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这种害虫来势汹汹,“幺蛾子”千万不能忽视!

2019-06-21 18:21:00 来源:农机网原创 作者:林言 阅读量:49291 评论

导读: 近半年来,相信关注农业的各界人士、广大农民甚至每天上网的你我,应该都听过“草地贪夜蛾”这个词,这种害虫让农业农村部多次部署、各地农业部门紧急应战,小小虫子为什么能引起这么大的重视?

  【农机网 热点关注】 近半年来,相信关注农业的各界人士、广大农民甚至每天上网的你我,应该都听过“草地贪夜蛾”这个词,这种害虫让农业农村部多次部署、各地农业部门紧急应战,小小虫子为什么能引起这么大的重视?
 
  草地贪夜蛾于今年1月在我国云南省发现,至今已蔓延到18个省,涉及900多个县,危害作物面积300多万亩。目前该虫呈继续北迁趋势。不要简单认为它只是害虫的一种而已,它会严重危害粮食安全,涉及我们当中的每一个人。
 
  什么是草地贪夜蛾
 
  草地贪夜蛾俗称秋粘虫,食性杂、繁殖能力强、迁飞扩散快。原产美洲的热带和亚热带地区,是玉米上的重大迁飞性害虫,它与我国普遍发生的重大害虫普通粘虫(我们俗称的行军虫)从迁飞特征、群体扩展性、取食为害等特性的确类似。幼虫以咀嚼式口器咬食植物叶片、根茎、生长点、果实等植物组织。玉米苗期受害一般可减产10%-25%,严重危害田块可造成毁种绝收。此外,高龄幼虫还会蛀食玉米雄穗和雌穗进行取食为害。由于其食量大,尤其是到高龄期具爆发性,且吃光一地块还可成群结队迁移到周围作物田继续危害,可见其危害的严重性。
 
  2016年初,草地贪夜蛾被发现入侵非洲西部并爆发成灾,2018年在非洲造成的经济损失高达10-30亿美元,玉米毁种面积占总播种面积的5%-6%。
 
  2018年7月,草地贪夜蛾传入亚洲地区。
 
  2019年1月由东南亚入侵我国云南。农业农村部对此高度重视,要求各地农业农村部门加密监测预警,落实好属地防控责任,全力做好防控应对工作,努力实现“虫口夺粮”保丰收。
 
  高度重视、多次部署,坚决打赢草地贪夜蛾攻坚战
 
  2019年5月24日,农业农村部召开全国草地贪夜蛾防控工作视频会议,全面安排部署草地贪夜蛾防控工作。会议强调,做好草地贪夜蛾防控工作,坚决遏制其爆发成灾,事关实现全年粮食生产目标,事关稳定经济社会大局。要坚决打赢“虫口夺粮”攻坚战,赢得全年粮食和农业丰收主动权。
 
  6月5日,农业农村部、财政部紧急安排农业生产救灾资金5亿元支持地方组织开展草地贪夜蛾防控,支持虫情发生区和迁飞过渡区开展草地贪夜蛾虫害统防统治、联防联控、应急防治,坚决遏制其爆发成灾,打赢“虫口夺粮”攻坚战,切实保障全年粮食生产稳定。
 
  6月13日,农业农村部召开全国草地贪夜蛾防控工作推进落实视频会议,对防控工作进行再动员、再部署、再落实,农业农村部部长韩长赋强调,各级农业农村部门要把防控草地贪夜蛾作为当前农业农村工作的大事要事急事来抓,提高政治站位,坚持底线思维,全面监测预警,及时有效处置,确保草地贪夜蛾不大规模迁飞、不大面积连片成灾,坚决打赢草地贪夜蛾防控攻坚战,全力保障粮食和农业生产安全。
 
  会议指出,草地贪夜蛾自今年1月迁飞入侵我国以来,已扩散蔓延到18个省区市,并呈继续北迁趋势,防控形势严峻,任务紧迫艰巨。要按照“严密监测、全面扑杀、防治结合、分区施策”的要求,因地制宜推进分区防控。西南和华南周年繁殖区,要全力扑杀境外迁入虫源、全程控制虫口基数,控制迁出虫源;江南和江淮迁飞过渡区,要阻杀迁入成虫、压低繁殖基数、减少迁出虫源,减轻北方地区压力;黄淮和北方重点防范区,要重点设防、充分准备,及时诱杀成虫、主攻低龄幼虫,将危害损失控制在低限度。
 
  拿“幺蛾子”怎么办?
 
  据了解,针对草地也贪蛾,目前主要防治技术措施包括生态调控及天敌保护利用、成虫诱杀技术和幼虫防治技术三个方面。中国农业科学院植物保护研究所研究员王振营表示,草地贪夜蛾它有卵、蛹、幼虫和成虫四种形态,一般的是从卵、幼虫、成虫这几个阶段进行防治。在成虫阶段可以用杀虫灯或性诱剂进行诱杀;在幼虫阶段,可以利用生物农药或化学农药进行防治;在卵期,一些化学农药是有杀卵作用的。
 
  6月5日, 农业农村部办公厅发布《关于做好草地贪夜蛾应急防治用药有关工作的通知》,鉴于目前我国无防治该虫的登记农药,根据《农药管理条例》有关规定,农业农村部部在专家论证的基础上,提出了25种应急使用的农药产品(见下图),要求各地农业农村部门要结合当地实际情况选择推荐药剂,推荐给农民使用。


 

  消灭“幺蛾子”,大疆、极飞积极出击
 
  针对云南多地爆发草地贪夜蛾虫情情况,为尽快控制虫害,极飞科技联合善思生物科技有限公司迅速组织科研人员奔赴云南,对草地贪夜蛾幼虫展开针对性试验,并使用不同施药器械对贪夜蛾进行了防治试验,为玉米、水稻等作物的贪夜蛾田间防治提供有效手段和技术支持。
 
  为打赢草地贪夜蛾防控攻坚战,全力保障粮食和农业生产安全,DJI 大疆农业联合全国各地合作伙伴,积极参与各省市植保站、农科院组织的防控工作,对发生虫情区域的农作物进行飞防作业,帮助农户有效灭虫保产。DJI 大疆农业在云南、广西、海南、湖北、浙江等虫情发生地区,展开飞防作业,探索有效灭虫方式。


图片来源:DJI 大疆农业

  接下来,DJI 大疆农业还将联合更多合作伙伴、药企、科研院校对草地贪夜蛾的防治进行飞防实验,探索出更的防治方案。打赢草地贪夜蛾防控攻坚战,势在必行。
 
  本文由农机网原创,部分参考资料来源:农业农村部、农视网。
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