Dwarfing early-production domestication method of fine-fragrance walnuts

Abstract

The invention discloses a dwarfing early-production domestication method of fine-fragrance walnuts. The method comprises the following steps: 1) young trees: A, carrying out grafting to control growthof trees; B, selecting buds to control the growth quantity and direction of branches; and C, carrying out shaping to control the tree shape; and 2) adult trees: A, carrying out pruning and shaping tocontrol the tree shape; and B, carrying out girdling to promote the fine-fragrance trees to enter a reproductive growth period in advance. According to the method, tree growth is controlled through removing branches in the young tree period, the growth quantity and direction of the branches are controlled through bud selection, and the tree shape is controlled through shaping, so that the young trees are rapidly formed, distribution of the branches is reasonable, ventilation and light transmission are good, dwarfing is effectively realized, and meanwhile, conditions are provided for high yield of adult trees. Then, the tree shape is sequentially controlled through pruning and shaping in the adult tree period, and the fine-fragrance walnut trees are promoted to enter the reproductive growth period in advance through girdling and the like according to actual conditions, so that fruit setting is achieved in advance, quality is ensured, and the yield is increased.

Description

technical field

[0001] The invention belongs to the technical field of domestication of walnut trees, and in particular relates to a dwarf and premature domestication method of fine fragrant walnuts. Background technique

[0002] Xixiang walnut is one of the important high-quality walnut strains in Yunnan Province. It is distributed in a large range of altitude (1400-2200m) and has excellent quality (full kernels, easy to harvest kernels, and whole kernels are preferred, with a kernel yield as high as 56%; strong flavor , with a fat content of 71.9%), is the main walnut strain traditionally cultivated in Yunnan Province, and is mainly planted in Baoshan, Dehong and other places in Yunnan Province. The fine fragrant walnut tree has a strong momentum, a half-open tree posture, and a semi-spherical crown. The Xixiang walnut tree is tall, with a medium and short branch rate of 96.9%, and the fruit branches are short branches. In the past, people didn’t know enough about walnut...

Examples

Embodiment 1

[0040] A method for acclimating dwarf and premature birth of fine fragrant walnut, comprising the following steps:

[0041] 1) Young trees:

[0042] A. Butcher branches: control the growth of trees by butchering branches, specifically, when the saplings of the fragrant walnut grow to 1.5m, butcher the tip at 1.2m;

[0043] B. Bud picking: Control the growth quantity and direction of branches by picking buds. Specifically, in the second year, redundant tree buds are removed, and 3 buds are left. The best buds are located in the sunny direction. As the main branch bud; the distance between the three buds is 25cm, and they form an angle of 120° with each other, the base angle of the three buds is 60°, the waist angle is 70°, and the tip angle is 55°;

[0044] C. Shaping: Control the shape of the tree through shaping. Specifically, in the third year, the amount of branches is controlled according to the terrain. Prune the main buds left in step B and leave 3 side buds, and remove...

Embodiment 2

[0050] A method for acclimating dwarf and premature birth of fine fragrant walnut, comprising the following steps:

[0051] 1) Young trees:

[0052] A. Butcher branches: control the growth of trees by butchering branches, specifically, when the young walnut trees grow to 1.4m, butcher the tip at 1.15m;

[0053]B. Picking buds: Control the number and direction of branch growth by picking buds. Specifically, in the second year, excess tree buds will be removed, and 3 buds will be left. The best buds are located in the sunny direction, and the 3 buds are ringed into 360° as Main branch bud; the distance between the three described buds is 20cm, forming an angle of 110-130° between each other, the base angle of the three buds is 60°, the waist angle is 70°, and the tip angle is 55°;

[0054] C. Shaping: Control the shape of the tree through shaping. Specifically, in the third year, the amount of branches is controlled according to the terrain. Prune the main buds left in step B a...

Embodiment 3

[0060] A method for acclimating dwarf and premature birth of fine fragrant walnut, comprising the following steps:

[0061] 1) Young trees:

[0062] A. Butcher branches: control the growth of trees by butchering branches, specifically, when the young walnut trees grow to 1.6m, butcher the tip at 1.25m;

[0063] B. Bud picking: Control the growth quantity and direction of branches by picking buds. Specifically, remove redundant tree buds in the second year and leave 3 buds. The best buds are located in the sunny direction. When the buds are not good, keep 4 buds, all of which are used as the main buds; the distance between the 3 buds is 30cm, and they form an angle of 110-130° between each other, and the base angle of the 3 buds is 65°. Angle 80°, tip angle 65°;

[0064] C. Shaping: Control the shape of the tree through shaping. Specifically, in the third year, the amount of branches is controlled according to the terrain. Prune the main buds left in step B and leave 3 side b...

technical field

[0001] The invention belongs to the technical field of domestication of walnut trees, and in particular relates to a dwarf and premature domestication method of fine fragrant walnuts. Background technique

[0002] Xixiang walnut is one of the important high-quality walnut strains in Yunnan Province. It is distributed in a large range of altitude (1400-2200m) and has excellent quality (full kernels, easy to harvest kernels, and whole kernels are preferred, with a kernel yield as high as 56%; strong flavor , with a fat content of 71.9%), is the main walnut strain traditionally cultivated in Yunnan Province, and is mainly planted in Baoshan, Dehong and other places in Yunnan Province. The fine fragrant walnut tree has a strong momentum, a half-open tree posture, and a semi-spherical crown. The Xixiang walnut tree is tall, with a medium and short branch rate of 96.9%, and the fruit branches are short branches. In the past, people didn’t know enough about walnut...

Examples

Embodiment 1

[0040] A method for acclimating dwarf and premature birth of fine fragrant walnut, comprising the following steps:

[0041] 1) Young trees:

[0042] A. Butcher branches: control the growth of trees by butchering branches, specifically, when the saplings of the fragrant walnut grow to 1.5m, butcher the tip at 1.2m;

[0043] B. Bud picking: Control the growth quantity and direction of branches by picking buds. Specifically, in the second year, redundant tree buds are removed, and 3 buds are left. The best buds are located in the sunny direction. As the main branch bud; the distance between the three buds is 25cm, and they form an angle of 120° with each other, the base angle of the three buds is 60°, the waist angle is 70°, and the tip angle is 55°;

[0044] C. Shaping: Control the shape of the tree through shaping. Specifically, in the third year, the amount of branches is controlled according to the terrain. Prune the main buds left in step B and leave 3 side buds, and remove...

Embodiment 2

[0050] A method for acclimating dwarf and premature birth of fine fragrant walnut, comprising the following steps:

[0051] 1) Young trees:

[0052] A. Butcher branches: control the growth of trees by butchering branches, specifically, when the young walnut trees grow to 1.4m, butcher the tip at 1.15m;

[0053]B. Picking buds: Control the number and direction of branch growth by picking buds. Specifically, in the second year, excess tree buds will be removed, and 3 buds will be left. The best buds are located in the sunny direction, and the 3 buds are ringed into 360° as Main branch bud; the distance between the three described buds is 20cm, forming an angle of 110-130° between each other, the base angle of the three buds is 60°, the waist angle is 70°, and the tip angle is 55°;

[0054] C. Shaping: Control the shape of the tree through shaping. Specifically, in the third year, the amount of branches is controlled according to the terrain. Prune the main buds left in step B a...

Embodiment 3

[0060] A method for acclimating dwarf and premature birth of fine fragrant walnut, comprising the following steps:

[0061] 1) Young trees:

[0062] A. Butcher branches: control the growth of trees by butchering branches, specifically, when the young walnut trees grow to 1.6m, butcher the tip at 1.25m;

[0063] B. Bud picking: Control the growth quantity and direction of branches by picking buds. Specifically, remove redundant tree buds in the second year and leave 3 buds. The best buds are located in the sunny direction. When the buds are not good, keep 4 buds, all of which are used as the main buds; the distance between the 3 buds is 30cm, and they form an angle of 110-130° between each other, and the base angle of the 3 buds is 65°. Angle 80°, tip angle 65°;

[0064] C. Shaping: Control the shape of the tree through shaping. Specifically, in the third year, the amount of branches is controlled according to the terrain. Prune the main buds left in step B and leave 3 side b...

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