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高接换种、改劣换优对提高现有经济林木的产量和品质,改造和利用野生资源具有重要的意义。但生产上大面积应用时还存在一些问题:一是不良的气候条件往往影响成活率;二是费工费料,多头高接需要接很多头,成活后每一个嫁接头要用1米多长的支棍1—2根,固定新梢,用工用料比嫁接时要大。即便如此,每年总有大量嫁接头被风折断,因此,很多地方嫁接成活率虽然不低,但保存率不高,反而毁坏了砧木,影响高接换种工作的推广。几年来,我们主要以板栗为材料,对嫁接技术进行了革新,采用蜡封接穗和多头腹接
It is of great significance to improve the yield and quality of the existing economic forest, and to transform and utilize the wild resources by adopting the methods of high exchange, change and merging. However, the production of large area applications there are still some problems: First, adverse climatic conditions often affect the survival rate; second is the cost of labor, long high pick need to pick a lot of head, after the survival of each graft to use more than 1 m long 1-2 sticks, fixed shoots, labor-intensive materials than when the larger. Even so, there are always a large number of grafting heads broken off by the wind each year. Therefore, the survival rate of grafting in many places is not low, but the preservation rate is not high. Instead, rootstocks are destroyed, affecting the promotion of high-quality replacement work. In recent years, we mainly chestnut as a material, the grafting technology has been innovative, using wax seal scion and multiple heads