以速生欧美杨中荷64号杨（Populus×euramericana“N3016”）为母本、大青杨（Populus ussuriensis）为父本，经室内人工控制水培杂交获得F1代杂交种，在寒温带半干旱地区，经苗期筛选、无性系建立、品系评比到区域化试验示范等13年多地点多指标的测定，选育出杨树杂交新品种黑青杨（ P．euramericana“N3016”×P．ussuriensis）雄性无性系。该品种干通直饱满，分枝角38．2°，11年生木材气干密度为0．35 g/cm3，纤维长宽比50．6。在齐齐哈尔地区11年生时单株平均树高、胸径和材积分别为14．8 m、16．2 cm和0．137 m3，分别超过对照品种小黑杨（ P．si-monii×P．nigra）8．4％、12．7％和33．3％。对杨灰斑病、锈病、烂皮病、溃疡病及青杨天牛（Saperda populnea）、白杨透翅蛾（ Paranthrene tabaniformis）、树蜂等抗性较强。在北纬47°56′以南、最低温-36．4℃以上、降水量大于400 mm、无霜期120 d以上的自然条件下生长良好。%F1 generation hybrids were obtained through controlled hydroponics hybridization indoors by taking P.×euramericana (Dode) cv.‘Zhonghe64’ and Populus ussuriensis Kom.as female and male parent, respectively.By determining the multi-site and multi-index for 13 years within the selection at seedling stage , establishing clone , strain appraisals and re-gionalization pilot demonstration , cloning new varieties of male , we selectedP opulus euramericana“N3016”×Populus us-suriensis.This variety is straight and full with the branching angle of 38.2°, and the air-dry density&fiber aspect ratio of 11-year-old Populus eurameir cana“N3016”×Populus ussuriensis are 0.35 g・ cm-3 and 50.6, respectively.The average tree height, DBH and the volume of 11-year-old Populus euramericana “N3016”×Populus ussuriensis in Qiqihar region are 14.8 m, 16.2 cm and 0.137 m3, respectively, which are 8.4% , 12.7%and 33.3%larger than that of the CK (Populus simonii×P. nigra) .Poup lus euramericana“N3016”×Populus ussuriensis have stronger resistance on the main diseases ( grey leaf-spot of poplar, poplar rust, Valsa sordida Nits., Botryosphaeriair bis (Tode) Grossenb.et Duggar) and the main boring beetles ( Saperda populnea L., Paranthrene Tabaniformis and Siricidae ) .Populus euramericana“N3016”×Populus ussuriensis grew well under the condition of southern latitude 47°56′, above minimum temperature of -36.4℃, precipitation of more than 400 mm, and above 120 d of frost-free period.
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