国产中文字幕电影,日本a∨视频
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地點: 西安市
開展時間: 2025-03-13
舉辦單位: 中國機械工業(yè)聯(lián)合會、中國通信工業(yè)協(xié)會
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地點: 武漢市
開展時間: 2025-03-14
舉辦單位: 北京鼎成創(chuàng)贏國際展覽有限公司
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地點: 成都市
開展時間: 2025-03-15
舉辦單位: 四川省農機服務協(xié)會、四川省農業(yè)機械學會、四川省農業(yè)工程學會、四川省5G產業(yè)聯(lián)盟智慧農業(yè)專委會、中國天
香蕉臺風災后恢復生產技術指導意見
2024-09-11
08:52:43
來源:全國農技中心 閱讀量:16999
評論
【農機網 熱點關注】 近日,受超強臺風“摩羯”影響,海南、廣東香蕉產區(qū)出現強風雨,局地香蕉受災較重。為指導受災產區(qū)科學開展災后恢復生產,最大限度減輕災害影響,農業(yè)農村部種植業(yè)管理司會同全國農業(yè)技術推廣服務中心、國家香蕉產業(yè)技術體系,研究提出香蕉臺風災后恢復生產指導意見。
全面評估受災程度
臺風過后,應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)、支撐設施、灌溉設施的受損情況。按照輕度、中度、重度劃分受災區(qū)。輕度標準為植株傾斜或輕度倒伏、根系未嚴重受損、葉片部分撕裂。中度標準為植株部分倒伏、莖稈受損但未折斷、根系部分裸露或受損、葉片嚴重撕裂。重度標準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。排水后適當松土,提高土壤透氣性,加快根系恢復。高濕條件下,受傷葉片易傳播香蕉葉斑病和黑星病,應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,應及早清理蕉園,預防發(fā)生。
扶正樹體培固根系
對輕度受災園區(qū),用竹竿、木樁等支撐傾斜或倒伏植株,支撐桿應與地面呈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。對中度受災園區(qū),扶正倒伏或嚴重傾斜植株后及時培土,增強植株根系的抓地力,培土時可混施有機肥或腐熟農家肥,促進根系恢復。扶正后,避免過度修剪損壞嚴重的葉片和莖稈。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,進行傷口消毒,防止病菌感染。
肥料運籌促進生長
對輕度受災園區(qū),適量施用速效復合肥或有機肥,并結合葉面噴施磷酸二氫鉀,促進葉片恢復和新芽萌發(fā)。對中度受災園區(qū),施用復合微生物肥料以及氨基酸、腐殖酸、海藻酸等產品,刺激香蕉根部再生長,增加根部有益微生物菌群,增強植株抗逆性和災后恢復力。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。除進行根系施肥外,還應噴施葉面肥,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)恢復生產
對于重度受災園區(qū),植株存活概率低,應立即拔除完全倒伏、莖稈折斷、根系嚴重損壞的植株。及時將病殘體清理出田間,以防病害擴散,使用石灰或多菌靈等,對受災區(qū)域土壤進行消毒處理。拔除后的空地,可重新種植香蕉苗,優(yōu)先選擇留芽,適當密植增強植株抗風性。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,應及時在旁邊挖芽補種。
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