采取以人工杂交为主的选、育、引常规育种结合辐射等新技术，在河南、浙江、辽宁选育优良亲本，人工杂交８１个组合（亲本单株１５８个组合），克服了某些泡桐种间花期不遇的困难，人工授粉２４１８６朵花，采杂交果９４７个。从１２１８个无性系测定试验中培育出豫桐１一５号泡桐，为具有优质、抗病、速生、丰产、于良等综合柱状优良的新品种。 81 hybrid combinations (158 parental plants) were selected in Henan, Zhejiang and Liaoning Provinces to breed elite parents and artificial parents, and to overcome some new technologies such as paulownia Difficult encounter between species of flowering, artificial pollination 24,186 flowers, picked fruit 947. From 1218 clones in the determination of the test to cultivate the Yu Tong 1 to 5 Paulownia, as a high quality, disease resistance, fast growing, high yield, Yu Liang and other comprehensive new columnar excellent varieties.