Inversed bark cutting side grafting method for crown changing of big walnut trees

A technology of upside-down cutting bark and big trees, applied in grafting, horticultural methods, botanical equipment and methods, etc., can solve the problems of water filling and low survival rate of grafting, achieve small rootstock wounds, facilitate flower bud differentiation, and inhibit tree body The effect of vegetative growth

Inactive Publication Date: 2020-12-15
河池市林业科学研究院
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] The invention provides a method for grafting the belly of a walnut tree with inverted skin for crown replacement, which is

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  • Inversed bark cutting side grafting method for crown changing of big walnut trees

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[0038]Example 1

[0039]Select 20 rootstocks with a diameter of 6cm to 25cm and a tree age of 4-20 years, and graft the new ears of good varieties on the trunk of each tree or the smooth part of the larger branches according to the following steps.

[0040]First saw a groove with a length of 5-8cm and a depth of 2-3mm in the xylem. Remove the bark of 2cm*2cm below the middle part of the transverse ditch; make a vertical slit above the middle part of the transverse ditch to reach the xylem. Use a knife to pry the phloem and xylem in the transverse ditch and longitudinal incision to separate them.

[0041]Cut the scion; choose a spear with a diameter of 1.0-2.0cm and a length of 15-25cm with full buds and fully lignified. Keep 2-5 buds. Cut them into a horse ear shape with a sharp knife. Cut the back two edges until white.

[0042]Cuttings; Use the cut scion to pry the phloem from the longitudinal cut and insert it from bottom to top, so that the cut surface of the cuttings and the rootstock camb...

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Abstract

The invention discloses an inversed bark cutting side grafting method for crown changing of big walnut trees. The method comprises the following steps of (1) selecting a plurality of grafting points at the position 0.5-1.5 m away from the ground on a stock trunk or a relatively large branch smooth part, and grafting improved variety scions at each grafting point by adopting the inversed bark cutting side grafting method; (2) inserting a cut scion into the phloem which is longitudinally cut and pried from bottom to top, so that the cut surface of the scion is tightly attached to the stock cambium; (3) wrapping a notch with a grafting film from top to bottom, fixing the scion on the stock, and binding a grafting union and the top end of the scion without the grafting film; obliquely sawing aditch reaching xylem by using a hand saw at the cuttingwood tip by 3-5 cm upwards; and (4) after grafting, timely performing post-grafting management and protection. According to the method, the stock does not need to be sawn dry and drained, graft union healing time is effectively shortened, graft union water accumulation is avoided, and the walnut grafting survival rate in the area of the HechiGuangxi can be increased.

Description

technical field [0001] The invention belongs to the technical field of walnut planting, in particular to a method for grafting the belly of a walnut tree with inverted skin for crown replacement. Background technique [0002] Walnut, a Juglandaceae plant, is known as the world-renowned "four major dried fruits" together with almonds, cashew nuts, and hazelnuts. The cultivation of walnuts is limited by traditional cultivation methods and technical conditions. In history, walnuts were mainly cultivated with late-fruited walnut varieties, most of which were planted in mountainous areas, and mostly distributed in ditch and slope dry land. These late-fruited walnut trees have very strong growth adaptability. However, after planting, it generally takes about 8 to 15 years to bloom and bear fruit, and 15 to 20 years to enter the peak production period, resulting in the walnut production being unable to achieve a relatively large increase in the short term. At the same time, the hi...

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Application Information

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IPC IPC(8): A01G17/00A01G2/30A01G7/06
CPCA01G7/06A01G17/005A01G2/30
Inventor 卢长江韦丹谢代祖古恋
Owner 河池市林业科学研究院
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