Quick breeding method of ornamental dragon jujube stock

Abstract

The invention relates to a stock quick breeding technology, in particular to a quick breeding method of an ornamental dragon jujube stock, aiming to solve the problems of lower survival rate, lower growth speed, and the like after a dragon jujube seedling grafted by using a wild jujube stock is planted. The method comprises the following steps of: selecting a vigorously growing jujube tree root seedling of two years or longer than two years as a stock, carrying out top grafting on dragon jujube scions at all cut notches of a secondary branch of the root tiller seedling by using an improved grafting method, wherein when the length of a scion terminal bud reaches 2cm, the bud tiller of a grafting port is subjected to pinching by retaining 2-4 sections, and when the length of the scion bud terminal bud reaches 2cm, the length of the bud tiller is shorter than 2 sections; and when the length of the bud tiller of the grafting port reaches 2 sections, carrying out pinching on the bud tiller by retaining two sections. In the invention, the vigorous ordinary jujube stock is used for carrying out top grafting on the dragon jujube stock, the seedling breeding speed of a dragon jujube commodity is shortened from 4 years to 2 years; meanwhile, the defects of low fruit bearing rate, small fruit and poor dietary performance of dragon jujubes are overcome; and the ornamental performance and the dietary performance of the dragon jujubes are improved.

Description

technical field [0001] The invention relates to a technology for quickly growing seedlings, in particular to a method for quickly growing ornamental jujube seedlings. Background technique [0002] The branches, secondary branches and jujube hangings of dragon jujube all bend and twist to grow. The branch shapes are peculiar. Some bend forward, and some turn left and right. The rare tree species for greening and landscaping are in short supply in the market. At present, jujube seedlings are bred to be grafted using jujube jujube as rootstock. Due to the weak potential of the jujube tree, the survival rate of jujube seedlings grafted with jujube rootstock is low after planting, and the growth rate is very slow. It usually takes 4 years to grow. At the same time, due to the bent branches, the uprightness of the seedlings is poor. Measures such as setting stems, shaping, supporting, and binding can reach the standard of commercial seedlings with a tree height of 1-1.2m and a c...

AI Technical Summary

Problems solved by technology

[0003] The invention solves the problems of low survival rate, slow growth rate, long cultivation time, high input of manpower and material resources, low land utilization rate and poor economic benefit of jujube jujube seedlings grafted with jujube rootstock, and provides an ornamental jujube jujube Rapid growth method of seedlings