泡桐是我国著名的用材树种之一。它生长快、材质好、易繁殖、适应性强,也是农桐间作的优良树种。近年来,泡桐在河南、安徽、山东、河北、山西、陕西等省发展很快,在南方各省也都有栽培。据初步统计,仅河南省的大小泡桐树已达到2.1亿株。泡桐丛枝病是泡桐最重要的一种病害。最近一些年来,随着泡桐的迅速发展,丛枝病也日趋严重,开始影 Paulownia is one of the famous timber species in our country. It grows fast, material is good, easy to multiply, adaptable, is also an excellent tree species of Intercropping. In recent years, Paulownia in Henan, Anhui, Shandong, Hebei, Shanxi, Shaanxi and other provinces developed rapidly, but also in the southern provinces have cultivated. According to preliminary statistics, only the size of Henan Province, Paulownia has reached 210 million strains. Paulownia witches broom disease is Paulownia’s most important disease. In recent years, with the rapid development of Paulownia, Brouch disease has become increasingly serious, beginning