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农广天地【20140707】看点介绍
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农广天地20140707集剧情:第20140707期
我国是玉米种植的大国,同时也是遭受病虫害危害比较严重的国家,其中玉米大小斑病就是我国玉米生产中最主要的两种叶部病害,由于发病时间主要是在玉米抽雄以后,田间植株高大、郁闭,防治起来相对也比较困难,因此积极预防、提早防治则对这两种病害显得尤为重要。本片就比较详细的介绍了这两种病害在我国的发生分布区域、危害情况、致病病原、发生规律以及综合防治技术等内容,希望通过收看本片能对广大的玉米种植户朋友们有所帮助。rnrn
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