泡桐是我国速生、优良用材树种之一。泡桐丛枝病是当前泡桐生产中的严重病害,尤以河南、山东、山西等省发病严重,一般发病率达30—50%,严重区高达80%以上,影响林木的生长,幼苗和幼树常因发病造成枯死。随着泡桐栽植面积的扩大,尤其是进行大量无性繁殖,丛枝病有发展的趋势。泡桐丛枝病发生原因,过去有生理病、炭疽病、疮痂病、病毒等报导,但缺乏确切的 Paulownia is China’s fast-growing, one of the best timber species. Paulownia witches broom disease is the current production of paulownia serious diseases, especially in Henan, Shandong, Shanxi and other provinces a serious incidence of 30-50% of the general incidence of serious area up to 80%, affecting the growth of trees, seedlings and saplings Death often caused by the disease. With the expansion of planting area of ​​Paulownia, especially for a large number of asexual reproduction, there is a tendency for the development of the branch shoots. Paulownia witches broom disease causes, in the past there are physical diseases, anthrax, scab, viruses reported, but the lack of exact