葡萄圆斑根腐病是一种新发生的葡萄根部病害,近几年在涿鹿县葡萄产区也发现了这种病害的发生,并且蔓延很快,有逐年扩大的趋势。受害植株地上部表现是萌芽后生长缓慢,逐渐萎蔫,青干,叶缘枯焦,随之枝条枯干而死亡。根部发病,首先病菌侵入须根皮层,随之蔓延到肉质根部,在肉质根上形成褐色圆斑,并不断扩 Grapevine root rot is a new occurrence of grape root diseases. In recent years, the occurrence of this disease has also been found in the grape producing area of ​​Zhuolu County, and it has spread rapidly and has been expanding year by year. Vicia faba above the ground part of the performance is slow growth after germination, wilting gradually, green stems, leaf margin Kujiao, followed by withered branches died. The root of the disease, the first bacteria invade the fibrous roots, followed by spread to the fleshy root, the formation of brown roots in the meat round, and continue to expand