Abstract:Taking one-year-old seedlings of Juglans sigillata Dode,Jugalans regia L.and Juglans cathayensis Dode as rootstocks,’Qianlinhe No.5’ early-fruiting walnut cultivars as cutting strips,the test of square block buds were carried out in summer.The results showed that the emergence time of three rootstocks were similar,the seed-ling growth of the three rootstocks were significantly different.The one-year-old Jugalns regia L.seedlings had the highest height,and the one-year-old Juglans sigillata Dode seedlings had the largest diameter.The Juglans sigillata Dode had the strongest grafting affinity,the graft survival rate,the preservation rate,the new shoot thickness and the new shoot length were the highest,77%,77%,11.22 mm,9.39 cm respectively.