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香蕉臺風(fēng)災(zāi)后恢復(fù)生產(chǎn)技術(shù)指導(dǎo)意見

2024-09-11 08:52:43 來源：全國農(nóng)技中心 閱讀量：16990 評論

導(dǎo)讀：農(nóng)業(yè)農(nóng)村部種植業(yè)管理司會同全國農(nóng)業(yè)技術(shù)推廣服務(wù)中心、國家香蕉產(chǎn)業(yè)技術(shù)體系，研究提出香蕉臺風(fēng)災(zāi)后恢復(fù)生產(chǎn)指導(dǎo)意見。

　　【農(nóng)機(jī)網(wǎng) 熱點關(guān)注】 近日，受超強(qiáng)臺風(fēng)“摩羯”影響，海南、廣東香蕉產(chǎn)區(qū)出現(xiàn)強(qiáng)風(fēng)雨，局地香蕉受災(zāi)較重。為指導(dǎo)受災(zāi)產(chǎn)區(qū)科學(xué)開展災(zāi)后恢復(fù)生產(chǎn)，最大限度減輕災(zāi)害影響，農(nóng)業(yè)農(nóng)村部種植業(yè)管理司會同全國農(nóng)業(yè)技術(shù)推廣服務(wù)中心、國家香蕉產(chǎn)業(yè)技術(shù)體系，研究提出香蕉臺風(fēng)災(zāi)后恢復(fù)生產(chǎn)指導(dǎo)意見。
 
　　全面評估受災(zāi)程度
 
　　臺風(fēng)過后，應(yīng)立即全面檢查香蕉植株的倒伏、折斷、葉片損壞、根系受損等情況。同時，記錄排水系統(tǒng)、支撐設(shè)施、灌溉設(shè)施的受損情況。按照輕度、中度、重度劃分受災(zāi)區(qū)。輕度標(biāo)準(zhǔn)為植株傾斜或輕度倒伏、根系未嚴(yán)重受損、葉片部分撕裂。中度標(biāo)準(zhǔn)為植株部分倒伏、莖稈受損但未折斷、根系部分裸露或受損、葉片嚴(yán)重撕裂。重度標(biāo)準(zhǔn)為植株完全倒伏或莖稈折斷、根系大部分受損。
 
　　暢通排水全面消殺
 
　　對輕中度受災(zāi)園區(qū)，及時開溝排水，降低地下水位和土壤濕度，防止根系缺氧腐爛。排水后適當(dāng)松土，提高土壤透氣性，加快根系恢復(fù)。高濕條件下，受傷葉片易傳播香蕉葉斑病和黑星病，應(yīng)及時全園噴施殺菌劑。第1次可采用苯醚甲環(huán)唑、吡唑醚菌酯、春雷霉素等治療性藥劑噴施葉片、假莖以及根部。10天后再噴一次代森錳鋅等保護(hù)性殺菌劑。噴藥時注意葉背、葉面均要噴到。受傷蕉園易發(fā)生象鼻蟲危害，應(yīng)及早清理蕉園，預(yù)防發(fā)生。
 
　　扶正樹體培固根系
 
　　對輕度受災(zāi)園區(qū)，用竹竿、木樁等支撐傾斜或倒伏植株，支撐桿應(yīng)與地面呈45°斜插，固定在植株莖桿的1/3至1/2處，固牢支撐點，防止再次倒伏。對中度受災(zāi)園區(qū)，扶正倒伏或嚴(yán)重傾斜植株后及時培土，增強(qiáng)植株根系的抓地力，培土?xí)r可混施有機(jī)肥或腐熟農(nóng)家肥，促進(jìn)根系恢復(fù)。扶正后，避免過度修剪損壞嚴(yán)重的葉片和莖稈。對莖稈有裂痕或輕微斷裂的植株，修剪至健康部位。同時，噴涂石灰、硫磺粉或波爾多液等，進(jìn)行傷口消毒，防止病菌感染。
 
　　肥料運籌促進(jìn)生長
 
　　對輕度受災(zāi)園區(qū)，適量施用速效復(fù)合肥或有機(jī)肥，并結(jié)合葉面噴施磷酸二氫鉀，促進(jìn)葉片恢復(fù)和新芽萌發(fā)。對中度受災(zāi)園區(qū)，施用復(fù)合微生物肥料以及氨基酸、腐殖酸、海藻酸等產(chǎn)品，刺激香蕉根部再生長，增加根部有益微生物菌群，增強(qiáng)植株抗逆性和災(zāi)后恢復(fù)力。同時，配施低濃度鉀肥、鈣肥，每隔7—10天施1次，連續(xù)施3次。除進(jìn)行根系施肥外，還應(yīng)噴施葉面肥，如0.3%磷酸二氫鉀溶液，每7—10天一次，連續(xù)噴施2—3次。
 
　　重建園區(qū)恢復(fù)生產(chǎn)
 
　　對于重度受災(zāi)園區(qū)，植株存活概率低，應(yīng)立即拔除完全倒伏、莖稈折斷、根系嚴(yán)重?fù)p壞的植株。及時將病殘體清理出田間，以防病害擴(kuò)散，使用石灰或多菌靈等，對受災(zāi)區(qū)域土壤進(jìn)行消毒處理。拔除后的空地，可重新種植香蕉苗，優(yōu)先選擇留芽，適當(dāng)密植增強(qiáng)植株抗風(fēng)性。若植株較小或為新留吸芽，球莖未受損的，可沿折斷處45°斜切假莖，待追加養(yǎng)分后可重新長出新葉。球莖受損的，應(yīng)及時在旁邊挖芽補(bǔ)種。

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