枣锈病又称枣雾、枣串叶病和枣雾烟病,是侵染枣树叶片的一种主要流行性病害,各枣种植区均有分布,常在果实膨大期引起大量落叶,削弱树势,枣果皱缩,果肉含糖量大减,降低枣的产量和品质,导致枣果多数失去食用价值,重灾年份可减产60%以上甚至绝收。病株早期落叶后出现二次发芽,又导致翌年严重减产。发病原因: Jujube rust, also known as jujube, jujube and date fog tobacco disease is a major epidemic disease jujube leaves, jujube growing areas are all distributed, often in the fruit enlargement caused a large number of deciduous, weakening the tree Potential, Jujube fruit shrinkage, greatly reduced the sugar content of fruit pulp, reduce the yield and quality of jujube, jujube fruit lead to the loss of most of the value of the worst years can be cut more than 60% yield or even received. The early emergence of diseased plants after secondary germination, but also led to a serious cut the following year. Causes: