5.02.2012 г.

Още за SHAN TONG


С оглед на множеството запитвания относно качествата на хибрида Paulownia shan tong / Paulownia tomentosa х P. fortunel / , в допълнение на вече публикуваното е информацията в посочените по-долу научни статии*, където още веднъж се потвърждава изключителната бързина на растеж / достигаща до 40%-60% над paulownia elongata/ , устойчивост на заболявания и високото качеството на добитата дървесина.


A Report on the Breeding of Shaantong No.3 and No.4

Fan Junfeng; Wang Zhongxin; Zhang Zhengping; Zhou Yongxua;Xie Bin; Yu Zhongyan; Fu Yuain; Wang Anmiu;Zhu Yiping; Wu Shuiquan(Shaanxi Forestry Research Institute, 712100, Yangling Shaanxi; Shaanxi Forestry School
Through 11 Years' study, Shaantong No. 3 and Shaantong No. 4, two superior clonesof Paulownia, were selected from the bybreds of first generation of artificial cross-breeding betweenPaulownia tomentosa and P. fortunel. The main characteristics of those 2 clones are fastgrowth, good wood quality and high tolerance to harsh corditions. In 7 years old plantation forcomparison trial, the wood volumes of Shaantong No. 3 and Shaantong No. 4 are 47. 6% and63. 7% higher than that of Yuza No. 1 (control clone) respectively. The wood mechanicalproperties of Shaantong No. 3 is obviously superior to Yuza No. 1. And its ability to resistwitchesbroom disease is similar to that of Yaza No. 1. The wood mechanical properties of Shaantong No.4 is similar to that of Yuza No. 1.

THE BREEDING OF SUPERIOR PAULOWNIA CLONE SHANTONG  

Wang Zhongxin Fu Yuqin Fan Junfeng Yan Lin Zhang Jinyong Yu Zhongyan (Shaanxi Forestry lnstitute of Science)
Shantong No 1 and No 2 are superior clones of Paulownia selected by artificial cross-breeding.They grow fast,trunks of them are straight,growth in volume is respectively 61.6% and 42.9% faster than that of Paulownia elongata, adaptabilities are fine,the incidence of paulownia witches broom is about 20- 40% lower than that of P.elongata.They are damaged not seriously by clania variegata snellen.They can be not only extended in Guanzhong and Weibei Areas,but also planted with trial In the south of Shaanxi.

* при проявен интерес , отправете запитване за линк към източника.

Ето как изглеждат понастоящем редови едногодишни фиданки p.shan tong насадени на неполивна площ в Силистренско.  Това , което следва да се отбележи не е постигнатата височина за един сезон , а постигнатия среден диаметър , който е видимо по-голям спрямо останалите видове засадени в страната  / и при това при неполивни условия ! /.