A kind of single-row planting method for rapid propagation of apple dwarf self-root stock seedlings

Abstract

Disclosed is a method for rapidly breeding dwarf apple self-rooted rootstock seedlings in a single-row-planting mode. The method is applicable to continuous layering breeding for dwarf apple self-rooted rootstocks (MM106, M26 and M9), good strains T337 of the dwarf apple self-rooted rootstocks and the like. When a layering nursery needs to be built, according to the specifications of the self-rooted rootstock seedlings, the thickness of the position 10 cm above the rooting portion ranges from 6 mm to 8 mm, the height of the position 10 cm above the rooting portion ranges from 50 cm to 60 cm, the row spacing is 1.8 m, and the spacing in the same row is 20 cm; dwarf self-rooted rootstock mother plant planting is carried out after ridged field soil preparation or shallow gully soil preparation, the dwarf self-rooted rootstocks tilt northwards, the angle formed between the self-rooted rootstocks and the ground is 30 degrees, and the number of the self-rooted rootstocks planted per mu ranges from 1800 to 2000; the layering nursery can be built in two years, during the first year, the nursery stocks are planted in a tilted mode, and continuous layering forms mother plants after the middle of October; during the second year, buds on the mother plants germinate to form son plants, the son plants root through saw dust coverage and spray irrigation at regular intervals, and the dwarf self-rooted rootstock seedlings, namely the son plants, are harvested from November to December. The method is simple and efficient, the number of the dwarf self-rooted rootstock seedlings yield per mu in the second year can range from 18000 to 20000, the thicknesses of the dwarf self-rooted rootstock seedlings are uniform and range from 8 mm to 12 mm, the heights range from 70 cm to 100 cm, and the method is particularly suitable for grafting apple varieties and breeding the dwarf self-rooted rootstock apple seedlings.

Description

technical field [0001] The invention belongs to the field of apple dwarf rootstock propagation, and relates to a single-row planting method for rapid propagation of apple dwarf self-root stock seedlings. Background technique [0002] Intensive cultivation on dwarf stock is the development direction and trend of apple production in the world. Apple dwarfing middle stock cultivation is the main form of apple dwarfing cultivation in China, and it plays an important role in production. Dwarf self-rooted apple seedlings are not used for seeding in the whole process of breeding, and the individual differences in seedling growth are small and uniform. Developed apple production countries in the world (such as the United States, France, Italy, and the Netherlands) widely use dwarfed self-rooted apple seedlings. The establishment of an orchard means that the apples are dwarfed and cultivated from the root stock, and the proportion reaches more than 90%. The garden appearance is neat...

AI Technical Summary

Problems solved by technology

In my country, less than 1% of dwarfed self-rooted apple seedlings are built, and its biggest constraint is the lack of dwarfed self-rooted apple seedlings.

However, because the price of seedlings is as high as 80 yuan / plant, and the import of seedlings is restricted by national policies, the development speed is slow