Grafting method of walnut tough skin

Abstract

The invention relates to an improved variety grafting and seedling raising technology of walnuts, in particular to a walnut touch skin grafting method. The walnut touch skin grafting method comprises the following steps of selecting a seedling of which the seedling ground diameter is 1-2cm and the age is 1-2 years as a stock; performing grafting in a period from the initial stage of germinating of a bud of the stock to the time before leaf expansion; respectively cutting two sides of the lower end of a scion into a long cutting surface and a short cutting surface; cutting off a skin layer with the length of 1.0cm from the upper edge of the short cutting surface so as to expose a touch skin portion; removing wood of a cutting opening of the stock and reserving a skin layer of the stock; lifting up a skin layer with the width of 0.1-0.2cm from one side of the bottom of the cutting opening of the stock; downwards tearing off the skin layer by 3-5cm so that bleeding fluid in the cutting opening is drained from a tearing opening; aligning the long cutting surface of the scion to a forming layer of the stock; and wrapping the short cutting surface by using the skin layer of the stock and aligning the short cutting surface to the skin layer of the stock. By the grating method, a junction surface of the touch skin portion of the scion of the stock is expanded, healing of scion of the stock of a grafting opening is promoted, the problem that bleeding of walnuts affects a walnut grafting healing opening is solved, and the grafting survival rate of spring scion grafting walnuts and the growth increment of seedlings are improved effectively.

Description

technical field [0001] The invention relates to a technique for grafting and raising seedlings of improved walnut varieties, in particular to a method for grafting walnut tough bark. Background technique [0002] Walnut is one of the world's four major dry fruits, and it is listed as the world's four major dry fruits together with cashew nuts, hazelnuts, and almonds. It has a wide range of cultivation, almost all over the world, and enjoys the laudatory titles of "Long Live Son", "Longevity Fruit" and "Treasure for Nurturing People" in China. Because of its wide range of suitable growth, strong stress resistance, less pests and diseases, and nutritious nutritious properties, the market demand for improved seedlings and nuts is increasing. Therefore, solving the selection of fine walnut varieties and vegetative propagation technology is the key factor to accelerate the development of improved walnut varieties. In recent years, a more comprehensive study has been carried out...

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned technical problems, the purpose of the present invention is to provide a method for grafting walnut rootstocks, which solves the problems of poor growth of grafted seedlings, low survival rate and low rate of emergence from traditional walnut seedlings.

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