运用数量遗传学的原理和方法，分别剖析了白花泡桐接干强度与树高、胸经和材积生长的关系，接干后分枝强度与整个树冠结构的遗传相关和表型相关，计算了通径系数。在此基础上估测了原因性状的决定程度。研究结果表明，泡桐接干能力对林木生长和树冠结构都有重要的影响。 By using the principles and methods of quantitative genetics, the relationship between the dry strength of Paulownia fortunei and the height of the tree, the growth of the thoracic meridian and the volume of the breast was analyzed. The correlation between the branch strength and the whole crown structure and the phenotype was analyzed. Path coefficient. On this basis, the degree of decision of the cause and trait is estimated. The results showed that Paulownia to dry the ability of tree growth and canopy structure has an important impact.