寧夏農(nóng)機(jī)推廣站制定2025年春小麥機(jī)械化播種技術(shù)指引

2025-02-27 09:54:56 來源:寧夏農(nóng)業(yè)機(jī)械化技術(shù)推廣站 閱讀量:14022 評(píng)論

  當(dāng)前,正處于春耕春播的關(guān)鍵時(shí)期。為進(jìn)一步提高春耕春播生產(chǎn)機(jī)械化水平和機(jī)械化技術(shù)到位率,保證機(jī)械化播種質(zhì)量,助力糧油生產(chǎn)大面積單產(chǎn)提升,寧夏農(nóng)業(yè)機(jī)械化技術(shù)推廣站提出了全區(qū)春小麥機(jī)械化播種技術(shù)指引,加強(qiáng)技術(shù)指導(dǎo)與服務(wù)。
 
  一、耕整地
 
  在上茬作物收獲后,有條件的地區(qū)撒施基肥,實(shí)行冬翻田作業(yè),翻耕深度20 cm~30 cm。播前土壤整地宜早不宜遲,推薦采用高性能聯(lián)合整地機(jī),一次性完成滅茬、旋耕、鎮(zhèn)壓等多項(xiàng)作業(yè)。也可采用旋耕、耙耱、鎮(zhèn)壓分環(huán)節(jié)作業(yè),整地深度≥5 cm。作業(yè)后,地塊應(yīng)平整,深度一致,地表高低落差≤3 cm,無雜草根茬,墑情良好。
 
  二、播種
 
  (一)品種與肥料選擇。根據(jù)農(nóng)藝推薦,選用經(jīng)國(guó)家和自治區(qū)審定的優(yōu)質(zhì)高產(chǎn)、抗逆性強(qiáng)、適應(yīng)性廣、宜機(jī)收的優(yōu)良品種。結(jié)合當(dāng)?shù)夭∠x害發(fā)生情況,根據(jù)農(nóng)藝要求,進(jìn)行拌種或包衣處理。肥料應(yīng)為合格產(chǎn)品,流動(dòng)性好,適用于機(jī)械作業(yè)。
 
  (二)機(jī)具選擇。目前適應(yīng)小麥播種的機(jī)型較多,多用12行~14行條播機(jī),推薦采用復(fù)式多功能、排種排肥智能化監(jiān)測(cè)等高性能播種機(jī),配備北斗輔助導(dǎo)航駕駛系統(tǒng),以提升播種質(zhì)量。
 
  (三)機(jī)具檢查。播種開始前應(yīng)對(duì)照產(chǎn)品使用說明書全面檢查與保養(yǎng)播種機(jī),檢查緊固部位是否緊固牢靠,各傳動(dòng)部位是否轉(zhuǎn)動(dòng)靈活。安全防護(hù)裝置是否齊全,安裝是否牢固可靠。查看并清除種肥箱內(nèi)的雜物和殘留的種子、肥料,清除開溝器和傳動(dòng)機(jī)構(gòu)上的雜草和雜物,調(diào)整鏈傳動(dòng)裝置,確保機(jī)具保持良好的工作狀況。
 
  (四)機(jī)具掛接。小麥播種機(jī)一般通過三點(diǎn)懸掛與拖拉機(jī)掛接。掛接后,調(diào)整拖拉機(jī)中央拉桿和左右提升桿位置,使播種機(jī)機(jī)架在縱向與橫向都處于水平狀態(tài),然后調(diào)整拖拉機(jī)左右限位螺桿(或限位鏈),使播種機(jī)橫向中心線與拖拉機(jī)縱向中心線相重合。在播種作業(yè)時(shí),調(diào)整拉桿,使播種機(jī)工作時(shí)達(dá)到整體仿形的效果。拖拉機(jī)懸掛播種機(jī)后有翹頭現(xiàn)象時(shí),需在拖拉機(jī)前加配重塊,以增加拖拉機(jī)的縱向穩(wěn)定性。
 
  (五)機(jī)具技術(shù)參數(shù)調(diào)整。正式播種作業(yè)前應(yīng)根據(jù)播種機(jī)的使用說明書和當(dāng)?shù)胤N植農(nóng)藝要求,調(diào)整播種機(jī)的行距、播種量、施肥量、播種深度和施肥深度、作業(yè)速度等技術(shù)參數(shù),并進(jìn)行試播。播種深度3 cm~5 cm,行距12.5 cm~15 cm,種肥距離5 cm~10 cm,畝播量20 kg~22.5 kg。對(duì)土壤墑情差或無灌溉條件的地塊,適當(dāng)深播或深覆土,加重鎮(zhèn)壓。
 
  (六)作業(yè)質(zhì)量要求。種子在播行內(nèi)均勻分布,無斷條、漏播現(xiàn)象,各項(xiàng)作業(yè)指標(biāo)符合相關(guān)作業(yè)質(zhì)量要求。其中播種均勻性變異系數(shù)應(yīng)≤35%,種子破損率應(yīng)≤1.5%(金屬材料排種器)或≤0.5%(非金屬材料排種器),播種深度合格率應(yīng)≥85%,種肥間距合格率應(yīng)≥90%。
 
  (七)播期。根據(jù)氣溫、土壤墑情等因素確定小麥適播期,適時(shí)頂凌播種。其中,引黃灌區(qū)適播期在2月下旬~3月中上旬,中部干旱帶適播期在2月下旬~3月中下旬,寧南山區(qū)適播期在3月中旬~3月底。
 
  三、注意事項(xiàng)
 
  拖拉機(jī)駕駛?cè)藛T應(yīng)經(jīng)過技術(shù)培訓(xùn),掌握機(jī)械化作業(yè)操作要領(lǐng)及當(dāng)?shù)胤N植農(nóng)藝要求等方面的知識(shí),掌握播種機(jī)械的正確使用、維護(hù)保養(yǎng)和作業(yè)質(zhì)量指標(biāo)知識(shí)。作業(yè)中,要嚴(yán)格按照農(nóng)機(jī)安全操作規(guī)程及播種作業(yè)安全注意事項(xiàng)進(jìn)行操作,確保安全生產(chǎn)。播種機(jī)上嚴(yán)禁站人,不允許急轉(zhuǎn)彎和倒車,應(yīng)盡量避免停車,必須停車時(shí)為防止出現(xiàn)缺苗“斷條”現(xiàn)象,應(yīng)將播種機(jī)升起,后退一定距離,再繼續(xù)播種。開溝器入土后播種機(jī)不得后退,以免堵塞或損壞開溝器。地頭轉(zhuǎn)彎時(shí)應(yīng)將播種機(jī)懸起或把開溝器及土壤工作部件升起,切斷排種器和排肥器的動(dòng)力,升起劃行器,然后才能轉(zhuǎn)彎。
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