Method for cultivating North America holly dwarf products through upper air layering

Abstract

The invention discloses a method for cultivating North America holly dwarf products through upper air layering. The method includes the following steps that in the growth and development period of North America holly fruits, a branch which is 20-60 cm in length and about 0.3-1.5 cm in diameter, grows vigorously, is free of plant diseases and pests, and has dense fruits is selected, the 5-10 cm position of the lower portion of the branch is girdled, the girdling width is controlled to range from 0.5 cm to 1.5 cm, a cambium is completely removed, the girdled position is coated with a root inducing agent mixed solution, then the girdled position is coated with a layering medium with the water content ranging from 60% to 80%, finally, the girdled position is wrapped by a plastic film, then an opening and a lower opening are tied, and wetness is kept. 60-70 days later, the medium is full of root systems, the rooting branch is cut off from the wrapping position of the medium, part of leaves are removed, then the rooting branch is transplanted in a culture medium with the ratio of peat to perlite of 3:1(V:V), the medium and the environment are kept wet, the branch is put in shade for seedling recovering for about 20 d, and the survival rate is 96.2% or above. The method has the advantages of being easy and convenient to operate, high in maneuverability, low in cost and high in survival rate, and is an important technical means for achieving dwarfing and miniaturization of North America holly products.

Description

technical field [0001] The invention belongs to the field of plant breeding, and relates to a method for dwarfing fruit ornamental plants, in particular to a method for dwarfing high-altitude layering of North American holly (Ilex verticillata). technical background [0002] North American holly (Ilex verticillata), also known as whorling holly and American holly, is a perennial deciduous shrub of the genus Ilex (Ilexlinn.), dioecious, with a tree height of 2-3 meters. At the end, the fruit color turns red in early October, and the leaves fall in early and mid-December; the natural fruit-hanging period is until April of the following year, and the fruit is bright red and shiny. It often enters the New Year's Eve flower market in the form of cut branches, potted plants and other horticultural products. This plant is also an excellent tree species for gardens and garden beautification, and can be planted alone, in rows or in groups. In addition, because of its strong water an...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of existing product forms and technologies, and provide a method for dwarfing North American holly by high-altitude layering and realizing product miniaturization. Inconvenient and other current situations can also solve the problem of short ornamental period of cut branches, and this method has the advantages of convenient operation, strong mobility, low cost and high survival rate, and is an important technical means to realize the miniaturization of North American holly products