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全國農(nóng)技中心組織3月油菜生產(chǎn)技術(shù)會(huì)商

2024-04-05 08:59:36 來源：全國農(nóng)技推廣中心 閱讀量：18526 評論

導(dǎo)讀：近日，全國農(nóng)技中心組織12個(gè)油菜主產(chǎn)省農(nóng)技推廣部門技術(shù)骨干和區(qū)域?qū)＜议_展技術(shù)會(huì)商。

　　【農(nóng)機(jī)網(wǎng) 熱點(diǎn)關(guān)注】 近日，全國農(nóng)技中心組織12個(gè)油菜主產(chǎn)省農(nóng)技推廣部門技術(shù)骨干和區(qū)域?qū)＜议_展技術(shù)會(huì)商，交流油菜田間長勢，分析有利條件和不利因素，研究油菜后期促結(jié)實(shí)、增粒重、防災(zāi)害田間管理重點(diǎn)技術(shù)措施。
 
　　3月以來，長江流域油菜主產(chǎn)區(qū)光溫充足，總體有利于油菜生長發(fā)育。上游地區(qū)已全面進(jìn)入角果期，生育進(jìn)程與往年同期相當(dāng)，中下游地區(qū)受前期多輪低溫天氣影響，生育進(jìn)程較常年推遲5—7天，正陸續(xù)進(jìn)入角果期。從有利條件看，大部分主產(chǎn)區(qū)氣溫回升速度快(較往年偏高2—4℃)，加上防災(zāi)措施及時(shí)(“一促四防”技術(shù)覆蓋率超7成)，受凍萎蔫植株復(fù)挺生長速度好于預(yù)期，田間長勢與去年基本相當(dāng)，較常年略有不足。從不利因素看，田間濕度較大，湖北大部、湖南北部、江西和安徽南部10厘米土壤墑情處于過濕狀態(tài)，預(yù)計(jì)4月上旬長江中下游仍有大范圍持續(xù)降雨過程，極易導(dǎo)致田間積水，出現(xiàn)植株早衰。
 
　　會(huì)商提出，未來一個(gè)月是油菜結(jié)實(shí)灌漿的關(guān)鍵時(shí)期，各地要聚焦促結(jié)實(shí)、增粒重、補(bǔ)損失開展田間管理。一方面，長江中下游要持續(xù)做好排漬，特別是清理田間圍溝，保持土壤墑情適宜，提高根系活力，防早衰、防次生災(zāi)害。另一方面，要廣泛開展第2輪“一促四防”，鞏固菌核病防控效果，并適當(dāng)增施角果肥，建議噴施磷酸二氫鉀和硫酸鎂混合液促進(jìn)灌漿結(jié)實(shí)，增加粒重，確保夏收油菜豐產(chǎn)。

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