亚洲啪啪久久中文麻豆,精华区一区二区别,7788电影网
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地點: 呼和浩特市
開展時間: 2025-03-26
舉辦單位: 內蒙古農牧業機械行業協會、內蒙古自治區經濟發展與研究促進會
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地點: 合肥市
開展時間: 2025-03-27
舉辦單位: 上海市貿促會、安徽省貿促會
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地點: 無錫市
開展時間: 2025-03-29
舉辦單位: 中國機電產品流通協會、無錫市機床工具行業協會、無錫市工業和信息化局
2025年冬油菜春季田間管理技術意見
2025-02-20
09:21:50
來源:全國農技推廣中心 閱讀量:10763
評論
【農機網 科技創新】 “雨水”將至,西南地區油菜已進入開花期,長江中游地區油菜已進入蕾薹期,長江下游地區油菜處于苗期,正是春季田管的關鍵時期。去冬以來,油菜主產區溫光好、降水少,氣象條件總體有利于油菜生長。根據目前在田油菜長勢和氣象條件,各地要突出防范“倒春寒”和菌核病等風險,著力落實“清理三溝,分類追肥,防旱防凍,病蟲防治,一促四防”等關鍵技術,全力夯實夏收油菜豐收基礎。
清理三溝
水旱輪作油菜區,應及時清理廂溝、腰溝、圍溝,保持“三溝”暢通,做到外排水溝和“三溝”相連相通,明水能排,暗水能濾,防范雨雪導致的漬害影響。可結合追施薹肥、清理三溝,壅根培土,保溫保肥防寒。
分類追肥
薹肥是確保花期、角果期氮磷鉀元素供應充足的關鍵。追施速效肥可以快速滿足分枝生長的養分供給,打牢單株角果數和千粒重基礎,提高抗寒性和抗倒性。對發生干旱的田塊,江蘇、安徽等下游稻油輪作遲播區和江西、湖南等稻稻油輪作區油菜,及早追施薹肥,適當增施鉀肥,促進油菜春發生長,增加單株干物質積累。酸性土壤產區,應增施硼肥和鈣鎂,防范花而不實和缺鈣萎縮。
防旱防凍
對發生干旱的地區,要在降溫之前及時灌溉半溝水或跑馬水抗旱,增加抗凍能力,防范旱寒疊加影響。采用葉面噴施赤霉素•蕓薹素內酯、胺鮮酯、新美洲星、黃腐酸等植物生長調節劑,提高油菜防寒抗旱能力。
病蟲防控
做好病蟲情監測和統防統治工作,霜霉病、病毒病、白斑病和蚜蟲等發生較重地區,堅持治早治小、綜合防控原則,可噴施多菌靈、烯酰嗎啉等廣譜殺菌劑防治霜霉病和白斑病,噴施噻蟲嗪、聯苯•噻蟲胺等進行防治蚜蟲和病毒病。江西等去年黑斑病嚴重地區,應在角果期用福美雙或百菌清進行防治。建議采用植保無人機實行統防統治,以提高防治效果、降低防治成本。
一促四防
主產區應在花期適時開展一促四防,并根據當地實際情況合理安排施藥時間、次數及配方。在菌核病輕度和中度發生區域,建議開花始盛期(田間有50%以上的植株開花)防治一次;在菌核病重發區域,建議初花期和盛花期各防治一次,兩次之間間隔7—10天。去年菌核病嚴重地區推薦采用氟唑菌酰羥胺•咪鮮胺、異菌•氟啶胺、啶酰菌胺、丙硫菌唑等新型藥劑,一般地區可采用菌核凈、咪鮮胺、腐霉利等常規殺菌劑,并與水溶性硼肥混合溶解后噴施。
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