Bud grafting method of precocity thin-skin walnut

Abstract

The invention provides a bud grafting method of a precocity thin-skin walnut. The bud grafting method of the precocity thin-skin walnut comprises the following steps of (1) selecting a cut stem of a walnut seedling tree, and culturing 1-2 strong buds in the different directions for standby application after germination; (2) carrying out scion collection and preservation, wherein a developmental branch of the precocity thin-skin walnut is collected to serve as a scion in June or July of the current year, compound leaves and shoots need to be timely removed after the scion is picked, and a 1-2cm petiole is retained; (3) forming a grafting opening, wherein a rootstock notch is formed in the straight smooth portion of the lower half portion of a rootstock branch; (4) obtaining a bud tuber, wherein a bud tuber notch is formed in a full bud which is arranged on the lower half portion of the scion; (5) carrying out grafting, wherein the scion is embedded into the rootstock notch, and the bud tuber notch can be closely connected with the rootstock notch; (6) carrying out sealing on a connector, wherein a plastic strip is used for being tightly wound on the grafting portion from bottom to top, and the buds are exposed. The bud grafting method of the precocity thin-skin walnut can greatly short the breeding cycle, and improves correctness of variety breeding and breeding efficiency.

Description

technical field [0001] The invention relates to a method for grafting walnuts, in particular to a method for budding early-fruited thin-skinned walnuts. Background technique [0002] Walnut is an important cultivated economic tree species in my country. It has high economic value and nutritional value, and has high medical and health effects. The supply of dried fruit or walnut processed products is in short supply. , its trunk, roots, branches and leaves also have certain utilization value. Among them, the early fruit thin-skinned walnuts begin to bear fruit 2-3 years after planting, enter the full fruit period in 4-5 years, and after entering the full fruit period in the fifth year, the yield per mu can reach more than 250kg, which has the characteristics of high economic benefits. It is very popular with fruit growers; however, in production practice, it is found that early-fruiting thin-skinned walnut varieties have problems such as difficulty in cutting and rooting, low...

AI Technical Summary

Problems solved by technology

Among them, the early fruit thin-skinned walnuts begin to bear fruit 2-3 years after planting, enter the full fruit period in 4-5 years, and after entering the full fruit period in the fifth year, the yield per mu can reach more than 250kg, which has the characteristics of high economic benefits. It is very popular with fruit farmers; however, in production practice, it is found that early-fruiting thin-skinned walnut varieties have problems such as difficulty in cutting and rooting, low survival rate of grafting, scarcity of scions, and large gaps in seedlings in the market.