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水稻田苗后茎叶除草技术

2024-06-11 09:46:28 来源:黑龙江省农业农村厅 阅读量:12953 评论

导读:稻田除草倡导“早期治理”理念,依据不同地区的气象条件、土壤类型、水层管理条件以及田间杂草的发生种类、叶龄等实际情况,因地制宜,合理选择适宜药剂及用药次数,精准施药,避免产生飘移药害。

  【农机网 热点关注】稻田除草倡导“早期治理”理念,采用“两封一补动态精准施药”防治策略,依据不同地区的气象条件、土壤类型、水层管理条件以及田间杂草的发生种类、叶龄等实际情况,因地制宜,合理选择适宜药剂及用药次数,精准施药,避免产生飘移药害。
 
  生产中,可具体分解为“两次封闭”、“两封一补”、“一封一杀”、“一次封杀”等几种模式。灌溉水充足稻田,杂草防控采用“两封一补”策略,插秧前和插秧后各采用土壤封闭处理1次,以达到防控整个水稻生育期杂草的目的,插后20天视两次封闭后的杂草基数,合理选择是否进行后期的茎叶喷雾补防。在灌溉水紧缺稻田,杂草防控采用“一封一杀”策略,插后土壤封闭处理1次,插后20天茎叶喷雾处理1次。
 
  苗后茎叶除草阶段:(1)以稗草为主的地块,可使用五氟磺草胺、三唑磺草酮、嘧啶肟草醚、氰氟草酯、噁唑酰草胺、二氯喹啉酸或依草情使用相关复配产品。(2)以稗草和野慈姑为主的地块,可使用嘧啶肟草醚、五氟磺草胺及相关复配产品防治。(3)以莎草科和阔叶杂草为主的地块,可在水稻分蘖末期使用灭草松或2甲·灭草松防治。(4)以野慈姑、泽泻、雨久花等阔叶杂草为主,伴有少量莎草的地块,可使用氯氟吡啶酯或灭草松+2甲4氯防治。(5)防治稻李氏禾和菰(江稗)可用三唑磺草酮或嘧啶肟草醚防治。
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