Method for grafting walnut seedling

Abstract

The invention relates to a method for grafting the walnut seedling. The grafting of seedling adopts a bud-bark grafting; a bud 20 cm far away from the ground on the tree stock of the seedling is selected as a grafting position; above the grafted bud, 2 or 3 leaves are retained and snipped; below the grafted bud, all leaves are removed; both sides of the bud at the grafting position on the tree stock of the seedling are longitudinally cut once respectively and the cuttings are deep enough to reach the woodbase; the positions with 0.5 cm above and below the bud are transversely cut once respectively; the transverse incisions are inside the longitudinal incisions and deep enough to reach the woodbase; the bud on the tree stock is then taken; a plump bud on a scion is selected as a scion bud; both sides of the scion bud are longitudinally cut once respectively and the cuttings are deep enough to each the woodbase and take down the scion bud with a growing point; the scion bud is aligned with the bud on the tree stock and the bark of the scion bud is stuck to the woodbase of the tree stock; and a plastic strip is used for binding the scion bud from top to bottom and the bud is exposed all the time, thereby finishing the grafting. With the method for grafting the walnut seedling provided by the invention, the survival rate of the grafted seedling is high and the quality of the nursery stock is good. In addition, the method is simple and convenient to operate, has high reproduction speed and low cost and short seedling culture period and saves labor and materials.

Description

technical field [0001] The invention relates to a plant grafting method, in particular to a method for grafting walnut seedlings. Background technique [0002] Walnut grafting is the most difficult technical problem in the cultivation of walnut grafted seedlings. The technique of walnut grafting and propagation has not been ideally solved, and the survival rate is low and unstable. The main results of current research include hard branch grafting, seedling grafting, and micro branch grafting. These three methods are all indoor grafting. There are two methods of outdoor grafting: nursery grafting and outdoor budding. [0003] Hardwood grafting originated in the early 1970s. Shandong Provincial Institute of Fruit Research, Liaoning Provincial Research Institute of Economic Forestry and Beijing Forestry Research Institute of Fruit Trees and other units conducted indoor grafting experiments on the basis of foreign experience and achieved success. That is to use greenhouse plus...

AI Technical Summary

Problems solved by technology

These methods have a long period of seedling cultivation, and are all grafted on rootstocks that have grown for more than one year, and the survival rate is unstable.