A method for regulating growth of crassen grape by double control

Abstract

This invention relates to the field of grape cultivation technology, and particularly to a method for dual-control regulation of Crimson grape growth, comprising the following steps: Step S1: Crimson grape grafting; Step S11: Preparing the Zhichang Anti-Growth Rootstock No. 1, Victoria Interplant, and Crimson scion; Step S12: Grafting is carried out in spring at 10-20℃ using cleft grafting; Step S13: After grafting, conventional field management methods are adopted; Step S2: Crimson grape grafted seedlings are planted and shaped. This invention utilizes a rootstock-interplant-scion grafting complex combined with trellis adjustments to induce drooping of new shoots to simultaneously regulate the growth of Crimson grapes. This enhances the stress resistance of Crimson grapes, promotes nutrient production, reduces nutrient waste, improves nutrient conversion and utilization efficiency, and lowers labor costs. It can reduce workload, lower labor costs, improve nutrient utilization efficiency, and increase economic benefits.

Description

Technical Field

[0001] This invention relates to the field of grape cultivation technology, and in particular to a method for dual-control regulation of Crimson grape growth. Background Technology

[0002] Crimson Seedless grapes, also known as Scarlet Seedless or Crimson Seedless grapes, are bright red, turning purplish-red when fully ripe. Naturally seedless, they have a soluble solids content exceeding 19%, low titratable acid content, and a sugar-acid ratio exceeding 20, resulting in excellent quality. Since their introduction to my country in 1998, their superior quality has led to rapid expansion nationwide, with planting areas reaching over 500,000 mu (approximately 33,333 hectares) at their peak, making them a favorite among people across the country. Crimson grapes combine numerous advantages, including seedlessness, late ripening, high yield, beautiful appearance, excellent quality, good storage and transportation properties, and a long shelf life, making them one of the best new grape varieties currently available and highly popular with consumers. However, Crimson grapes suffer from vigorous growth, difficulty in flowering, and poor color development, which severely restricts the development of the Crimson grape industry.

[0003] Traditional Crimson grape trellis systems primarily use T-shaped, Y-shaped, or flat trellises. These systems are effective for grape varieties with weak or moderate growth, but they have limitations for the vigorous Crimson grapes. For example, excessive shoot growth can lead to overly thick shoots and excessively large leaves; an imbalance between vegetative and reproductive growth results in poor flower bud differentiation, low fruit set, smaller fruit size, and lower sugar content, affecting both yield and quality. Furthermore, excessive shoot growth can cause canopy closure, reducing light utilization and photosynthesis. Additionally, the increased growth of shoots raises the labor costs of manual pruning and sap removal, reducing economic efficiency.

[0004] Therefore, there is a need for an economical and practical method that can regulate the balance between vegetative and reproductive growth in Crimson grapes. Summary of the Invention

[0005] This invention aims to solve the above-mentioned problems and provides a method for dual-control regulation of Crimson grape growth. By utilizing a grafting complex of rootstock-interrootstock-scion and adjusting the trellis to make the new shoots droop, the growth of Crimson grapes is simultaneously regulated. This enhances the stress resistance of Crimson grapes, promotes the production of nutrients, reduces the waste of nutrients, improves the efficiency of nutrient conversion and utilization, and reduces labor costs. It can reduce workload, lower labor costs, improve nutrient utilization efficiency, and increase economic benefits.

[0006] Specifically, the technical solution provided in this application is as follows: A method for dual-control regulation of Crimson grape growth, comprising the following steps:

[0007] Step S1: Crimson grape grafting;

[0008] Step S11: Prepare the grape rootstock, interstock, and scions.

[0009] Step S12: Grafting should be carried out in spring when the temperature is 10-20℃, using cleft grafting.

[0010] Step S13: After grafting, manage the grafting using conventional field management methods;

[0011] Step S2: Planting and shaping of Crimson grape grafted seedlings;

[0012] Step S21: Set up a corner post at each of the four corners of each plot of land; set up a tree root side post between two adjacent corner posts, with a distance of 3.6 meters between adjacent side posts;

[0013] The side post is 2.8 meters long, with its lower end buried 80 centimeters in the soil and its above-ground height 2 meters. The side post is fixed by ground anchors and steel strands.

[0014] The ground anchor is constructed by digging a pit 70-80cm deep 1m away from the side of the side post closest to the road, burying a precast anchor stone weighing about 10kg, connecting a steel strand to the anchor stone, and leading the steel strand out of the ground and firmly binding it to the upper and middle parts of the side post.

[0015] Planting rows are set between two opposite side posts, i.e., the planting rows run north-south. A central post is set in the planting row at the intersection of the east-west side posts and the north-south side posts. The central post is buried vertically in the soil to a depth of about 50cm. The height of the above-ground part is consistent with the side posts and is located on the center line of the planting row. Perimeter lines and main lines are set to form a steel strand grid.

[0016] The steel strand grid, at a horizontal height of 2m above the ground, connects the tops of the perimeter posts and corner posts around the vineyard with steel strands, tightens and fixes them to form a solid perimeter; the opposing perimeter posts, including those running east-west and north-south, are tightened with steel strands to form main lines; and branch lines are then laid with steel strands within the grid formed by the main lines.

[0017] Step S22: Plant Crimson grapes in north-south planting rows with a spacing of 1.5m between plants. Bend and fix the main vine of Crimson grapes so that the main vine is about 15cm away from the trunk line and grows along the trunk line.

[0018] Step S23: When the Crimson grapes guided in step S22 grow new shoots on their main vine, let them grow naturally to 25cm in length, then tie them to the first branch line, continue to let them grow naturally, and tie them to the second, third, and fourth branches respectively.

[0019] Step S24: When the grape shoots that have been guided in step S23 grow to the fourth branch, the shoots will naturally droop and grow under the influence of gravity, thus completing the growth regulation of Crimson grapes.

[0020] Furthermore, in step S11, the rootstock selected is the one-year-old, robust, disease- and pest-free multi-resistant rootstock Zhichang Anti-rootstock No. 1. Preferably, Zhichang Anti-rootstock No. 1 is bred by crossbreeding 5BB as the female parent and SO4 as the male parent.

[0021] Furthermore, in step S11, the intermediate rootstock is selected from Victoria grape rootstock. The Victoria grape rootstock is selected from healthy Victoria grape branches that are 10cm long and have no buds.

[0022] Furthermore, in step S11, the Crimson grape scions are selected from vigorous, plump, disease-free, one-year-old semi-lignified branches.

[0023] Furthermore, in step S12, the grafting first involves grafting the scion and the rootstock to form a scion-rootstock composite, and then immediately grafting the scion-rootstock composite to the base rootstock to form a scion-rootstock-base rootstock triple composite seedling.

[0024] Furthermore, the steel strand is made of 0.54mm steel strand and / or 0.36mm steel strand.

[0025] Furthermore, in step S21, an orchid screw is installed in the middle of the steel strand connecting the ground anchor to adjust the tightness.

[0026] Furthermore, in step S21, the setting of branch lines is specifically as follows: for each east-west branch line, there is one branch line 40cm apart from the main line, and eight branch lines are stretched between the two side pillars; for the north-south branch line, there is one branch line stretched 20cm apart from the main line, and then another branch line is stretched 40cm apart. Unlike the east-west branch line, there is one less branch line in the middle of the north-south branch line, forming an 80cm wide drooping strip of branches.

[0027] The present invention has the following advantages / benefits:

[0028] This invention provides a simple and effective method for regulating the balance between vegetative and reproductive growth in Crimson grapes. Firstly, this invention uses the multi-resistant rootstock Zhichang Anti-Rootstock No. 1 as the base rootstock, which possesses advantages such as drought resistance, cold resistance, waterlogging tolerance, salt and alkali tolerance, and high resistance to phylloxera and root-knot nematodes. This significantly improves the stress resistance of Crimson grapes, enabling them to adapt to complex and changing planting environments, thus improving fruit quality and increasing the planting area. Secondly, this invention utilizes the relatively weak Victoria grape as an interplant to regulate nutrient transport between the aboveground and underground parts. By altering the amount of nutrients transported from the upper part of the interplant, the transport of nutrients to the underground parts is reduced, which is beneficial for… Nutrients accumulate more within the canopy; thirdly, timely and reasonable trellising of new shoots on a flat trellis aims to inhibit excessive growth of Crimson grape shoots, forcing nutrients within the shoots to flow back and be stored more in leaves, flower buds, and fruits, reducing nutrient waste caused by excessive shoot growth, improving nutrient utilization, and reducing the labor required for manual pinching and shaping to control excessive growth, thus lowering labor costs; at the same time, the horizontal spread of new shoots increases the area exposed to three-dimensional light, effectively improving light utilization and facilitating the conversion of nutrients in the tree.

[0029] In summary, this invention utilizes a dual control method—a grafting composite of rootstock, interrootstock, and scion, combined with adjusting the trellis to cause the new shoots to droop—to simultaneously regulate the growth of Crimson grapes. This enhances the grapes' resistance to adverse conditions, promotes nutrient production, reduces nutrient waste, improves nutrient conversion and utilization efficiency, and lowers labor costs. Ultimately, this reduces workload, lowers labor costs, increases nutrient utilization efficiency, and enhances economic benefits. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one embodiment of the present invention. For those skilled in the art, other embodiments can be derived from the provided drawings without creative effort.

[0031] Figure 1 : Schematic diagram of the column-supported wiring structure of the present invention;

[0032] Figure 2 : A schematic diagram of the grape planting structure of the present invention;

[0033] Figure 3 : A schematic diagram of the grape trellis structure of the present invention;

[0034] Figure 4 : A schematic diagram of the growth of grape shoots under the guidance of the present invention. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. The following embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention in any way. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention. Unless otherwise specified, the methods used in the present invention are conventional methods. Unless otherwise specified, the materials and reagents used in the present invention are commercially available. Furthermore, other terms used in the present invention, unless otherwise specified, generally have the meanings commonly understood by those skilled in the art.

[0036] Example

[0037] A method for dual-control regulation of Crimson grape growth includes the following steps:

[0038] Step S1: Crimson grape grafting;

[0039] Step S11: Prepare the grape rootstock, interstock, and scions.

[0040] Step S12: Grafting should be carried out in spring when the temperature is 10-20℃, using cleft grafting.

[0041] Step S13: After grafting, manage the grafting using conventional field management methods;

[0042] Step S2: Planting and shaping of Crimson grape grafted seedlings;

[0043] Step S21: Set up a corner post at each of the four corners of each plot of land; set up a tree root side post between two adjacent corner posts, with a distance of 3.6 meters between adjacent side posts;

[0044] The side post is 2.8 meters long, with its lower end buried 80 centimeters in the soil and its above-ground height 2 meters. The side post is fixed by ground anchors and steel strands.

[0045] The ground anchor is constructed by digging a pit 70-80cm deep 1m away from the side of the side post closest to the road, burying a precast anchor stone weighing about 10kg, connecting a steel strand to the anchor stone, and leading the steel strand out of the ground and firmly binding it to the upper and middle parts of the side post.

[0046] Planting rows are set between two opposite side posts, i.e., the planting rows run north-south. A central post is set in the planting row at the intersection of the east-west side posts and the north-south side posts. The central post is buried vertically in the soil to a depth of about 50cm. The height of the above-ground part is consistent with the side posts and is located on the center line of the planting row. Perimeter lines and main lines are set to form a steel strand grid.

[0047] The steel strand grid, at a horizontal height of 2m above the ground, connects the tops of the perimeter posts and corner posts around the vineyard with steel strands, tightens and fixes them to form a solid perimeter; the opposing perimeter posts, including those running east-west and north-south, are tightened with steel strands to form main lines; and branch lines are then laid with steel strands within the grid formed by the main lines.

[0048] Step S22: Plant Crimson grapes in north-south planting rows with a spacing of 1.5m between plants. Bend and fix the main vine of Crimson grapes so that the main vine is about 15cm away from the trunk line and grows along the trunk line.

[0049] Step S23: When the Crimson grapes guided in step S22 grow new shoots on their main vine, let them grow naturally to 25cm in length, then tie them to the first branch line, continue to let them grow naturally, and tie them to the second, third, and fourth branches respectively.

[0050] Step S24: When the grape shoots that have been guided in step S23 grow to the fourth branch, the shoots will naturally droop and grow under the influence of gravity, thus completing the growth regulation of Crimson grapes.

[0051] Furthermore, in step S11, the rootstock selected is the one-year-old, robust, disease- and pest-free multi-resistant rootstock Zhichang Anti-rootstock No. 1. Preferably, Zhichang Anti-rootstock No. 1 is bred by crossbreeding 5BB as the female parent and SO4 as the male parent.

[0052] Furthermore, in step S11, the intermediate rootstock is selected from Victoria grape rootstock, and the Victoria grape rootstock is selected from healthy Victoria grape branches with no buds and a length of 10cm.

[0053] Furthermore, in step S11, the Crimson grape scions are selected from vigorous, plump, disease-free, one-year-old semi-lignified branches.

[0054] Furthermore, in step S12, the grafting first involves grafting the scion and the rootstock to form a scion-rootstock composite, and then immediately grafting the scion-rootstock composite to the base rootstock to form a scion-rootstock-base rootstock triple composite seedling.

[0055] Furthermore, the steel strand is made of 0.54mm steel strand and / or 0.36mm steel strand.

[0056] Furthermore, in step S21, an orchid screw is installed in the middle of the steel strand connecting the ground anchor to adjust the tightness.

[0057] Furthermore, in step S21, the setting of branch lines is specifically as follows: for each east-west branch line, there is one branch line 40cm apart from the main line, and eight branch lines are stretched between the two side pillars; for the north-south branch line, there is one branch line stretched 20cm apart from the main line, and then another branch line is stretched 40cm apart. Unlike the east-west branch line, there is one less branch line in the middle of the north-south branch line, forming an 80cm wide drooping strip of branches.

[0058] Experimental example:

[0059] 1. Purpose of the experiment

[0060] Experiments were conducted to investigate the effects of different rootstocks, intermediate rootstocks, and trellises on Crimson grape production, and to screen out suitable methods for regulating Crimson grape growth, providing guidance for high-yield and early-maturing Crimson grapes.

[0061] 2. Materials and Methods

[0062] 2.1 Test Site

[0063] The test site was located at Shandong Zhichang Agricultural Technology Development Co., Ltd. in Rizhao City, Shandong Province, at 118°83′E and 35°58′N. The area has a temperate monsoon climate with four distinct seasons and clear hot and cold seasons. The average annual temperature is 12.7℃, the annual rainfall is 768.7mm, the annual sunshine duration is 2432.8 hours, the sunshine rate is 55%, and the annual frost-free period is 203 days.

[0064] 2.2 Test Materials

[0065] (1) Variety: Crimson grape

[0066] (2) Rootstock: Zhichang Anti-Growth Rootstock No. 1, SO4 Grape Rootstock

[0067] (3) Interplant: Victoria grape rootstock

[0068] Zhichang Anti-Rootstock No. 1 was bred through hybridization using 5BB as the female parent and SO4 as the male parent. Hybridization took place in the spring of 2006, yielding 56 hybrid seeds in the autumn. After sand stratification, the seeds were germinated in the spring of 2007 and sown, resulting in 21 hybrid seedlings. In May of the same year, these seedlings were planted in nutrient pots at the Shandong Zhichang Grape Research Institute's experimental vineyard, where they were cultivated under trellises and managed with normal water, fertilizer, and vine management. Each seedling was individually numbered and investigated. In 2008, the root systems of all individual plants were analyzed for cold resistance using a low-temperature exothermic analysis method. Individual plants with cold resistance exceeding that of the male parent S04 were selected and numbered 07-05-18. From 2009 to 2012, salt tolerance was assessed, with salt tolerance exceeding that of 5BB, and these were initially selected as superior individual plants. After natural selection for cold resistance in the field, all plants were able to overwinter normally in Shandong without being buried in soil. After regional trials in Shandong, Zhejiang, Yunnan, Gansu, and Xinjiang from 2012 to 2016, it showed good growth. In 2022, it was registered as a non-major crop variety and named 'Zhichang Kangzhan No. 1'.

[0069] 2.3 Experimental Design

[0070] The prepared Crimson grape scions are grafted onto the interstem branches, ensuring the graft union is aligned, tightly wrapped, and bound. The grafting of the interstem and the scion variety is completed simultaneously, and then grafted onto the base rootstock to form a triple-layered composite seedling. The combination scheme is shown in Table 1.

[0071] Table 1: Different experimental treatment combinations

[0072] Processing Number Anvil anvil scion stance Comparative Example 1 / / Crimson grapes Flat trellis Comparative Example 2 Zhichang Anti-Growth Rootstock No. 1 / Crimson grapes Flat trellis Comparative Example 3 Zhichang Anti-Growth Rootstock No. 1 Victoria grape rootstock Crimson grapes flat trellis Comparative Example 4 SO4 grape rootstock Victoria grape rootstock Crimson grapes This invention's frame Experimental Example 1 Zhichang Anti-Growth Rootstock No. 1 Victoria grape rootstock Crimson grapes This invention's frame

[0073] 3. Experimental process

[0074] Step S21: Set up a corner post at each of the four corners of each plot of land, and set up a side post between each pair of adjacent corner posts, with a distance of 3.6 meters between the side posts;

[0075] The side post is 2.8 meters long, buried 80 cm deep in the soil, and 2 meters high above ground. The side post is fixed by ground anchors and support columns.

[0076] The ground anchor is constructed by digging a pit 70-80cm deep 1m away from the side of the side post closest to the road, burying a precast anchor stone weighing about 10kg, connecting a steel strand to the anchor stone, and leading the steel strand out of the ground and firmly binding it to the upper and middle parts of the side post.

[0077] The planting row is located between the two opposite side posts, which run north-south. A central post is placed in the planting row. At the intersection of the east-west and north-south side posts, the central post is buried vertically in the soil to a depth of about 50cm. The height is consistent with the side posts and it is located on the center line of the row. Perimeter lines and main lines are laid to form a steel strand grid.

[0078] The steel strand grid, at a horizontal height of 2m above the ground, connects the tops of the perimeter posts and corner posts around the vineyard with steel strands, tightens and fixes them to form a solid perimeter. The opposing perimeter posts, including those running east-west and north-south, are tightened with steel strands to form main lines. In the grid formed by the main lines with steel strands, branch lines are then laid with 0.36mm steel strands.

[0079] Step S22: Plant Crimson grapes along the processed pillars in a north-south direction with a spacing of 1.5m between plants. Bend and fix the main vine of Crimson grapes so that the main vine is about 15cm away from the trunk line and grows along the trunk line.

[0080] The term "column" is a general term, referring to all corner columns, side columns, and center columns.

[0081] Step S23: When the Crimson grapes guided in step S22 grow new shoots on their main vine, let them grow naturally to 25cm in length, then tie them to the first branch line, continue to let them grow naturally, and tie them to the second, third, and fourth branches respectively.

[0082] like Figure 4 As shown, the branches extending outwards from the main grapevine are the first branch, the second branch, the third branch, and the fourth branch.

[0083] Step S24: When the grape shoots that have been guided in step S23 grow to the fourth branch, the shoots will naturally droop and grow under the influence of gravity, thus completing the growth regulation of Crimson grapes.

[0084] Furthermore, the steel strand is made of 0.54mm steel strand and / or 0.36mm steel strand.

[0085] Furthermore, in step S21, an orchid screw is installed in the middle of the steel strand connecting the ground anchor to adjust the tightness.

[0086] Furthermore, in step S21, the setting of branch lines is specifically as follows: for each east-west branch line, there is one branch line 40cm apart from the main line, and eight branch lines are stretched between the two side pillars; for the north-south branch line, there is one branch line stretched 20cm apart from the main line, and then another branch line is stretched 40cm apart. Unlike the east-west branch line, there is one less branch line in the middle of the north-south branch line, forming an 80cm wide drooping strip of branches.

[0087] From this point on, the growth regulation of Crimson grapes was completed, and conventional field management was adopted.

[0088] 2.4 Test Results Investigation and Measurement Methods

[0089] Growth vigor and fruit condition were measured for different rootstock-scion and trellis combinations. Growth vigor indicators included new shoot length, number of new shoot leaves, summer growth, new shoot thickness, and single leaf weight; fruit condition indicators included berry weight, berry volume, fruit shape index, bunch weight, and titratable solids content.

[0090] During the fruit harvest period, the weight of the berries and bunches was measured using an electronic balance; the volume of the fruit was measured using the displacement method; the longitudinal and transverse diameters of the fruit were measured using vernier calipers, and the fruit shape index was calculated as the ratio of the longitudinal diameter to the transverse diameter of the fruit; the soluble solids content was determined using an ATAGO refractometer; and the color index of the fruit was calculated by measuring the L, a, and b values ​​of the color index at the equator of the berries using a CR-400 handheld colorimeter (Konica Minolta, Japan).

[0091] In early September, the number of leaves on each new shoot was counted, the length of the new shoot was measured with a tape measure, and all new shoots exceeding 1.5m were cut off with a single cut and weighed as summer growth. The thickness of the third node of the current year's branches was measured with vernier calipers. The weight of a single leaf was measured using an electronic balance.

[0092] 2.5 Experimental Results and Analysis

[0093] The experimental results are shown in Tables 2 and 3.

[0094] Table 2: Growth vigor of different rootstock-scion and trellis combinations

[0095]

[0096]

[0097] Table 3: Fruit growth under different rootstock / scion and trellis combinations

[0098]

[0099] This experiment shows that, in terms of growth vigor, grafting rootstock alone enhances the growth of Crimson grapes; grafting interrootstocks inhibits the growth vigor of Crimson grapes, with the Crimson / Victoria / Zhichang Anti-Rootstock No. 1 + this invention's trellis system showing the most significant effect. Regarding fruit yield and quality, the combination using Victoria grape rootstock as interrootstock exhibits excellent berry and bunch size, fruit sugar content, and fruit color index, significantly higher than other combinations. In summary, utilizing the trellis system of this invention, with Zhichang Anti-Rootstock No. 1 as the base rootstock and Victoria grape as the interrootstock, can effectively control the growth vigor of Crimson grapevines and improve fruit yield and quality.

[0100] It is understood that those skilled in the art can make equivalent substitutions or modifications to the technical solutions and concepts of this invention, and all such substitutions or modifications should fall within the protection scope of the appended claims.

Claims

1. A method for dual-control regulation of Crimson grape growth, characterized in that, Includes the following steps: Step S1: Crimson grape grafting; Step S11: Prepare the grape rootstock, interstock, and scions. Step S12: Grafting should be carried out in spring when the temperature is 10~20℃, using cleft grafting. Step S13: After grafting, manage the grafting using conventional field management methods; Step S2: Planting and shaping of Crimson grape grafted seedlings; Step S21: Set up a corner post at each of the four corners of each plot of land; set up several side posts between two adjacent corner posts, with a distance of 3.6 meters between adjacent side posts; The side post is 2.8 meters long, with its lower end buried 80 centimeters in the soil and its above-ground height 2 meters. The side post is fixed by ground anchors and steel strands. The ground anchor is constructed by digging a pit 70-80cm deep 1m away from the side of the side post closest to the road, burying a precast anchor stone weighing about 10kg, connecting a steel strand to the anchor stone, and leading the steel strand out of the ground and firmly binding it to the upper and middle parts of the side post. Planting rows are set between two opposite side posts, i.e., the planting rows run north-south. A central post is set in the planting row at the intersection of the east-west side posts and the north-south side posts. The central post is buried vertically in the soil to a depth of about 50cm. The height of the above-ground part is consistent with the side posts and is located on the center line of the planting row. Perimeter lines and main lines are set to form a steel strand grid. The steel strand grid, at a horizontal height of 2m above the ground, connects the tops of the perimeter posts and corner posts around the vineyard with steel strands, tightens and fixes them to form a solid perimeter; the opposing perimeter posts, including those running east-west and north-south, are tightened with steel strands to form main lines; and branch lines are then laid with steel strands within the grid formed by the main lines. Step S22: Plant Crimson grapes in north-south planting rows with a spacing of 1.5m between plants. Bend and fix the main vine of Crimson grapes so that the main vine is about 15cm away from the trunk line and grows along the trunk line. Step S23: When the Crimson grapes guided in step S22 grow new shoots on their main vine, let them grow naturally to 25cm in length, then tie them to the first branch line, continue to let them grow naturally, and tie them to the second, third, and fourth branches respectively. Step S24: When the grape shoots that have been guided in step S23 grow to the fourth branch, the shoots will naturally droop and grow under the influence of gravity, thus completing the growth regulation of Crimson grapes. In step S11, the base rootstock is selected as the one-year-old, robust, disease-free, and multi-resistant rootstock Zhichang Anti-rootstock No. 1; Zhichang Anti-rootstock No. 1 is bred by hybridization of 5BB as the female parent and SO4 as the male parent; the intermediate rootstock is selected as the Victoria grape rootstock.

2. The method for dual-control regulation of Crimson grape growth according to claim 1, characterized in that, The Victoria grape rootstock is selected from healthy Victoria grape branches that are 10cm long and have no buds.

3. The method for dual-control regulation of Crimson grape growth according to claim 1, characterized in that, In step S11, the Crimson grape scions are selected from vigorous, plump, disease-free, one-year-old semi-lignified branches.

4. The method for dual-control regulation of Crimson grape growth according to claim 1, characterized in that, In step S12, the grafting first involves grafting the scion and the rootstock to form a scion-rootstock composite, and then immediately grafting the scion-rootstock composite to the base rootstock to form a triple composite seedling of scion-rootstock-base rootstock.

5. The method for dual-control regulation of Crimson grape growth according to claim 1, characterized in that, The steel strand used is 0.54mm steel strand and / or 0.36mm steel strand.

6. The method for dual-control regulation of Crimson grape growth according to claim 1, characterized in that, In step S21, an orchid screw is installed in the middle of the steel strand connecting the ground anchor to adjust the tightness.

7. The method for dual-control regulation of Crimson grape growth according to claim 1, characterized in that, In step S21, the setting of branch lines is specifically as follows: for each east-west branch line, there is one branch line 40cm apart from the main line, and eight branch lines are stretched between the two side pillars; for the north-south branch line, there is one branch line stretched 20cm apart from the main line, and then another branch line is stretched 40cm apart from the main line. Unlike the east-west branch line, there is one less branch line in the middle of the north-south branch line, forming an 80cm wide drooping strip of branches.

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