葡萄黑腐病在亚洲、欧洲和美洲等地带分布广泛,在葡萄生长发育期均有发生,除为害果实外,也常为害新梢、叶柄、叶片、花及卷须等。叶片发病时,在叶脉间出现分散的红色斑点,扩大后直径约2—6毫米,斑中部逐渐变为灰白色,外围褐色,病斑边缘为黑色,叶片正面上的病斑症状更为明显。 Grape black rot is widely distributed in Asia, Europe and the Americas. It also occurs during the grape growth and development period. In addition to the fruit, grape black rot often damages shoots, petioles, leaves, flowers and tendrils. When the leaves were diseased, scattered red spots appeared between the veins. After expanding, the diameter was about 2-6 mm. The center of the spot became grayish white, the periphery was brown, the edge of the lesion was black, and the symptom on the front of the leaves was more obvious.