A three-stage "hanging method" rapid propagation method of apple dwarf self-rooted seedlings

Abstract

The invention discloses an efficient rapid propagation method for neat apple dwarf scion-root seedlings. The method comprises a double-tongue grafting process of a first-stage basal stock and a second-stage dwarf stock, a process for layering and hilling operation and management, a process for grafting of the second-stage dwarf stock and a third-stage variety and management, a process of management of dwarf scion-root seedlings, and harvesting. With the rapid propagation method for apple dwarf scion-root seedlings through a three-stage wire tying process, after two-year cultivation, 5500-6000apple dwarf scion-root seedlings with good root systems, neat growth, a basal part thickness of 0.5-0.8 cm, a plant height up to 1.2-1.5 m and 3-5 branches can be obtained in every mu of land. The method greatly shortens the propagation years of the apple dwarf scion-root seedlings, and overcomes the defects that daughter ramets grow irregularly and the grafting time is not uniform after dwarf scion-root seedlings are subjected to layering.

Description

technical field [0001] [The present invention belongs to the field of propagation of apple seedlings, and is a method for rapid propagation of dwarfed self-rooted apple seedlings using the three-stage 'hanging method' technique. [0002] technical background [0003] [Apple is a perennial woody plant, and its seedling raising method directly affects the quality, quantity and propagation speed of apple seedlings. The main method of apple seedling breeding is grafting and propagation, and the rootstocks include arborization rootstocks, dwarfing intermediate rootstocks and dwarfing rootstocks. Among them, arborization rootstocks are mostly sown with seeds such as crabapple, and the seedlings are grafted after the seedlings grow to a certain extent. The method of this seedling grafting, because most of seeds are hybrids, causes the growth of seedlings to be uneven, and the quality is generally not high, moreover what produces is arbor root fruit trees. At present, 90% of my cou...

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Problems solved by technology

[0007] The purpose of the present invention is to adopt the three-stage "hanging method" to rapidly propagate dwarfed self-rooted apple seedlings, shorten the breeding period of dwarfed self-rooted apple seedlings, and overcome the uneven growth, difficulty in rooting and grafting time of daughter plants propagated by layering of dwarfed rootstocks The defect of non-uniformity reduces the price of self-root stock seedlings, thereby accelerating the popularization and application of apple dwarf self-root stock seedlings, and rapidly promoting the construction of modern orchards with short stock and dense planting in my country

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