Method for growing annual multi-branch dwarf self-rooted rootstock apple seedlings

Abstract

The invention relates to a method for growing annual multi-branch dwarf self-rooted rootstock apple seedlings. The method includes planting dwarf self-rooted rootstock seedlings in the spring of a first year; grafting apple varieties on the seedlings in August; disallowing the apple varieties to sprout in the current year; pruning rootstock of the self-rooted rootstock seedlings in the spring of a second year; allowing the varieties to sprout; growing the annual multi-branch dwarf self-rooted rootstock apple seedlings by the aid of a branch promoting technology. The method has the advantages that the problem of poor quality of dwarf self-rooted rootstock apple seedlings which grow by the aid of the traditional method can be solved; the annual multi-branch dwarf self-rooted rootstock apple seedlings which grow by the aid of the method can be planted to fields in the current year, can flower in the current year and can bear fruits, yields can be generated in the second year, high yields can be generated in a third year, the problem of late fruit bearing of single-branch apple seedlings can be solved, orchard construction speeds are high, and the method is particularly applicable to meeting large apple seedling demand of apple dwarf rootstock intensive cultivation modes, and is an effective way for particularly solving problems of difficulty in flower formation and late fruit bearing of Fuji apples at present.

Description

technical field [0001] The invention relates to a method for cultivating annual multi-branch dwarf self-root stock apple seedlings. Background technique [0002] European countries (Netherlands, France, Italy) dwarf self-root stock apple seedling breeding, adopt knip (short cut) technology, mostly cultivate 2-year-old multi-branch dwarf self-root stock apple seedlings. In the first year, after the dwarfed root stock seedlings are picked back, the apple varieties are grafted (tongue-grafted) indoors in spring. After healing, they are transplanted to the field nursery with a row spacing of 0.9 × 0.33 meters from March to April. It can grow to 1.2-1.5 meters in the same year, but it does not go out of the nursery. In the early spring of the second year, it is cut short (Knip) at a distance of 0.7-0.8 meters from the ground, and the cut buds are kept for growth. In the first year of this technology, indoor in vitro grafting adopts branch grafting technology, which is technical...

AI Technical Summary

Problems solved by technology

The main reason is that Shaanxi has a large area of ​​apples, and the area of ​​intensive high-effect gardens with short anvils is small, and the speed of technology demonstration and promotion cannot keep up with the speed of increase in apple area