大树伐根嫁接适用于杂交杨改造更新,它既可使更新树在短期内恢复成林,也可快速培育优质大苗。因此,对嫁接技术和苗期管理技术要求也较严格。 1、接穗的采集和储存:选择目的树种生长健壮的1～2年生苗木上的0.5～1厘米粗健壮条子作接穗,每100～200根捆成一捆,捆时避免戳接穗,装运过程中要轻装轻卸,防止重压,以免损伤芽体,接穗储存用沙藏法,选在背阴处。 The grafting of large trees is suitable for the transformation and regeneration of hybrid poplar, which can make the renewed tree recover the forest in a short time, and also can cultivate the high-quality big seedlings rapidly. Therefore, the grafting technology and seedling management technology requirements are more stringent. 1, collection and storage of scion: Select the purpose of species robust growth of 1 to 2 years old seedlings of 0.5 to 1 cm on the thick stout as a scion, tied for every 100 to 200 bundles, bundles to avoid stamping scion, shipping process to Light loading and unloading to prevent weight, so as not to damage the buds, scion storage sand collection method, selected in the shade.