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Top-grafting crown-changing method for walnut tree in full fruiting period

A technology for high-replacement head and walnut tree, which is applied in horticultural methods, botanical equipment and methods, and grafting, etc., can solve problems such as poor application effect, weak growth of grafted trees, death, etc., so as to improve the success rate of grafting and promote the Robust growth, volume reduction effect

Inactive Publication Date: 2017-05-31
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of this method is that the head can be replaced quickly and completely, and the crown can be restored within 2-3 years. The application effect is not good for fruit trees and older trees. When these trees are grafted with this method, the grafted trees grow weak and even die.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: the place is a test field with medium soil fertility in Nanwang Village, Baixiang Town, Baixiang Town, Qinyang City, Jiaozuo City, Henan Province, China. The walnut trees to be reconnected are 45 15-year-old walnut trees with good tree structure and trunk No more than 1.5 meters, use the following methods to reconnect:

[0021] Step 1. In the autumn of the first year, that is, from September to October, after the fruit is harvested, dig a circular ditch 40 cm wide and 60 cm deep at a distance of 1.5 meters from the trunk of the large walnut tree that needs to be replanted. All the walnut tree roots were cut off and the wound was flattened, and then 50 kg of high-quality organic fertilizer, 0.5 kg of urea, 1.0 kg of potassium sulfate, and 2 kg of superphosphate were mixed with the soil, filled in the ditch, watered thoroughly, and finally covered with plastic film. Ditch and tree cover;

[0022] Step 2. Before March of the second year (as of the last day o...

Embodiment 2

[0028] Embodiment 2: The place is located in Shangyang Village, Chengguan Town, Xin'an County, Luoyang City, Henan Province, China. This plot is dry and hilly land, and the soil fertility is poor. The walnut trees to be reconnected are 89 18-year-old walnut trees. Mainly planting crops, resulting in high trunks (basically more than 2 meters), poor tree structure, closed orchards, few fruits, poor quality, and difficult fruit picking. The following methods are used for grafting:

[0029] Step 1. In the autumn of the first year, that is, from September to October, after the fruit is harvested, dig a circular ditch 40 cm wide and 60 cm deep at a distance of 1.5 meters from the trunk of the large walnut tree that needs to be replanted. All the walnut tree roots were cut off and the wound was flattened, and then 50 kg of high-quality organic fertilizer, 0.5 kg of urea, 1.0 kg of potassium sulfate, and 2 kg of superphosphate were mixed with the soil, filled in the ditch, watered thor...

Embodiment 3

[0036] Example 3: The site is located in Linshu Village, Baitu Town, Luanchuan County, Luoyang City, Henan Province, China. This orchard belongs to a mountain orchard with thin soil layers and difficult fertilization. The tree age is mainly 20 years old. The tree structure is good, but the fruit quality is poor And yield is low, selects 35 walnut trees wherein to adopt the grafting method described in embodiment 1 to carry out grafting again, investigation result: the walnut tree of grafting all survives, and promptly survival rate is 100%, scion grows strong and strong, and grafting forms flower bud that year, The next year it will bloom and bear fruit, and the tree crown will basically return to its original size in another year.

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Abstract

The invention relates to a top-grafting crown-changing method for a walnut tree in the full fruiting period. The top-grafting crown-changing method comprises the following steps: after fruits are harvested, trimming the root system of the walnut tree of which the crown is required to be changed; before germination in the second layer, removing branches of the walnut tree of which the crown is required to be changed; after germination in the second layer, in the growth period of new shoots, selectively retaining and cultivating a main branch according to the tree shape to be adopted, and retaining a plurality of branches as auxiliary branches; before or after germination of the walnut tree in the third layer, grafting a scion onto the selectively remained and cultivated main branch, and removing an auxiliary branch growing most prosperously; during summer management in the third layer, retaining all branches germinating on the scion and preventing the branches from being blown apart by wind, and inhibiting growth of the auxiliary branches; during winter management in the third layer, removing all the auxiliary branches, and trimming and managing the branches germinating on the scion according to backbone branches to finish top-grafting crown-changing treatment to the walnut tree in the full fruiting period. By the top-grafting crown-changing method, for a big tree in the full fruiting period, especially a tree, growing in a relatively poor soil condition, in the full fruiting period, and a tree with the tree age being 15 years or longer, the grafting survival rate reaches 100%, and the grafted tree grows healthily and strongly.

Description

technical field [0001] The invention relates to the field of fruit tree grafting methods, in particular to a method for high-grafting and head replacement of walnut trees in the full-fruit stage. Background technique [0002] At present, the method generally used for high-grafting of walnuts is to remove all the crowns of the trees 10 days before grafting, and then graft them with skin-cutting or tongue-grafting or other methods, and only keep the germinated branches and leaves on the scion during summer management The branches and leaves that germinated on the rootstock (old tree) are all removed. The advantage of this method is that the head can be replaced quickly and completely, and the crown can be restored within 2-3 years. The application effect is not good for fruit trees and older trees. When these trees are grafted with this method, the growth of the grafted trees is weak, or even dies. Contents of the invention [0003] The purpose of the present invention is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G17/00A01G7/06A01G1/06
CPCA01G2/30A01G7/06A01G17/005
Inventor 李学强李秀珍姬延伟刘萱毛永明
Owner HENAN UNIV OF SCI & TECH
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