枣树的枣疯病是一种毁灭性病害,近几年在鄂西北的房县、竹山、竹溪、襄阳等地发生严重。主要症状是发生大量细短的病疯枝,幼树1至2年,大树3～5年即可死掉。此病的病原物主要在枣树韧皮部寄生,通过筛管组织在树体内传导,进入冬季,病原物从地上部转移到根部越冬,次年开春后,再随树液流动 Zao jujube is a devastating disease, in recent years in Hubei Province Fangxian County, Chushan, Zhuxi, Xiangyang and other places serious. The main symptom is the occurrence of a large number of short and thin disease mad branches, young trees 1-2 years, 3 to 5 years to die trees. The disease pathogen mainly parasitic in the phloem jujube, through the screen tissue conduction in the tree body, into the winter, the pathogen from the ground to the roots of winter, the following spring, and then with the sap flow