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2020年黃淮海夏玉米生產(chǎn)技術(shù)意見(jiàn)

2020-06-08 10:25:22 來(lái)源:全國(guó)農(nóng)業(yè)技術(shù)推廣服務(wù)中心 閱讀量:19025 評(píng)論

導(dǎo)讀:黃淮海地區(qū)是我國(guó)夏播玉米優(yōu)勢(shì)產(chǎn)區(qū)之一,常年夏玉米種植面積2億畝左右。當(dāng)前,黃淮海地區(qū)冬小麥正由南向北陸續(xù)成熟收獲,夏玉米即將搶時(shí)播種。針對(duì)今年黃淮海地區(qū)的自然資源條件和資源稟賦,農(nóng)業(yè)農(nóng)村部玉米專家指導(dǎo)組會(huì)同全國(guó)農(nóng)業(yè)技術(shù)推廣服務(wù)中心,制定了2020年黃淮海夏玉米生產(chǎn)技術(shù)意見(jiàn)。

  【農(nóng)機(jī)網(wǎng) 熱點(diǎn)關(guān)注】 黃淮海地區(qū)是我國(guó)夏播玉米優(yōu)勢(shì)產(chǎn)區(qū)之一,常年夏玉米種植面積2億畝左右。當(dāng)前,黃淮海地區(qū)冬小麥正由南向北陸續(xù)成熟收獲,夏玉米即將搶時(shí)播種。針對(duì)今年黃淮海地區(qū)的自然資源條件和資源稟賦,農(nóng)業(yè)農(nóng)村部玉米專家指導(dǎo)組會(huì)同全國(guó)農(nóng)業(yè)技術(shù)推廣服務(wù)中心,制定了2020年黃淮海夏玉米生產(chǎn)技術(shù)意見(jiàn)。
 
  一是調(diào)整布局,優(yōu)化結(jié)構(gòu)。根據(jù)市場(chǎng)需求并結(jié)合各地生產(chǎn)實(shí)際,調(diào)整和優(yōu)化玉米種植結(jié)構(gòu),因地制宜發(fā)展青貯玉米、鮮食玉米,開(kāi)展玉米與其他作物(大豆、花生等)間套作等。
 
  二是優(yōu)選良種,精選種子??茖W(xué)選用適宜當(dāng)?shù)胤N植、熟期適宜、耐密抗倒、抗逆廣適、高產(chǎn)穩(wěn)產(chǎn)的玉米良種。黃淮海北部地區(qū)要選擇熟期早、耐旱性強(qiáng)的品種;黃淮海南部地區(qū)選用中熟期、抗銹病、耐高溫強(qiáng)的品種。籽粒直收的地塊,選用早熟、抗倒、脫水快、適宜機(jī)械籽粒直收的品種。選購(gòu)高質(zhì)量包衣種子,確保滿足機(jī)械單粒精量播種要求。
 
  三是搶時(shí)早播,一播全苗。前茬作物收獲后及時(shí)搶播夏玉米,中南部爭(zhēng)取在6月15日前、北部在6月20日前完成播種,采用機(jī)械精量播種機(jī)60厘米等行距貼茬直播。墑情不足播種時(shí),要及時(shí)澆“蒙頭水”,確保一播全苗。
 
  四是合理密植,優(yōu)化群體。根據(jù)品種特性及生產(chǎn)條件等確定適宜種植密度。一般地塊畝保苗4000—4500株,耐密品種和高產(chǎn)田適當(dāng)提高密度。對(duì)種植密度偏大、生長(zhǎng)過(guò)旺地塊,以及風(fēng)災(zāi)倒伏頻發(fā)地區(qū),可在拔節(jié)期至小喇叭口期酌情噴施植物生長(zhǎng)調(diào)節(jié)劑,提高植株抗倒伏能力,預(yù)防倒伏。
 
  五是防控病蟲(chóng),化學(xué)除草。加強(qiáng)玉米病蟲(chóng)害特別是草地貪夜蛾等突發(fā)性、暴食性、流行性病蟲(chóng)害動(dòng)態(tài)監(jiān)測(cè)和預(yù)報(bào)預(yù)警,開(kāi)展綠色防控。玉米播后、出苗前及時(shí)進(jìn)行化學(xué)封閉除草,或在苗期(三葉一心至五葉期)選用適宜除草劑進(jìn)行苗后除草。規(guī)范噴藥時(shí)機(jī)、方法和用量,避免重噴、漏噴和發(fā)生藥害,提高除草效果。
 
  六是科學(xué)管理,肥水高效。前茬小麥秸稈還田地塊以施氮肥為主,配合一定數(shù)量鉀肥,并補(bǔ)施適量微肥,其中1/3氮肥和全部鉀肥、微肥隨播種側(cè)深施,其余2/3氮肥于小喇叭口期前后機(jī)械側(cè)深施(10厘米左右)。也可采用種、肥異位同播,選用高質(zhì)量專用控釋肥一次底深施。施肥后,若土壤墑情不足應(yīng)及時(shí)澆水,有條件的推廣水肥一體化,減少化肥使用,提高水肥利用效率。
 
  七是加強(qiáng)監(jiān)測(cè),防災(zāi)減災(zāi)。加強(qiáng)干旱、高溫、臺(tái)風(fēng)等災(zāi)害監(jiān)測(cè)預(yù)警。關(guān)鍵生育時(shí)期遭遇高溫天氣和嚴(yán)重干旱,應(yīng)及時(shí)進(jìn)行灌溉;遭遇澇漬,應(yīng)及時(shí)排水。通過(guò)種植耐熱品種和及時(shí)灌溉,以及葉面噴施微肥等措施,防御高溫?zé)岷Α?br /> 
  八是適時(shí)收獲,高產(chǎn)優(yōu)質(zhì)。玉米完熟后(籽粒乳線消失、黑層出現(xiàn))再收獲,并在不影響下茬小麥播期情況下,適時(shí)晚收。機(jī)械收獲果穗或直收籽粒,收獲后及時(shí)晾曬或烘干,以防霉變,提高產(chǎn)量和品質(zhì)。
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