Rapid cultivation method of dwarfed nursery stock of pear tree

Abstract

The invention discloses a rapid cultivation method of the dwarfed nursery stock of a pear tree, which comprises the following steps: (1) cultivating base stock seedlings in the first year, and acquiring dwarfed inter stock scions and dwarfed pear tree variety scions after leaves fall in winter, wherein, the length of the dwarfed inter stock scions is 15-20cm, and the length of the dwarfed pear tree variety scions is about 4-6cm; and storing the scions in a cold storage house, and closely burying the scions with wet sand for later use; (2) grafting the dwarfed inter stock scions in step (1) by a cleft grafting method in spring of the next year; and (3) after the grafting joint in step (2) is healed, grafting the dwarfed pear tree variety scions in step (1) by a cleft grafting or side grafting method. The rapid cultivation method can complete pear dwarfed seedling cultivation within 2 years while the pear dwarfed seedling cultivation can be completed within 3 years by a conventional method, good joint healing and high lignification degree of the tree stock can be realized, and the purposes of grafting and seedling of the dwarfed tree inter stock can be achieved at the same year, therefore, the dwarfed close planting and cultivation technology of the pear tree can be demonstrated and popularized in a large scale in China.

Description

technical field [0001] The invention relates to the technical field of pear tree seedling cultivation, in particular to a rapid cultivation method for pear tree dwarf seedling stock. Background technique [0002] The dwarfing and dense planting of pear trees is still a new cultivation mode in China, and there is no large-scale promotion and application. The main reason why this advanced cultivation mode is difficult to promote is the long seedling cycle and high cost. The existing pear tree dwarfing middle stock seedlings have a long cycle, and usually it takes 3 years to emerge from the nursery. That is, the first spring sows the base stock seedlings (mostly Du pears). In the spring of the second year, cut the anvil, untie it, strengthen management throughout the year, cultivate the middle stock seedlings, and graft the buds of the variety on the middle stock in August; And other measures to cultivate dwarf intermediate stock finished seedlings. If you add the preparation...

AI Technical Summary

Problems solved by technology

[0002] Dwarfing and dense planting of pear trees is still a new cultivation mode in China, and there is no large-scale promotion and application. The main reason why this advanced cultivation mode is difficult to promote is the long seedling cycle and high cost.

The existing pear dwarf middle stock seedlings have a long period of cultivation, and usually it takes 3 years to emerge from the nursery, that is, the first spring sows the base stock seedlings (mostly Du pears), and under the condition of good growth, the middle stock is bud-grafted in August. In the spring of the second year, cut the anvil, untie it, strengthen management throughout the year, cultivate the middle stock seedlings, and graft the buds of the variety on the middle stock in August; and other measures to cultivate dwarf intermediate stock finished seedlings