天山山麓引种长山核桃初报

Introduction of Carya illinoincensis in Tianshan Mountains

对山东保存的6个品种长山核桃嫁接苗和湖北直播实生苗开展了引种栽培,同时开展了人工播种育苗试验,观测研究各品种成活、生长和越冬等情况。结果表明:4#和9#品种成活率高,苗木地径及当年枝条高生长情况均较好;5#次之;1~#和2~#品种的成活率较低,且当年枝条生长情况也较差;3#品种全部成活,但栽植当年缓苗情况较差。实生苗定植当年的平均成活率为78%,但抽梢严重,从苗基部萌发新苗占66%;当年枝条的高生长量为34.43cm,从苗基部萌出的新苗高为32.09cm。长山核桃种子的出苗率最高为82%,最低为20%。

Introduction experiments of six varieties(grafting seedlings or seedlings of Carya illinoensis from Shandong and Hubei Province)were conducted.Seedling-raising experiments of artificial planting seedling were conducted.Condition of survival,growth and overwintering of each varieties were studied.Result shows that the survival rate of the4#and9#is highest,and base stem diameter of the seedling and the height of the new branch is optimal;5#is optimal;the survival rate of the1#&2#are lowest,and the growth of the new branch is poor;All the3#varieties are fully viable,but the recover seedling period is poor.The average survival rate of seedlings is78%,but it is serious that the new branch became dry or die gradually.The new seedlings growth from base stem are66%.The height growth of the new branches is34.43cm,and the new seedling growth from base stem is32.09cm.The biggest rate of seedling emergence of Carya illinoensis is82%,and the lowest is20%.