Improving and variety changing method for advanced age pear tree

Abstract

The invention provides an improving and variety changing method for an advanced age pear tree. The method includes the following steps that, scions are collected and placed in a nutrient solution to be kept fresh for standby use, the scions are cut flat along smooth faces, and the opposite sides of the two ends of cut faces are cut into inclined faces; a stock is trimmed and grooved; the scions are grafted to main branches or lateral branches of the stock, bundled up through hemp ropes after being grafted and closed through micropore preservative films; conventional clipping management is carried out on the pear tree, stock branches affecting scion growth are removed during winter pruning of the first year, and wound branches of the last year are removed during later winter pruning; the micropore preservative films are broken during a budding period in early spring to expose bud holes, and germinal latent buds are removed in the early spring. According to the grafting method, the influence on scion grafting in the current year is small, the survival rate of the grafted branches is high, the single bud grafting amount is large, and a great deal of manual work can be saved; the grafting method does not affect the pear yield in the next year, and the yield is increased by 31.2% compared with a traditional grafting method.

Description

technical field [0001] The invention belongs to the technical field of fruit tree grafting, in particular to a method for grafting and replanting old pear trees. Background technique [0002] Pear is one of the important fruit trees that are generally cultivated in the north and south of my country, and it is cultivated all over the country. The fruit of pear contains a variety of nutrients. In addition to containing more than 80% of water, the sugar content is mostly more than 8%, and the soluble solid content of some varieties can reach more than 15%. Delicious, welcomed by consumers. Pear trees have strong adaptability to soil, and can grow and bear fruit regardless of mountains, hills, sandy deserts, depressions, saline-alkali lands, and red soils. In the pear areas in the north and south of China, there are many large trees that are 100-150 years old, and the branches and leaves are luxuriant. Some single plant yields can reach more than 1000-1500 kg. Pear trees have...

AI Technical Summary

Problems solved by technology

[0006] Due to the thick bark of old pear trees and few grafting parts, the conventional grafting method is cumbersome and time-consuming, especially when there are problems such as low yield and low benefit when the early improvement is changed.

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