桃疮痂病又名桃黑星病,在我地是为害晚熟桃的一种最为主要的果实病害。该病一般发病率为20％～30％,严重时可达40％～60％。果实发病多在果实梗洼附近,最初呈淡褐色斑点,逐渐发展成暗褐色,后呈略突起的黑色痣状斑点,斑点大小2～3mm,严重发生时病斑聚合成片。由于病菌扩展仅限于表皮组织,发病后果肉仍可继续生长,而表皮因死亡而生长停止,因此病 Peach scab disease, also known as peach scab, is one of the most important fruit diseases in late-maturing peaches in my country. The general incidence of the disease is 20% to 30%, severe up to 40% to 60%. Fruit disease mostly in the vicinity of the stalk of the fruit, initially showed a light brown spots, and gradually developed into a dark brown, slightly protruding after the black mole spots, spot size 2 ~ 3mm, severe case of lesion polymerization into pieces. As the pathogen expansion is limited to epidermal tissue, after the onset of the pulp can continue to grow, and the epidermis growth due to death to stop, so the disease