泡桐生长快,适应性强。但它属于热带、亚热带树种,对温度,水分等生态条件要求又较高。在北方,一般当年苗高3米左右,即使在高水肥的圃地育苗,苗高也很难达到5米以上。采用2年生苗平茬方法育苗,又易诱发丛枝病,且经济效益低。因此,我们进行了泡桐地 Paulownia grow fast, strong adaptability. However, it belongs to tropical and subtropical species and has higher requirements on ecological conditions such as temperature and moisture. In the north, when the seedling height is about 3 meters in general, it is hard to reach a height of 5 meters even in the nursery with high water and fertilizer. Using 2-year-old seedling stubble method nursery, but also easy to induce brooms disease, and low economic benefits. Therefore, we conducted Paulownia