High-efficiency grafting method for torreya grandis

Abstract

The invention belongs to the technical field of forestry planting, and specifically discloses a high-efficiency grafting method for torreya grandis. The method comprises the following steps: (1) performing preparation: selecting seedlings of 2-3-year-old torreya grandis at late February to late March, and cutting off parts located 5-10 cm above rhizomes of the seedlings of the torreya grandis to obtain a rootstock; and cutting 1-1.5-year-old tender branches from an excellent-quality mother tree as scions, wherein a length of each scion is 6-10 cm; (2) treating the rootstock: performing vertically-downward chopping from the middle part of a cross section of the rootstock by using a cleft grafting knife, wherein a length of a chopped opening is 4-5 cm; (3) treating the scions: reserving 6-8leaves of the top of each scion, removing the rest, and cutting the lower part of each scion into a wedge shape; (4) binding up the scions: inserting the scions into the chopped openings of the rootstock, fastening the scions and the rootstock by using a clamping binding device, and performing winding by using a film; and (5) performing management after grafting: performing fertilization on grafted seedlings every 3-4 days, applying a long-acting insecticide and bactericide, and building a sunshade shed with light transmittance of 20%-30%. The method disclosed by the invention has high efficiency of grafting, and the grafted torreya grandis has a higher survival rate.

Description

technical field [0001] The invention belongs to the technical field of forestry planting, and in particular relates to a high-efficiency grafting method of Chinese torreya. Background technique [0002] Torreya torreya, also known as Chinese torreya, is an evergreen tree belonging to Taxaceae, Taxaceae, and Torreya genus. It is a native tree species in China and a rare economic tree species in the world. It mainly grows in relatively humid areas in southern China and is born at an altitude of 1400 meters. Below, warm and rainy, yellow soil, red soil, yellow brown soil area. Torreya can reach a height of 25m. It is a kind of Torreya tree, usually obtained by grafting. Torreya torreya grows and matures for three years: it blooms in the first year, bears fruit in the second year, and matures in the third year. The fruit of Torreya torreya is a nut with high nutritional value. The dried fruit is called "torreya", which is a famous dried fruit. It is olive-shaped and has a hard...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for high-efficiency grafting of Torreya torreya to solve the problem of low grafting efficiency of Torreya torreya

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