Field test of new poplar clone in Shangdong Province

QIN Guang-hua; JIANG Yue-zhong; QIAO Yu-ling; B.Nottola

摘要

Poplar is one of the dominant tree species for the establishment of fast growing plantations in Shandong Province. Eighteen poplar clones belonging to Populus aigeiros section were introduced from Italy, Turkey and domestic regions. Populus deltoides cv. 'Lux' I-69/55 (I-69), which was widely used in Shandong Province, China, was taken as control clone (I-69). Following a randomized complete block design, seedling test and controlled afforestation trials were carried out at Juxian County, Caoxian County and Laiyang City. The results showed that the poplar clone (Populus × euramericana cv. '102/74'), namely 102/74, performed well both in terms of adaptability and growth rate. The mean height of 13.9 m (H), diameter at breast height of 18.0 cm (DBH) and volume growth of 0.1445 m3 (V) were 2.2 %, 21.6% and 52.9 % higher than those of I-69 (CK), respectively, at the age of 5 years at three experimental sites. Moreover, the clone can be propagated easily and showed high resistance to poplar disease, pest as well as salinity and had longer growing period. Furthermore, wood basic density and fiber length of new poplar clone (102/74) were as same as I-69 (CK). It was concluded that the selected clone (102/74) was ideal for the establishment of fast-growing poplar plantations, especially for the pulpwood plantations in Shandong Province.

机译：杨树是山东省建立速生人工林的主要树种之一。从意大利，土耳其和国内地区引进了18个属于杨树科的杨树无性系。三角杨将在中国山东省广泛使用的'Lux'I-69 / 55（I-69）用作对照克隆（I-69）。按照随机完整的区组设计，在Ju县，曹县和莱阳市进行了幼苗测试和对照造林试验。结果表明，杨树无性系（Populus×euramericana cv。'102/74'），即102/74，在适应性和生长速度方面均表现良好。平均高度分别比I-69（CK）高13.9 m（H），胸高18.0 cm（DBH）和体积增长0.1445 m3（V）分别高2.2％，21.6％和52.9％。在三个实验地点的年龄为5岁。而且，该克隆易于繁殖并显示出对杨树病，害虫和盐分的高抗性，并且具有较长的生长期。此外，新杨树无性系的木材基本密度和纤维长度（102/74）与I-69（CK）相同。得出的结论是，选择的克隆（102/74）非常适合建立速生杨树人工林，特别是山东省的纸浆人工林。

Field test of new poplar clone in Shangdong Province

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