Chimonanthus praecox twig grafting method

Abstract

The invention provides a chimonanthus praecox twig grafting method. The chimonanthus praecox twig grafting method comprises the steps that in June to August in summer, a to-be-improved chimonanthus praecox seedling is selected as a stock, and a semiligneous twig of chimonanthus praecox of an excellent variety is selected as a scion; during grafting, the scion is cut into a stem segment with the length of 8-14 cm, annual or current-year twigs on the scion and the stock are cut to form sections with the length of 5-10 cm and the width of 0.5 cm, the sections are uniform in size, when the sections are cut, the phloem is uniformly cut away, xylem is slightly exposed, and the phloem of the two sections is aligned, then tightly attached, and tightly wrapped with plastic cloth from bottom to top,wherein when the scion is a top shoot, the top is exposed 3-4 cm; when the scion is a middle stem segment, 1-2 opposite buds on the upper portion of the scion are exposed. The method is used for improving a grafting high and changing head variety in summer. According to the chimonanthus praecox twig grafting method, the semiligneous twigs generated in the cutting-back process in summer are utilized, the healing surface of the stock and the scion is large, the wind-breakage resistance is high, and the chimonanthus praecox grafting survival rate and preservation rate are greatly improved.

Description

technical field [0001] The invention relates to the field of tree propagation, in particular to a method for grafting wintersweet twigs. Background technique [0002] Common methods of propagation of wintersweet are grafting and branching. For ramet propagation, a mother tree can only be divided into 2-3 daughter plants, which takes two to three years to complete. The reproduction cycle is long and the reproduction coefficient is low. Grafting propagation is divided into branch grafting and bud grafting. In the practice of wintersweet production, the grafting method is more common. [0003] In traditional grafting, the grafting time is spring, the rootstock is 1-year-old or perennial wintersweet seedlings, and the scion is 1-year-old fully lignified wintersweet hard branches. The grafting methods mostly use splitting and cutting. The grafting time of hard branches can only be around March in spring, and only about one month for grafting. It is difficult to survive too earl...

AI Technical Summary

Problems solved by technology

Both splitting and cutting need to cut the rootstock first, which destroys more tissues of the rootstock, which is not good for the survival of the graft; therefore, the traditional grafting methods such as splitting and cutting do not heal well, the rootstock is drained and dies, and the seedlings are wind-broken and dead. Low seedling preservation rate

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