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全國農(nóng)技中心組織召開油菜苗前期生產(chǎn)技術(shù)會商

2024-11-28 09:21:03 來源:全國農(nóng)技推廣中心 閱讀量:11863 評論

導(dǎo)讀:近日,全國農(nóng)技中心組織召開2024年全國油菜苗前期生產(chǎn)技術(shù)會商,調(diào)度當(dāng)前油菜播栽進(jìn)度。

  【農(nóng)機網(wǎng) 熱點關(guān)注】 近日,全國農(nóng)技中心組織召開2024年全國油菜苗前期生產(chǎn)技術(shù)會商,調(diào)度當(dāng)前油菜播栽進(jìn)度,分析研判有利條件和不利因素,研究提出清溝防凍、化學(xué)控苗、除草防病等關(guān)鍵技術(shù)措施,指導(dǎo)各地科學(xué)開展苗期管理,全力夯實明年夏收油菜豐產(chǎn)豐收基礎(chǔ)。12個冬油菜主產(chǎn)省農(nóng)技推廣部門業(yè)務(wù)骨干和有關(guān)專家參加了會商。
 
  會商指出,目前全國油菜播栽工作基本完成,田間苗情整體向好??偟膩砜?,播栽進(jìn)度與去年相當(dāng)、較前年略遲7—10天,據(jù)會商調(diào)度,種植面積約1.14億畝,7葉以上油菜苗占42.8%,4—6葉油菜苗占37.4%,4葉以下油菜苗占19.8%。
 
  會商強調(diào),今年油菜生產(chǎn)基礎(chǔ)較好,各地高度重視,擴(kuò)種成果進(jìn)一步穩(wěn)定。近一月,整體氣象條件好轉(zhuǎn),秋季溫度較往年高1—3度,加之播后有效降雨,土壤墑情明顯轉(zhuǎn)好,適合油菜生長,利于培育冬前壯苗,但也存在秋種期間旱澇不均、油菜苗長勢進(jìn)度不一,氣象條件復(fù)雜多變、越冬出現(xiàn)“速凍”天氣,部分區(qū)域濕害較重、根腫病等病蟲草害呈早發(fā)重發(fā)趨勢等問題。下一步,油菜生產(chǎn)技術(shù)措施應(yīng)注重分類管理,控防并舉。
 
  清溝排漬 管水防凍
 
  利用晴好天氣徹底清理田內(nèi)“三溝“,同時加深地頭溝,確保溝溝相通,排灌暢通,預(yù)防后期漬害;可利用清溝土壤進(jìn)行培土壅根,增加油菜抗寒力,寒潮來臨前,有條件的地區(qū)應(yīng)及時灌水,隨灌隨排,保持田間濕潤,能緩解凍害。
 
  因苗施策 適時調(diào)控
 
  對于出苗不勻的田塊,利用降雨前后空隙抓緊查苗補苗勻苗;對未施肥或基肥不足以及晚栽、晚播的苗情較弱的田塊,及時施提苗肥,增施磷鉀肥,每畝可追施尿素5—10公斤;對有旺長趨勢的田塊,可用15%多效唑粉劑40—50克、磷酸二氫鉀100—150克兌水噴施化控,增加油菜抗寒防凍能力,防止早薹早花和后期倒伏。
 
  綠色除草 防病防蟲
 
  針對草害發(fā)生嚴(yán)重田塊,有針對性選用單子葉、闊葉類除草劑,及時化學(xué)除草,控制用藥量,避免除草劑對油菜造成藥害;密切監(jiān)測根腫病發(fā)生態(tài)勢,如發(fā)病應(yīng)及時采取補救措施,施用生根劑如吲哚乙酸、萘乙酸等促進(jìn)長根;針對菜青蟲、蚜蟲、跳甲、斜紋夜蛾等危害嚴(yán)重的區(qū)域,應(yīng)加緊噴施廣譜殺蟲劑,做好統(tǒng)防統(tǒng)治。
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