豫林一号泡桐的杂种优势

THE HYBRID VIGOR OF PAULOWNIA YULINENSIS—1

豫林一号泡桐是从白花泡桐(Paulownia fortunei)天然杂交种中选育出的优良无性系。是在河南郑州、睢县、禹县等八个地区,先后将三十多个泡桐种、变种、优树,类型等进行区域性对比,抗逆性,适应性试验和生物学,生态学的观察研究筛选而成的。8年的试验研究结果证明该泡桐生长快,平均单株材积比当地主要栽培的兰考泡桐(Paulownia elongata)大50％以上,并具有干型好,抗逆性强、适应性广等优良特性,是生产上很有价值的泡桐良种。

Yulinensis—1 is a new variety selected and breeded by Forest Institute of Henan Province and the other eleven units in eight ditrict including Sui county Yu county and Zhenzhou etc. By means of comparing regional test, resistance, adaptability, and studing on biology and ecology in about thirty Paulownia species, variaty, fine plant and types, the variety was screened. Ineight years, it has been proved that the variety grow fast, its mean volume of a single plant is 60％ larger than that of native Paulownia elongata, and it is characterized by good trunk shape, extensive adaptability, adequat resistance, good timber and so on. The variety is a valuable one in production.