Effect of Different Grafting Dateand Methods on Survival Rate of CaryaillinoensisSeedlings

Experiments by completely randomized block were carried out on grafting survival rate of Caryaillinoensisseedlings with different grafting methods at different date in Macheng, Hubei province.On July 26, August 6, August 16, August 26 and September 6 grafting was made on 2-year C.illinoensis rootstock and on October 2018 investigations were made on survival rate of seedlings.The results showed that there were significant differences of the survival rate among different grafting dates and methods, and had evident interaction between date and methods.The experimentdemonstrated that thesurvival rate of seedlings grated in middle and late ten days of August and early ten days in September by square bud graftingwas80.85%, 81.67% and 78.47%.