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山東省2020年玉米生產(chǎn)技術(shù)意見(jiàn)

2020-04-30 14:59:09 來(lái)源:山東省農(nóng)業(yè)農(nóng)村廳 閱讀量:22118 評(píng)論

導(dǎo)讀:今年我省玉米生產(chǎn),要繼續(xù)調(diào)整優(yōu)化玉米種植結(jié)構(gòu),豐富多元化種植模式,以粒用玉米為主,適度發(fā)展鮮食玉米、青貯玉米和糧飼兼用玉米;調(diào)整生產(chǎn)方式,從高產(chǎn)為主向高產(chǎn)、高效、綠色、高質(zhì)的方向轉(zhuǎn)變

  【農(nóng)機(jī)網(wǎng) 科技創(chuàng)新】 今年我省玉米生產(chǎn),要繼續(xù)調(diào)整優(yōu)化玉米種植結(jié)構(gòu),豐富多元化種植模式,以粒用玉米為主,適度發(fā)展鮮食玉米、青貯玉米和糧飼兼用玉米;調(diào)整生產(chǎn)方式,從高產(chǎn)為主向高產(chǎn)、高效、綠色、高質(zhì)的方向轉(zhuǎn)變;堅(jiān)持良種良法配套,推動(dòng)農(nóng)機(jī)農(nóng)藝融合,降低生產(chǎn)成本,發(fā)揮品種高產(chǎn)潛力;確保“一增四改”“機(jī)械單粒精播”“適期收獲”“一防雙減”等成熟關(guān)鍵技術(shù)和主推品種的推廣應(yīng)用,做好“水肥一體化”“種肥精準(zhǔn)同播”“條帶旋耕”等新技術(shù)和新品種的引進(jìn)、試驗(yàn)、示范和推廣,在玉米生產(chǎn)技術(shù)和品種上做到推廣應(yīng)用一批、示范儲(chǔ)備一批、引進(jìn)試驗(yàn)一批。
 
  一、穩(wěn)定粒用玉米面積,豐富玉米種植結(jié)構(gòu)
 
  受異常天氣影響,我省玉米生產(chǎn)連續(xù)兩年有所波動(dòng),今年在新冠疫情爆發(fā)的情況下,保障我省玉米的豐產(chǎn)豐收,對(duì)于維持國(guó)民經(jīng)濟(jì)健康發(fā)展和社會(huì)穩(wěn)定有著重要的意義。各玉米優(yōu)勢(shì)產(chǎn)區(qū)首先要保持粒用玉米面積的相對(duì)穩(wěn)定,在此基礎(chǔ)上,結(jié)合當(dāng)?shù)厥袌?chǎng)容納能力、機(jī)械服務(wù)能力、加工能力、消費(fèi)能力、農(nóng)民接受能力等因素,適度、穩(wěn)妥發(fā)展鮮食玉米、特用玉米、青貯玉米、糧飼兼用玉米等,切忌貪新求大;面積較大的合作社或種糧大戶可開(kāi)展玉米與其他作物的輪作或者間作等種植模式的試驗(yàn)示范。
 
  根據(jù)具體情況,一是在生產(chǎn)基礎(chǔ)條件好、機(jī)械化程度高、適宜機(jī)械作業(yè)、產(chǎn)量高而穩(wěn)定的玉米優(yōu)勢(shì)主產(chǎn)區(qū),選用高產(chǎn)潛力大、穩(wěn)產(chǎn)抗逆、適宜機(jī)收的品種,確保產(chǎn)能穩(wěn)定和降低生產(chǎn)成本;二是根據(jù)當(dāng)?shù)叵M(fèi)習(xí)慣、市場(chǎng)容納能力,種植甜玉米、糯玉米、特用玉米等,適當(dāng)拉開(kāi)收獲間隔,避免采摘后扎堆上市,影響種植效益,有條件的可冷藏反季節(jié)銷(xiāo)售或進(jìn)行深加工,延長(zhǎng)產(chǎn)業(yè)鏈,提高種植效益;三是在畜牧業(yè)集中或者有青貯、黃貯飼料加工企業(yè)的地區(qū),根據(jù)需求規(guī)模發(fā)展青貯玉米或糧飼兼用玉米,鼓勵(lì)訂單種植,不宜盲目擴(kuò)大;四是承接科研單位、高?;蛘邍?guó)家農(nóng)業(yè)相關(guān)項(xiàng)目的合作社、種糧大戶等,可以進(jìn)行玉米和其他作物的間作套種或輪作示范、新技術(shù)、新品種的試驗(yàn)示范和展示;五是靠天吃飯、機(jī)械化程度低的區(qū)域,借墑播種,如錯(cuò)過(guò)播種期難以成熟,可改種其他對(duì)生產(chǎn)條件要求不高的作物。
 
  各地要繼續(xù)加強(qiáng)基礎(chǔ)設(shè)施建設(shè),近年我省玉米生產(chǎn)受干旱或澇害影響較大,黃灌區(qū)提前做好水資源的調(diào)度,確保播種后澆得上蒙頭水,更要提前疏通溝渠,提高短時(shí)強(qiáng)降雨或天氣持續(xù)降雨情況下的排澇能力。各地要加大新技術(shù)、新機(jī)具、新品種的引進(jìn)、篩選、改進(jìn)和示范力度,科學(xué)指導(dǎo)農(nóng)民選擇和使用。
 
  二、做好播前準(zhǔn)備,提高播種質(zhì)量
 
  當(dāng)前玉米生產(chǎn),以機(jī)械化為主,適期高質(zhì)量播種是豐收的基礎(chǔ)。各地要精心備播,提前備好良種、肥料、機(jī)械,培訓(xùn)好農(nóng)機(jī)手,調(diào)試好播種機(jī),力爭(zhēng)小麥?zhǔn)斋@后立即貼茬直播夏玉米,實(shí)現(xiàn)一播全苗,打好豐收基礎(chǔ)。
 
  (一)選好種子。應(yīng)根據(jù)地力、光溫、耕作、管理、灌溉、機(jī)械等因素綜合考量,選擇適宜當(dāng)?shù)氐钠贩N。春玉米播種早,生育期長(zhǎng),病蟲(chóng)害少,積溫高,可選擇高產(chǎn)潛力大、抗粗縮病、耐密、晚熟品種,充分發(fā)揮品種高產(chǎn)潛力;普通農(nóng)田夏玉米可種植登海605、京農(nóng)科736、鄭單958、鑫瑞76、立原296、青農(nóng)11、登海652、明科玉77等耐密、抗倒、適合機(jī)收、高產(chǎn)、穩(wěn)產(chǎn)、抗逆性強(qiáng)的品種;承擔(dān)科研或財(cái)政項(xiàng)目的小面積高產(chǎn)攻關(guān)可選擇登海605、青農(nóng)11等高產(chǎn)潛力大、耐密植、光熱和水肥利用效率高、抗逆的品種,以充分挖掘當(dāng)?shù)馗弋a(chǎn)潛力;示范田可采用登海605、青農(nóng)11、京農(nóng)科736等耐密、抗逆、高產(chǎn)、穩(wěn)產(chǎn)、宜機(jī)收的品種;糧飼兼用玉米可選擇登海605、德單5號(hào)等生物量大、籽粒產(chǎn)量高、抗逆的品種;青貯玉米可選擇登海605、魯單258、禾豐飼玉3號(hào)等生物產(chǎn)量高、適口性好的品種;鮮食玉米可選擇青農(nóng)206、西星五彩鮮糯、濟(jì)糯33、京科糯2000等口感、色彩、賣(mài)相好的品種;籽粒機(jī)收可選擇登海518、金來(lái)376、魯星5163、奧原7號(hào)、汶單307等生育期適中、籽粒脫水快、穗位適中、抗倒性強(qiáng)的品種。
 
  (二)處理好種子。種子要適宜單粒精量,純度≥98%,發(fā)芽率≥95%,凈度≥98%,含水量≤13%。正確的藥劑處理種子可以有效預(yù)防多種病蟲(chóng)害。含有噻蟲(chóng)嗪、吡蟲(chóng)啉等成分的種子處理制劑可用來(lái)防治地下害蟲(chóng)、薊馬、蚜蟲(chóng)、灰飛虱等苗期害蟲(chóng);含咯菌腈·精甲霜、苯醚甲環(huán)唑、吡唑醚菌酯或戊唑醇等成分的種子處理制劑可防治根腐病、莖腐病和絲黑穗病等;種子處理盡量做到整地區(qū)統(tǒng)一推進(jìn)、統(tǒng)一技術(shù)、統(tǒng)一藥劑,確保防治效果。
 
  (三)選擇好機(jī)械。適宜的機(jī)械是確保播種質(zhì)量的關(guān)鍵,小麥玉米連作的要采用帶秸稈切碎和拋撒功能的聯(lián)合收割機(jī),小麥?zhǔn)斋@同時(shí)切碎秸稈還田,要求小麥留茬≤20厘米,秸稈切碎長(zhǎng)度≤10厘米,切斷長(zhǎng)度合格率≥95%,拋灑不均勻率≤20%,漏切率≤1.5%。玉米播種應(yīng)選擇多功能、高精度、種肥同播的單粒精播機(jī)械;小麥秸稈粉碎質(zhì)量差的地區(qū),可選擇清茬(或滅茬)玉米精量播種機(jī);土層板結(jié)或帶肥量大的地區(qū),可選擇深松多層施肥玉米精量播種機(jī);選擇具備仿形功能的播種機(jī)械,保證播深一致,出苗整齊。
 
  (四)播種方式及密度。春播玉米在5厘米地溫穩(wěn)定在10度以上即可播種,溫度過(guò)低發(fā)芽緩慢,容易受病菌及害蟲(chóng)危害。鮮食玉米生育期短,5月上旬至7月下旬均可播種。夏玉米在小麥機(jī)收后立即機(jī)械單粒精播,實(shí)現(xiàn)小麥機(jī)收、秸稈切碎還田、玉米機(jī)械精播、化肥深施“一條龍”作業(yè),有條件的可采用破茬深松免耕播種機(jī)。粗縮病發(fā)生的地區(qū)夏玉米播期可適當(dāng)推遲。等行距播種時(shí)行距60厘米,播深3~5厘米,做到播深一致、行距一致、覆土一致、鎮(zhèn)壓一致,防止漏播、重播或鎮(zhèn)壓輪打滑。播種密度比預(yù)定收獲密度應(yīng)增加10%左右,耐密型玉米一般大田每畝播種5000粒左右,示范田5500粒左右,高產(chǎn)攻關(guān)田5800~6000粒,大穗型品種4600粒左右,高產(chǎn)攻關(guān)田5300粒左右。
 
  (五)鮮食玉米隔離種植。種植甜玉米、糯玉米等鮮食玉米需要與其他玉米隔離種植,以防外來(lái)花粉串粉后影響品質(zhì)或口感。一是空間隔離,即與其他花期相近的玉米間隔距離不小于200米。二是時(shí)間隔離,即與其它類(lèi)型玉米的花期間隔應(yīng)在25天以上;三是自然屏障隔離,即利用房屋、林帶等自然障礙物進(jìn)行隔離。
 
  三、加強(qiáng)水肥管理,確保穗足穗大粒多
 
  科學(xué)的水肥運(yùn)籌不僅可以提高水肥利用效率,還是形成合理群體、發(fā)揮品種高產(chǎn)潛力、提高成穗率、確保源足庫(kù)滿的保障。苗期主要是長(zhǎng)根、增葉和莖節(jié)分化,力爭(zhēng)苗全、苗齊、苗勻、苗壯;穗期主要是長(zhǎng)葉、拔節(jié)和雌雄穗分化,力爭(zhēng)穗足穗大、個(gè)體健康抗逆;粒期主要是開(kāi)花受精,籽粒形成并灌漿,力爭(zhēng)粒足粒大、不早衰、千粒重高。
 
  (一)播種期。底肥或種肥隨播種帶狀施用,優(yōu)先選用深松多層施肥和定位施肥玉米精播機(jī)械。肥料推薦使用緩控釋肥。帶施底肥要8~10厘米側(cè)深施,防止燒種和燒苗。播后立即澆“蒙頭水”,有利于早出苗、出全苗、成苗壯。高產(chǎn)攻關(guān)田和規(guī)模種植的玉米田可以采用水肥一體化。搶時(shí)播種未澆“蒙頭水”且未有效降水的,有水澆條件時(shí)立即澆水,以保證種子盡早萌發(fā)和出苗后墑情,確保苗全和苗齊。
 
  (二)苗期。苗期適當(dāng)干旱有利于根系下扎,起到蹲苗的效果,但如果長(zhǎng)期干旱則應(yīng)及時(shí)澆水;如遇強(qiáng)降水形成田間積水,應(yīng)及時(shí)排水。苗期如遇強(qiáng)風(fēng)倒伏,一般不用扶正,幼苗可自行矯正。植株如有分蘗,無(wú)需拔除。苗期一般不需進(jìn)行施肥。
 
  (三)穗期。小喇叭口至大喇叭口期,是夏玉米需肥的關(guān)鍵時(shí)期,大喇叭口到抽雄期是玉米需水的臨界期,對(duì)水分尤其敏感,如遇旱應(yīng)及時(shí)灌溉,尤其要防止“卡脖旱”造成雌雄穗發(fā)育不同步。墑情差時(shí)借水追施穗肥,形成大穗。穗肥以氮肥為主,每畝追施氮肥10~15公斤,也可追施磷鉀肥,利用機(jī)械在距植株10厘米左右處開(kāi)溝10厘米深施。普通地塊施用緩控釋肥后如不出現(xiàn)脫肥現(xiàn)象,可不追施穗肥。土壤水分過(guò)多也會(huì)造成發(fā)育受阻,空稈率增加和倒伏,如遇強(qiáng)降雨應(yīng)及時(shí)排水。高產(chǎn)攻關(guān)田可采取中耕培土等措施,促進(jìn)氣生根發(fā)育,提高植株抗倒能力。
 
  (四)粒期。是籽粒形成和灌漿的關(guān)鍵時(shí)期。遇旱及時(shí)澆水,高產(chǎn)攻關(guān)田地皮見(jiàn)干就澆。后期漬水也會(huì)降低根系活力,葉片變黃,引起倒伏,要注意及時(shí)排水。開(kāi)花期增施氮肥,可以提高葉片光合效率、延長(zhǎng)葉片功能期?;7室阅蛩貫橹?,高產(chǎn)攻關(guān)田酌情增加用量。施用時(shí)可結(jié)合澆水或趁降雨前追施,以提高肥效。也可噴施磷酸二氫鉀和尿素,用作葉面肥,延長(zhǎng)葉片功能期,增加光合產(chǎn)物轉(zhuǎn)化。
 
  四、科學(xué)防治病蟲(chóng)草害,減少產(chǎn)量損失
 
  據(jù)預(yù)測(cè),2020年全國(guó)玉米病蟲(chóng)害發(fā)生接近常年,我省總體中度發(fā)生,重點(diǎn)是要防控草地貪夜蛾、玉米螟、棉鈴蟲(chóng)、二代黏蟲(chóng)、玉米蚜蟲(chóng)、二點(diǎn)委夜蛾、薊馬、莖腐病、南方銹病、褐斑病、彎孢葉斑病、小斑病等。要堅(jiān)持因地制宜、分區(qū)施策的原則,以綠色防控技術(shù)為支撐,大力推進(jìn)專(zhuān)業(yè)化統(tǒng)防統(tǒng)治與綠色防控技術(shù)融合。主要是采取種子處理、苗期病蟲(chóng)害防治、天敵保護(hù)利用和中后期病蟲(chóng)防治技術(shù),保障玉米生產(chǎn)安全。
 
  (一)重視苗期病蟲(chóng)草害防治。播種后出苗前土壤墑情好時(shí)可用乙草胺、異丙甲草胺、乙·莠懸浮劑等土壤噴霧防除一年生雜草,未進(jìn)行土壤封閉除草或封閉除草失敗的田塊,可在玉米3~5葉期,雜草2~4葉期用煙嘧磺隆、苯唑·莠等進(jìn)行苗后莖葉噴霧除草。為避免藥害產(chǎn)生,煙嘧磺隆除草地塊避免使用有機(jī)磷農(nóng)藥,同時(shí)注意噴灑均勻,不重噴、不漏噴,確保除草質(zhì)量并注意用藥安全。玉米5~8葉期,用三唑酮可濕性粉劑或多菌靈進(jìn)行葉面噴霧,預(yù)防和防治褐斑病;在玉米心葉末期,選用代森銨、吡唑醚菌酯、肟菌·戊唑醇等殺菌劑噴施防治葉斑類(lèi)病害;玉米苗期和心葉末期可選用氯蟲(chóng)苯甲酰胺、甲氨基阿維菌素、蘇云金桿菌、溴酰·噻蟲(chóng)嗪等防治二點(diǎn)委夜蛾、玉米螟、粘蟲(chóng)、甜菜夜蛾及其他鱗翅目害蟲(chóng);選用乙基多殺菌素、噻蟲(chóng)嗪等噴霧防治薊馬、灰飛虱等刺吸式害蟲(chóng);也可選用復(fù)配制劑氯蟲(chóng)·噻蟲(chóng)嗪、氯蟲(chóng)·高氯氟等兼治鱗翅目和刺吸式害蟲(chóng)。鮮食玉米害蟲(chóng)防治盡量選用生物方法。
 
  (二)大力推廣“一防雙減”。穗期容易發(fā)生大小斑病、銹病、紋枯病等病害和草地貪夜蛾、玉米螟、棉鈴蟲(chóng)、桃蛀螟、蚜蟲(chóng)等蟲(chóng)害。在玉米大喇叭口期一次噴施殺蟲(chóng)、殺菌復(fù)配或混合藥劑,可防治中后期多種病蟲(chóng)害,減少后期穗蟲(chóng)基數(shù),減輕病害流行程度,保護(hù)植株正常生長(zhǎng),提高葉片的光合效能,實(shí)現(xiàn)玉米增產(chǎn)增效。有條件的地區(qū),可選擇生物防治穗期害蟲(chóng)。在7月至8月中旬,玉米螟第二代和第三代成蟲(chóng)盛發(fā)期,玉米螟百株落卵量達(dá)1.0~1.5塊時(shí),釋放赤眼蜂,分兩次釋放,每次0.7萬(wàn)頭/畝,間隔5天釋放第2次。
 
  (三)高度重視草地貪夜蛾。根據(jù)草地貪夜蛾的發(fā)生發(fā)展規(guī)律,結(jié)合植保預(yù)測(cè)預(yù)報(bào),強(qiáng)化統(tǒng)防統(tǒng)治和聯(lián)防聯(lián)控,及時(shí)控制害蟲(chóng)擴(kuò)散危害。在成蟲(chóng)發(fā)生高峰期,可采用殺蟲(chóng)燈、性誘捕器以及食物誘殺等理化誘控措施,誘殺成蟲(chóng),減少田間落卵量,壓低發(fā)生基數(shù)。重點(diǎn)抓好玉米苗期到抽雄期的幼蟲(chóng)防治,盡量在低齡(1-3齡)幼蟲(chóng)期用藥,對(duì)幼蟲(chóng)蟲(chóng)口密度高、集中連片發(fā)生區(qū)域,抓住低齡期實(shí)施統(tǒng)防統(tǒng)治和聯(lián)防聯(lián)控,對(duì)分散發(fā)生區(qū)實(shí)施重點(diǎn)挑治和點(diǎn)殺點(diǎn)治。噴藥選在清晨或者傍晚,重點(diǎn)噴施玉米心葉、雄穗和雌穗等部位。由于草地貪夜蛾對(duì)很多農(nóng)藥具有抗性,藥劑可選用農(nóng)業(yè)農(nóng)村部推薦的草地貪夜蛾的應(yīng)急防治用藥,如乙基多殺菌素、氯蟲(chóng)苯甲酰胺、氯蟲(chóng)苯甲酰胺、茚蟲(chóng)威、虱螨脲、蟲(chóng)螨腈等,及時(shí)開(kāi)展科學(xué)防治,注意輪換用藥和安全用藥。
 
  五、注意天氣,采取輔助措施
 
  近年干旱、高溫、強(qiáng)降雨、臺(tái)風(fēng)等天氣造成了播種困難、授粉不良和倒伏等現(xiàn)象,影響了我省玉米產(chǎn)量水平的進(jìn)一步提高。各地要密切關(guān)注天氣預(yù)報(bào),提早進(jìn)行防范,采取輔助措施預(yù)防或減輕損失。
 
  (一)確保群體光合環(huán)境。高產(chǎn)攻關(guān)田出現(xiàn)小、弱、病株時(shí),要及時(shí)拔除,減少養(yǎng)分消耗或防止病害傳播,改善群體通風(fēng)透光條件,為正常植株創(chuàng)造好的光合環(huán)境。普通地塊除出現(xiàn)有傳染可能的病株要拔除外,其他小、弱株,可不進(jìn)行專(zhuān)門(mén)拔除,減少人工投入。
 
  (二)化控促壯防倒伏。高肥水、密度較大、生長(zhǎng)過(guò)旺、降水較多、倒伏風(fēng)險(xiǎn)較大的地塊,尤其是高產(chǎn)攻關(guān)地塊在玉米7~11片葉片展開(kāi)期噴施化控劑預(yù)防倒伏,可以適度控制株高,促進(jìn)莖稈粗壯和葉片光合能力,增強(qiáng)抗逆能力和抗倒伏能力,有利于改善群體結(jié)構(gòu)。使用化控劑要注意合理濃度配比,防止因用量過(guò)大造成植株過(guò)矮,無(wú)法制造充足的光合產(chǎn)物,影響產(chǎn)量。密度合理、生長(zhǎng)正常的田塊和低肥力的中低產(chǎn)田、缺苗補(bǔ)種地塊不宜化控。
 
  (三)人工輔助授粉。密切關(guān)注玉米授粉情況,遇到特殊天氣及時(shí)采取應(yīng)對(duì)措施。高產(chǎn)攻關(guān)田和示范田可人工去雄和輔助授粉。大田玉米開(kāi)花授粉期間如遇連續(xù)陰雨或高溫,也要采取人工輔助授粉等補(bǔ)救措施,切實(shí)提高結(jié)實(shí)率,防止花粒,增加穗粒數(shù)。有條件的地方可用小型無(wú)人機(jī)低飛輔助散粉。
 
  (四)注重減災(zāi)防災(zāi)。密切關(guān)注天氣預(yù)報(bào),提早做好防范,開(kāi)花授粉期間遭遇高溫的,可進(jìn)行灌水或噴灌,增加土壤濕度,改善小氣候,減輕高溫可能對(duì)開(kāi)花授粉造成的熱害。中后期遭遇強(qiáng)降雨或臺(tái)風(fēng)天氣時(shí),要提早準(zhǔn)備機(jī)械,疏通溝渠,提高短時(shí)強(qiáng)降雨或天氣持續(xù)降雨情況下的排澇能力。
 
  六、適期機(jī)械收獲,確保豐產(chǎn)豐收
 
  適期收獲可以充分發(fā)揮品種高產(chǎn)潛力,降低機(jī)收損失率,確保豐產(chǎn)豐收。待玉米籽粒乳線消失時(shí)用聯(lián)合收割機(jī)收獲,收獲同時(shí)秸稈粉碎還田。在不耽誤下茬小麥播種的情況下適當(dāng)晚收建議在10月1-5日收獲。適期收獲應(yīng)大面積連片推進(jìn)、整村整鎮(zhèn)推進(jìn)、農(nóng)機(jī)農(nóng)藝聯(lián)合推進(jìn),打消農(nóng)戶怕偷怕丟的思想顧慮,提高聯(lián)合收割機(jī)工作效率。籽粒機(jī)收的玉米盡量在植株上干燥后收獲,降低籽粒破損率。玉米收獲后應(yīng)及時(shí)進(jìn)行晾曬或烘干,防止霉變。
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