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處暑|禾乃登,農機局備戰秋收

2018-08-23 16:08:37 來源:中國農機網整理發布 閱讀量:33046 評論

  【中國農機網 熱點關注】《月令七十二候集解》:"七月中,處,止也,暑氣至此而止矣。"8月23日是處暑,作為秋季的第二個節氣,意味著從今天開始,氣溫將會有明顯的下降。同時,我國大部分地區雨季將結束,降水也將逐漸減少。
 
8月23日杭州七天氣溫走勢圖
 
  此外,對于農事而言,處暑也是一個頗為重要的節氣。我國古代將處暑分為三候:“一候鷹乃祭鳥;二候天地始肅;三候禾乃登。”此節氣中老鷹開始大量捕獵鳥類;天地間萬物開始凋零;“禾乃登”的“禾”指的是黍、稷、稻、粱類農作物的總稱,“登”即成熟的意思。也就是說,處暑過后,糧食開始趨于成熟,農民們即將喜獲豐收。
 
  這個時期,夜寒晝暖,多種春作物將進入成熟階段,作物白天進行光合作用吸收養分,到晚上貯存起來,有利于作物的成熟;對水稻生產來說,早稻即將收獲,晚稻正處于田間管理和施肥的重要時期;豆類、花生、其它大秋經濟作物已經成熟待收,大白菜、蘿卜等冬季蔬菜開始播種,逐漸顯現處秋收秋種的繁忙景象。各地農機局開始細化方案,爭取為之后的大規模機械收獲奠定基礎。湖北省農機局做好農機具調度和信息服務,力爭投入各類農機具80萬臺(套)以上,確保秋季農機化生產順利進行。
 
  同時,推廣節水灌溉、施肥施藥、秸稈還田離田等生態農機化技術,為農業生產“添綠”;此外,秋冬播生產將繼續堅持“北麥南油城郊菜”布局,因地制宜開展“糧改飼”“油改飼”,發展小麥、油菜全株青貯,充分挖掘秋冬作物飼料化潛力,拓展馬鈴薯主食化功能,鼓勵冷浸濱湖地區利用冬閑季節改造稻田,發展稻田綜合種養。
 
  但是,收獲的同時還應當注意加強對災害性天氣的防范,處暑容易出現“秋風”、“伏旱”、“午后降水”、“秋綿雨”、“暴雨”等災害性天氣,影響農作物的成長與收獲。如:“秋風”會影響正在抽穗揚花的水稻,氣溫偏低會使水稻不能正常抽穗揚花;“午后降水”會使水稻出現空殼癟粒;“秋綿雨”會使已經成熟的大秋作物不能及時收割、晾曬,秋收秋種難以正常進行;“暴雨”則會造成洪澇災害,同時也容易引發山體滑坡等次生災害。
 
  因此,還需要更加注意抗旱工作的落實,隨著雨季的結束,降水開始減少,尤其是在華北、東北和西北地區更是要抓緊做好蓄水、保墑工作,以防秋種期間出現干旱而延誤冬作物的播種期;“處暑谷漸黃,大風要提防”,玉米、高粱、谷子等農作物即將進入成熟期,抗倒伏能力降低,一旦發生倒伏,會大大增強收割難度,所以,一定要提前做好防風的準備工作;同時,在臺風暴雨過后,還需要加強管理,做好病蟲害的防治工作,以免一年的辛苦就此功虧一簣。
 
  處暑之后十五日便是白露,“早秋作物普遍收,割運打軋莫懈怠。”白露是收獲的季節,富饒遼闊的東北平原開始收獲谷子、大豆和高粱,華北地區秋收作物成熟,大江南北的棉花正在吐絮,進入全面分批采收的季節。因此,在這之前一定要做好各項工作,確保秋收能夠正常進行。
 
  此文由本網整理發布,如有侵權或異議請聯系我們。
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