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立秋至,農事忙,萬物趨熟
2024-08-07
10:23:28
來源:農機網整理發布 閱讀量:23004
評論
【農機網 熱點關注】 立秋,是“二十四節氣”中第十三個節氣,也是秋季的起始,秋天的第一個節氣。“立”,是開始之意;“秋”,意為禾谷成熟。立秋后,萬物開始從繁茂成長趨向成熟結果。
立秋前后中國大部分地區氣溫仍然較高,各種農作物生長旺盛,中稻開花結實,單晚圓稈,大豆結莢,玉米抽雄吐絲,棉花結鈴,甘薯薯塊迅速膨大。雙晚生長在氣溫由高到低的環境里,必須抓緊當前溫度較高的有利時機,追肥耘田,加強管理。
立秋預示著收獲的季節即將到來,農事管理也是非常重要的,下面簡單介紹一下立秋后的農事活動:

圖片來源:千圖網
水稻
“立秋”關于水稻,雙“搶”還在進行時。要抓緊搶收搶曬早稻,盡量縮短農耗期;抓緊搶插(拋栽)雙季晚稻,盡量在立秋以前完成晚稻插秧(拋栽)任務,及早轉入田間管理,采取以水調溫、葉面噴肥等措施防止高溫危害,爭取晚稻生產主動。立秋時節也是多種作物病蟲集中危害的時期,如水稻三化螟、稻縱卷葉蟆、稻飛虱、棉鈴蟲和玉米螟等,要加強預測預報和防治。
玉米
立秋后,春玉米已經從抽雄期至成熟期,玉米成熟后在不影響復種的情況下,可適當地推遲收獲期,提高玉米粒重,增加產量。當玉米苞葉干枯松散,籽粒變硬發亮呈金黃色玉米籽粒乳線完全消失時,即為玉米完熟期,此時收獲產量最高。夏玉米進入8月份以后即將抽雄授粉,玉米中后期要注意及時防治病蟲害、追加粒肥做好田間管理。
棉花
“立秋”時節也是棉花保伏桃、抓秋桃的重要時期,也是“不修棉”的打頂的最佳時機(“不修棉”的打頂時間要比傳統的整枝棉花要延后10-15天)。整枝棉花“棉花立了秋,高矮一齊揪”,除對長勢較差的田塊補施一次速效肥外,打頂、整枝、去老葉、抹贅芽等要及時跟上,以減少爛鈴、落鈴,促進正常成熟吐絮。
蔬菜
進入立秋時節,由于持續高溫,日照強烈,伏秋連旱,間有暴雨,菜田管理要求特別嚴格,要特別加強蔬菜的抗旱、防澇、追肥、中耕除草、?;ū9胺乐尾∠x害等工作。
茶葉
茶園秋耕要盡快進行,農諺說:“七挖金,八挖銀”,秋挖可以消滅雜草,疏松土壤,提高保水蓄水能力,若再結合施肥,可使秋梢長得更好。
病蟲害防治
立秋時節也是多種作物病蟲集中危害的時期,比如水稻三化螟、稻縱卷葉蟆、稻飛虱、棉鈴蟲和玉米螟等,要加強預測預報和防治。針對不同作物出現的不同害蟲,盡早使用針對性藥水,進行除蟲。
注:本文由農機網(www.goodqmj.com)整理發布,資料來源:百度百科、掌上河南百科書、童問說三農。
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