疮痂病危害特征:是柑桔最重要的真菌型病害之一,在中国的柑桔种植区都有发生。叶片染病:初期为黄色油浸状小斑点,后渐扩大成蜡黄色病斑,后期病斑木质化凸起,叶背突出,叶面凹陷,成漏斗状,发生严重时叶片扭曲、畸形。新梢染病:嫩枝梢染病后变短小,有扭曲状,但病斑不明显。幼果染病:初期产生茶褐色小斑,后在果皮上形成黄褐色圆锥形,木质化的瘤状突起。果实小,皮厚,味酸,发育畸形。 Scab damage characteristics: Citrus is one of the most important fungal diseases, citrus growing areas in China have occurred. Leaf blade disease: the initial yellow oil-like small spots, gradually expanded into a wax yellow lesions, late lignification of the disease raised prominence leaves folds, into a funnel-shaped, severe leaf distortion, deformity. New shoot disease: tender shoots become shorter after the disease, there are twisted, but the lesion is not obvious. Young fruit disease: the early generation of brown spots, the formation of tan pericarp conical, lignified tumor-like processes. Fruit is small, thick skin, Pickle, the development of deformity.