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農(nóng)業(yè)機(jī)械化管理司關(guān)于印發(fā)大豆機(jī)械化收獲減損技術(shù)指導(dǎo)意見的函

2021-09-24 10:12:13 來源:農(nóng)機(jī)化司 閱讀量:19735 評(píng)論

導(dǎo)讀:我司組織農(nóng)業(yè)農(nóng)村部農(nóng)業(yè)機(jī)械化總站和農(nóng)作物生產(chǎn)全程機(jī)械化推進(jìn)專家指導(dǎo)組制定了大豆機(jī)械化收獲減損技術(shù)指導(dǎo)意見,現(xiàn)印發(fā)給你們。請(qǐng)結(jié)合實(shí)際,加強(qiáng)作業(yè)質(zhì)量標(biāo)準(zhǔn)宣貫和技術(shù)培訓(xùn)指導(dǎo),切實(shí)推進(jìn)糧食機(jī)收提質(zhì)減損工作,力爭(zhēng)“顆粒歸倉”,為保障國家糧食安全提供更有力的機(jī)械化支撐。

  【農(nóng)機(jī)網(wǎng) 通知公告】 農(nóng)機(jī)科〔2021〕93號(hào)
 
  各省、自治區(qū)、直轄市及計(jì)劃單列市農(nóng)業(yè)農(nóng)村(農(nóng)牧)廳(局、委),新疆生產(chǎn)建設(shè)兵團(tuán)農(nóng)業(yè)農(nóng)村局,北大荒農(nóng)墾集團(tuán)有限公司,廣東省農(nóng)墾總局,各有關(guān)單位:
 
  為貫徹落實(shí)習(xí)近平總書記關(guān)于“厲行節(jié)約、反對(duì)浪費(fèi)”重要指示精神和《農(nóng)業(yè)農(nóng)村部辦公廳關(guān)于將機(jī)收減損作為糧食生產(chǎn)機(jī)械化主要工作常抓不懈的通知》(農(nóng)辦機(jī)〔2021〕10號(hào))要求,強(qiáng)化“減損就是增產(chǎn)”意識(shí),毫不放松抓好秋糧作物機(jī)械化生產(chǎn),進(jìn)一步減少糧食機(jī)械化收獲損失,我司組織農(nóng)業(yè)農(nóng)村部農(nóng)業(yè)機(jī)械化總站和農(nóng)作物生產(chǎn)全程機(jī)械化推進(jìn)專家指導(dǎo)組制定了大豆機(jī)械化收獲減損技術(shù)指導(dǎo)意見,現(xiàn)印發(fā)給你們。請(qǐng)結(jié)合實(shí)際,加強(qiáng)作業(yè)質(zhì)量標(biāo)準(zhǔn)宣貫和技術(shù)培訓(xùn)指導(dǎo),切實(shí)推進(jìn)糧食機(jī)收提質(zhì)減損工作,力爭(zhēng)“顆粒歸倉”,為保障國家糧食安全提供更有力的機(jī)械化支撐。
 
  農(nóng)業(yè)農(nóng)村部農(nóng)業(yè)機(jī)械化管理司
 
  2021年9月16日
 
大豆機(jī)械化收獲減損技術(shù)指導(dǎo)意見
 
農(nóng)業(yè)農(nóng)村部農(nóng)業(yè)機(jī)械化管理司 
農(nóng)業(yè)農(nóng)村部農(nóng)業(yè)機(jī)械化總站 
農(nóng)業(yè)農(nóng)村部農(nóng)作物生產(chǎn)全程機(jī)械化推進(jìn)專家指導(dǎo)組
 
(2021年9月)
 
  本技術(shù)指導(dǎo)意見適用于大豆機(jī)械化聯(lián)合收獲和分段收獲。在一定區(qū)域內(nèi),大豆品種及種植模式應(yīng)盡量規(guī)范一致,大豆及田塊條件適于機(jī)械化收獲,農(nóng)機(jī)手應(yīng)選擇與大豆種植行距、適宜收獲方式對(duì)應(yīng)的收割機(jī)并提前檢查調(diào)試好機(jī)具,確定適宜收獲期,嚴(yán)格按照大豆機(jī)收作業(yè)質(zhì)量標(biāo)準(zhǔn)和操作規(guī)程,注意安全生產(chǎn),減少收獲環(huán)節(jié)損失,提高生產(chǎn)作業(yè)質(zhì)量和效率。
 
  一、作業(yè)前機(jī)具檢查調(diào)試
 
  開始作業(yè)前要保持機(jī)具良好技術(shù)狀態(tài),預(yù)防和減少作業(yè)故障,提高工作質(zhì)量和效率。應(yīng)做好以下檢查準(zhǔn)備工作。
 
  (一)機(jī)具檢查
 
  駕駛操作前要檢查各操縱裝置功能是否正常;離合器、制動(dòng)踏板自由行程是否適當(dāng);發(fā)動(dòng)機(jī)機(jī)油、冷卻液是否適量;儀表板各指示是否正常;輪胎氣壓是否正常;傳動(dòng)鏈、張緊輪是否松動(dòng)或損傷,運(yùn)動(dòng)是否靈活可靠;檢查和調(diào)整各傳動(dòng)皮帶的張緊度,防止作業(yè)時(shí)皮帶打滑;重要部位螺栓、螺母有無松動(dòng);有無漏水、滲漏油現(xiàn)象;割臺(tái)、機(jī)架等部件有無變形等,機(jī)械收割保證刀片鋒利,人工收割刀要磨快,減少損失。備足備好田間作業(yè)常用工具、零配件、易損件及油料等,以便出現(xiàn)故障時(shí)能夠及時(shí)排除。
 
  (二)試割
 
  正式開始作業(yè)前要選擇有代表性的地塊進(jìn)行試割。試割作業(yè)行進(jìn)長度以50米左右為宜,根據(jù)作物、田塊的條件確定適合的作業(yè)速度,對(duì)照作業(yè)質(zhì)量標(biāo)準(zhǔn)仔細(xì)檢測(cè)試割效果(損失率、破碎率、含雜率,有無漏割、堵塞、跑漏等異常情況),并以此為依據(jù)對(duì)相應(yīng)部件(如撥禾輪轉(zhuǎn)速、撥禾輪位置、割刀頻率、脫粒滾筒轉(zhuǎn)速、脫粒間隙、導(dǎo)流板角度、作業(yè)速度、風(fēng)機(jī)轉(zhuǎn)速、風(fēng)門開度、篩子開度、振動(dòng)篩頻率等)進(jìn)行調(diào)整。調(diào)整后再進(jìn)行試割并檢測(cè),直至達(dá)到質(zhì)量標(biāo)準(zhǔn)和農(nóng)戶要求為止。作物品種、田塊條件有變化時(shí)要重新試割和調(diào)試機(jī)具。試割過程中,應(yīng)注意觀察、傾聽機(jī)器工作狀況,發(fā)現(xiàn)異常及時(shí)解決。
 
  二、確定適宜收獲期
 
  準(zhǔn)確判斷確定適宜收獲期,防止過早或過晚收獲對(duì)大豆的產(chǎn)量和品質(zhì)產(chǎn)生不利影響,實(shí)現(xiàn)大豆豐產(chǎn)增收。
 
  (一)機(jī)械聯(lián)合收獲期的確定
 
  機(jī)械收獲的最佳收獲期在黃熟期后至完熟期之間,此期間大豆籽粒含水率在15%—25%,莖稈含水率45%—55%,豆葉全部脫落,豆粒歸圓,搖動(dòng)大豆植株會(huì)聽到清脆響聲。
 
  (二)分段收獲期的確定
 
  分段收獲方式的最佳收獲期為黃熟期,此時(shí)葉片脫落70%—80%,籽粒開始變黃,少部分豆莢變成原色,個(gè)別仍呈現(xiàn)青綠色。
 
  (三)選擇適宜作業(yè)時(shí)段
 
  收割大豆應(yīng)該選擇早、晚時(shí)間段收割;避開露水時(shí)段,以免收獲的大豆產(chǎn)生“泥花臉”;避開中午高溫時(shí)段,以免炸莢造成損失。
 
  三、減少機(jī)收環(huán)節(jié)損失的措施
 
  作業(yè)前要實(shí)地察看作業(yè)田塊、種植品種、自然高度、植株倒伏、大豆產(chǎn)量等情況,調(diào)試好機(jī)具狀態(tài)。作業(yè)過程中,嚴(yán)格執(zhí)行作業(yè)質(zhì)量要求,隨時(shí)查看作業(yè)效果,發(fā)現(xiàn)損失變多等情況要及時(shí)調(diào)整機(jī)具參數(shù),使機(jī)具保持良好狀態(tài),保證收獲作業(yè)低損、高效。
 
  (一)檢查作業(yè)田塊
 
  檢查去除田里木樁、石塊等硬雜物,了解田塊的泥腳情況,對(duì)可能造成陷車或傾翻、跌落的地方做出標(biāo)識(shí),以保證安全作業(yè)。對(duì)地塊中的溝渠、田埂﹑通道等予以平整,并將地里水井、電桿拉線、樹樁等不明顯障礙進(jìn)行標(biāo)記。
 
  (二)選擇合適的收獲方式
 
  東北春大豆及黃淮海夏大豆產(chǎn)區(qū)宜選擇聯(lián)合收獲方式,南方大豆產(chǎn)區(qū)依據(jù)種植模式和天氣情況,合理選擇聯(lián)合收獲方式與分段收獲方式。
 
  1.聯(lián)合收獲
 
  采用聯(lián)合收割機(jī)直接收獲大豆,首選專用大豆聯(lián)合收割機(jī),也可以選用多用聯(lián)合收割機(jī)或借用小麥聯(lián)合收割機(jī),但一定要更換大豆收獲專用的撓性割臺(tái)。大豆機(jī)械化收獲時(shí),要求割茬高度一般在4—6厘米,要以不漏莢為原則,盡量放低割臺(tái)。為防止炸莢損失,要保證割刀鋒利,割刀間隙需符合要求,減少割臺(tái)對(duì)豆枝的沖擊和拉扯;適當(dāng)調(diào)節(jié)撥禾輪的轉(zhuǎn)速和高度,一般早期的豆枝含水率較高,撥禾輪轉(zhuǎn)速可適當(dāng)提高,晚期的豆枝含水率較低,撥禾輪轉(zhuǎn)速需要相對(duì)降低,并對(duì)撥禾輪的輪板加橡皮等緩沖物,以減小撥禾輪對(duì)豆莢的沖擊。在大豆收割機(jī)作業(yè)前,根據(jù)豆枝含水率、喂入量、破碎率、脫凈率等情況,調(diào)整機(jī)器作業(yè)參數(shù)。一般調(diào)整脫粒滾筒轉(zhuǎn)速為500—700轉(zhuǎn)/分,脫粒間隙30—35毫米。在收獲時(shí)期,一天之內(nèi)豆枝和籽粒含水量變化很大,同樣應(yīng)根據(jù)含水量和實(shí)際脫粒情況及時(shí)調(diào)整滾筒的轉(zhuǎn)速和脫粒間隙,降低脫粒破損率。要求割茬不留底莢,不丟枝,機(jī)收作業(yè)時(shí)按照《大豆聯(lián)合收割機(jī) 作業(yè)質(zhì)量》NY/T 738-2020標(biāo)準(zhǔn)執(zhí)行,損失率≤5%,含雜率≤3%,破碎率≤5%,莖稈切碎長度合格率≥85%,收割后的田塊應(yīng)無漏收現(xiàn)象。
 
  2.分段收獲
 
  分段收獲有收割早、損失小,炸莢、豆粒破損和泥花臉少的優(yōu)點(diǎn)。割曬放鋪要求連續(xù)不斷空,厚薄一致,大豆鋪底與機(jī)車前進(jìn)方向呈30度角,大豆鋪放在壟臺(tái)上,豆枝與豆枝之間相互搭接,以防拾禾掉枝,做到底莢割凈、不漏割,揀凈,減少損失。割后5—10天,籽粒含水量在15%以下,及時(shí)拾禾脫粒。要求綜合損失不超過3%,拾禾脫粒損失不超過2%,收割損失不超過1%。
 
  (三)選擇適用機(jī)型
 
  1.北方春大豆產(chǎn)區(qū)
 
  主要采用大型大豆聯(lián)合收割機(jī)或改裝后的大型自走式稻麥聯(lián)合收割機(jī)。
 
  2.黃淮海夏大豆產(chǎn)區(qū)
 
  主要采用中型的輪式大豆收割機(jī)或改裝后的小麥聯(lián)合收割機(jī)。
 
  3.南方大豆產(chǎn)區(qū)
 
  主要采用小型履帶式大豆聯(lián)合收割機(jī)或改裝后的水稻聯(lián)合收割機(jī)。
 
  4.機(jī)具調(diào)整
 
  改裝后的稻麥聯(lián)合收割機(jī)用于收割大豆,應(yīng)注意適合于大豆收割的關(guān)鍵作業(yè)部件更換和作業(yè)參數(shù)調(diào)整。
 
  (1)大豆專用割臺(tái)。更換適合于大豆收割的撓性割臺(tái),并依據(jù)收獲大豆植株高度調(diào)整撥禾輪前后位置、上下位置,依據(jù)收獲大豆底莢高度調(diào)整割臺(tái)高度使割刀離地高度約5—10厘米。
 
  (2)脫粒分離系統(tǒng)。更換適合于大豆收獲作業(yè)的脫粒分離系統(tǒng),中小型聯(lián)合收割機(jī)建議采用閉式弓齒脫粒滾筒,大型聯(lián)合收割機(jī)建議采用“紋桿塊+分離齒”式復(fù)合脫粒滾筒,凹板篩建議采用圓孔凹板篩,脫粒滾筒與凹板篩在結(jié)構(gòu)、尺寸上應(yīng)做到匹配,確保脫粒間隙在30—35毫米。
 
  (3)清選系統(tǒng)。中小型聯(lián)合收割機(jī)可采用常規(guī)魚鱗篩,以調(diào)整風(fēng)機(jī)轉(zhuǎn)速、魚鱗篩開度等清選作業(yè)參數(shù)為主,有條件的可改裝導(dǎo)風(fēng)板結(jié)構(gòu),增加風(fēng)道數(shù)量至3個(gè);大型聯(lián)合收割機(jī)建議使用加長魚鱗篩,有條件的可在篩面安裝逐稿輪。
 
  (4)籽粒輸送系統(tǒng)。更換適合于大豆低破碎的輸送系統(tǒng),升運(yùn)器建議采用勺鏈?zhǔn)缴\(yùn)器,復(fù)脫攪龍建議采用尼龍材質(zhì)攪龍。
 
  (四)正確開出割道
 
  作業(yè)前必須將要收割的地塊四角進(jìn)行人工收割,按照機(jī)車的前進(jìn)方向割出一個(gè)機(jī)位。然后,從易于機(jī)車下田的一角開始,沿著田的右側(cè)割出一個(gè)割幅,割到頭后倒退5—8米,然后斜著割出第二個(gè)割幅,割到頭后再倒退5—8米,斜著割出第三個(gè)割幅;用同樣的方法開出橫向方向的割道。規(guī)劃較整齊的田塊,可以把幾塊田連接起來開好割道,割出三行寬的割道后再分區(qū)收割,提高收割效率。
 
  (五)選擇行走路線
 
  行走路線最常用的有以下兩種:1.四邊收割法。對(duì)于長和寬相近、面積較大的田塊,開出割道后,收割一個(gè)割幅到割區(qū)頭,升起割臺(tái),沿割道前進(jìn)5—8米后,邊倒車邊向右轉(zhuǎn)彎,使機(jī)器橫過90度,當(dāng)割臺(tái)剛好對(duì)正割區(qū)后,停車,掛上前進(jìn)擋,放下割臺(tái),再繼續(xù)收割,直到將大豆收完。2.左旋收割法。對(duì)于長寬相差較大、面積較小的田塊,沿田塊兩頭開出的割道,長方向割到割區(qū)頭,不用倒車,繼續(xù)前進(jìn),左轉(zhuǎn)彎繞到割區(qū)另一邊進(jìn)行收割。
 
  (六)選擇作業(yè)速度
 
  作業(yè)過程中應(yīng)盡量保持發(fā)動(dòng)機(jī)在額定轉(zhuǎn)速下運(yùn)轉(zhuǎn),機(jī)器直線行走,避免邊割邊轉(zhuǎn)彎,壓倒部分大豆造成漏割,增加損失。地頭作業(yè)轉(zhuǎn)彎時(shí),不要松油門,也不可速度過快,防止清選篩面上的大豆甩向一側(cè)造成清選損失,保證收獲質(zhì)量。若田間雜草太多,應(yīng)考慮放慢收割機(jī)前進(jìn)速度,減少喂入量,防止出現(xiàn)堵塞和大豆含雜率過高等情況。
 
  (七)收割潮濕大豆
 
  在季節(jié)性搶收時(shí),如遇到潮濕大豆較多的情況,應(yīng)經(jīng)常檢查凹板篩、清選篩是否堵塞,注意及時(shí)清理。有露水時(shí),要等到露水消退后再進(jìn)行作業(yè)。
 
  (八)收割倒伏大豆
 
  收獲倒伏大豆時(shí),可通過安裝“扶倒器”和“防倒伏彈齒”裝置,盡量減少倒伏大豆收獲損失,收割倒伏大豆時(shí)應(yīng)先放慢作業(yè)速度,原則上倒伏角小于45度時(shí)順向作業(yè);倒伏角45度—60度時(shí)逆向作業(yè);在倒伏角大于60度時(shí),要盡量降低收割速度。
 
  (九)規(guī)范作業(yè)操作
 
  作業(yè)時(shí)應(yīng)根據(jù)大豆品種、高度、產(chǎn)量、成熟程度及秸稈含水率等情況來選擇作業(yè)擋位,用作業(yè)速度、割茬高度及割幅寬度來調(diào)整喂入量,使機(jī)器在額定負(fù)荷下工作,盡量降低夾帶損失,避免發(fā)生堵塞故障。收割采用“對(duì)行盡量滿幅”原則,作業(yè)時(shí)不要“貪寬”,收割機(jī)的分禾器位置應(yīng)位于行與行之間,避免收割機(jī)的行走造成大豆的拋撒損失。采用履帶式收割機(jī)作業(yè)的時(shí)候,要針對(duì)不同濕度的田塊對(duì)履帶張緊度進(jìn)行調(diào)整,泥濘地塊適當(dāng)調(diào)緊一些,干燥地塊適當(dāng)調(diào)松,以提高機(jī)具通過能力、減少履帶磨損。要經(jīng)常檢查凹版篩和清選篩的篩面,防止被泥土或潮濕物堵死造成糧食損失,如有堵塞要及時(shí)清理。
 
  (十)在線監(jiān)測(cè)
 
  有條件的可以在收割機(jī)上裝配損失率、含雜率、破碎率在線監(jiān)測(cè)裝置,駕駛員根據(jù)在線監(jiān)測(cè)裝置提示的相關(guān)指標(biāo)、曲線,適時(shí)調(diào)整行走速度、喂入量、留茬高度等作業(yè)狀態(tài)參數(shù),以保持低損失率、低含雜率、低破碎率的良好作業(yè)狀態(tài)。
 
  四、培訓(xùn)與監(jiān)督
 
  機(jī)手、種植戶和從事收獲質(zhì)量監(jiān)督的鄉(xiāng)鎮(zhèn)農(nóng)機(jī)管理人員應(yīng)經(jīng)過培訓(xùn),掌握大豆品種、含水率、種植模式、收割地形等方面的農(nóng)藝知識(shí),掌握收割機(jī)的正確使用、維護(hù)保養(yǎng)知識(shí)以及作業(yè)質(zhì)量標(biāo)準(zhǔn)要求。鼓勵(lì)種植戶與機(jī)手簽訂收獲作業(yè)損失協(xié)議,鄉(xiāng)鎮(zhèn)農(nóng)機(jī)管理人員可通過巡回檢查監(jiān)督作業(yè)損失等情況,并在損失偏大或出現(xiàn)其它不合乎要求情形時(shí),要求機(jī)手調(diào)整,仍然不合要求的,應(yīng)更換作業(yè)機(jī)器。
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