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【關(guān)注】玉米南方銹病防控技術(shù)指導(dǎo)意見

2024-08-16 10:53:05 來源:全國(guó)農(nóng)技中心 閱讀量:13154 評(píng)論

導(dǎo)讀:據(jù)預(yù)測(cè),今年玉米南方銹病在黃淮海玉米主產(chǎn)區(qū)偏重至大發(fā)生,全國(guó)預(yù)計(jì)發(fā)生面積8000萬畝,發(fā)生流行盛期為8月中旬至9月下旬。

  【農(nóng)機(jī)網(wǎng) 熱點(diǎn)關(guān)注】 玉米南方銹病是一種由多堆柄銹菌引起的真菌病害,病原菌主要在南方玉米周年種植區(qū)越冬,夏季隨氣流和風(fēng)雨由南向北以夏孢子長(zhǎng)距離傳播,主要危害葉片、葉鞘,嚴(yán)重時(shí)也可侵染苞葉和雄穗。最適發(fā)病溫度為24—28℃,且田間相對(duì)濕度高時(shí)流行迅速。近年來玉米南方銹病呈發(fā)生范圍擴(kuò)大、危害程度加重趨勢(shì)。據(jù)預(yù)測(cè),今年玉米南方銹病在黃淮海玉米主產(chǎn)區(qū)偏重至大發(fā)生,全國(guó)預(yù)計(jì)發(fā)生面積8000萬畝,發(fā)生流行盛期為8月中旬至9月下旬,嚴(yán)重威脅玉米生產(chǎn)安全。為加強(qiáng)玉米南方銹病防控,特制定本意見。
 
  防控策略
 
  玉米南方銹病可防、可控,必須堅(jiān)持“預(yù)防為主、綜合防治”的原則,加強(qiáng)健康栽培和田間管理,以保功能葉、促灌漿、保產(chǎn)量為目標(biāo),抓住大喇叭口至吐絲期的關(guān)鍵窗口期,結(jié)合秋糧作物“一噴多促”,及時(shí)選用對(duì)路藥劑進(jìn)行預(yù)防控制。
 
  防控技術(shù)
 
  (一)科學(xué)選藥防治。根據(jù)玉米南方銹病應(yīng)急防治推薦用藥名單,在發(fā)病初期選用吡唑醚菌酯、吡唑醚菌酯·戊唑醇、吡唑醚菌酯·氟環(huán)唑、醚菌酯·氟環(huán)唑、嘧菌酯·戊唑醇、丙環(huán)唑·嘧菌酯、氯氟醚菌唑·吡唑醚菌酯、肟菌酯·戊唑醇等藥劑,按照標(biāo)簽推薦使用劑量葉面噴霧防治,視發(fā)病嚴(yán)重度、氣候因素,隔7—10天再次施藥防治。施藥時(shí)可添加氨基寡糖素等免疫誘抗劑或蕓苔素內(nèi)酯、三十烷醇、噻苯隆、蕓苔素內(nèi)酯、胺鮮酯、二氫卟吩鐵等植物生長(zhǎng)調(diào)節(jié)劑,促進(jìn)玉米植株恢復(fù)生長(zhǎng),提高抗病、抗倒伏、抗逆能力。
 
  (二)安全高效施藥。合理選用施藥器械,優(yōu)先選用植保無人飛機(jī)等航空植保器械噴灑作業(yè),作業(yè)時(shí)環(huán)境風(fēng)速應(yīng)小于3級(jí),畝噴液量1.5—3升,并在藥液中添加植物油類、有機(jī)硅類和高分子聚合物類的沉降劑、抗蒸發(fā)劑等適宜飛防的助劑,根據(jù)株高和種植密度調(diào)整噴液量,確保整株葉面均勻噴霧。施藥時(shí)間盡量避開中午高溫時(shí)段,選擇在上午9點(diǎn)前或下午4點(diǎn)后進(jìn)行,遇風(fēng)力大于3級(jí)以上或下雨天氣,應(yīng)停止施藥。作業(yè)人員應(yīng)穿戴必要的防護(hù)用品,避開噴霧下風(fēng)位,嚴(yán)禁在施藥區(qū)穿行,作業(yè)時(shí)禁止吸煙及飲食。
 
  防控要求
 
  (一)強(qiáng)化責(zé)任落實(shí)。充分認(rèn)識(shí)抓好玉米南方銹病防控對(duì)保障玉米穩(wěn)產(chǎn)豐收的重要作用,切實(shí)落實(shí)“政府主導(dǎo)、屬地負(fù)責(zé)”防控工作機(jī)制,立足預(yù)防、抓早治小,加強(qiáng)組織領(lǐng)導(dǎo),細(xì)化防控措施,確保防控工作有力有序開展。
 
  (二)強(qiáng)化統(tǒng)防統(tǒng)治。結(jié)合秋糧作物“一噴多促”,通過購(gòu)買服務(wù)等方式,充分發(fā)揮各類專業(yè)化、社會(huì)化服務(wù)組織作用,大力推行統(tǒng)一施藥噴防作業(yè),切實(shí)提升玉米南方銹病防控時(shí)效性、組織化程度和科學(xué)化水平。
 
  (三)強(qiáng)化指導(dǎo)服務(wù)。各級(jí)植保機(jī)構(gòu)應(yīng)加強(qiáng)監(jiān)測(cè)調(diào)查,明確玉米南方銹病發(fā)生危害情況,細(xì)化技術(shù)措施,突出把好選藥、用藥關(guān),關(guān)鍵時(shí)期深入一線開展指導(dǎo)服務(wù),確保防控技術(shù)措施落實(shí)到田。
 
  (四)強(qiáng)化宣傳引導(dǎo)。充分利用電視、廣播、報(bào)刊、網(wǎng)絡(luò)、微信公眾號(hào)等媒體平臺(tái),以及發(fā)放明白紙、技術(shù)培訓(xùn)、田間觀摩等多種形式,廣泛宣傳玉米南方銹病危害的嚴(yán)重性和防控的必要性,普及病害防控知識(shí)技能,提高種植戶防治的積極性、主動(dòng)性。
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