果树腐烂病是由真菌潜伏侵袭引起腐烂的病害,被称为“果树癌症”,果树染上此病,轻者枝枯树死,重者毁园灭林;又叫粗皮病的苹果轮纹病,也是一种真菌所致,主要危害果实和枝干,除危害苹果外,也能侵害海棠、桃、梨、杏等果树;梨黑星病是梨园重大病害之一,年年都发生。 Fruit tree rot disease is a disease caused by the latent invasion of fungi, known as “fruit tree cancer”, the fruit trees infected with the disease, the light branches dead trees, severe destruction of the park to forest; , Is also caused by a fungus, the main damage to fruits and stems, in addition to endangering apples, but also against begonias, peaches, pears, apricot and other fruit trees; pear scab is pear one of the major diseases occur year after year.