一、病害种类(一)轮纹病该病是苹果贮藏期最常见的一种真菌性病害。发生初期,果面以皮孔为中心形成水渍状淡褐色小斑点,迅速扩大后呈圆形褐色病斑,不凹陷,具同心轮纹并有茶褐色粘液溢出,条件适宜时数天使整果腐烂。 First, the type of disease (A) Rot Disease This disease is the most common during storage of an apple a fungal disease. Occurred early, the fruit surface to the skin as the center of the formation of water-like light brown spots, rapidly expanding after a round brown lesion, no depression, with concentric circles and a brown mucus overflow, the conditions suitable for days when the whole fruit decay .