关键词: 杨树, 杨树, 微晶化磷矿粉, 根际, 理化性质

Abstract: Aiming at screening out the Zelkova tree’s best way to graft and the best provenance suitable for propagation by grafting, one or two years old branches taken from seven different kinds of Zelkova provenances were used as scions, while four years old zelkova seedings were used as stocks. The survival rates of four kinds of grafting methods (bark grafting, double tongue grafting, cleft grafting and bud grafting) were analyzed. The results show that the average survival rate of stem grafting is 88.7%, which has an obvious advantage over bud grafting (32.4%) in spring, being significantly different at 0.01 level. The bark grafting gains the highest average survival rate in stem grafting methods which is 92.4%, having no significant difference compared with other two kinds of stem grafting methods. Analyses of survival situation between different provenances show that the scions taken from Jvnan（JN）have the highest average survival rate, which is 90.8%, and the subordinative function value is 90.34%. While the scions gathered from Shanghai Chenshan Botanical Garden (SH) have the lowest survival rate, 62.5%, and the subordinative function value is only 0.01%. The study screens out bark grafting as the best way to graft and scions from Jvnan as the best provenance.