苹果斑点病是苹果最严重的真菌性病害,其经济损失大于任何其它病害,在较冷凉、潮湿地区比较盛行。主要侵染叶片和果实,在生长季节侵染叶片,引起严重早期落叶,降低树势,影响来年产量。当病擒侵染不成熟的果实时就会引起落果, Apple spot disease is the most serious apple fungal disease, the economic loss is greater than any other disease, more cool and humid areas more prevalent. Mainly infected leaves and fruits, in the growing season of inflorescence leaves, causing severe early deciduous, reducing tree vigor, affecting the coming year production. Sickness infects immature fruits that can cause fruit dropouts,