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【實(shí)用技術(shù)】內(nèi)蒙古?2024年度農(nóng)業(yè)主推技術(shù)——玉米密植精準(zhǔn)調(diào)控高產(chǎn)技術(shù)

2024-03-27 08:34:49 來源:內(nèi)蒙古自治區(qū)農(nóng)牧廳 閱讀量:15768 評(píng)論

導(dǎo)讀:內(nèi)蒙古自治區(qū)農(nóng)牧廳通過主推技術(shù)遴選、推廣、應(yīng)用工作,發(fā)揮各級(jí)農(nóng)技推廣系統(tǒng)隊(duì)伍優(yōu)勢(shì),加強(qiáng)與科研院所和高等院校的協(xié)同合作,在玉米無膜淺埋滴灌技術(shù)水肥一體化技術(shù)基礎(chǔ)上,開展耐密玉米品種鑒選、機(jī)械粒收技術(shù)研究、綠色防控技術(shù)集成等試驗(yàn)示范推廣。

  【農(nóng)機(jī)網(wǎng) 科技創(chuàng)新
 
  一、技術(shù)概述
 
  (一)技術(shù)基本情況
 
  為了進(jìn)一步提升我區(qū)玉米生產(chǎn)水平,充分發(fā)揮主產(chǎn)區(qū)氣候資源優(yōu)勢(shì),立足自治區(qū)產(chǎn)糧又缺水的實(shí)際,自治區(qū)農(nóng)牧廳依托基層農(nóng)技推廣體系改革與建設(shè)補(bǔ)助項(xiàng)目,深入落實(shí)“藏糧于技、藏糧于地”戰(zhàn)略,通過主推技術(shù)遴選、推廣、應(yīng)用工作,發(fā)揮各級(jí)農(nóng)技推廣系統(tǒng)隊(duì)伍優(yōu)勢(shì),加強(qiáng)與科研院所和高等院校的協(xié)同合作,在玉米無膜淺埋滴灌技術(shù)水肥一體化技術(shù)基礎(chǔ)上,開展耐密玉米品種鑒選、機(jī)械粒收技術(shù)研究、綠色防控技術(shù)集成等試驗(yàn)示范推廣,進(jìn)一步實(shí)現(xiàn)了控水、控肥、控藥、控膜的“四控”技術(shù)要求,總結(jié)出了適合我區(qū)主產(chǎn)區(qū)土壤氣候條件的耐密品種和相應(yīng)配套技術(shù),逐步形成了玉米密植精準(zhǔn)調(diào)控高產(chǎn)技術(shù)模式。該技術(shù)以無膜淺埋滴灌技術(shù)為核心,配套耐密抗倒品種、導(dǎo)航精量播種、滴水出苗、合理密植、水肥一體化分次施肥、化學(xué)調(diào)控等措施,實(shí)現(xiàn)了產(chǎn)量質(zhì)量雙提升。
 
  (二)技術(shù)示范推廣情況
 
  2021年該技術(shù)在通遼市、赤峰市、呼和浩特市等地開展了多片大面積的試驗(yàn)示范。2022年,該項(xiàng)技術(shù)在通遼市得到大面積推廣,面積達(dá)69.24萬畝。2023年,結(jié)合協(xié)同推廣項(xiàng)目實(shí)施,全區(qū)共示范推廣玉米密植精準(zhǔn)調(diào)控高產(chǎn)技術(shù)321.92萬畝,其中在興安盟、呼倫貝爾市和通遼市等8個(gè)盟市的24個(gè)玉米主產(chǎn)旗縣,建設(shè)示范基地28個(gè),總面積1.47萬畝,輻射帶動(dòng)面積達(dá)到174.8萬畝,項(xiàng)目核心示范區(qū)平均畝產(chǎn)達(dá)到975.53公斤/畝。累計(jì)開展試驗(yàn)示范117項(xiàng)次,引進(jìn)篩選適宜當(dāng)?shù)氐膬?yōu)質(zhì)玉米品種,開展種植模式對(duì)比、適宜種植密度對(duì)比、水肥精準(zhǔn)調(diào)控與高效利用、病蟲防控與化控防倒、玉米籽粒直收試驗(yàn)示范,集成密植滴灌水肥一體化精準(zhǔn)調(diào)控技術(shù),為下一步該技術(shù)在我區(qū)不同區(qū)域示范推廣提供了技術(shù)儲(chǔ)備。
 
  (三)提質(zhì)增效情況
 
  玉米密植精準(zhǔn)調(diào)控高產(chǎn)技術(shù)是能夠同時(shí)實(shí)現(xiàn)增產(chǎn)、節(jié)水、減肥、控膜、省工的新技術(shù),具有廣泛的適用性。與常規(guī)種植相比,應(yīng)用玉米密植精準(zhǔn)調(diào)控高產(chǎn)技術(shù),種植密度可提高500-1000株,平均增產(chǎn)100公斤/畝以上,增加畝收益200元左右。同時(shí),該技術(shù)解決了玉米高產(chǎn)與節(jié)水減肥控膜的矛盾,可實(shí)現(xiàn)節(jié)水40%左右,肥料利用率提高25%左右。
 
  (四)技術(shù)獲獎(jiǎng)情況
 
  2023年全國農(nóng)業(yè)十大引領(lǐng)技術(shù),2022-2023年內(nèi)蒙古自治區(qū)農(nóng)牧業(yè)主推技術(shù)。
 
  二、技術(shù)要點(diǎn)
 
  (一) 選地與整地
 
  選擇具有灌溉條件、土壤肥力條件較好的地塊。播種前進(jìn)行耕翻作業(yè),要求打破犁底層,保證土地整平、整碎、整松、無坷垃,田間干凈整潔。進(jìn)行滅茬翻耕,要求秸稈全部翻入土壤,翻耕深度大于30 cm;翻垡均勻、不拉溝、不漏犁,翻耕后不露根茬和秸稈。對(duì)于翻耕后雜草、秸稈、根茬較多地塊,需進(jìn)行清田作業(yè)。
 
  (二)種子選擇與處理
 
  選擇國家或自治區(qū)審定,在當(dāng)?shù)匾逊N植并表現(xiàn)優(yōu)良的耐密、抗倒、適應(yīng)機(jī)械精量點(diǎn)播和機(jī)械收獲的品種。應(yīng)選用經(jīng)過精選、分級(jí)處理的玉米種子,玉米種子質(zhì)量應(yīng)符合GB 4404.1的規(guī)定,且發(fā)芽率達(dá)到93%以上。種子宜進(jìn)行進(jìn)行包衣,對(duì)缺乏有效成分種衣劑包衣效果不好的種子,應(yīng)選用針對(duì)目標(biāo)病蟲害的種衣劑采取二次包衣。二次包衣時(shí),應(yīng)在播前1 d~10 d包衣晾干、裝袋。
 
  (三)合理密植
 
  根據(jù)品種特性、土壤肥力、水利條件、光照條件和地形等因素合理確定種植密度。鼓勵(lì)合理密植,在東部區(qū)補(bǔ)充灌溉區(qū)具有淺埋滴灌條件的推薦種植密度 5500~7000 株/畝,無灌溉條件的雨養(yǎng)地區(qū)推薦4500~6000 株/畝;在中西部灌溉區(qū)具有滴灌條件的推薦種植密度6000~7500株/畝,無滴灌條件的地區(qū)推薦5000~6500株/畝。早熟品種適當(dāng)增加種植密度。土壤肥力低、生產(chǎn)條件差的地塊,推薦選品種適宜種植密度的下限值;土壤中上等肥力、生產(chǎn)條件好的地塊,選品種適宜種植密度的上限值。
 
  (四)適期播種
 
  當(dāng)5 cm~10 cm地溫穩(wěn)定通過10℃即可播種。根據(jù)品種特性、水肥條件、積溫等因素合理確定種植密度,播種深度4 cm~5 cm,鎮(zhèn)壓緊實(shí)。播種前測(cè)試并保證滴灌管網(wǎng)正常,滴灌管網(wǎng)工程建設(shè)要求符合DB15/T 1335規(guī)定,及時(shí)安裝節(jié)水設(shè)備,堅(jiān)持做到邊播種邊裝管。采取導(dǎo)航單粒精量播種,作業(yè)質(zhì)量應(yīng)符合NY/T 503的規(guī)定,做到播行筆直、下籽均勻、接行準(zhǔn)確、播深適宜、鎮(zhèn)壓緊實(shí)、到頭到邊。種肥根據(jù)目標(biāo)產(chǎn)量,精準(zhǔn)施用,用量不宜過大。一般全部磷肥、鉀肥,15~25%的氮肥作種肥,氮肥的純氮量不宜超過2 kg/畝。種肥施在種子側(cè)下方 7~8 cm 深處(距離種子5 cm處)。
 
  (五) 田間管理
 
  1.中耕
 
  苗期中耕2次~3次,第一次旋耕除草,第二次深中耕。深度14 cm~18 cm,護(hù)苗帶8 cm~10 cm,做到不鏟苗、不埋苗、不拉溝、不留隔墻、不起大土塊,達(dá)到行間平、松、碎。
 
  2.水肥管理
 
  根據(jù)降雨量、土壤墑情及保水能力等因素確定灌溉次數(shù)和灌溉量。在有效降雨量較為充足,保水保肥良好的地塊,整個(gè)生育期一般滴灌6次~7次;在有效降雨量不足或保水保肥效果較差的地塊,可適當(dāng)增加滴灌次數(shù)和滴灌量。采用干播濕出技術(shù),播種后及時(shí)滴水出苗,檢查滴管并確定其正常運(yùn)行,使灌溉均勻一致,保證出苗的均勻一致性,根據(jù)天氣、土壤水墑情適當(dāng)調(diào)整滴水量,一般每畝滴水10 m3~30 m3。一般6月中旬滴拔節(jié)水,一般每畝滴水20m3~30 m3 ,以后田間持水量低于70%時(shí)及時(shí)灌水,每次灌溉20 m3/畝左右,9月中旬停水。追肥以氮肥為主配施微肥,氮肥一般采取前控、中促、后補(bǔ)的原則,通常在玉米拔節(jié)期、大喇叭口期、抽雄前、吐絲后、灌漿期等生長關(guān)鍵時(shí)期追肥。肥時(shí)可額外添加磷酸二氫鉀1 kg,壯稈、促早熟。追肥結(jié)合滴水進(jìn)行,先將肥料在施肥灌中充分溶解,施肥前先滴清水30 min以上,待滴灌帶得到充分清洗,檢查田間給水一切正常后開始施肥。施肥結(jié)束后,再連續(xù)滴灌30 min以上,將管道中殘留的肥液沖凈,防止化肥殘留結(jié)晶阻塞滴灌毛孔。
 
  3.化學(xué)調(diào)控
 
  6片~8片展開葉期,每畝葉面均勻噴施羥烯·乙烯利、玉黃金或噸田寶等玉米專用生長調(diào)節(jié)劑,具體用量參照使用說明。要求在無風(fēng)無雨天的早晨或傍晚噴施,力求噴施均勻,不要重復(fù)噴施,也不要漏噴。
 
  4.病蟲草害防治
 
  在玉米播種后出苗前或播種同時(shí)進(jìn)行封閉除草作業(yè),選擇符合GB/T 8321要求的除草劑,噴施除草劑應(yīng)根據(jù)打藥車的噴幅做好標(biāo)記,做到不重不漏。作業(yè)時(shí)嚴(yán)禁在地頭、地中停車。根據(jù)當(dāng)?shù)赜衩撞∠x害發(fā)生規(guī)律合理選用農(nóng)藥配種及用量進(jìn)行防治,農(nóng)藥使用應(yīng)符合GB/T 8321??刹捎酶叩叵秶娝帣C(jī)或植保無人機(jī)配藥防治,植保作業(yè)應(yīng)按照NY/T 1276的規(guī)定進(jìn)行。
 
  (六)收獲
 
  收獲前及時(shí)回收滴灌帶。根據(jù)種植行距及作業(yè)質(zhì)量要求選擇合適的收獲機(jī)械。玉米進(jìn)入完熟期,可進(jìn)行機(jī)械收獲。當(dāng)玉米籽粒含水量不大于25 %時(shí),可進(jìn)行籽粒收獲,一次完成摘穗、剝皮、脫粒,同時(shí)進(jìn)行莖稈處理(切段青貯或粉碎還田)等項(xiàng)作業(yè);當(dāng)玉米籽粒含水量大于25 %時(shí),應(yīng)采取摘穗收獲方式。收獲后的玉米要進(jìn)行晾曬或烘干,一般玉米籽粒含水量在14 %以下可安全貯藏。
 
  (七)秸稈處理
 
  玉米收獲后,秸稈應(yīng)進(jìn)行粉碎還田或回收處理。秸稈粉碎還田時(shí),莖稈粉碎長度為3 cm~5 cm為宜,深翻25cm以上,將粉碎的玉米秸稈全部翻入土壤下層。
 
  三、適宜區(qū)域
 
  該技術(shù)重點(diǎn)在具有滴灌條件且可規(guī)?;N植區(qū)域推廣。
 
  四、注意事項(xiàng)
 
  一是選用國家或自治區(qū)審定或引種備案的、適期的品種;
 
  二是做到適期早播,滴水齊苗,適當(dāng)蹲苗;
 
  三是根據(jù)品種特性、水肥條件、積溫等因素合理增加種植密度;
 
  四是滴水施肥要按照“少量多次”原則,在玉米生育后期也要適量滴水施肥;
 
  五是要及時(shí)化控。
 
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