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【今日寒露】寒露主要前后农事活动指南

2021-10-08 11:06:36 来源:农机网整理发布 阅读量:29284 评论

导读:今日是寒露节气,是二十四节气中第一个带“寒”字的节气,也是一个反映气候变化特征的节气。对于农户们来说,寒露的到来,也意味着农事活动的改变,由于气温降低,这一时期的农事活动也是非常关键的。

  【农机网 热点关注】 今日是寒露节气,是二十四节气中第一个带“寒”字的节气,也是一个反映气候变化特征的节气。对于农户们来说,寒露的到来,也意味着农事活动的改变,由于气温降低,这一时期的农事活动也是非常关键的。
 
  寒露后,如有强冷空气南下,南方容易出现气温低、风力大的寒露风天气。这种天气会给双季晚稻带来很大的危害。寒露时节,北方应播种完小麦,不宜再迟,以免减产。南方应适时播油菜、种蚕豆等。此时正值晚稻抽穗灌浆期,要继续加强田间管理,做到浅水勤灌,干干湿湿,以湿为主,切忌后期断水过早。
 
  蔬菜
 
  寒露后有利于秋季蔬菜生长,是冬春棚菜地力培育和育苗有利时期,也有各种病虫害发生与危害,应安排好以下几项蔬菜农事:
 
  1、加强田间管理
 
  种植叶菜类、瓜类和茄瓜类,应加强田间管理,灌水、防旱,追施肥料,促进生长,喷施无公害农药防治病虫害,及时采收,供应市场。
 
  2、培育地力
 
  利用晴好天气,翻种棚菜田园,暴晒、风化土壤,施用有机肥,喷施土壤消毒剂,杀菌灭虫,提高肥力。
 
  3、新菜园区,可增添钢管大棚和竹棚,逐渐扩大蔬菜保护地种植面积。
 
  4、大棚的更新和维修
 
  老菜区已使用数年的竹棚如严重损坏,务必进行重新更新。以提高冬春菜棚防冻保温功能。
 
  5、冬春棚菜苗及管理
 
  是冬春棚菜育苗时期,应做好购种、种子处理、消毒、浸种催芽工作。
 
  6、病虫害发生与防治
 
  ⑴叶菜类蔬菜病虫害防治。主要有跳甲、小菜蛾、蚜虫、斜纹夜蛾等害虫。大白菜干烧心病、软腐病、病毒病、根肿病、霜霉菌等病害发生。
 
  ⑵秋季豆类病虫害防治。豆类主要有潜叶蝇、豆野螟、煤霉病、锈病、枯萎病等病虫害发生,应做好防治工作。
 
  ⑶根结线虫病和黄萎病的防治。种植和育苗的茄子、番茄、黄瓜、芹菜等可能遭受根结线虫病危害。
 
  经济作物
 
  1、寒露是播种冬小麦的好时节。常言道:“寒露种小麦,种一碗,收一斗”,“晚种一天,少收一石”。寒露种麦要抢时早播,达到出苗“匀、齐、壮”,若寒露气温低,光照不足,则需要在小麦三叶期适当浇水追肥,促进分蘖,保证冬小麦有足够的根系;反之,要适当锄划松,防止小麦因过快生长而不能安全越冬。
 
  2、要及时采摘棉花。只要天气允许,要尽快在霜前采摘棉花,以防棉花遭霜打而降低质量,造成减产。
 
  3、全年茶叶采摘基本进入尾声,茶园做好深耕结合施基肥。还在采摘的茶园,病虫害以小绿叶蝉和螨类为主,可以进行适当的预防。
 
  果树
 
  1、柑桔
 
  ⑴中晚品种及时施好采前肥。
 
  ⑵中晚品种抹除晚秋梢。特早熟品种采后及时疏剪细弱技,短截粗壮结果枝。
 
  ⑶抓好红蜘蛛、锈壁虱、粉虱等害虫的防治,山地果园做好吸果夜蛾的防治,并注意溃疡病和炭疽病的防治。
 
  ⑷做好早熟品种的采收和采后施肥。
 
  2、杨梅
 
  ⑴因地制宜进行杨梅园深翻改土工作。深翻深度30-40公分,结合改土,将草皮、杂草压埋土中。
 
  ⑵继续防治大蓑蛾与病害。
 
  ⑶继续注意台风侵害,台风过后,应对断枝及时进行疏剪,扶直植株并在根际培土,使之及早恢复树势。
 
  ⑷搞好新发展杨梅园的规划基础建设.园地宜选择交通方便,土层深厚肥沃,土壤微酸性或中性的阴坡或半阴坡(东北坡)种植。缓坡山地应开筑3-4米宽的梯地,陡坡山地可采用挖鱼鳞坑的方法栽植,但均应挖穴施足基肥。
 
  3、枇杷
 
  继续施好花前肥,做好疏蕾、疏花、树干涂白、清园、防冻等工作的劳动力安排和物资准备。
 
  4、桃
 
  晚熟品种继续施基肥。新建果园做好建园准备。
 
  5、葡萄
 
  以施基肥为重点,做好发展新葡萄园的准备工作。
 
  6、梨
 
  以继续保持最大叶面积和最佳光合效能中心,施好根外追肥,重施采后越冬基肥,加强军配虫等为害叶片的害虫防治工作。防止落叶太早而诱发二次开花,影响次年花量和产量。制订冬季修剪方案和明年的生产规划。
 
  本文由农机网(www.nongjx.com)整理发布,部分资料来源于网络。
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