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为了选育出适合我省中东部平原及山区,生长快、材质良好,抗性强的优良杨树品种,我们在室内、温室、共做了42个杂交组合,其中31个组合得到了杂交苗,最后获得了杂交苗4483株,在圃地初选出43棵优良单株。这些杂交组合的亲本,主要利用省内外较速生的优良品种,做为母本的有:毛白杨、加杨、沙兰杨、小钻、香杨、黑(杂)、小叶杨、小叶杨(河北)、小青杨等9种,做为父本的有:山杨、P_(15)A、加杨、美×
In order to breed good poplar varieties that are suitable for the plains and mountains in the eastern part of our province, grow fast, have good material and strong resistance, we made 42 hybrid combinations in indoor and greenhouses, of which 31 hybrid combinations Finally, 4483 hybrid seedlings were obtained, and 43 excellent individuals were selected in the field. The parents of these hybrid combinations mainly used the relatively quick-growing fine varieties both inside and outside the province. The female parent was Populus tomentosa, Poplar, Sallaris, Drill, Fragrant, Black (miscellaneous), Populus simonii, Populus tomentosa Hebei), Populus euphratica and other 9 species, as a male parent are: aspen, P_ (15) A, plus Yang, the United States ×