河北农业大学和获鹿县林业局协作进行的核桃大树多头高接技术研究,经过四年(1981～1984)的试验,通过对影响核桃高接成活的多种因子的研究,采用蜡封接穗,适当提早嫁接时期和解决伤流问题等措施,获得了较高并且较稳定的嫁接成活率,接头成活率达90%以上,接穗成活率75%以 Hebei Agricultural University and the Department of Forestry County Schiphol cooperation in the long walnut tree high access technology research, after four years (1981 ~ 1984) of the experiment, through the impact of Walnut high access to survival of a variety of factors, the use of wax seal scion , Appropriate early grafting period and to solve the problem of injury flow and other measures to obtain a higher and more stable graft survival rate, joint survival rate of 90% or more, scion survival rate of 75%