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小麥高性能復式播種機促進單產(chǎn)提升情況調(diào)研
2023-08-31
15:28:19
來源:農(nóng)業(yè)機械化管理司 閱讀量:15737
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農(nóng)業(yè)機械化情況2023年第32期
編者按:今年我部明確提出提高糧油作物單產(chǎn)的工作要求,全國農(nóng)業(yè)機械化工作會議對大力支撐糧油作物單產(chǎn)提升工作作出了安排部署。山東省農(nóng)業(yè)農(nóng)村廳黨組成員、副廳長馬常春同志牽頭,組織開展了小麥高性能復式
播種機促進單產(chǎn)提升情況調(diào)研,形成了調(diào)研報告。現(xiàn)予刊登,供各地交流參考。
各地都要圍繞大面積提升單產(chǎn)這一重要任務,因地制宜,綜合施策,加快高性能播種機等助力單產(chǎn)提升的機具部署,同時加強機械化作業(yè)技術指導,把機械化增產(chǎn)潛力轉化為實打實的糧食產(chǎn)量增加。
小麥高性能復式播種機促進單產(chǎn)提升情況調(diào)研
山東省農(nóng)業(yè)農(nóng)村廳黨組成員、副廳長 馬常春
小麥作為山東省第一大糧食作物,2022年播種面積6005.3萬畝,占全國小麥播種總面積(35277.75萬畝)的17.0%,總產(chǎn)528.2億斤,占全國總產(chǎn)量(2754.46億斤)的19.2%,在保障國家糧食和重要農(nóng)產(chǎn)品穩(wěn)定安全供給中具有重要地位。為深入貫徹黨中央、國務院關于實施新一輪千億斤糧食產(chǎn)能提升行動的決策部署,全面落實農(nóng)業(yè)農(nóng)村部關于全國糧油等主要作物大面積單產(chǎn)提升行動的要求,山東省圍繞提升小麥機械化播種質量,挖掘農(nóng)業(yè)機械化增產(chǎn)潛力,助力大面積提高單產(chǎn),進行了專門調(diào)查研究。
(一)機播率高水平穩(wěn)定。隨著農(nóng)業(yè)生產(chǎn)機械化和農(nóng)機裝備產(chǎn)業(yè)的轉型升級,受益于農(nóng)機購置與應用補貼政策等強農(nóng)惠農(nóng)政策的穩(wěn)定實施,山東省小麥生產(chǎn)基本實現(xiàn)了從種到收全程機械化,機播率多年一直穩(wěn)定在99%以上。在小麥播種機械生產(chǎn)制造方面,全省擁有雷沃重工、山東奧龍、山東大華等一批在全國乃至國際具有一定影響力的企業(yè),播種機械研發(fā)創(chuàng)新能力位居前列,為山東省小麥播種機械化發(fā)展提供了堅實有力的裝備支撐。
(二)播種模式多種多樣。受地理位置、小麥品種、氣候條件、種植習慣等因素影響,山東省小麥播種形成了不同模式,較為典型的有以下三類:一是犁后旋耕再播種,耕深25cm左右,有利于增加耕層厚度,疏松土壤,減少土壤板結,改善土壤通透性,提高土壤的保水保肥能力和播種質量;二是旋耕后播種,一般旋耕兩遍,耕深15cm左右,旋耕速度快,有利于抓住墑情,細碎表層土壤,降低生產(chǎn)成本,抓住最佳播種期;三是深松免耕播種,深松后馬上進行免耕播種作業(yè),有利于避免土壤水分快速散失,實現(xiàn)保水保墑保苗。總體上,小麥播種行距15—18cm、播種深度3—5cm,雖然相差不大,但播種方式均屬于土壤整后播種,機械多次進地碾壓、表土整理后,導致墑情不一致、出苗不齊,甚至缺苗斷壟。
(三)播種機械千差萬別。目前,納入山東省農(nóng)機購置與應用補貼范圍的小麥播種機有299個型號。就行數(shù)而言,從6行到36行不等,就播種機構來看,
開溝器型式有圓盤式、箭鏟式、犁鏟式等,排種器型式有螺線細槽外槽輪式、螺旋窩眼外槽輪式等,鎮(zhèn)壓機構有對行鎮(zhèn)壓和播幅全面鎮(zhèn)壓,個別機型有簡易仿形和限深機構。總體上看,小麥播種機多數(shù)缺少仿形機構,播深一致性較差,出苗整齊度不好,不能完成一次性作業(yè),播前缺少整平鎮(zhèn)壓,播后鎮(zhèn)壓不到位,土層墑情不一。從近三年來山東省補貼情況看,補貼各類小麥播種機1.13萬臺,其中12—18行的小麥條播機成為主流,占到了66%,其次是7—11行,占18%。
二、小麥高性能復式播種與傳統(tǒng)條播對比試驗情況
高性能復式播種,是在播量均勻、穩(wěn)定的前提下,實現(xiàn)高于8km/h的高性能作業(yè),并一次性完成犁耕后碎土、松土、平整,播前鎮(zhèn)壓、均量條播、播后鎮(zhèn)壓等生產(chǎn)環(huán)節(jié),通過北斗精準作業(yè)監(jiān)控終端,實現(xiàn)漏播、堵塞報警,播量、播速、面積實時監(jiān)測,可有效提高播種質量,促進單產(chǎn)提升。2022年10月至2023年6月,我們在齊河縣、安丘市等地選擇三款機型開展了小麥高性能復式條播機與傳統(tǒng)條播機對比試驗。
(一)機具選型。選用2款小麥高性能復式條播機和1款傳統(tǒng)小麥條播機進行對比試驗。小麥高性能復式條播機選用濰柴雷沃、雷肯(進口)兩種機型,結構基本相同,可實現(xiàn)整地播種一體、播前播后兩次鎮(zhèn)壓,具備播種單體獨立開溝仿形,工作幅寬3m。傳統(tǒng)小麥條播機選用目前市場上使用較多的一款機型,播后鎮(zhèn)壓,不具備播前鎮(zhèn)壓和單體開溝仿形結構,工作幅寬1.3m。
(二)試驗條件。選擇山東省西部、中部小麥主產(chǎn)區(qū),具備土地連片種植、集中統(tǒng)一管理的地塊,使用同一小麥種子、同一配套動力、同一駕駛員,采用32斤/畝相同播種量進行對比。
(三)作業(yè)情況對比。在作業(yè)效率上,采用濰柴雷沃與雷肯小麥高性能復式條播機,可以實現(xiàn)8km/h的標準速度作業(yè),作業(yè)效率達到36畝/h,而傳統(tǒng)機具最高作業(yè)速度6km/h,作業(yè)效率11.5畝/h。在加種時間上,小麥高性能復式條播機的加種間隔為53min,傳統(tǒng)播種機的加種間隔時間為16min。通過對比發(fā)現(xiàn),小麥高性能復式條播機單次作業(yè)時間更長,速度更快,效率更高。在性能方面,國產(chǎn)和進口高性能復式條播機基本相同。
(四)小麥長勢對比。播種完成后,通過對小麥出苗、分蘗、拔節(jié)、灌漿、收獲等部分重要時期的長勢進行對比,結果如下。
1.出苗期。采用高性能復式條播機播種的小麥,出苗整齊均勻,苗齊苗旺;而傳統(tǒng)播種機的出苗則出現(xiàn)了出苗高低不一和缺苗斷壟問題。
2.分蘗期。出苗差異顯著。采用高性能復式條播機播種的小麥,除苗情長勢更加均勻以外,分蘗數(shù)量顯著增加;而傳統(tǒng)條播機播種的小麥,因出苗時間不一,出苗較晚的小麥尚未分蘗生長。
3.拔節(jié)期。采用高性能復式條播機播種的小麥株長已到達31—32cm,長勢較為一致,且生長進度統(tǒng)一;而傳統(tǒng)條播機播種的小麥,株長僅為23—25cm,生長較為緩慢,生長進度不一。
4.灌漿期。采用高性能復式條播機播種的小麥株長已到達80cm,而普通條播機播種的小麥,株長僅為65cm左右。
5.收獲期。采用高性能復式條播機相比于普通條播機播種的小麥,更齊整,長勢均勻。
通過以上生長過程的跟蹤對比,發(fā)現(xiàn)高性能復式條播機播種的小麥,出苗更齊整,苗株更粗壯,長勢更旺盛,在不同生產(chǎn)周期中,均有比普通條播機的過程優(yōu)勢,在促進作物生長、保持苗強苗旺、生長期一致方面效果明顯。
(五)投入產(chǎn)出對比。從小麥單產(chǎn)上看,采用高性能復式條播機播種的小麥,畝產(chǎn)量分別達到636kg、756kg,較傳統(tǒng)條播機分別提高9.65%、12.6%;從進地次數(shù)上看,采用傳統(tǒng)播種農(nóng)藝的,需要“深翻(犁耕)+旋耕或耙地(2輪)+播種鎮(zhèn)壓”4輪作業(yè),經(jīng)濟性差,多次進地造成土壤深層壓實,在一定程度上影響糧食增產(chǎn)增收。采用高性能復式條播,通過“深翻(犁耕)+耙壓復式條播”2輪作業(yè)完成播種,明顯節(jié)約了成本;從節(jié)本增效上看,使用常規(guī)條播作業(yè),若要達到與高性能復式條播作業(yè)相似的產(chǎn)量,則需要加大種子用量5—8kg/畝,而高性能復式條播機具有10%—15%種子用量的節(jié)本效果,且作業(yè)效率提高30%以上,節(jié)本增收達到100—200元/畝,效果顯著。
三、發(fā)展小麥高性能復式播種機的必要性和存在的主要問題
“七分種,三分管”,播種基礎最關鍵。小麥播種機的作業(yè)性能直接影響小麥的播種質量。從調(diào)研情況看,發(fā)展小麥高性能復式播種機十分必要。
(一)農(nóng)業(yè)經(jīng)營方式的需求。隨著土地集約化、規(guī)模化進程的加快發(fā)展和農(nóng)村勞動力的轉移,農(nóng)業(yè)生產(chǎn)經(jīng)營方式逐步由一家一戶的家庭式生產(chǎn)向以合作社、家庭農(nóng)場、種植大戶等為主的規(guī)模化經(jīng)營轉變,對農(nóng)業(yè)機械的要求也越來越高,傳統(tǒng)小型、單一作業(yè)的播種機已經(jīng)不能滿足現(xiàn)代農(nóng)業(yè)生產(chǎn)方式的高質量要求。高性能、復式條播機作業(yè)效率提高30%以上,節(jié)本增收達到100—200元/畝,效果顯著,逐步成為廣大農(nóng)業(yè)生產(chǎn)經(jīng)營組織的首選。
(二)促進糧食單產(chǎn)提升的需求。2023年中央一號文件明確提出了“主攻單產(chǎn)、力爭多增產(chǎn)”的要求,農(nóng)機裝備是現(xiàn)代農(nóng)業(yè)技術集成和各項生產(chǎn)資料得以有效利用的重要載體,除了在種子等方面發(fā)力外,提高小麥播種質量,是促進小麥單產(chǎn)提升最直接、有效的方法。小麥高性能復式播種機較傳統(tǒng)作業(yè)可提高糧食產(chǎn)量10%—13%,每畝按照1000斤計算,就可提高糧食產(chǎn)量100斤,社會效益巨大。
(三)減少小麥播種損失的需求。目前,“有錢買種,沒錢買苗”的思想已經(jīng)根植于廣大農(nóng)戶思想中,廣大農(nóng)戶為了提高出苗數(shù)量,不斷加大播種量,造成了大量糧食浪費。發(fā)展高性能小麥播種機,可實現(xiàn)精量播種、損失預警,有效減少播種量。山東省小麥種植面積6000多萬畝,如果畝均節(jié)約10斤種子,就可節(jié)約6億斤糧食。
(四)改進小麥播種模式的需求。玉米秸稈還田后,通過深耕深翻,秸稈被覆蓋在地下,如果鎮(zhèn)壓不到位,極容易形成“面包層”。小麥播種時,容易造成播種不實,或者直接播種在秸稈上,降低出苗率,形成缺苗斷壟。另外,覆蓋在地下的秸稈還起到了保溫的效果,給蟲卵、病菌提供了越冬和繁殖的場所,等到第二年春季溫度回升后,病蟲害危害增加。需要改變傳統(tǒng)的播種模式,大力推行播前、播后雙鎮(zhèn)壓,減少“面包層”。
當前,制約小麥高性能復式播種機推廣應用的主要問題,一是高性能播種機購置使用成本較高。一臺20行的普通小麥條播機約1萬元,而高性能播種機價格普遍較高,個別型號售價超過10萬元,而小麥種植收益相對較低,農(nóng)民購置、使用積極性不夠。二是常規(guī)播種機保有量過大。山東省小麥播種機90%以上都為傳統(tǒng)播種機,多數(shù)還在使用期限內(nèi),短期內(nèi)更新?lián)Q代難度較大。三是高性能播種機具試驗鑒定能力有待提升。目前,播種機鑒定大綱已將高性能小麥播種機納入了鑒定范圍,但各省鑒定能力發(fā)展還不均衡,較好滿足產(chǎn)品鑒定需求,需要進一步提升。四是高性能播種機研發(fā)制造水平有待提升。山東省雖然小麥播種機械產(chǎn)業(yè)基礎較好,但大眾產(chǎn)品趨同化明顯,原創(chuàng)性科技成果少,與歐美等發(fā)達國家相比,差距還比較大,一些關鍵零部件仍需要進口,開溝器硬度等一些“卡脖子”問題亟待突破。
四、幾點建議
(一)強化政策扶持。推動在農(nóng)機購置與應用補貼政策框架內(nèi),按照現(xiàn)行最高35%的補貼標準,對小麥高性能復式播種機實行“優(yōu)機優(yōu)補”,減輕購置壓力,大力引導新型經(jīng)營主體購置小麥高性能復式播種機。爭取財政部門支持,開展小麥高性能復式播種作業(yè)補貼,推廣普及小麥高性能復式播種模式。同時,推動將播種機械納入農(nóng)機報廢更新補貼范圍,對達到使用年限或機具性能差的老舊播種機械淘汰更新給予補貼,引導小麥播種機械加快更新和轉型升級。
(二)加強試驗鑒定。加強鑒定能力建設,對小麥高性能復式播種機等生產(chǎn)亟需產(chǎn)品,依法依規(guī)開辟綠色通道,優(yōu)先安排試驗鑒定。強化部省之間、省際之間農(nóng)機鑒定機構協(xié)調(diào)配合,積極開展合作互助,加快拓展提升農(nóng)機鑒定服務能力。加強農(nóng)機鑒定機構與社會檢驗檢測機構之間的協(xié)同配合,多方面擴展鑒定資源,提升供給服務水平。
(三)加強技術科技攻關。聚焦小麥高性能復式播種機相對薄弱的領域,增強國產(chǎn)自主創(chuàng)新能力,加強基礎前沿、關鍵共性技術研究,協(xié)同攻克基礎材料、工藝等“卡脖子”問題。以市場為導向,以企業(yè)為主體,以科研單位為依托,構建分工協(xié)作科技創(chuàng)新組織模式,促進成果轉化,加快補上小麥高性能復式播種機發(fā)展短板。
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