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69杨与63杨杂交选育出的六个中汉号杨树新品种在我省南部地区引种试验证明:中汉22号、17号杨比当地已推广的69杨和72杨具有更大的优越性,4年生平均单株材积为0.1419m~3和0.1438m~3,超过69杨32.3％和34.0％,平均净增益30％以上。超过72杨16.4％和18.0％。生长期长、成活率高、个体形态优良、材质好、抗逆性强,是华北南部沿淮(河)地区杨树换种及混系推广造林的理想品种。
69 Yang and 63 young hybridization breeding of six new Chinese poplar varieties introduction test in the southern region of our province: Chinese 22, 17 Yang than 69 poplar and poplar 72 have greater advantages The annual average single plant volume of 4-year-old was 0.1419m ~ 3 and 0.1438m ~ 3, which exceeded 32.3% and 34.0% of 69 Yang and the average net gain was over 30%. More than 72 poplars and 16.4% and 18.0% of poplars. Long growing season, high survival rate, individual morphology, good material, strong resistance, is the southern part of North China along the Huaihe (river) replanting and hybrids to promote afforestation ideal varieties.