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2024年高粱生產(chǎn)技術(shù)指導(dǎo)意見

2024-05-08 09:40:28 來源:全國農(nóng)業(yè)技術(shù)推廣服務(wù)中心 閱讀量:19190 評論

導(dǎo)讀:農(nóng)業(yè)農(nóng)村部小宗糧豆專家指導(dǎo)組會同全國農(nóng)業(yè)技術(shù)推廣服務(wù)中心,以“優(yōu)選良種、種子處理、合理茬口、精細(xì)播種、科學(xué)肥水、風(fēng)險(xiǎn)防控、適期收獲”為重點(diǎn),提出2024年高粱生產(chǎn)技術(shù)指導(dǎo)意見。

  【農(nóng)機(jī)網(wǎng) 科技創(chuàng)新】 為充分發(fā)揮高粱耐旱、耐鹽堿等優(yōu)勢特性,促進(jìn)產(chǎn)量與品質(zhì)協(xié)同提高,提高種植者收益,滿足市場不同需求,根據(jù)今年生產(chǎn)形勢和氣候特點(diǎn),農(nóng)業(yè)農(nóng)村部小宗糧豆專家指導(dǎo)組會同全國農(nóng)業(yè)技術(shù)推廣服務(wù)中心,以“優(yōu)選良種、種子處理、合理茬口、精細(xì)播種、科學(xué)肥水、風(fēng)險(xiǎn)防控、適期收獲”為重點(diǎn),提出2024年高粱生產(chǎn)技術(shù)指導(dǎo)意見。
 
  優(yōu)選良種處理
 
  依據(jù)用途(釀酒、食用、飼用等)選用經(jīng)國家登記、適應(yīng)性好、抗逆性強(qiáng)、品質(zhì)優(yōu)良的專用高產(chǎn)品種。春播品種要結(jié)合當(dāng)?shù)厣鷳B(tài)條件,在保證安全成熟的前提下,生育期不宜過短,以充分利用光溫水土條件;夏播高粱作為夏收作物的后茬,宜采用早熟或中熟品種。雨量充沛地區(qū),宜選擇中散穗型品種,以抑制穗部病蟲害。機(jī)械化收獲的,宜選擇矮稈、整齊度好、不易落粒的品種。謹(jǐn)防購買夸大宣傳、跨區(qū)引進(jìn)的品種。做好種子處理,播前3—4天曬種3—5小時(shí),注意清除雜質(zhì)。對未包衣種子,建議進(jìn)行種子包衣或拌種處理,根據(jù)本地區(qū)病蟲害發(fā)生特點(diǎn),因地制宜科學(xué)選擇種衣劑。
 
  合理茬口栽培
 
  高粱不宜重茬,一般選大豆、玉米等茬口;注意詳細(xì)了解前茬除草劑使用情況,避免造成藥害。精細(xì)整地,北方秋季前茬收獲后抓緊整地(起壟),蓄水保墑,延長土壤熟化時(shí)間,達(dá)到“春墑秋保、春苗秋抓”目的;秋季未起壟的春季頂漿做壟,保蓄冬季積蓄于土壤表層的水分;一般耕地深度20—30厘米,提倡深翻,有條件的結(jié)合施用農(nóng)家肥,也可翻、耙、種一次完成。栽培模式可單作高粱,也可與大豆、花生、食用豆等間作,提倡寬窄行栽培。干旱地塊采取免耕播種或平播、壟溝播種等方式,適當(dāng)深播淺覆土,也可采用地膜覆蓋、膜下滴灌、“坐水”播種或澆水增墑后播種等抗旱節(jié)水措施;低洼地塊提早起壟散墑、提高地溫,壟上播種,適當(dāng)晚播。播種應(yīng)深淺一致、覆土薄厚一致,種子與土壤緊密接觸,一般覆土厚度不超過3厘米,播后鎮(zhèn)壓保墑。推薦使用高粱播種機(jī)。
 
  適時(shí)適量播種
 
  依據(jù)品種生育期、地溫和土壤墑情確定播期,一般10厘米耕層地溫穩(wěn)定在12℃左右,土壤含水量在15%—20%為宜(大多為5月初)。春播地區(qū)宜適當(dāng)晚播。根據(jù)品種特點(diǎn)、當(dāng)?shù)厣鷳B(tài)、生產(chǎn)條件、土壤肥力、施肥管理和種植習(xí)慣等確定密度,粒用高粱畝密度一般0.7萬—1.2萬株,特殊品種2萬株。精量播種機(jī)播種時(shí)做好清選、曬種,保證種子大小均勻、整齊一致,一般畝播量0.4—0.5公斤,青飼青貯高粱根據(jù)具體情況適當(dāng)加大播種量,人工播種需適當(dāng)加大播種量。西南高粱產(chǎn)區(qū)采用育苗移栽種植的,應(yīng)適時(shí)早栽。一般苗齡25—30天,最遲不超過35天(葉齡6葉左右)移栽。利用雨后搶墑或灌足水后移栽,栽后施清糞水。
 
  做好肥水管理
 
  肥料施用按照分期施肥、科學(xué)減量,增施基肥,施足種肥,適時(shí)追肥原則進(jìn)行。一般畝施農(nóng)家肥3000公斤,化肥用量折合純氮 11—13公斤,五氧化二磷5—8公斤,氧化鉀3—5公斤,并根據(jù)當(dāng)?shù)赝寥狼闆r和目標(biāo)產(chǎn)量適當(dāng)調(diào)整。農(nóng)家肥作底肥,磷肥、鉀肥及全部氮肥的30%結(jié)合播種一次性施入,全部氮肥的60%做拔節(jié)肥,10%做粒肥。施種肥時(shí)注意種、肥分開,以防燒種,影響出苗。如果采用一次性施肥方式,選用的肥料要長效短效結(jié)合,避免生育后期脫肥。高粱耐旱,但拔節(jié)孕穗和抽穗開花是需水關(guān)鍵期,如遇干旱,有條件地區(qū)應(yīng)及時(shí)灌水。
 
  加強(qiáng)風(fēng)險(xiǎn)防控
 
  4—6葉期結(jié)合間苗和中耕進(jìn)行除草,一般2次。精量播種地塊可不間苗,在播種后出苗前噴施高粱專用除草劑封閉除草。一般不建議苗后化學(xué)除草,若必須苗后除草,可在5—8葉期前后施用高粱專用除草劑。嚴(yán)格控制除草劑種類、用量及噴施時(shí)期,以免造成藥害。絲黑穗病、靶斑病、炭疽病、螟蟲、蚜蟲、粘蟲是高粱常見病蟲害,防治方法包括選用抗病品種,因地制宜進(jìn)行輪作倒茬、種子處理、適時(shí)播種、適宜用藥等。春播高粱區(qū)注意絲黑穗病、玉米螟等,夏播高粱區(qū)注意蚜蟲、玉米螟等,南方高粱區(qū)注意玉米螟、炭疽病等,應(yīng)早防早控??刹捎玫孛鎳娛┗驌P(yáng)撒合適藥劑防治地下害蟲、黑穗病等;在大喇叭口期噴施蘇云金桿菌,采用殺蟲燈、性誘劑、投放赤眼蜂等物理、生物方法防治螟蟲。開花前,無人機(jī)等噴施適宜藥劑,結(jié)合插草把誘蛾產(chǎn)卵滅殺棉鈴蟲。在幼蟲3齡前防治粘蟲。蚜蟲呈點(diǎn)片發(fā)生時(shí),可用適宜藥劑防控。此外還應(yīng)加強(qiáng)對災(zāi)害性天氣的預(yù)防,及早制定相應(yīng)的應(yīng)急處置預(yù)案。特別注意防范早春低溫冷害、干旱、澇災(zāi)和秋季早霜。
 
  適期收獲晾曬
 
  當(dāng)籽粒呈現(xiàn)品種固有形狀和顏色,粒質(zhì)變硬,穗下部籽粒內(nèi)含物硬化成臘質(zhì)狀,粒色光亮,含水率降至20%左右時(shí)收獲??梢圆捎萌斯せ?a href="http://tmpdc.cn/chanpin-6672.html" target="_blank">聯(lián)合收割機(jī)收獲。采用收割機(jī)收獲時(shí),要控制收割機(jī)行走速度,減少機(jī)收損失。食用高粱要適當(dāng)早收,在蠟熟末期即可收獲。南方區(qū)春播高粱收獲期一般在7月份,常常高溫多雨,建議該區(qū)高粱進(jìn)入臘熟末期后,及時(shí)收獲,抓緊晾曬,確保產(chǎn)量和質(zhì)量。
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