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对4年生的杨树无性系引种试验表明：（1）JP14和JP15两无性系的各项测试指标超过其它无性系，生长最优；（2）JP13、JP14、JP15三无性系树冠较窄、分枝角小、枝细、生长较快，可作为农田防护林的主栽树种。
The results showed that: (1) The test indexes of both clones JP14 and JP15 exceeded that of other clones and the growth was the best; (2) The crown of JP13, JP14 and JP15 clones was narrow, Branch angle small, thin branches, rapid growth, can be used as farmland shelterbelt planted species.