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連續陰雨天氣如何如何高質量收獲玉米、種好小麥?

2021-10-14 11:00:28 來源:農機網整理發布 閱讀量:28232 評論

  【農機網 熱點關注】 近日北方多省份遭遇連續陰雨天氣,為秋收秋種帶來一定困難。以河北省為例,目前河北部分地塊有積水,個別玉米田因積水不能排出,已枯死;還有些地塊目前還處于不同程度的積水中,如果不能及時排出,勢必影響今年小麥播種。對此,河北省相關部門提出應對技術措施。
 
  秋收方面,針對不同地塊、不同受災程度,采取相應措施做好玉米收獲,確保糧食顆粒歸倉。
 
  1、盡快排出田間積水。對有積水的玉米田,各鄉(鎮)村要配合相關部門對河道、干渠、支渠迅速進行修復、清淤、疏通,同時調動一切可以調動的排灌設備,投入到排澇戰斗中。
 
  2、引進購置履帶式收割機。目前普通輪式玉米收割機進地作業困難,采取措施組織引進外地或者購進履帶式籽粒玉米收割機,促進機械收獲。
 
  3、及時人工搶收。對于積水嚴重地塊,收割機不能進地作業,尤其土壤粘重地塊,已經成熟的玉米,如果不及時收獲會造成倒伏、穗腐等,要發動人工及時搶收。
 
  4、搞好果穗存放減少霉變。由于果穗水分過大,收獲后的玉米果穗堆放時要及時翻晾,減少霉變腐爛,有條件的,要及時脫粒、烘干。
 
  播種方面,1.做好田間秸稈處理,對田間濕度過大,特別是有積水的地塊,盡量將秸稈清理出田外,及時散墑,能夠秸稈還田地塊要做到精細粉碎、確保還田質量。
 
  2.利用晴好天氣抓緊晾墑散墑,已經收獲的地塊,農機能夠進地時及時翻耕晾田散墑,降低土壤含水量。
 
  3.精細整地,待表墑適宜時,土壤相對含水量降至70-80%,“手握土團、落地即散”時,進行耙耢,破碎坷垃,平整土地。
 
  4.晚播適當加大播量,今年小麥播期比常年推遲,要適當加大播量,提高播種質量,10月15日以后播種在原來每畝播量25-30斤基礎上,每晚播一天增加1斤播種量,爭取在10月30日前完成播種,對于目前田間有積水整地困難的地塊待墑情適宜時再整地播種,最晚到11月中旬還可以播種,每畝播量控制在45斤以下。今年小麥播種注意不要過深,以3厘米左右為宜,以利于苗齊、苗勻。
 
  5.預防病蟲害,土壤濕度過大容易誘發病害發生,要做好種子包衣、拌種,預防莖基腐病、紋枯病等土傳或種傳病害以及地下蟲害。
 
  6.播后適墑鎮壓,播種后待土壤表墑適宜時進行鎮壓,掌握壓干不壓濕,以免發生土壤板結,通過鎮壓踏實土壤,增加種子與土壤的緊密度利于出苗和預防冬季凍害。
 
  本文由農機網(www.goodqmj.com)整理發布,資料來源:河北省農業農村廳。
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