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泡桐炭疽病泡桐炭疽病主要在实生苗上发生,也可侵染根蘖苗和大树上发生丛枝病的部分.病菌侵染嫩茎、叶柄、叶脉和叶片.茎和叶柄上的病斑呈椭圆形,直径1-2毫米到3-5毫米,病斑中央稍坳陷.雨天,病斑内产生粉红色分生孢子盘.叶片上的病斑近圆形,直径1毫米左右,黄褐色,常成穿孔状.发病严重时,病斑连成片,常引起嫩梢干缩枯死,俗称扭耳病.
Paulownia anthracnose Paulownia anthracnose occurs mainly on the seedling, but also infects the root tillering seedlings and the occurrence of the branch of the broom disease in large trees, and the pathogen infects the stems, petioles, veins and leaves. Oval shape, 1-2 mm in diameter to 3-5 mm, lesser central depression. Rainy days, lesions produce pink conidia disk. Leaf lesions on the nearly round, about 1 mm in diameter, yellow Brown, often into perforation. In severe cases, the lesion into a film, often causing dry shoots shrinkage dead, commonly known as sickness.