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安徽省应对干旱大豆玉米播种技术指导意见

2024-06-11 08:58:32 来源:安徽省农业技术推广总站 阅读量:19968 评论

导读:安徽省大豆玉米主产区气温较往年偏高1-1.5℃,降水较往年偏少1-3成,墒情不足。针对当前旱情提出如下技术指导意见。

  【农机网 科技创新】 当前,我省夏种已陆续展开,据气象部门预测,大豆玉米主产区气温较往年偏高1-1.5℃,未来10天淮北地区最高气温普遍超过30℃,局部时段将出现35℃以上高温天气,降水较往年偏少1-3成,墒情不足。针对当前旱情提出如下技术指导意见:
 
  1.及时抢墒播种。土壤墒情适宜的要抢墒播种,墒情差的要及时造墒播种或播后浇水补墒。有水肥一体化条件的地块建议播后“滴水出苗”,玉米力争6月15日前、大豆力争6月25日前完成播种。
 
  2.提高播种质量。建议播种前采用种衣剂拌种,提高大豆玉米出苗和保苗率。播前麦秸较多的田块,秸秆要打捆离田或者灭茬,减少播种时机器堵塞,预防缺苗断垄。为减少水分蒸发,建议板茬直播,提倡采用精量播种机播种,有条件的加装导航设备,保证播种行株距均匀。大豆播深3cm-4cm,玉米播深4cm-5cm。
 
  3.及时查苗补苗。出苗后及时查苗补苗,对缺苗断垄的田块尽快进行移苗补栽,确保苗全、苗匀。一般地块大豆亩保苗1.2万-1.5万株,玉米亩保苗0.45万-0.5万株,土壤水肥条件较好地块可适当提高种植密度。
 
  4.做好病虫防控。土壤墒情较好的田块,采取播后苗前化学封闭除草。未封闭除草或封闭除草效果不理想的田块,可根据土壤墒情情况、杂草种类和草龄大小,选择对路的除草剂进行茎叶防除。根据病虫发生情况,及时做好苗期病虫害防治指导。
 
  5.严防旱涝急转。防止苗后集中降雨,旱涝急转,于播后苗前开好三沟,预防涝渍灾害。根据田块和播种行向情况安排开沟方向及开沟数量,一般沟深20cm,沟宽15cm-20cm,确保三沟通畅。
 
  安徽省农业技术推广总站
 
  2024年6月5日
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