3种核桃砧木嫁接对比试验研究

Comparative Experiment Study on Grafting of Three Kinds of Walnut Rootstocks

以泡核桃、核桃、野核桃1年生播种苗为砧木,黔林核5号早实核桃良种为接穗,开展夏季方块芽接试验。试验结果表明:3种砧木出苗时间相近,3种砧木苗生长有显著差异,1年生核桃苗苗高最高,1年生泡核桃苗地径最大。泡核桃嫁接亲和力最强,嫁接成活率、保存率、新梢粗度、新梢长度均最高,分别为77%、77%、11.22 mm、9.39 cm。

Taking one-year-old seedlings of Juglans sigillata Dode,Jugalans regia L.and Juglans cathayensis Dode as rootstocks,’Qianlinhe No.5’early-fruiting walnut cultivars as cutting strips,the test of square block budswere carried out in summer.The results showed that the emergence time of three rootstocks were similar,the seed-ling growth of the three rootstocks were significantly different.The one-year-old Jugalns regia L.seedlings had thehighest height,and the one-year-old Juglans sigillata Dode seedlings had the largest diameter.The Juglans sigillata Dode had the strongest grafting affinity,the graft survival rate,the preservation rate,the new shoot thicknessand the new shoot length were the highest,77%,77%,11.22 mm,9.39 cm respectively.