为了获得速生、抗寒和对土壤肥力要求不严的核桃杂种,我们用了八年的时间进行了核桃杂交。以吉宝核桃作母本,用核桃、黑核桃和核桃楸的花粉对其进行授粉。在杂种实生苗的培育过程中发现:即使同一母本树的杂种实生苗其大小在各年之间也有很大差异。例如,由吉宝核桃与桃核杂交所 In order to obtain fast-growing, cold-resistant and poorly balanced soil fertility walnut hybrids, we spent eight years of walnut hybridization. To Keppel walnut as a female parent, with walnut, black walnut and juglans pollen pollination. During the breeding of hybrid seedlings, it was found that even though the size of the hybrid seedlings of the same mother-tree is quite different from one year to another, For example, by Keppel walnut and peach nuclear hybrid