培技术模式。该技术通过滴灌,实现了适时播种,播期可较传统种植模式提早2-3天,播种覆土可比传统垄作覆土浅,出苗提前2-3天,实现了苗全、苗齐、苗匀,一次播种抓全苗;通过增加垄体宽度实现合理密植,可较传统种植模式亩保苗提高2000-3000株;通过水肥一体化,可亩均节水40%,同时降低灌溉劳动强度,省工、省力,是一项绿色高产高效的大豆栽培技术。
 
  大豆大垄密植浅埋滴灌栽培技术标准属新技术类,研发单位为内蒙古自治区农牧业技术推广中心和兴安盟扎赉特旗农牧和科技事业发展中心,2021年发布,标准编号为DB15/T 2441—2021;发布日期:2021-11-15;获奖名称:2022年获得中国农业农村重大科技新成果——十项新技术之一;证书编号为2022-XJS-09。
 
  (二)技术示范推广情况
 
  大豆大垄密植浅埋滴灌栽培技术最早是借鉴通辽市玉米无膜浅埋滴灌水肥一体化技术,于2016年在兴安盟扎赉特旗率先开展小面积试验。2017年,在兴安盟扎赉特旗好力保镇五道河子村继续开展试验示范,面积1000亩,当年试验田平均亩产超过200公斤,取得初步成功。2018年,结合上年试验示范情况,通过改良播种机具,进一步优化大豆植株的田间分布,示范面积扩大到3000亩,平均亩产达到250公斤以上,得到当地种植户普遍认可,技术模式创新集成取得成功。2019年,该技术开始在扎赉特旗正式推广,当年推广面积就达到3万亩,平均产量在250公斤以上。2020—2023年,推广面积逐年扩大,分别为5.1万亩、7.3万亩、11.8万亩、16.6万亩,推广区域从兴安盟扩大到区内的通辽市、赤峰市和乌兰察布市和相邻的黑龙江省、吉林省和辽宁省,平均亩产均在260公斤以上。
 
  该技术已成为内蒙古大豆持续刷新高产纪录的“科技密码”。2018年至今,自治区农技推广部门邀请国家大豆方面相关专家,分别在扎赉特旗好力保镇五道河子村、音德尔镇乌鸦站村及音德尔镇五家子村对大豆大垄密植浅埋滴灌栽培技术示范田进行实收测产。
 
  2018年实收面积1.18亩,实测产量291.1kg/亩,刷新了内蒙古自治区2005年创造的大豆亩产251.0公斤的高产纪录,也打破了2011年农户徐万军7亩大豆亩产285公斤的纪录;2019年实收面积1.017亩,实测产量309.3kg/亩;2020年实收面积1.32亩,实测产量310.51kg/亩,连续刷新内蒙古和东北北部地区大豆单产纪录。2023年,对兴安盟扎赉特旗好力保镇五家子村150亩大豆百亩示范区进行实收测产,亩产达到316.8公斤,再次刷新内蒙古和东北北部地区大豆单产纪录。
 
  (三)提质增效情况
 
  该技术可有效提高单产,与传统旱作种植模式相比,亩均增产60%以上。通过水肥一体化,可亩均节水40%,同时降低农民灌溉的劳动强度,省工、省力。在大豆主产区应用推广,对稳定主产区大豆面积,显著提高大豆单产水平,大幅提升种植效益,促进大豆与高产作物玉米的种植结构调整和优化具有重要意义。
 
  (四)技术获奖情况
 
  该技术是大豆大垄高台栽培技术在水浇地上的创新应用,“大豆大垄高台绿色高产高效栽培技术推广”项目,获2017~2019年度内蒙古农牧业丰收一等奖;《大豆大垄密植浅埋滴灌栽培技术规程》,DB15/T 2441-2021,于2021年11月发布,2021年12月实施。
 
  二、技术要点
 
  大豆大垄密植浅埋滴灌栽培技术是将大豆传统模式的65cm垄种改为120cm的床播,将原来的垄上双行改为垄上4行,采用宽窄行种植模式,小行距20cm,大行距30cm,株距13cm,在宽行中间铺设滴灌管,亩保苗由1.4万株提高到1.9万株,使大豆植株分布更加均匀合理,提高光能利用率,水肥利用效率,实现节肥节水、增产增效、绿色生产。
 
  (一)选地。选择地势平坦、土层深厚、保水保肥能力强、具有滴灌条件、不重茬和迎茬的适宜茬口地块。
 
  (二)整地。深松或深翻30 cm以上,打破犁底层,适时耙地。
 
  (三)选用优良的高蛋白、高油专用品种。种子纯度和净度均达到98%以上,发芽率达到90%以上。
 
  (四)测土配方施肥。N:P:K=1:1.5:1配方施肥,每亩用55%大豆专用肥(BB肥)15-17.5公斤。
 
  (五)机械播种。当耕层土壤温度稳定通过8℃时即可播种,选用大豆大垄密植浅埋滴灌专用精量播种机一次性完成播种、施肥、铺设滴灌带、镇压等作业。播种量4 kg/667m2~5 kg/667m2。镇压后播种深度3 cm。
 
  (六)滴灌管网连接及滴灌。播种后,将毛管、支管、主管和首部连通。当播种后土壤墒情不足时及时滴出苗水,滴水量20~30 m3/667m2,保证大豆正常出苗。
 
  (七)田间管理。适时铲趟、施肥。根据土壤墒情,在大豆开花期和结荚期,及时灌水2~3次,每次灌水量为20 ~30 m3/667m2。建议应用化学除草技术、病虫害绿色防控技术。
 
  (八)适时收获。人工收获,当植株落叶即可收割;机械收获,籽粒归仓,可在适期内抢收早收。
 
  三、适宜区域
 
  适宜内蒙古东部具有灌溉条件的大豆种植区或其他相同生态类型的地区。
 
  四、注意事项
 
  (一)滴灌管带上面必须盖土,防止春季大风刮走滴灌管。
 
  (二)播种覆土要浅,镇压后厚度3厘米左右。
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