气候变暖对农作物病虫害的影响与对策

来源 :苏皖两省气象服务合作高端论坛暨学术交流研讨会 | 被引量 : 0次 | 上传用户:wxb0907
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  农作物病虫害的发生与气象条件密切相关。在全球气候变暖的大背景下,极端天气气候事件及其引发的气温、降水异常,不仅直接影响和制约着农业病虫害的发生与否、发生面积、危害程度,还对病虫害暴发流行具有前兆性指示。气候变暖会使害虫的发育速度加快、繁殖代数增加,更有利于病虫害的越冬、越夏,使病虫害发生、流行的概率增加。在弄清病虫的时空变化规律及灾变的成因后,要建立一套新的防御体系,从种植制度、品种选育、农业布局、后期防治等几个方面入手,进行综合防控,有效应对病虫害危机。
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