近几年来,为了大力繁育白榆优良无性系苗木,我们试用插皮接取得较好效果。嫁接时间以3月中、下旬为宜,如将接穗湿沙低温贮藏,可延至4月中旬。方法如下: 1、剪砧:选用白榆1年生实生苗作砧木。嫁接时清理砧木基部土壤,露出根际,用修枝剪从地面将砧木剪成马耳形斜面。 2、削接穗:选白榆优树或优良无性系 In recent years, in order to vigorously breed fine elm seedlings of elm, we try to pick the better access to skin effect. Grafting time in March, late is appropriate, such as scion wet sand storage, can be extended to mid-April. The method is as follows: 1, cut anvil: use white elm perennial seedlings for rootstock. At the time of grafting, the base soil of the rootstock is cleaned to expose the rhizosphere. The pruning shears are used to cut the rootstock into a mallet-shaped slope from the ground. 2, cut the ear: choose elm tree or excellent clones