甘蔗凤梨病是因甘蔗感病后发出凤梨（菠萝）的气味而得名，是我国甘蔗重要病害之一。症状：感病蔗种或宿根甘蔗，初期切口变红色，常发出凤梨香味‘这时组织仍保持坚韧。其后切口处的组织变黑色．切开内部组织变红色。随着病害的发展，节间的薄壁组织逐渐败坏，中心部分变煤黑 Sugarcane pineapple disease is caused by the smell of pineapple (pineapple) after the sugarcane susceptible named, is one of the important diseases of sugarcane in China. Symptoms: Sick sugarcane or perennial sugarcane, the initial incision turns red, often issued a pineapple flavor ’At this time the organization remains tough. The tissue at the incision then turns black. Cut the internal tissue turns red. With the development of disease, the parenchyma parenchyma gradually corrupt, the central part of coal black