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關于印發(fā)《黃淮海地區(qū)夏玉米(大豆)高性能免耕播種機應用指引》的通知

2023-05-22 11:20:14 來源:總站糧作機械處 閱讀量:13078 評論

導讀:總站聯(lián)合農(nóng)業(yè)農(nóng)村部農(nóng)作物生產(chǎn)全程機械化專家指導組制定了《黃淮海地區(qū)夏玉米(大豆)高性能免耕播種機應用指引》。

  農(nóng)機化總站〔2023〕79號
 
  河北、山西、江蘇、安徽、山東、河南、湖北、陜西等省農(nóng)機中心(鑒定站、推廣站):
 
  為貫徹落實《農(nóng)業(yè)農(nóng)村部辦公廳關于進一步做好機械化播種質(zhì)量提升工作的通知》(農(nóng)辦機〔2023〕1號),加快黃淮海地區(qū)高性能播種機示范推廣,全方位提高糧食作物機播質(zhì)量,有效發(fā)揮增產(chǎn)潛力,我站聯(lián)合農(nóng)業(yè)農(nóng)村部農(nóng)作物生產(chǎn)全程機械化專家指導組制定了《黃淮海地區(qū)夏玉米(大豆)高性能免耕播種機應用指引》,切實提高播種機應用效果,供參考使用。請各地因地制宜,細化操作規(guī)程,轉(zhuǎn)化為農(nóng)民易學易懂的圖文視頻,并加強技術(shù)指導和宣傳培訓,為提升黃淮海地區(qū)玉米(大豆)播種質(zhì)量提供有效技術(shù)支撐保障。
 
  農(nóng)業(yè)農(nóng)村部農(nóng)業(yè)機械化總站
 
  2023年5月18日
 
  黃淮海地區(qū)夏玉米(大豆)高性能免耕播種機應用指引
 
  農(nóng)業(yè)農(nóng)村部農(nóng)業(yè)機械化總站
 
  農(nóng)業(yè)農(nóng)村部農(nóng)作物生產(chǎn)全程機械化專家指導組
 
  當前,黃淮海夏種即將開始,玉米(大豆)苗齊、苗勻、苗壯是高產(chǎn)的重要基礎,播種質(zhì)量至關重要。在黃淮海地區(qū)推廣應用高性能免耕播種機,提升玉米(大豆)播種質(zhì)量和效率,對于提高糧食單產(chǎn)水平、保障國家糧食安全意義重大。針對黃淮海地區(qū)玉米(大豆)高性能免耕播種機大面積推廣應用,制定本指引,其他作物和地區(qū)參照應用。
 
  一、機具選擇與配套
 
  為搶農(nóng)時,黃淮海地區(qū)一般采用免耕播種,種床基礎較差,大量新鮮秸稈和根茬殘留,容易造成播種機具擁堵和種子土壤結(jié)合不緊密;經(jīng)過前茬小麥生產(chǎn)多次碾壓,表層土壤容重大、較堅實,增加了播種開溝作業(yè)難度;部分地塊土壤高低不平,提高了仿形難度,播種時容易造成深淺不一,整齊度差。選擇機具時,應充分考慮種床基礎,選擇適用的高性能免耕播種機,并配套北斗自動導航駕駛系統(tǒng)和播種作業(yè)監(jiān)測終端,提高播種質(zhì)量。
 
  (一)高性能免耕播種機
 
  應具有破茬開溝、播種、施肥、覆土、鎮(zhèn)壓等功能。在小麥秸稈全量覆蓋的情況下作業(yè)通過性強、作業(yè)速度高、無堵塞、播種質(zhì)量好、能同時深施化肥。一般應配置指夾式或氣力式排種器,提高播種粒距均勻性,減少重播、漏播,實現(xiàn)較高作業(yè)速度下均勻播種;應配置單體獨立同步仿形機構(gòu),在播種機開溝器位置同步仿形,實現(xiàn)播種深度均勻一致,提高出苗整齊度;應配置V型或單體輪式苗帶鎮(zhèn)壓機構(gòu),提高鎮(zhèn)壓效果,確保種子與土壤緊密結(jié)合。
 
  (二)北斗自動導航駕駛系統(tǒng)
 
  宜加裝北斗自動導航駕駛系統(tǒng),提高播種直線度和調(diào)頭對行銜接性,提高作業(yè)精準度和前后環(huán)節(jié)作業(yè)匹配度,實現(xiàn)精準播種,為后期植保、對行收獲創(chuàng)造條件,減輕機手勞動強度。應根據(jù)當?shù)囟ㄎ换?、網(wǎng)絡信號、地塊坡度、擴展性等因素,優(yōu)先選擇配置具有作業(yè)線共享功能、支持移動、聯(lián)通和電信“三網(wǎng)合一”的網(wǎng)絡差分方式的系統(tǒng)。
 
  (三)播種作業(yè)監(jiān)測終端
 
  宜加裝種子漏播等播種作業(yè)異常報警、質(zhì)量監(jiān)測設備,以便機手實時掌握排種器工作狀態(tài),避免缺種、漏播等。設備應具備種子漏播報警、實時作業(yè)速度顯示、作業(yè)面積、各行播量(株數(shù))和畝播量(株數(shù))統(tǒng)計功能,及數(shù)據(jù)采集上傳功能,能夠在后臺監(jiān)測播種情況及作業(yè)軌跡情況。高速精準作業(yè)(10km/h以上)還應配備具有種子計數(shù)與落種間隔統(tǒng)計分析及顯示功能的監(jiān)測設備。監(jiān)測設備的誤差率應小于1%,對播種過程中灰塵、砂石、種子包衣、石墨粉等適應性強。
 
  二、作業(yè)前檢修保養(yǎng)
 
  作業(yè)季節(jié)開始前,應按照產(chǎn)品使用說明書對播種機進行一次全面檢查與保養(yǎng),確保機具在整個播種期能正常工作,有效預防和減少作業(yè)故障,提高作業(yè)質(zhì)量和效率。經(jīng)保養(yǎng)或修理后的播種機應做好試運轉(zhuǎn),先局部后整體,認真檢查地輪、傳動部件、開溝器、排種器、施肥裝置、風機、覆土器、鎮(zhèn)壓器、仿形機構(gòu)等機構(gòu)的運轉(zhuǎn)、傳動、調(diào)節(jié)情況,檢查有無異常響聲情況,運動是否靈活可靠;檢查外露傳動部件防護罩是否完好,重要部位螺栓、螺母有無松動,機架等部件有無變形等;發(fā)現(xiàn)問題應及時解決。備足備齊田間作業(yè)常用工具、零配件、易損零配件及油料等,以便出現(xiàn)故障時能夠及時排除。
 
  三、選擇適宜品種和播期
 
  (一)選用良種
 
  根據(jù)當?shù)厣a(chǎn)條件、地力基礎和氣候條件,選用經(jīng)審定的優(yōu)質(zhì)高產(chǎn)、抗逆性強、適應性廣、宜機化優(yōu)良品種。玉米(大豆)高性能免耕播種機屬單粒(精密)播種機,使用不達標種子會造成空穴,降低產(chǎn)量。因此,應選用合格的商品種,種子純度、凈度、發(fā)芽率、含水率達到標準要求,并采用種子包衣或藥劑拌種進行病蟲害防治,形成“高品質(zhì)商品種+高性能播種機”聯(lián)合應用方式。
 
  (二)適墑播種
 
  黃淮海地區(qū)一般在小麥收獲后一周內(nèi)完成播種,夏玉米應免耕播種,夏大豆可因地制宜淺耕后播種。小麥收獲后,若墑情適宜,應立即搶墑播種;若墑情較差,應等墑播種或澆水造墑后播種;若適播期內(nèi)未達到播種條件,應及時改種早熟品種,并適當增加種植密度。
 
  (三)合理密植
 
  根據(jù)品種特性、土壤肥力、管理水平等,確定適宜種植密度,構(gòu)建合理群體結(jié)構(gòu)。針對肥水供應充足、生產(chǎn)條件整體較好,且使用耐密抗倒伏品種地塊,可適當增加密度,玉米畝播粒數(shù)增至5000粒,畝保苗增至4500—5000株,大豆畝播粒數(shù)增至13000—16000粒,畝保苗增至12000—15000株。根據(jù)畝播粒數(shù)和當?shù)剞r(nóng)藝要求確定合理的種植株距和行距,為下一步調(diào)整播種機的理論株距和行距奠定基礎。黃淮海地區(qū)玉米行距一般為60cm、株距一般為20—25cm,大豆行距一般為30—40cm,株距一般為12—14cm。
 
  四、調(diào)整試播
 
  (一)機具調(diào)整
 
  正式播種作業(yè)前,應按當?shù)剞r(nóng)藝要求,根據(jù)產(chǎn)品說明書調(diào)整播種機,確保各項作業(yè)指標滿足要求。
 
  1、選擇適用的排種盤。通過更換排種器上的不同排種盤,可實現(xiàn)玉米、大豆等不同作物的播種。其中,氣力式排種器適用于玉米和大豆播種,根據(jù)不同作物種子形狀、粒度大小選擇適宜孔徑大小的排種盤;更換排種盤時,應先打開排種器殼體,使用專用工具拆卸種盤并更換,完成后將排種器殼體復位,并調(diào)整清種限位板位置和清種力度。指夾式排種器主要用于玉米播種,用于播種大豆時,可將指夾排種器更換為毛刷排種器,安裝結(jié)構(gòu)和空位應一致,并根據(jù)種子形狀、粒度大小,校核指夾復位彈簧力度、調(diào)整清種毛刷位置。
 
  2、行距調(diào)整。各播種單元在播種機框架上應均勻排布。奇數(shù)播種行播種機,應先確定中間行播種單元的位置,再根據(jù)行距確定其他行播種單元的位置,并固定好,防止松動;偶數(shù)播種行播種機,應先確定中間兩行播種單元的位置。
 
  3、株距調(diào)整。按照播種機上的株距調(diào)節(jié)指示圖進行調(diào)整,氣力式播種機的株距調(diào)整一般在更換排種盤選擇孔徑大小的同時確定適宜的吸種孔數(shù)量,并調(diào)節(jié)播種機傳動裝置實現(xiàn);指夾式播種機應調(diào)節(jié)播種機傳動裝置。傳動裝置調(diào)整時,采用地輪傳動方式的播種機主要調(diào)整塔輪齒數(shù)比,通過改變傳動速比實現(xiàn)播種株距的調(diào)整;電驅(qū)播種機主要調(diào)節(jié)電驅(qū)控制器,在控制器中找出株距調(diào)整選項,輸入所需要的株距即可實現(xiàn)株距的調(diào)整。
 
  4、清茬防堵調(diào)整。通過調(diào)節(jié)三點懸掛及機具自帶限位,調(diào)整秸稈切割裝置、破茬清壟機構(gòu)的位置,查看能否較好的切斷并清理播種帶的秸稈和雜草,應達到播種行秸稈少、清壟一致性好、無雍土及堵塞現(xiàn)象。
 
  5、播深調(diào)整。作物播深根據(jù)土質(zhì)、墑情及作物種類合理選擇,一般玉米播深3—5cm,大豆播深3cm左右。播種機可通過播深輪上下位置或仿形限位輪手柄來調(diào)節(jié)。
 
  6、鎮(zhèn)壓力調(diào)整。覆土鎮(zhèn)壓力可通過鎮(zhèn)壓輪檔位調(diào)節(jié)實現(xiàn)。玉米鎮(zhèn)壓力稍大,一般在檔位II或III級鎮(zhèn)壓檔位;大豆鎮(zhèn)壓力稍小,一般在檔位I級鎮(zhèn)壓檔位。
 
  7、排肥量調(diào)整。一般玉米每畝用高氮緩控釋肥(含氮量高于28%)50—70kg,大豆每畝施用低氮緩控釋肥(含量不超過15%)15—20kg。應按照播種機上的排肥量調(diào)節(jié)指示圖,通過調(diào)整擋板開度或排肥輪轉(zhuǎn)速實現(xiàn)大豆、玉米不同的排肥量。調(diào)整后應進行排量測試,作業(yè)過程中應關注肥管彎曲程度與流暢性,避免堆積堵塞。
 
  8、氣力式播種機風機壓力調(diào)整。氣力式播種機應按照播種機說明書中行數(shù)等條件,對風機壓力進行調(diào)整。播種過程中風機壓力應穩(wěn)定,一般控制在60—80mbar;應具備風壓監(jiān)測裝置,實時監(jiān)測風壓情況。其中,拖拉機PTO驅(qū)動風機的播種機,通過調(diào)節(jié)拖拉機PTO輸出轉(zhuǎn)速實現(xiàn)合理風機壓力;液壓馬達驅(qū)動風機的播種機,通過調(diào)節(jié)液壓馬達轉(zhuǎn)速實現(xiàn)合理風機壓力。
 
  (二)試播作業(yè)
 
  正式播種前要選擇有代表性的地塊進行試播。試播作業(yè)行進長度以30米左右為宜,根據(jù)田塊的條件確定適宜的播種速度,檢查行距、粒距、播種深度、施肥量、施肥深度是否滿足當?shù)剞r(nóng)藝要求,有無秸稈擁堵、播種和下肥料管堵塞等異常情況,并以此為依據(jù)進一步調(diào)整。調(diào)整后再進行試播并測試,直至達到作業(yè)質(zhì)量標準和農(nóng)戶要求。作物品種、田塊條件有變化應重新試播和調(diào)試機具。試播過程中,應注意觀察、傾聽機器工作狀況,發(fā)現(xiàn)異常及時解決。
 
  五、規(guī)范駕駛作業(yè)
 
  (一)注意起步轉(zhuǎn)彎
 
  道路運輸、播種過程中地頭轉(zhuǎn)彎、倒車時,應將播種單體提升,避免機具損壞。牽引式播種機組長,轉(zhuǎn)彎半徑大,倒車操作較復雜,播種前應對機具充分熟悉;作業(yè)開始時,應通過機具液壓控制系統(tǒng)緩慢降落播種單體。懸掛式播種機組長度小,轉(zhuǎn)彎換向靈活,作業(yè)開始時,應通過拖拉機升降裝置適時緩慢降下機具。轉(zhuǎn)彎時,應停止播種,將播種單體升起。
 
  (二)保持直線作業(yè)
 
  作業(yè)時,應盡量保持直線行駛;作業(yè)過程中嚴禁倒車,播完及時升起機具。轉(zhuǎn)彎調(diào)頭后,對于已安裝北斗自動導航駕駛系統(tǒng)的播種機組,應及時開啟系統(tǒng),增加直線度與銜接行一致性;對于未安裝的播種機組,應及時放下劃行器,確保行距一致性。
 
  (三)合理控制速度
 
  指夾式、氣力式排種器有外力主動夾持,受振動顛簸干擾小,排種穩(wěn)定性較高,能夠?qū)崿F(xiàn)高速播種作業(yè),一般指夾式播種機作業(yè)速度控制在6—8 km/h,氣力式播種機為8—10 km/h。
 
  (四)保持氣壓穩(wěn)定
 
  氣力式播種機一般采用手油門控制,保持PTO輸出轉(zhuǎn)速穩(wěn)定。開始作業(yè)時,先增加油門,提高轉(zhuǎn)速,一般PTO輸出轉(zhuǎn)速維持在540r/min左右,風機壓力60—80mbar,再緩慢降下機具開始作業(yè);轉(zhuǎn)彎掉頭時,應先提升機具,再降低轉(zhuǎn)速。
 
  (五)關注作業(yè)狀態(tài)
 
  播種作業(yè)過程中,應時刻關注作業(yè)和監(jiān)控狀態(tài),對聲光報警進行正確判斷分析;應關注播種機各行單體、施肥開溝器夾草及擁堵情況,發(fā)現(xiàn)異常及時停止并排除風險后再正常作業(yè)。
 
  (六)及時維護保養(yǎng)
 
  播種作業(yè)結(jié)束后,應將種箱、肥箱要及時清理干凈。應經(jīng)常檢查秸稈處理裝置、排種(肥)開溝器等易損部件磨損程度,磨損較大時,應及時更換,避免作業(yè)質(zhì)量降低。
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