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【目的】筛选出适宜新疆乃至西北地区造林的优良杨树无性系。【方法】以银白杨×新疆杨杂交的8个无性系为研究对象,在新疆北屯、玛纳斯和伊犁实验区进行区组设计,监测每年的胸径、树高,对生长指标进行分析。【结果】8个无性系在三个试验区间的生长差异明显,8个无性系的高生长量明显大于径生长量,且树高和胸径生长量之间存在极显著的正相关关系;8个无性系材积增加量在三个试验区间的差异显著。其中,北屯试验区108无性系的材积增加最大,为0.774 4 m3,527和184无性系次之,分别为0.725 5和0.667 7m3;玛纳斯试验区内536、108和389无性系的材积增长量分别为0.271 0、0.243 2和0.183 0 m3;伊犁试验区内8个无性系的材积增长量为0.269 5～0.336 6 m3,差异不显著。【结论】在单一的生长表现上,108、184、527、536无性系的高径生长优于其他无性系,其中,108无性系表现突出,是可以进行推广的优良无性系。
【Objective】 The objective of this study was to screen out excellent poplar clones suitable for afforestation in Xinjiang and Northwest China. 【Method】 Eight clones were crossed with Populus × Poplar × Poplar × Populus × euphratica Populations in this study. Block design was conducted in Beitun, Manas and Ili experimental areas in Xinjiang. The annual DBH and tree height were monitored, and the growth indexes were analyzed. 【Result】 The results showed that there were significant differences among the eight clones in the growth of the three experimental areas. The height growth of 8 clones was significantly larger than that of diameter growth, and there was a significant positive correlation between tree height and DBH growth. Clonal volume increase in the three experimental areas significantly different. Among them, the volume increase of 108 clones in Beitun experimental area was the largest, followed by 0.774 4 m3, 527 and 184 clones, which were 0.725 5 and 0.667 7m3, respectively. The volume of 536, 108 and 389 clones in Manas experimental area And the increment was 0.271 0,0.243 2 and 0.183 0 m3 respectively. The volume increment of 8 clones in Yili experimental area was 0.269 5-0.3366 m3, with no significant difference. 【Conclusion】 On the single growth performance, the height growth of 108, 184, 527, 536 clones is superior to other clones. Among them, 108 clones have outstanding performance and are good clones that can be popularized.