千年桐(Vernicia montana Wills)雌雄异株,天然条件下“雄株”占50％以上。由于“雄株”结实很少或不结实,直接影响了桐林产量。为提高单产、增加母株比例,苗木出圃前必须经过嫁接,而千年桐砧苗地径则直接影响嫁接成活率。为此,我们在不增加肥 Montane (Vernicia montana Wills) dioecious, natural conditions, “male” accounted for more than 50%. As “male” sturdy little or not strong, a direct impact on the production of Tong Lin. In order to improve yield, increase the proportion of mother plants, nursery stock must be grafted before the nursery stock, but the diameter of the Millennium Tong anvil seedlings directly affect the graft survival rate. To this end, we are not adding fertilizer