兰考泡桐是我省主要速生用材树种泡桐的主栽品种。它不仅生长快、适应性强,而且落叶早、发芽晚、树冠稀、透光度大,是农桐间作中的理想泡桐品种。由于长期无性繁殖,虽然在总体上表现出生长衰退、丛枝病严重,但其个体间在生长速度、干形、 Paul blue Paulownia is the main species of fast-growing timber tree Paulownia varieties. It is not only fast growth, adaptability, but also early leaves, sprouting late, thin crown, light transmission, is the ideal inter-crop Paulownia Paulownia varieties. Due to long-term asexual reproduction, although in general showed a growth recession, Brouch disease serious, but the individual in the growth rate, dry,