一、序言多年来,不少国家都在研究如何防治泡桐丛枝病,但到现在还没有研究出比较有效的防治办法,甚至可以说仍处于试验阶段。我们也做过一次嫁接接种试验。一是以无病树作砧木,以病树为接穗;二是以无病树作接穗,以病树为砧木。接活后,观察无病树染病与否。过去嫁接,通常用苗木作砧木,而这次是用种根作砧木。实践证明,种根比苗木更易嫁接。 First, the preface Over the years, many countries are studying how to control Paulownia witches broom disease, but up to now have not developed a more effective prevention and control measures, and can even say that is still in the experimental stage. We have also done a grafting vaccination trial. First, the disease-free tree for rootstock, the diseased tree as a scion; Second, the disease-free tree for the scion, the diseased tree rootstock. After living, observe disease-free tree disease or not. Grafting in the past, usually with seedlings as rootstock, and this is the rootstock for rootstocks. Practice has proved that planting more easily than grafting seedlings.