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應對惡劣天氣：履帶式拖拉機優(yōu)勢凸顯

2023-08-14 15:07:16 來源：農(nóng)機網(wǎng)整理發(fā)布 閱讀量：48781 評論

導讀：還記得前期河南省“爛場雨”搶收小麥的報道嗎？相比輪式拖拉機，履帶式收割機也是將優(yōu)勢發(fā)揮到極致。那么，以上屢屢提到的履帶拖拉機，在農(nóng)業(yè)生產(chǎn)中有哪些優(yōu)點？

　　【農(nóng)機網(wǎng) 編輯視角】近期，“杜蘇苪”、“卡努”、“蘭恩”等多個臺風接連輪翻上陣，牽動著每一位地球人的心。當前正是秋糧作物產(chǎn)量形成的關(guān)鍵時期，前期東北地區(qū)強降雨導致農(nóng)田水分飽和，玉米等作物根系松動，如果暴雨疊加大風，作物倒伏風險極高。
 
　　8月9日，農(nóng)業(yè)農(nóng)村部召開專題會議，進一步研究推進農(nóng)業(yè)抗災救災和秋糧生產(chǎn)工作。會議指出，近期華北、黃淮和東北地區(qū)極端強降雨引發(fā)洪澇災害，給農(nóng)業(yè)生產(chǎn)造成較大影響，特別是蓄滯洪區(qū)和行洪區(qū)等區(qū)域受災較重，近日東北部分地區(qū)還可能遭遇臺風等極端天氣，防災減災形勢嚴峻。

　　會議要求，各級農(nóng)業(yè)農(nóng)村部門必須高度重視、提早應對、嚴陣以待，毫不松懈抓好當前防臺防汛救災工作。加強與氣象、應急、水利等部門溝通會商，密切關(guān)注“卡努”移動路徑，提早落實防御措施。組織應急服務隊，調(diào)集排水機械，加快排除田間積水。會議強調(diào)，蓄滯洪區(qū)農(nóng)業(yè)生產(chǎn)受災程度重，當務之急是協(xié)調(diào)加快排澇，調(diào)劑調(diào)度排澇機具，幫助受淹地塊盡快排水，排水時間較長的地區(qū)要提前制定小麥晚播預案，多備履帶式拖拉機等，確保不影響冬小麥播種。
　　
　　黑龍江省建立789支農(nóng)機應急作業(yè)服務隊，實行區(qū)域應急協(xié)調(diào)聯(lián)動。針對局部洪災，按照防汛指揮部的統(tǒng)一部署，迅速派出農(nóng)機應急作業(yè)服務隊、農(nóng)機合作社等力量參與防汛救災工作中，發(fā)揮大型農(nóng)業(yè)機械在物資、人員轉(zhuǎn)運及防洪加固工程中的關(guān)鍵作用。
 
　　8月2日，黑龍江省五常市沖河鎮(zhèn)的豐源村、城北村、城南村受暴雨影響較重，積水涌進房屋，老人孩子上房頂、到高山避險，農(nóng)田被淹…… 受困群眾亟待轉(zhuǎn)移到安全地帶。但是，由于水位高，一般車輛無法進出。當?shù)胤姥粗笓]部立即與農(nóng)業(yè)農(nóng)村部門聯(lián)系，協(xié)調(diào)大型大馬力農(nóng)機開展人員和物資轉(zhuǎn)移。大型農(nóng)機底盤高、車胎高、馬力大、車身重，在涉水、泥濘道路上通過性強。
 
　　五常市組建82支農(nóng)機應急作業(yè)服務隊，吸收703名素質(zhì)好、技能精、講奉獻的機手作為服務隊骨干成員，準備收獲機械、履帶式拖拉機等應急作業(yè)農(nóng)機裝備860臺套及農(nóng)用水泵2236臺，建立應急作業(yè)響應調(diào)用機制，預判可能發(fā)生的災害情況，制定農(nóng)機防災減災工作預案和措施，結(jié)合高素質(zhì)農(nóng)民培訓等方式開展應急作業(yè)技能和農(nóng)機安全操作培訓，定期、不定期組織開展積水搶排、倒伏作物、過濕地塊搶收等農(nóng)機應急作業(yè)演練。
 
　　還記得前期河南省“爛場雨”搶收小麥的報道嗎？相比輪式拖拉機，履帶式收割機也是將優(yōu)勢發(fā)揮到極致。那么，以上屢屢提到的履帶拖拉機，在農(nóng)業(yè)生產(chǎn)中有哪些優(yōu)點？
 
　　履帶拖拉機因其不可替代的結(jié)構(gòu)特點和性能注定定了它在農(nóng)業(yè)生產(chǎn)中具有獨特的優(yōu)勢。
 
　　牽引效率高：履帶拖拉機因其接地面積更大，附著力高、在相同馬力時，牽引力大。相同機重下，履帶拖拉機的牽引力是輪式拖拉機的1.4～1.8倍，牽引效率方面，理論上輪式拖拉機最大牽引效率是55%～65%，履帶拖拉機可達70%～80%，也就是說同馬力的拖拉機，輪拖發(fā)動機有效功率要比履拖多喪失15%。試驗表明在硬地面和已耕地上，履帶式與四輪驅(qū)動輪式拖拉機牽引性能在相近條件下試驗比較，履帶拖拉機牽引效率高出10%～20%左右。
 
　　對土壤結(jié)構(gòu)破壞?。?/strong>履帶拖拉機接地面積大、對土壤壓實及傷害小、不易打滑、更容易發(fā)揮牽引性能好的特點。輪式拖拉機輪胎附著性差，滑轉(zhuǎn)率高。輪式拖拉機作業(yè)時，后輪始終行走在犁溝中，輪胎對土壤的剪切作用，使耕層土壤結(jié)構(gòu)遭到破壞。經(jīng)數(shù)年耕作后，在土壤的耕層下面將生成硬底層，不利于土壤的蓄水保墑和作物的生長。即使經(jīng)過深度翻耙，依然會保持碎小的板結(jié)硬塊，土壤的顯微結(jié)構(gòu)遭到了破壞。履帶拖拉機對土壤的壓實程度比輪式拖拉機小，深耕細作效果尤為突出，使得履帶拖拉機在低、濕地作業(yè)具有明顯優(yōu)勢。輪式拖拉機播種作業(yè)時后輪碾壓的深溝造成了種子播種深度和覆土的不一致，給播種質(zhì)量帶來極為不利的影響，而且給后續(xù)的澆水作業(yè)也帶來困難。
 
　　適應性高：履帶拖拉機還特別適應惡劣土壤條件下耕作。由于丘陵地區(qū)耕地坡度較大，土壤阻力不均，造成輪式拖拉機在坡地作業(yè)時穩(wěn)定性差、不安全、作業(yè)深度不均、作業(yè)質(zhì)量不髙。履帶拖拉機由于重心低、具有良好的抵抗翻傾和下滑的坡地穩(wěn)定性，同時還具有轉(zhuǎn)彎半徑小的機動性、爬坡能力強的越野性等特點，對于山區(qū)和丘陵地帶的農(nóng)田、重黏土地和開荒作業(yè)等重負荷種植作業(yè)、梯田作業(yè)，比輪拖有更好的適應性。丘陵區(qū)坡地、重黏土地和開荒作業(yè)等重負荷種植作業(yè)地區(qū)，農(nóng)戶選擇履帶式拖拉機進行犁地、耕地、耙地作業(yè)明顯提高作業(yè)質(zhì)量。
 
　　維護方便：履帶拖拉機的全車架結(jié)構(gòu)，相比輪拖的無架結(jié)構(gòu)，維修時不必像輪拖一樣進行斷腰拆解，大大方便了用戶日常對整機的維修和保養(yǎng)?，F(xiàn)在的履帶都為橡膠的了，維護保養(yǎng)基本和輪式拖拉機差異不大，同時引導輪、支重輪、托帶輪的壽命也可大大延長，有效降低了后期的維修保養(yǎng)費用和轉(zhuǎn)移運輸費用。
 
　　操作舒適：履帶拖拉機普遍已經(jīng)采用了橡膠履帶后，對路面沒有損傷，道路轉(zhuǎn)移適應性問題得到解決，履帶拖拉機減振和降噪效果明顯，抗顛簸性能更好，大大提高了舒適性。目前履帶拖拉機普遍已經(jīng)采用了液壓助力轉(zhuǎn)向、全封閉減震駕駛室、可選裝空調(diào)和暖風，數(shù)字化儀表等，耳旁噪聲、駕乘舒適性等方面已經(jīng)得到了較大提高。隨著差速轉(zhuǎn)向、單手柄或方向盤轉(zhuǎn)向控制等新技術(shù)的應用，其操控舒適性將越來越好，已經(jīng)不輸于輪式拖拉機。
 
　　由于上述優(yōu)勢，相信新的履帶拖拉機會越來越多。隨著履帶拖拉機速度和舒適性方面的不斷提高，其應用的前景將更為廣闊，在農(nóng)業(yè)生產(chǎn)中必將重新煥發(fā)出勃勃生機。
 
　　注：本文由農(nóng)機網(wǎng)(epigene.com.cn)整理發(fā)布，資料來源：央視網(wǎng)、農(nóng)業(yè)農(nóng)村部網(wǎng)站、光明網(wǎng)。

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