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2024年全國秋糧“一噴多促”技術意見
2024-08-06
10:03:13
來源:全國農業技術推廣服務中心 閱讀量:12723
評論
【農機網 熱點關注】當前,主產區玉米陸續進入開花乳熟期,中稻處于孕穗抽穗期,大豆即將進入開花結莢期,是產量形成關鍵期,也是“一噴多促”窗口期,但奪取秋糧豐收還面臨洪澇、高溫、干旱、冷害和病蟲等災害威脅。在秋糧生育中后期,將葉面肥、調節劑、抗逆劑、殺蟲殺菌劑等混合噴施,一次作業可以實現促生長發育、促灌漿成熟、促災后恢復、促產量提高等多重效應,是秋糧中后期有災防災、無災增產的關鍵措施。堅持“分類施策、優選肥藥、精準噴施、確保安全”的原則,推進實施“一噴多促”,全力夯實秋糧豐產豐收基礎。
(一)因地制宜,分類施策。東北地區春玉米處于開花乳熟期、春大豆處于開花結莢期,中稻處于孕穗抽穗期,要重點關注漬澇、低溫冷害、早霜等災害威脅,以及玉米螟、雙斑長跗螢葉甲、大斑病,大豆菌核病、食心蟲,水稻稻瘟病、紋枯病、鞘腐病、稻曲病、二化螟、稻蝽象甲等病蟲害。黃淮海地區夏玉米即將進入抽雄開花期、夏大豆進入開花結莢期,要重點關注北部漬澇和南部高溫,以及玉米南方銹病、褐斑病、玉米螟、草地貪夜蛾、甜菜夜蛾、棉鈴蟲,大豆霜霉病、豆莢螟等病蟲害。長江中下游地區中稻處于孕穗抽穗期,要重點關注高溫、干旱、洪澇、寒露風等自然災害,以及紋枯病、稻曲病、稻瘟病、二化螟、稻縱卷葉螟、稻飛虱等病蟲害。西北地區春玉米多處于抽雄開花期、春大豆處于結莢鼓粒期、夏大豆處于開花結莢期,要重點關注干旱和早霜,以及雙斑長跗螢葉甲、葉螨,大豆食心蟲、豆莢螟、霜霉病等病蟲害。要根據各地玉米大豆生育進程、病蟲害和自然災害,因地因苗因時因災綜合實施“一噴多促”。
(二)優選肥藥,科學搭配。應對自然災害,高溫干旱地區可噴施磷酸二氫鉀、中微量元素水溶肥和抗旱抗逆制劑,漬澇地塊及時排水后可葉面噴施尿素和磷酸二氫鉀,早霜威脅大的地區可噴施磷鉀肥或液體膜。玉米生長調節劑可選用三十烷醇、噻苯隆、蕓苔素內酯、吲哚丁酸等,大豆生長調節劑主要選擇三十烷醇、蕓苔素內酯、吲哚丁酸等。大豆生長調節劑主要選擇蕓苔素內酯、噻苯隆、赤·吲乙·蕓苔、14-羥蕓·噻苯隆、調環酸鈣等。應對病蟲害,玉米殺菌劑可選用吡唑醚菌酯、苯醚甲環唑、吡唑醚菌酯·戊唑醇、醚菌酯·氟環唑等,
殺蟲劑可選用氯蟲苯甲酰胺、甲氨基阿維菌素苯甲酸鹽、溴氰菊酯、高效氯氟氰菊酯等;大豆殺菌劑可選用吡唑醚菌酯、嘧菌酯、吡唑醚菌酯·氟環唑、苯甲·丙環唑等,殺蟲劑主要選擇氯蟲苯甲酰胺、溴氰菊酯、高效氯氟氰菊酯、甲維·毒死蜱等。水稻殺菌劑可選用三環唑、吡唑醚菌酯微囊懸浮劑、噻呋酰胺、嘧菌酯、肟菌·戊唑醇等,殺蟲劑主要選擇三氟苯嘧啶、四氯蟲酰胺、茚蟲威、乙基多殺菌素等。
(三)適時噴施,精準用量。時間上,作業時風力應在三級以內、溫度不超過30℃,一般選擇在無雨天的上午9時前、下午4時后進行,避開正午高溫時段;如噴后24小時內遇中到大雨,要及時補噴;可因地制宜選擇無人機夜間作業。用量上,采用無人機作業時,每畝噴液量1.5升以上,并在藥液中添加適量的噴霧助劑,提高霧滴沉降、抗飄移、抗蒸發等性能。采用高地隙噴桿
噴霧機、車載式擔架機進行噴霧作業時,畝噴液量要達到30升以上。
(四)統一作業,確保安全。作業前依照有關法規提前公告,作業時設立警示牌防止人畜中毒和傷亡事故發生。優先選擇無人機統一噴防作業,飛行速度控制在3—5米/秒,飛行高度要根據無人機載重量進行調整,載重30升以下無人機飛行高度距作物冠層2—3米,載重30升以上無人機飛行高度距作物冠層3.5—4.5米,防止作業時吹斷莖稈;無人機起降作業時,應遠離障礙物和人員,作業人員應穿戴必要的防護用品,避開噴霧下風位,嚴禁在施藥區穿行,作業時禁止吸煙及飲食。對不適用于無人機作業的田塊,可因地制宜采用高地隙噴桿噴霧機、車載式擔架機等進行噴霧作業。噴施作業前,綜合評估潛在風險,防止噴霧霧滴飄移造成非靶標生物毒害和周邊作物藥害。大規模施藥前須開展小范圍試驗。
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