葡萄黑痘病是我国葡萄上的重要病之一,据有关资料介绍,发生范围很广,几乎所有葡萄产区都有此病的发生。一、主要症状黑痘病主要为害葡萄的幼果、幼叶、嫩梢和卷须等。幼叶感病时,呈多角形病斑、叶脉感病时因病部仃止生长,造成叶片皱缩畸形。叶片被害时,初期出现许多水渍状褐色圆形斑点,随着病情的发展,斑点逐渐扩大,病斑边缘 Grape anthracnose is one of the most important diseases on grape in our country. According to relevant information, it occurs in a wide range. Almost all grape producing areas have this disease. First, the main symptoms of acne disease mainly young fruit grapes damage, young leaves, tender shoots and tendrils and so on. Young leaves when the disease was polygonal lesions, leaf disease due to the disease only Ding growth, resulting in leaf folds deformity. When the leaves were killed, there were many water-spotted brown circular spots in the early stage. As the disease progressed, the spots gradually enlarged and the edge of the lesion