洞庭湖区欧美杨无性系选优试验研究

对16个杨树无性系树高、胸径、冠幅等指标进行了测量,也对周期性生长量变化作了测量,同时对杨树无性系的健康状况进行了调查。结果表明：在不同区域,16个欧美杨的成活率均值为54.87%;16个欧美杨在6个栽培区域地径和树高差异不大,除了11116和116地径差异波动较大,其他各无性系在地径和树高方面波动差异均不明显;通过试验处理及调查不同区域中16个欧美杨所表现的成活率、地径、树高、叶子病概率、溃疡病概率和木穴病概率特性,80号、1190号、131号、1233号、1171号、1227号、276号、11116号、139号和116号为杨树优良品种可作为进一步选育的材料。

Preliminary Report of Optimal Selection of Clones of Populus spp.in Dongting Lake Area

This paper measures he height,DBH,crown breadth and other indexes of a variety of 16 poplar clones of Populus spp.and the cyclical growth change,and investigates the health of poplar clones varieties.The results show that：（1） in different regions,the survival rate of 16 poplar average of 54.87% ;（2） the diameter and height of 16 poplar in six cultivated area have no obvious differences,in addition to the diameter difference fluctuations of 11 116 and 116,other clones have no significant diameter and height fluctuations ;（3） According to the ground diameter,tree height,leaf disease probabilities,the probability of ulcer disease and the characteristics of the wood hole disease probability obtained by test treatment and investigation in different areas,No.80,1190,131,1233,1171,1227,276,11 116,139 and 116 are proved to be fine varieties of poplar as a further breeding materials.