欧美杨无性系的对比试验  

Comparative experiment of the P X euramericana (Dode) griniers clones

作　　者：董铁民 禹明甫 郑芳 张江涛 赵蓬晖 

机构地区：[1]河南省林科所,郑州450008 [2]驻马店林科所

出　　处：《河南林业科技》2001年第3期1-3,共3页Journal of Henan Forestry Science and Technology

摘　　要：试验表明 ,38个 4年生欧美杨无性系间的树高、胸径、年生长量、造林成活率差异均呈极显著水平。用座标综合法评价了各无性系的优劣 ,从中初选出 6个优良无性系 ,其胸径和全高分别比对照高 2 1%和 2 0 %。The experiments indicate that there are significant diffrences of tree height?D.B.H?annualD.b.h grouth and plant percentage among 38 four-year old clones of P.X euramericana(Dode) Griniers.We use coordinate-sytnthesixed method to evalrate the advantages and disadvantages of those clones and select six excellent clones whose D.B.H and tree height are 21% ane 20% more than the control group

关 键 词：欧美杨 性状 差异 优良无性系 对比试验 

分 类 号：S792.11[农业科学—林木遗传育种]