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2024年山西省高粱生產(chǎn)技術(shù)指導(dǎo)意見(jiàn)

2024-04-02 08:33:51 來(lái)源:山西省農(nóng)業(yè)農(nóng)村廳 閱讀量:14723 評(píng)論

  【農(nóng)機(jī)網(wǎng) 地方農(nóng)機(jī)】 為切實(shí)加強(qiáng)技術(shù)支撐,進(jìn)一步提升我省高粱生產(chǎn)水平,結(jié)合氣象條件和生產(chǎn)實(shí)際,特制定2024年山西省高粱生產(chǎn)技術(shù)指導(dǎo)意見(jiàn)。
 
  一、選擇良種
 
  因地制宜選擇經(jīng)審(認(rèn))定、登記推廣的優(yōu)質(zhì)、高產(chǎn)、抗逆性強(qiáng)的專用品種。晉北地區(qū)高粱種植以早熟品種為主,可選擇敖雜1號(hào)、晉早5564、晉早5577、晉雜28號(hào)、晉雜41號(hào)、晉雜22號(hào)、晉雜12號(hào)、紅糯16號(hào)等品種。晉中、晉東南、晉南地區(qū)高粱種植以中晚熟品種為主,可選擇晉中405、晉雜34號(hào)、晉雜31號(hào)、晉雜22號(hào)、晉雜12號(hào)、晉粱111、晉糯3號(hào)、晉糯102、紅糯16號(hào)、紅纓子等品種。
 
  二、選地整地
 
  高粱忌連作,前茬以大豆、玉米、馬鈴薯等茬口為宜。要注意了解前茬除草劑使用情況,避免對(duì)高粱造成藥害。建議在秋季前茬收獲后抓緊秸稈粉碎還田和整地,耕翻深度25~30厘米,耕后地表平整,無(wú)大土塊和殘茬,表土上虛下實(shí),達(dá)到“春墑秋保、春苗秋抓”的目的。
 
  三、適期播種
 
  (一)播期。依據(jù)品種生育期、地溫和土壤墑情確定播期。一般5厘米耕層地溫穩(wěn)定在10~12℃時(shí),土壤含水量在15%~20%為宜。晉北地區(qū)適播期大多在5月中旬,晉中、晉東南、晉南地區(qū)適播期多在5月初。晚熟品種適時(shí)搶墑早播,早熟品種適時(shí)晚播。春旱嚴(yán)重的山區(qū)、坡地、朝陽(yáng)地塊,可適時(shí)早播,低洼易澇、平原地塊適當(dāng)晚播。
 
  (二)種子處理。播種前進(jìn)行曬種,在戶外陽(yáng)光下將種子平鋪3~5厘米厚,曬2~3天即可。建議選用經(jīng)種子包衣或藥劑處理后的種子。
 
  (三)播種方法。等行距種植,行距50~60厘米;寬窄行種植,寬行行距70~80厘米,窄行行距30厘米。播種深度3~4厘米,播后完成覆土、鎮(zhèn)壓。
 
  四、合理密植
 
  根據(jù)品種特點(diǎn)、當(dāng)?shù)厣鷳B(tài)、生產(chǎn)條件、土壤肥力和種植習(xí)慣等確定密度。粒用高粱中稈品種(株高在1.6~1.8米)畝留苗一般在0.7萬(wàn)~0.8萬(wàn)株,矮稈品種(株高在1.3~1.5米)畝留苗可達(dá)2萬(wàn)株。每畝播種量根據(jù)種子實(shí)際發(fā)芽率進(jìn)行適量播種,一般發(fā)芽率在95%以上的,中稈品種畝播種量0.3~0.5公斤。一般發(fā)芽率在80%~90%的,中稈品種畝播種量0.5~0.7公斤。精量播種機(jī)播種時(shí)要做好清選、曬種,保證種子大小均勻、整齊一致。
 
  五、田間管理
 
  (一)間苗除草。精量播種地塊可不間苗。人工間苗在4~6葉期進(jìn)行,除草可結(jié)合間苗和中耕進(jìn)行2次。在播種后出苗前噴施高粱專用除草劑(50%異丙甲草胺·莠去津懸浮劑150~200克/畝對(duì)水32升)封閉除草。一般不建議苗后化學(xué)除草,易產(chǎn)生藥害。若必須苗后除草,可在3~5葉期前后根據(jù)田間不同雜草類型選用適宜的高粱專用苗后除草劑除草,注意施用劑量及施用時(shí)期。
 
  (二)肥水管理。分期施肥、科學(xué)減量,增施基肥、施足種肥,適時(shí)追肥。一般畝施農(nóng)家肥3000公斤、氮磷鉀復(fù)合肥(優(yōu)選高氮、中磷、低鉀配比、總養(yǎng)分含量達(dá)40%以上的肥料)25~40公斤,可根據(jù)當(dāng)?shù)赝寥阑A(chǔ)養(yǎng)分情況和目標(biāo)產(chǎn)量適當(dāng)調(diào)整。農(nóng)家肥作底肥,復(fù)合肥結(jié)合播種一次性施入,為提高產(chǎn)量,可在拔節(jié)期畝追施10~15公斤尿素或在拔節(jié)期和灌漿期分別選用磷酸二氫鉀100克+蕓苔素內(nèi)酯5毫升+尿素100克,對(duì)水30~40升,葉面噴施高粱全株。施種肥時(shí)注意種、肥分開(kāi),以防燒種,影響出苗。高粱耐旱耐澇,但拔節(jié)孕穗和抽穗開(kāi)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。
 
  (三)病蟲(chóng)害防治。絲黑穗病、螟蟲(chóng)、蚜蟲(chóng)是高粱常見(jiàn)病蟲(chóng)害??梢虻刂埔说赝ㄟ^(guò)輪作倒茬、選用抗病品種、藥劑拌種、適時(shí)早播等農(nóng)業(yè)措施防治。利用頻振燈、黃板等物理措施防治害蟲(chóng)。拔節(jié)至抽穗開(kāi)花期注意早防早治蚜蟲(chóng),大喇叭口期用藥劑灌心或噴施防治螟蟲(chóng)。防治絲黑穗病可用6%戊唑醇懸浮種衣劑6~9 克拌100公斤高粱種子。
 
  六、適時(shí)收獲
 
  適宜收獲期在蠟熟末期,此時(shí)收獲籽粒飽滿,產(chǎn)量最高,品質(zhì)最佳。機(jī)收可在籽粒達(dá)到完熟期、葉片枯死后,籽粒含水率下降到20%左右時(shí),使用聯(lián)合收割機(jī)進(jìn)行收割。
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