2024年7月18日 星期一 19:43:55

农业专家支招防控马铃薯晚疫病

    州农科院马铃薯研究所专家、国家马铃薯产业技术体系岗位科学家田恒林说,从目前气候情况看,今年将是一个马铃薯晚疫病偏重发生的年份,做好马铃薯晚疫病防控工作刻不容缓。要加强田间管理,注意适时培土,避免倒伏造成田间荫蔽,降低发病率;在成熟期适当提前割蔓,可避免薯块与病株接触机会,降低薯块带菌率;清沟排渍,防止田间积水,降低田间湿度。当发现中心病株时,要摘除病叶或连根及薯块全部挖出,并带出田块深埋,对病株周围的植株喷施药剂,阻止病害扩展。加强药剂防治,马铃薯现蕾至开花初期,在连续阴雨来临之前喷施2次保护性药剂进行预防。田间发病后,则选用治疗性药剂进行防治,如68.75%氟菌·霜霉威悬浮剂(银法利,60-75毫升/亩)、52.5%噁唑菌酮·霜脲氰可湿性粉剂(抑快净,23-35/亩)、72%霜脲·锰锌可湿性粉剂(克露,133-167/亩)等兑水喷雾,根据病害发展情况每510天喷1次,连续45次,药剂交替使用防效更好。

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