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植保无人飞机施药防控小麦穗期病虫害指导意见

2024-04-28 13:17:23 来源:全国农业技术推广服务中心 阅读量:10265 评论

导读:统筹考虑亩施药液量、植保无人飞机下压风力大小等因素,综合设定飞行参数,不同型号的植保无人飞机飞行参数不同,大规模施药前须开展小范围试验,确保喷雾均匀、无重喷漏喷、飘移损失小且小麦植株无折损。

  【农机网 科技创新
 
  飞行参数设置
 
  统筹考虑亩施药液量、植保无人飞机下压风力大小等因素,综合设定飞行参数,不同型号的植保无人飞机飞行参数不同,大规模施药前须开展小范围试验,确保喷雾均匀、无重喷漏喷、飘移损失小且小麦植株无折损。防控小麦穗期病虫害时,环境风速应小于二级风(<3.3m/s),施药液量2—3升/亩(防控赤霉病时应适当增加施药液量),飞行速度小于5m/s,飞行高度(离小麦冠层的高度)2—4m;施药时应适当叠加作业喷幅,增加相邻喷幅的重叠量,确保喷幅边缘有足够的雾滴沉积量,满足防控需要;施药后如遇雨,应及时补治。
 
  防控药剂选择
 
  防控小麦穗期病虫害时,提倡综合防控、一喷多效,可结合“一喷三防”措施,科学混用杀虫剂、杀菌剂、叶面肥、飞防助剂等开展综合防控,大规模施药前须开展小范围试验,确保药剂混合均匀、混配稳定、协同增效且对小麦植株无药害。
 
  防控赤霉病:选用丙硫菌唑、氰烯菌酯、氟唑菌酰羟胺、叶菌唑、戊唑醇等不同作用机理药剂,且小麦生育期内每类药剂最多使用2次,施药时要用足药量,减轻毒素污染、延缓抗性发展;如抽穗扬花期遇连续阴雨天气,应在一次用药后5—7天进行二次用药。防控蚜虫、白粉病、叶锈病:防控蚜虫轮换使用啶虫脒、吡蚜酮、高效氯氰菊酯等药剂,防控白粉病、叶锈病轮换使用氟环唑、丙环唑等药剂;对于重发田块,应在一次用药后7—10天进行二次用药。防控吸浆虫:轮换使用阿维·吡虫啉、高效氯氟氰菊酯、氯氟·吡虫啉等药剂。
 
  喷雾助剂添加
 
  施药作业前,应在药液中添加适量的改性植物油、矿物油等喷雾助剂并混合均匀,用于改善农药药液性能,提高雾滴沉降、抗飘移、耐雨水冲刷、抗蒸发等性能。
 
  注意事项
 
  (一)施药作业前,要调查作业周边环境、确定作业区域及边界。根据作业区域,综合评估潜在风险,防止喷雾雾滴飘移造成非靶标生物毒害和周边作物药害。
 
  (二)施药作业时,环境温度不超过30℃。鉴于部分地区中午气温较高,因地制宜选择在上午10点前或下午4点后施药作业。施药时可在穗部提前布放雾滴测试卡,进行雾滴密度检测,为保证飞防作业质量和防治效果,建议每平方厘米雾滴数量在30个以上。
 
  (三)起降作业时,应远离障碍物和人员,作业人员应穿戴必要的防护用品,避免处在喷雾的下风位,严禁在施药区穿行,作业时禁止吸烟及饮食。
 
  (四)施药防控后,要及时跟踪调查病虫害防治效果并做好记录。
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