伐根更新三倍体毛白杨引种造林试验

Introduction Test of Stump Grafting Regeneration of Triploid Chinese White Poplar

通过小美旱杨伐根嫁接三倍体毛白杨引种造林试验研究，结果表明，伐根嫁接的三倍体毛白杨成活率达88％；1年生幼树生长量大于小美旱杨扦插苗，嫁接5a后平均树高9．18m，胸径9．52m，均高于同龄的小美旱杨，且表现出了耐寒抗旱的特性。伐根嫁新方法更新三倍体毛白杨比植苗更新节省造林资金70％－80％。

Trial result of triploid Chinese white poplar grafting on Populus popularis stump indicates that the survival rate of grafting Chinese white poplar on stump is 88% ;growth of 1-year-old white poplar grafting sapling is bigger than that of cutting of Populus popularis. The mean tree height is 9.18 m and DBH is 9.52 cm after grafting 5 years and all are higher than even-aged Populus popularis. Stump grafting regeneration of triploid Chinese white poplar can save afforestation capital by 70%-80% than stock regeneration.