农业研究与应用2025，Vol.38Issue(2)：160-167,8.DOI:10.20191/j.cnki.2095-0764.2025.02.007
砧木直径及嫁接方式对大叶榉嫁接效果及苗木生长的影响
Effects of Rootstock Diameter and Grafting Methods on Grafting and Growth of Zelkova schneideriana
摘要
Abstract
[Objective]Zelkova schneideriana Hand.-Mazz.is a deciduous large tree in the ge-nus Elm of the family Ulmaceae,and it is an important native precious tree species in China.At present,Z.schneideriana is mainly propagated by grafting,so grafting technology is the basis of the seed orchard and gene bank construction,while the grafting effect of different species rootstocks is uneven.This study aimed to explore the effects of rootstock diameter and grafting methods on grafting and growth of Z.schneideriana,and provide construction technology for Z.schneideriana seed orchard and gene bank and asexual breeding technology for Z.schneideriana seedlings.[Meth-od]1.5-year-old container seedlings of Z.schneideriana were used as rootstock and scion source,and grafting experiments were carried out using four different grafting methods:M1(U-shaped opening+grafting bag),the rootstock was cut with grafting scissors to open a U-shaped opening,and the scion was grafted and tied with a transparent grafting bag to cover the scion.The bottom of the graft bag was tied to the rootstock,and the graft bag provides ample space for bud growth.M2(side veneer graft+grafting bag),a grafting knife was used to open the wound for cleft grafting,and the following steps were the same as M1.M3(side veneer grafting+plastic film),a grafting knife was used to open the wound for cleft grafting,and grafting film was used to bind and wrap the joint and scion tightly.M4(cleft grafting+grafting bag),a grafting knife was used to open the wound for cleft grafting,and the following steps are the same as M1.After grafting,the survival rate,healing rate of grafting interface,length and diameter of new shoots on the main stem were in-vestigated at different times to explore the influence of rootstock diameter and grafting method on grafting effect and growth of grafted seedlings.[Result]The investigation found that the grafting survival rate and graft union healing quality were positively correlated with the rootstock diameter.Among the four grafting methods tested,the survival rate ranked as M2>M4>M3>M1,the wound healing rate showed the order of M1>M2>M3>M4.Concerning the influence of grafting methods on the growth performance of grafted seedlings,the trunk shoot length and diameter in the treatments were M1>M2>M3>M4.The grafted seedlings with healed wounds showed signifi-cantly higher trunk shoot length and diameter compared to those with unhealed ones(P<0.01).[Conclusion]For grafting of Z.schneideriana,the seedlings with a diameter of more than 1.0 cm should be selected as the rootstocks,and the grafting method of"side veneer grafting+grafting bag"has a better grafting effect.The survival rate of seedlings in this grafting method could reach 92.22%,and the healing of wound is good.关键词
嫁接/大叶榉/砧木/成活率/生长量Key words
Graft/Zelkova schneideriana Hand.-Mazz./rootstock/survival rate/growth分类
林学引用本文复制引用
陈琴,董利军,黄开勇,陈仕昌,蓝肖,戴俊,程琳,梁瑞龙..砧木直径及嫁接方式对大叶榉嫁接效果及苗木生长的影响[J].农业研究与应用,2025,38(2):160-167,8.基金项目
2024年自治区林木良种补助项目(2024LMBZ16). （2024LMBZ16）
