摘要
741杨是以银白杨×(山杨+小叶杨)杂种为母本,以毛白杨为父本有性杂交选育的单株无性系。经过区域试验和性状测定,表明741杨具有速生、优质的特点。4—9年平均单株材积超过普通毛白杨240％,超过易县毛白杨12—169％;树干通直、圆满,木材基本密度、顺纹抗压强度、抗弯曲强度、硬度等均显著优于易县毛白杨。还对741杨的适生特性进行了分析。
Poplar 741 is a clone of hybrid from 4 different species: Populus alba ×(P. davidiana+P. simonii)×P). tomentosa. The regional tests and character analysis for 741 show that it possesses the following advantages: fast growing, high quality, straight and round trunk. its average volume of 4-9 year-odd trees is 240％ higher than that of P. tomentosa and 12—169％ higher than that of P. tomentosa f. yixianensis. Its wood basic density, compressive strength parallel to the grain, bending strength and hardness are much better than those of P. tomentosa f. fixianensis. Its adaptability is also studied in this paper.
It is conasidered that 741 can be used to plant forest for wood and get the genetic gain.
出处
《林业科学》
EI
CAS
CSCD
北大核心
1991年第6期589-594,共6页
Scientia Silvae Sinicae
