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地點: 西安市
開展時間: 2025-03-13
舉辦單位: 中國機械工業(yè)聯合會、中國通信工業(yè)協會
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地點: 武漢市
開展時間: 2025-03-14
舉辦單位: 北京鼎成創(chuàng)贏國際展覽有限公司
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地點: 成都市
開展時間: 2025-03-15
舉辦單位: 四川省農機服務協會、四川省農業(yè)機械學會、四川省農業(yè)工程學會、四川省5G產業(yè)聯盟智慧農業(yè)專委會、中國天
《花生機械化收獲減損技術指導意見》
2024-09-13
10:07:58
來源:農業(yè)農村部農業(yè)機械化總站 閱讀量:14553
評論
關于發(fā)布花生機械化收獲減損技術指導意見的通知
農機化總站〔2024〕129號
各有關單位:
我國花生機械化收獲水平超過55%,特別是北方地區(qū)花生機械化收獲水平超過80%,成為花生收獲主要生產方式,花生機械化收獲的損失率、含雜率、破碎率越來越得到行業(yè)和社會的關注。為此,我站組織農業(yè)農村部農作物生產全程機械化專家指導組花生專業(yè)組,制定了花生機械化收獲減損技術指導意見。請各花生主產省份農機鑒定推廣機構根據實際情況,加強作業(yè)質量標準宣貫和技術培訓指導,切實推進花生機械化收獲減損工作,推動花生生產機械化健康發(fā)展。
農業(yè)農村部農業(yè)機械化總站
2024年9月12日
花生機械化收獲減損技術指導意見
農業(yè)農村部農業(yè)機械化總站
農業(yè)農村部農作物生產全程機械化專家指導組花生專業(yè)組
本技術指導意見適用于春播、夏播花生機械化收獲?;ㄉ鷻C械化收獲減少損失、提高清潔度的關鍵在于:一是檢查調試好
收獲機,使機具在最佳狀態(tài)下高質高效作業(yè);二是準確把握適收期和作業(yè)條件,在最佳的時機收獲;三是選擇適宜的機械化收獲方式與機具;四是及時烘干,減少霉變;五是加強機收培訓與監(jiān)督。
一、作業(yè)前機具檢查調試
(一)機具檢查
作業(yè)季節(jié)開始前要依據產品使用說明書對半喂入花生聯合收獲機、全喂入花生撿拾收獲機、花生
挖掘機、場上固定式
花生摘果機進行一次全面檢查與保養(yǎng),確保機具在整個收獲期能正常工作。
1.針對自帶動力的半喂入花生聯合收獲機、全喂入花生撿拾收獲機,駕駛操作前要檢查各操縱裝置功能是否正常;離合器、制動踏板自由行程是否適當;發(fā)動機機油、冷卻液是否適量;有無漏水、滲漏油現象;儀表板各指示是否正常;輪胎氣壓是否正常;履帶對軌張緊是否正常;清理散熱器,每班次間隙及時清理散熱器,將散熱器上的草屑、灰塵清理干凈,防止散熱器堵塞,引起發(fā)動機過熱,水箱溫度過高;檢查空氣濾清器,每班次前檢查空氣濾清器濾網堵塞情況,做必要清理;檢查各傳動鏈、張緊輪是否松動或損傷,運動是否靈活可靠;運動及連接部分的緊固件和連接件,重要部位螺栓、螺母,有無松動;檢查撿拾收獲臺、挖掘夾拔起秧、機架等部件有無變形等;挖掘鏟是否平整鋒利、撿拾彈齒是否變形缺失;果土分離、果秧分離、果雜分離關鍵部件是否有松脫、變形、損壞;檢查和調整各輸送皮帶、輸送鏈的張緊度,防止作業(yè)時打滑失效;對機具莢果輸送部位、集果部位的殼體、箱體倉體、連接部、周邊間隙等密封性進行檢測,避免漏果;備足好田間作業(yè)常用工具、零配件、易損件及燃料等,以便出現故障時能夠及時排除。
2.針對花生挖掘機,重點檢查挖掘、輸送(夾持或升運)、清土擊振、翻秧和鋪放環(huán)節(jié)關鍵部件運動是否順暢可靠。
3.針對場上固定式花生摘果機,重點檢查動力驅動是否可靠;喂料輸送,果、秧、雜分離關鍵部件是否有松脫、變形、損壞;整體傳動運行是否順暢可靠。
(二)試收與機具調整
正式開始作業(yè)前要選擇有代表性的地塊進行試收,試收作業(yè)行進長度以50米左右為宜,對照作業(yè)質量標準仔細檢查試收效果,相關作業(yè)部件參數調整后再次進行試收并檢查,直至達到質量標準為止。作物品種、田塊條件有變化時要重新試收和調試機具。試收過程中,應注意觀察、傾聽機器工作狀況,發(fā)現異常及時解決。
1.半喂入花生聯合收獲機
檢查總損失率(地面落果率、埋果率、未摘凈率)、含雜率、破碎率,有無漏收、堵塞、跑漏等異常情況,對作業(yè)速度和相應作業(yè)部件參數進行檢查調整。
(1)分扶禾器。錐輥式分扶禾器的兩側距離要根據植株狀態(tài)、壟面寬度等條件合理調節(jié)。距離過小,有些倒伏秧蔓漏在錐輥外側,造成漏夾損失現象;距離過大,錐輥前端不能緊貼地面,秧蔓從錐輥下漏過,同樣造成漏夾損失現象。
(2)挖掘鏟。通過調節(jié)挖掘鏟上下移動、左右轉動位置調整挖掘點、入土深度及鏟間距,確認松土鏟尖在夾持拔取口稍前方,確保在拔取前可有效松土與鏟斷主根,減少拔取損失。
(3)夾拔起秧輸送鏈。根據當地種植農藝和植株特性合理調節(jié)夾拔起秧輸送鏈喂入口夾持角,以防角度過小導致收獲漏夾持現象或角度過大導致推秧現象;檢查夾持輸送鏈部件與行走系統(tǒng)同路傳動的可靠性,作業(yè)時根據實際輸送是否順暢,實時調整行走速度。
(4)清土機構。根據作業(yè)時的土壤條件、植株特性,合理調整清土機構頻率和角振幅,在落果損失率適當時盡可能確保較低的帶土率。
(5)摘果輥。根據觀察收獲時表現出來的花生果柄連接強度、果殼強度等生物特性,合理調整摘果輥間距、轉速、與夾持鏈的夾角等參數,盡可能減低破碎率和提高摘凈率。
(6)清選系統(tǒng)。通過調整清選風機進風口調節(jié)板或風機轉速,合理調整清選風機風量,秧蔓潮濕時風量應調大,干燥時應適當調小,風向應調至清選篩的中前方;通過調整清選篩曲柄轉速、調換偏心套,合理調整清選篩振幅、振頻,降低清選吹出損失和含雜率。
2.全喂入花生撿拾收獲機
檢查總損失率(地面落果率、未摘凈率)、含雜率、破碎率,有無漏收、堵塞、跑漏等異常情況,對作業(yè)速度和相應作業(yè)部件參數進行檢查調整。
(1)撿拾收獲臺。通過調節(jié)限深輪上下高度,合理調整撿拾收獲臺離地間隙;合理調整壓秧器與撿拾彈齒組配距離、撿拾彈齒與輸送攪龍組配距離以及撿拾彈齒、輸送攪龍的轉速,確保撿拾收獲臺壓秧、撿拾、輸送交接作業(yè)順暢,以提高撿拾收獲環(huán)節(jié)撿拾率、降低落果損失。
(2)摘果滾筒。根據花生果秧田間晾曬后干濕狀態(tài)、喂入量大小和摘果效果,合理調整摘果滾筒轉速及滾筒與凹板篩的摘果間隙,在提高摘凈率、減少夾帶損失的前提下減少莢果破碎破損,同時可以降低清選篩負荷,保證最佳的收獲作業(yè)效果。
(3)清選系統(tǒng)。應根據花生果秧田間晾曬后干濕狀態(tài)和喂入量大小等,通過調整清選風機進風口調節(jié)板或風機轉速,合理調整清選風機風量;通過調整清選篩曲柄轉速、調換偏心套,合理調整清選篩振幅、振頻,以降低清選吹出損失和含雜率。合理調節(jié)復選機械式提升裝置的橫向攪龍輸送和垂直提升部件的速度及組配位置,避免輸送過程中及交接處對莢果造成擠壓損失。
(4)莢果輸送裝置。應根據喂入量、莢果輸送量大小和輸送效果等,合理調節(jié)氣力提升式莢果輸送裝置風機轉速以調整輸送管道內風壓和風量,保證順暢輸送作業(yè)的前提下避免莢果與管壁碰撞、莢果間擠壓造成的莢果損傷。
3.花生挖掘機
檢查地面落果率、埋果率、含土率,有無壅土阻塞、秧蔓纏繞,對作業(yè)速度和相應作業(yè)部件參數進行檢查調整。
(1)升運鏈式花生挖掘機。根據土質條件、壟形條件、不同品種根系形態(tài)等,合理調節(jié)限深輪上下高度、三點懸掛的上拉桿長短,保證挖掘鏟具有合適的入土角和入土深度,減小挖掘入土阻力,確保鏟入花生根底部不鏟斷莢果,避免埋果損失;調整保證挖掘鏟入土角與輸送分離升運鏈升運角一致,避免鏟后積土,確保作業(yè)順暢;根據清土效果,合理調節(jié)升運鏈擊振清土裝置的振頻振幅,降低含土率;合理調整攏禾柵角度方向,保證挖掘后的花生植株達到整齊歸攏條鋪田間效果,并盡可能使莢果朝上秧蔓在下鋪放,利于提高田間晾曬效率和減少后續(xù)撿拾收獲落果損失。具有翻秧功能的挖掘機,應調整好升運鏈、翻秧輥的速度和翻秧柵的位置和姿勢,盡可能使莢果朝上鋪放晾曬。
(2)鏟拔起秧花生條鋪機。合理調節(jié)夾拔起秧輸送鏈喂入口夾持角、夾拔起秧輸送鏈和挖掘鏟的組配位置,確保挖掘鏟斷主根與夾拔起秧輸送順暢配合,避免落果埋果損失;合理調整尾部攏禾柵角度方向,保證花生植株整齊條鋪效果。
4.場上固定式花生摘果機
檢查含雜率、破碎率、未摘凈損失率、清選損失率,對作業(yè)速度和相應作業(yè)部件參數進行檢查調整。
(1)全喂入花生摘果機。根據花生果秧田間晾曬后干濕狀態(tài)、喂入量大小和摘果效果,合理調整摘果滾筒的轉速,在提高摘凈率、減少夾帶損失的前提下減少莢果破碎破損。
(2)半喂入花生摘果機。根據喂入量大小和喂入植株料層厚度,合理調節(jié)夾持輸送鏈的輸送速度,盡可能在提升作業(yè)效率的同時保證摘凈率。根據觀察對輥摘果時表現出來的花生果柄連接強度、果殼強度等生物特性,合理調整摘果輥間距、轉速、摘果輥與夾持鏈的夾角等參數,盡可能降低破碎率和提高摘凈率。
二、確定適宜收獲時間和條件
花生機械化收獲適宜時間和條件應根據花生生長情況、土壤和氣候條件來確定。
(一)準確判斷花生適宜收獲期
花生收獲過早,會影響產量和質量;收獲過晚,落果嚴重,影響商品性,進行機械收獲時容易出現地下埋果。一般當花生植株表現衰老,頂端停止生長,上部葉和莖稈變黃,大部分莢果果殼硬化,網紋清晰,種皮變薄,籽仁呈現品種特征、70%的莢果已經成熟時即可收獲。如果需要田間晾曬后熟,可提前2~3天進行機械挖掘。如果收獲后的花生做種用,則可適當提前3~5天收獲。
(二)選擇適宜機收土壤和天氣條件
土壤墑情影響機械收獲。當土壤絕對含水率在10%~18%,手握能成團,手搓較松散,即適合機械收獲;當土壤含水率過高,機械作業(yè)阻力大、功耗大、含雜率高,不適合機械收獲;當含水率過低且土壤板結時,機械收獲落果埋果較多,可適度灌溉補墑,調節(jié)土壤含水率后進行機械收獲。要密切關注天氣變化,盡可能避免或減少降雨天氣的作業(yè)時間。
三、選擇適宜的機械化收獲方式與機具
作業(yè)前要實地察看田塊情況(大小、形狀等)、土壤情況(土質、含水率等)、種植模式(壟作、平作、覆膜、不覆膜等)、花生品種(直立性、半匍匐型等)、生物特性(植株高度、根系深度、結果范圍、果柄強度、秧柄強度等)、長勢狀態(tài)(秧蔓倒伏、秧枝蔓行等)、莢果產量、秧蔓產量等,盡可能做到基本了解,選擇合適的機械化收獲方式和機具,調試好機具狀態(tài)。作業(yè)過程中,嚴格執(zhí)行作業(yè)質量要求,隨時查看作業(yè)效果,發(fā)現損失變多等情況要及時調整機具參數,使機具保持良好狀態(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,對可能造成陷車或傾翻、跌落的地方做出標識,以保證安全作業(yè)。對地塊中的溝渠、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行標記。
(二)選擇適宜的收獲方式與機具
花生機械化收獲方式主要有“一段式”和“兩段式”收獲兩種。機械收獲前要根據產地實際需求和作業(yè)條件選擇適宜的機械化收獲方式與機具。
1.“一段式”機械化收獲
主要是采用半喂入花生聯合收獲機,一次完成挖掘起秧、秧果輸送、清土、摘果、清選、集果和秧蔓成條鋪放。采用該收獲方式具有以下優(yōu)點:一是減少機具下地次數,降低作業(yè)成本;二是降低破損率和裂莢率;三是減少作物占地時間,利于快速騰地倒茬;四是在挖掘起秧和摘果環(huán)節(jié)有效實現秧膜分離。半喂入花生聯合收獲機作業(yè)質量要達到總損失率≤3.2%、含雜率≤4%、破碎率≤2%。
該收獲方式適用于以下需求和產地條件:花生收獲后為鮮食、種用和烘烤需求;壟作覆膜種植、收獲后秧蔓飼料化利用需求大;土壤為團粒結構較好的沙土或沙壤土,以利于起秧和果土分離減少損失,要求土壤絕對含水率為8%~15%;搶收搶種、不具備田間晾曬占地時間條件;具有一定干燥設備條件。
采用“一段式”機械化收獲方式時,收獲后的花生莢果含水率較高,需要及時烘干,使莢果含水率降至10%以下,或及時冷藏,或加工制熟,防止霉變。
2.“兩段式”機械化收獲
主要采用花生挖掘機(田間晾曬)+全喂入花生撿拾收獲機,或花生挖掘機(田間晾曬)+人工撿拾+花生摘果機,或花生挖掘機(鮮秧)+人工撿拾+半喂入花生摘果機。采用該收獲方式具有較廣泛適應性、利于提高生產效率、降低農藝要求、減少后期干燥成本、較好發(fā)揮花生后熟效應等優(yōu)點。“兩段式”花生挖掘機作業(yè)質量要達到總損失率≤3%、埋果率≤2%、含土率≤20%;全喂入花生撿拾收獲機作業(yè)質量要達到總損失率≤5%、含雜率≤8%、破碎率≤5%;花生摘果機作業(yè)質量要達到含雜率≤2%、破碎率(濕摘)≤3.5%、破碎率(干摘)≤4%、未摘凈損失率(濕摘)≤1.2%、清選損失率(干摘)≤1%。
該收獲方式適用于以下需求和產地條件:對莢果破損率和完整性要求相對較低;具備田間晾曬占地時間條件;既可壟作也可平作,種植模式、田間管理等標準化生產程度相對較低;干燥設備條件不充足。其中,對于北方規(guī)模產地、油用需求,適合采用花生挖掘機(田間晾曬)+全喂入花生撿拾收獲機;對于小田塊分散種植、油用需求,適合采用花生挖掘機(田間晾曬)+人工撿拾+花生摘果機;對于丘陵山區(qū)小田塊種植,鮮食、烘烤和種用需求,可采用花生挖掘機(鮮秧)+人工撿拾+半喂入花生摘果機。
采用“兩段式”機械化收獲方式時,對于油用花生,花生挖掘機完成挖掘起秧后,需要將秧蔓在田間晾曬3~5天,使莢果含水率降低到20%以下(通常以手搖莢果,可以聽到莢果內籽仁搖動響聲為準),再用全喂入花生撿拾收獲機完成撿拾摘果收獲,或人工撿拾收集秧果后用場上固定式花生摘果機完成摘果,此時花生莢果含水率較低,收獲后經簡單晾曬后即可貯藏。
四、培訓與監(jiān)督
機手、種植戶和從事收獲質量監(jiān)督的鄉(xiāng)鎮(zhèn)農機管理人員應經過培訓,掌握花生品種、含水率、種植模式、收獲地形等方面的農藝知識,掌握各類花生收獲機具的正確使用、維護保養(yǎng)知識以及作業(yè)質量標準要求?;ㄉ斋@機具出廠時應配有可指導機手正確使用與維護保養(yǎng)的詳盡使用說明書,機具制造企業(yè)還應配有良好的售后服務隊伍,在農民購機用機時開展規(guī)范化操作培訓。鼓勵種植戶與機手簽訂收獲作業(yè)質量協議,鄉(xiāng)鎮(zhèn)農機管理人員可通過巡回檢查監(jiān)督作業(yè)質量等情況,并在損失偏大、含雜過多或出現其他不合乎要求情形時,要求機手調整,仍然不合要求的,應更換作業(yè)機器。
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