黑杨派六个新无性系,是近代杨树中较优良的几个品种。以往栽植杨树,一般都在冬春两季。由于本省冬春两季干旱多风,往往成活率较低,影响了这几个新无性系杨树的发展,为了提高栽植成活率,并促使其快速生长,早日成材,我场于1980年11月2日对黑杨派的几个新无性系I——69/55杨、I——63/51杨、I——72/58杨、I——214杨和I——45/51杨进行了带叶栽植试验,以 Black Poplar sent six new clones, poplar is more modern in several varieties. In the past planting poplar, usually in winter and spring. Due to the arid and windy winter and spring seasons in our province, the survival rate is often low, affecting the development of these new clones. In order to improve the planting survival rate and promote its rapid growth, On January 2, several new clones of Populus nigra were poplar I - 69/55, I - 63/51, I - 72/58, I - 214 and I - 45/51 With leaf planting test