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兰州市,一向盛产大枣,仅安宁大队就曾年产200万斤,但是近年产量已减到几十万斤或十几万斤;砂井驿大队南坡生产队的数百株枣树,近十余年来由年产万斤变为颗粒无收;河口的咸水川大队也由年产13—15万斤降至2—3万斤。造成减产的原因之一是病害。我们根据感病植株发病部位叶片的形态观察与解剖镜检,进行鉴定的结果,证实是枣层锈菌引起的病害。病原菌的生物学特性、危害以及分类鉴定方法简述如下:一,病原菌的分类地位:枣层锈菌 Phakopsora ziziphi—vulgaris(P.Henn)Deit 属
Lanzhou City, has always been rich in jujube, only the Anning Brigade had an annual output of 2 million kilos, but in recent years the output has been reduced to hundreds of thousands of jin or more than ten kilos; sand wells station brigade south slope of the production team hundreds of jujube, Over the past ten years from the annual output of 10,000 pounds into crop failure; estuarine salt water brigade also by an annual output of 13-15 million pounds down to 2-3 million pounds. One of the reasons for the cut is disease. According to the morphological observation and dissection microscopic examination of the diseased parts of the infected plants, the results of the identification showed that it was a disease caused by rust of jujube layer. The biological characteristics of pathogens, hazards and classification of identification methods are summarized as follows: First, the classification of pathogens Status: jujube rust Phakopsora ziziphi-vulgaris (P.Henn) Deit