桃树细菌性溃疡病,又名枯萎病、细菌性流胶病或胴腐病。主要分布在美国东南部、太平洋沿岸和新西兰等地。症状:此病主要发生在枝条、骨干枝和树干上。当病菌侵入树皮后,被害处呈褐色的椭圆形块斑,并附有胶状物或水渍状的溃疡病斑,大小为0.5～40英寸或更长些。正在扩展的病斑,通常在其边缘外侧呈现出水渍状或褐色条纹;后期病斑稍凹陷,树皮下的组织呈深褐色。环生有溃疡病斑的枝条和主枝常常死亡。当细菌性溃疡病的病斑环绕树干一周,或主枝上发生有复合侵染时,可使桃树死亡。 Peach bacterial ulcer disease, also known as wilt disease, bacterial meningitis or caries rot. Mainly in the southeastern United States, the Pacific coast and New Zealand and other places. Symptoms: The disease occurs mainly in shoots, branches and trunks. When the bacteria invade the bark, the victim was brown oval patches, and with jelly or water stain-like ulcer lesions, the size of 0.5 to 40 inches or longer. Lesions that are expanding, usually showing water-stained or brown stripes on the outside of their margins; lessened lesion at later stages, dark brown under the bark. The branches and main branches around which there are ulcer lesions often die. When the bacterial ulcer disease spots around the trunk of a week, or the main branch of a complex infection occurs, you can make the peach death.