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以伊犁地区白杨派树种为试验材料,采用聚类方法选出具有高生长率的更为适合伊犁河流域生长的白杨派优良品种,并预测选出的优良品种的数量成熟龄。结果表明,通过聚类分析可将白杨派无性系分为两类:一类为高生长率品种,平均树高生长量为25.63 m、年均生长量为1.602 m,平均胸径为41.9 cm、年均生长量为2.619 cm,平均材积为1.337 m3、年均生长量为0.084 m3;另一类为低生长率品种,平均树高生长量为23.28 m、年均生长量为1.455 m,平均胸径为25.98 cm、年均生长量为1.624 cm,平均材积为0.506 m3、年均生长量为0.032 m3。高生长率的白杨派品种数量成熟龄在14~25年之间。
In this paper, Populus tomentosa trees in Yili area were used as experimental materials to select excellent poplar varieties with high growth rate which are more suitable for the growth of Ili River Basin and to predict the quantitative mature ages of selected elite varieties. The results showed that poplar clones could be divided into two groups by cluster analysis: one is high growth rate varieties, the average tree height growth is 25.63 m, the average annual growth is 1.602 m, the average diameter at breast height is 41.9 cm, The average growth volume was 2.619 cm, the average volume was 1.337 m3, and the average annual growth was 0.084 m3. The other was low growth rate. The average height growth was 23.28 m, and the average annual growth was 1.455 m. The average DBH was 25.98 cm, annual average growth is 1.624 cm, average volume is 0.506 m3, annual average growth is 0.032 m3. High growth rate of the Poplar varieties mature number in 14 to 25 years.