泡桐黑痘病是危害泡桐主要病害之一,特别是对泡桐苗木危害严重.据淮阳、商水、周口市调查情况看,发病率一般为40%左右,轻者20%以上,重者达90%以上.感病植株的干、嫩梢和叶柄上的病斑凸起呈灰色到黑褐色,叶片早落或扭曲,嫩枝形成枯梢,严重影响苗木的生长,降低苗木的质量和出圃率.为了摸索防治泡桐黑痘病有效方法,我所近一、二年于5月20日-6月20日在苗圃用尿素白酒溶液(1两尿素加2两白酒 Paulownia acne is one of the major hazards of Paulownia, especially against Paulownia seedlings seriously.According to the survey of Huaiyang, Shangshui, Zhoukou City, the incidence is generally about 40%, light more than 20%, weight of up to More than 90% of the infected plants, dry shoots, shoots and petioles on the stain protruding gray to dark brown, leaves early or twisted, twigs shoots, seriously affecting the growth of seedlings to reduce the quality of seedlings and nursery Rate.In order to explore the effective method of prevention and treatment of Paulownia acne disease, I was the last one or two years in the May 20 -6 20 at the nursery with a solution of urea liquor (1 two urea plus two two white wine