伊犁州杨树成龄期品种聚类筛选

目的]对伊犁州不同杨树品种生长特性进行调查,为林木的规范管理、杨树造林树种的良种选择及优质苗木的培育提供理论依据.方法]调查伊犁州27个杨树主栽品种的树高、胸径,计算出各杨树品种的材积,采用方差分析和聚类分析对27个杨树品种进行分类.结果]不同杨树品种的树高、胸径差异显著,27个杨树品种可分为4类:第1类长势最好,仅1-467、日本白杨2个品种;第2类长势较好.包括银×新12等9个品种;第3类长势良好,包括银×新4等4个品种;第4类长势一般,包括中林23、加杨、林场银×新、马里兰德4个品种.结论]从27个杨树主栽品种中筛选出长势最好的杨树品种2个,长势较好的9个,长势良好的12个,这些良种抗逆性较强,适宜在伊犁州平原林场栽培种植.

Clustering screening of maturing Populus in Yili Kazak Autonomous Prefecture

【Objective】Growth characteristics of different Populus species in Yili Kazak Autonomous Prefecture were investigated to provide references for managing forests， selecting top varieties and breeding elite seedlings. 【Method】According to ANOVA and clustering analysis， 27 main-planted Populus species were classified based on their height， diameter at breast height （DBH） and volume. 【Result】Significant difference in plant height and DBH among different species of Populus were found. The 27 Populus species were classified into 4 different groups with best （I-467 &; Japanese white poplar）， better （Yin×Xin12，etc.）， good （Yin×Xin4， etc.） and ordinary growth vigor （Zhonglin23， Populus canadensis Moench， Yin×Xin， Malilande）， respectively. 【Conclusion】Among the 27 species， 2 grew best， 9 grew better and 12 grew well， all of which had strong resistance and were suitable for planting in plain forestry farm of Yili Kazak Autonomous Prefecture.