Woody flower high-position grafting and synergistic growth regulation and control method

Abstract

The invention belongs to the technical field of grafting methods, and provides a woody flower top grafting and synergistic growth regulation method which comprises the following steps: 30-60 days before grafting, performing graded fertilization and synchronously completing girdling according to the ground diameter of a stock trunk; from mid-to-late February to early-to-mid April, grafting is conducted at the position 5-10 cm above the girdling belt, and used scions are soaked in scion activity enhancing liquid for 30-60 s in advance; after grafting, a three-layer composite moisturizing cover is immediately arranged in a sleeving mode, the internal temperature is controlled to be 24-26 DEG C, and the humidity is controlled to be 85-90% RH; after 20-45 days, the three-layer composite moisturizing cover is removed, pinching and short cutting are carried out on the scions with the length larger than 20 cm until 2-3 buds appear, leaf fertilizer containing monopotassium phosphate and chelated boron is sprayed to the scions with the length smaller than 15 cm, and light shielding treatment is carried out. The high-position grafting method has the advantages of being high in survival rate and rapid in scene formation, single-plant multi-variety symbiosis can be achieved, and the technical effect of improving the ornamental value and the economic value of woody flowers can be achieved.

Description

Technical Field

[0001] This invention relates to the field of grafting methods, and in particular to a method for high-position grafting and synergistic growth regulation of woody flowering plants. Background Technology

[0002] Traditional high-position grafting techniques are mostly used for fruit trees or single-variety renewal, and suffer from problems such as low survival rates (survival rate of multi-variety grafting <60%), crown imbalance rate >80%, high graft union mold rate (>18%), and long growth period (12-14 months). In particular, current techniques cannot achieve a three-dimensional, multi-variety, multi-layered, and multi-colored composite ornamental effect on established large shrubs. Furthermore, traditional high-position grafting is mostly performed at the base or low position of seedlings for seedling cultivation and variety renewal, while high-position grafting (more than 1 meter above the ground) of fruit trees and some landscape trees aims to increase yield and improve tree shape. However, existing grafting techniques for woody flowers, especially high-position grafting, have many limitations, such as the survival rate of single-variety or multi-variety grafting being less than 60%, the low application of high-position grafting and the immature technology leading to unstable survival rates, the large differences in affinity between different varieties and scions and high-position rootstocks, and the lack of a synergistic regulation mechanism between rootstock and scion leading to a crown imbalance rate of more than 80%, the inconvenience of high-position operation and insufficient interface protection technology leading to a failure rate of more than 40%, the uneven growth vigor of multiple varieties easily leading to crown imbalance, and the long period of time required for the graft to mature.

[0003] Meanwhile, high-position grafting suffers from drawbacks such as low success rates due to significant influences from the environment, operational techniques, and rootstock-scion compatibility, as well as a lack of systematic methods to address the issue of coordinated growth management after grafting multiple varieties, which easily leads to failure. Therefore, existing technologies cannot quickly achieve a three-dimensional, multi-layered, and multi-colored flower / leaf / flower-shape three-dimensional composite ornamental effect on single woody flowering plants, especially mature shrubs. Thus, there is an urgent need in this field for a high-survival-rate high-position grafting method for woody flowering plants. Summary of the Invention

[0004] The purpose of this invention is to provide a method for high-position grafting and synergistic growth regulation of woody flowering plants, applicable to high-position symbiotic grafting of multiple varieties of woody flowering plants such as roses and camellias. This grafting method is characterized by its ease of operation, high survival rate, ability to achieve high-position symbiosis of multiple varieties on a single woody flowering plant, dynamic balance of growth vigor, and rapid landscaping. It enables successful grafting onto high-position branches of a single rootstock while simultaneously addressing the compatibility issues of high-position symbiosis among multiple varieties. The technical solution of this application provides a comprehensive management scheme to ensure balanced tree vigor, coordinated growth, and dynamic balance of growth vigor after multi-variety grafting, combined with the construction of a high-survival-rate interface microenvironment. This achieves the technical effect of shortening the landscaping time for high-position grafting of multiple varieties of woody flowering plants and enhancing their ornamental and economic value. This invention provides a method for high-position grafting and synergistic growth regulation of woody flowers. Through a synergistic technical system of girdling for nutrient enrichment, precise microenvironment control, and differentiated treatment of scions, it achieves a high-position multi-variety grafting survival rate of ≥92%, a canopy balance rate of ≥93%, and a 40-50% reduction in the growth cycle.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solution:

[0006] This invention provides a method for high-position grafting and synergistic growth regulation of woody flowering plants, comprising the following steps:

[0007] (1) 30 to 60 days before grafting, apply fertilizer in stages according to the diameter of the rootstock trunk and complete girdling at the same time.

[0008] The method of graded fertilization is as follows:

[0009] When the rootstock trunk diameter is 3cm or less and 5cm or less, the girdling width is 0.5-0.8cm, and 1-3kg of well-rotted organic fertilizer is applied per plant in the girdling trench.

[0010] When the rootstock trunk diameter is 5cm or less and 8cm or less, the girdling width is 0.8-1cm, and 3-5kg of decomposed organic fertilizer is applied per plant in the radial trench.

[0011] When the rootstock trunk diameter is >8cm, the girdling width is 0.8-1cm, and 5-10kg of decomposed organic fertilizer is applied per plant in the hole;

[0012] The girdling is performed at a distance of 1 to 1.5 meters from the ground.

[0013] (2) From mid-February to mid-April, grafting is performed 5-10 cm above the girdling strip. The scions used are pre-soaked in a scion activity enhancement solution containing indolebutyric acid, carbendazim, sucrose, and seaweed extract for 30-60 seconds.

[0014] (3) Immediately after grafting, a three-layer composite moisture-retaining cover is installed to control the internal temperature at 24-26℃ and the humidity at 85-90%RH.

[0015] (4) After 20 to 45 days, remove the three-layer composite moisture cover. For scions with a length >20cm, pinch off the tip to shorten to 2 to 3 buds. For scions with a length <15cm, spray with foliar fertilizer containing potassium dihydrogen phosphate and chelated boron and treat in the dark. This will achieve a crown width difference of ≤15% and a survival rate of ≥92% for multiple varieties of scions on the same rootstock.

[0016] Preferably, in step (1), the annular groove is 20-30cm away from the main trunk, the depth of the annular groove is 30-40cm, and the width of the annular groove is 10-15cm.

[0017] The number of radial trenches is 4 to 6. The starting point of the radial trench is 25 to 35 cm away from the base of the trunk, and the ending point of the radial trench is 20 to 40 cm away from the drip line of the canopy. The depth of the radial trench gradually increases from the inside to the outside, with a depth of 15 to 25 cm near the trunk and a depth of 35 to 45 cm away from the trunk, forming a gentle slope.

[0018] The fertilization holes for applying well-rotted organic fertilizer are located 30-50cm from the drip line of the tree canopy, with 4-6 holes evenly distributed around the trunk, and the depth of the holes is 40-50cm.

[0019] Preferably, the grafting method in step (2) is one or more of the following: modified cleft grafting, inlay bud grafting, side grafting, and bark grafting. The grafting interface shape is one of the following: vertical cleft, T-shaped cut, and oblique cut. The grafting density is as follows: when 3cm ≤ the trunk diameter of the rootstock ≤ 5cm, the number of scions is 3 to 4, and the grafting sites are distributed in one layer at intervals of 85° to 120°. When the trunk diameter of the rootstock is > 5cm, the number of scions is 5 to 8, the number of grafting layers is 2 to 3, the grafting sites in the same layer are distributed at intervals of 85° to 180°, and the distance between two layers of grafting sites is 15 to 25cm.

[0020] As a preferred embodiment, the specific method of the improved cleft grafting is as follows: make a "T"-shaped cut 2-4 cm deep on the rootstock, cut the scion into a wedge shape of 2-3 cm on both sides, quickly insert the scion into the cut, and fix it; the material used for fixing is an elastic rubber grafting film or a paraffin film.

[0021] Preferably, the scion in step (2) is a 1-2 year old branch with a length of 5-12 cm, and the scion activity enhancement liquid contains the following raw materials in a final concentration with water as the solvent: 0.05-0.1 wt% indolebutyric acid, 0.1-0.5 wt% carbendazim, 2-5 wt% sucrose and 0.2-0.4 wt% seaweed extract.

[0022] Preferably, the three-layer composite moisturizing cover in step (3) consists of an inner elastic PO self-adhesive grafting film, a middle nanofiber moisturizing cotton sheet, an outer PO light-transmitting film, and a bottom elastic sealing ring. The thickness of the moisturizing cover is 80-100μm, and the thickness ratio of the inner-middle-outer layer is 1:2:1.

[0023] Preferably, the foliar fertilizer in step (4) contains the following raw materials in a final concentration using water as a solvent: 0.05-0.15 wt% potassium dihydrogen phosphate and 0.04-0.06 wt% chelated boron. The amount of foliar fertilizer applied is 10-20 mL per scion, the frequency of foliar fertilizer application is 5-7 days / time, and the number of foliar fertilizer applications is 1-3 times.

[0024] This invention also provides the application of the method in improving the survival rate of woody flowering plants.

[0025] Preferably, the application method is as follows: grafting ≥3 varieties onto the same rootstock, with a survival rate of ≥90% for each variety and a crown balance rate of ≥90%.

[0026] The beneficial effects of this invention are as follows:

[0027] This invention provides a method for high-position grafting and synergistic growth regulation of woody flowering plants. This technical solution has the following advantages over existing technologies:

[0028] (1) High survival rate: The technical solution of this application, through systematic optimization of pretreatment, scion treatment and moisture protection, significantly increases the survival rate of high-position multi-variety grafting to over 92%, which is far higher than the 65% to 75% of traditional methods, and significantly increases by over 23%.

[0029] (2) Achieving symbiosis of multiple varieties on a single plant: The technical solution of this application successfully grafts and cultivates multiple varieties with different flower colors, flower shapes, leaf colors or flowering periods on the high crown of the same woody flower, forming a unique three-dimensional landscape of "one tree with multiple flowers" and "one tree with multiple colors".

[0030] (3) Rapid landscape creation: Compared with cultivating multiple varieties from seedlings or grafting and crown replacement, the technical solution of this application can achieve rich ornamental effects on existing mature plants within 1 to 2 growing seasons after grafting, thus shortening the landscape creation cycle.

[0031] (4) Enhance ornamental and economic value: The technical solution of this application greatly enhances the artistry, rarity and attractiveness of woody flowers, especially as landscape trees, courtyard trees and bonsai materials, and significantly improves their garden application value and economic value.

[0032] (5) Balanced and controllable tree vigor: The innovative synergistic growth regulation technology in this application effectively solves the problem of growth competition after grafting multiple varieties, and maintains the overall coordination and long-term health of the tree canopy.

[0033] (6) High operational feasibility: The technical solution of this application provides a complete and highly operable high-level grafting process and management specifications, which are easy to promote and apply to landscaping, flower production and home gardening.

[0034] (7) Compared with the prior art, the technical solution of the present invention solves the key technical problems such as low survival rate, tree crown imbalance and long growth cycle in the existing high-position grafting technology by using a synergistic technical system of girdling pretreatment + microenvironment control + scion differential regulation. Attached Figure Description

[0035] Figure 1 Diagram of the multidimensional regulation technology system for rootstock. Detailed Implementation

[0036] This invention provides a method for high-position grafting and synergistic growth regulation of woody flowering plants, comprising the following steps:

[0037] (1) 30 to 60 days before grafting, apply fertilizer in stages according to the diameter of the rootstock trunk and complete girdling at the same time.

[0038] The method of graded fertilization is as follows:

[0039] When the rootstock trunk diameter is 3cm or less and 5cm or less, the girdling width is 0.5-0.8cm, and 1-3kg of well-rotted organic fertilizer is applied per plant in the girdling trench.

[0040] When the rootstock trunk diameter is 5cm or less and 8cm or less, the girdling width is 0.8-1cm, and 3-5kg of decomposed organic fertilizer is applied per plant in the radial trench.

[0041] When the rootstock trunk diameter is >8cm, the girdling width is 0.8-1cm, and 5-10kg of decomposed organic fertilizer is applied per plant in the hole;

[0042] The girdling is performed at a distance of 1 to 1.5 meters from the ground.

[0043] (2) From mid-February to mid-April, grafting is performed 5-10 cm above the girdling strip. The scions used are pre-soaked in a scion activity enhancement solution containing indolebutyric acid, carbendazim, sucrose, and seaweed extract for 30-60 seconds.

[0044] (3) Immediately after grafting, a three-layer composite moisture-retaining cover is installed to control the internal temperature at 24-26℃ and the humidity at 85-90%RH.

[0045] (4) After 20 to 45 days, remove the three-layer composite moisture cover. For scions with a length >20cm, pinch off the tip to shorten to 2 to 3 buds. For scions with a length <15cm, spray with foliar fertilizer containing potassium dihydrogen phosphate and chelated boron and treat in the dark. This will achieve a crown width difference of ≤15% and a survival rate of ≥92% for multiple varieties of scions on the same rootstock.

[0046] In this invention, the annular groove in step (1) is preferably 20-30cm away from the main trunk, more preferably 25cm away from the main trunk, the depth of the annular groove is preferably 30-40cm, more preferably 35cm, and the width of the annular groove is preferably 10-15cm, more preferably 13cm.

[0047] The number of radial trenches is preferably 4 to 6, more preferably 5. The starting point of the radial trench is preferably 25 to 35 cm from the base of the trunk, more preferably 30 cm. The ending point of the radial trench is preferably 20 to 40 cm from the drip line of the canopy, more preferably 30 cm. The depth of the radial trench gradually increases from the inside to the outside. The depth near the trunk is preferably 15 to 25 cm, more preferably 15 to 25 cm, and the depth away from the trunk is preferably 35 to 45 cm, more preferably 40 cm, forming a gentle slope.

[0048] The distance between the fertilization hole for applying well-rotted organic fertilizer and the drip line of the tree canopy is 30-50cm, more preferably 40cm. The number of fertilization holes is preferably 4-6, more preferably 5, evenly distributed around the main trunk. The depth of the fertilization hole is preferably 40-50cm, more preferably 45cm.

[0049] In this invention, the grafting method in step (2) is preferably one or more of modified cleft grafting, inlay bud grafting, side grafting, and bark grafting, more preferably modified cleft grafting. The grafting interface shape is preferably one of vertical cleft, T-shaped cut, and oblique cut, more preferably T-shaped cut. The grafting density is preferably: when 3cm ≤ rootstock trunk diameter ≤ 5cm, the number of scions is 3-4, and the grafting sites are distributed in a single layer at 85°-120° intervals; when the rootstock trunk diameter > 5cm, the number of scions is... The number of grafts is 5 to 8, with 2 to 3 layers. The grafting sites in the same layer are distributed at intervals of 85° to 180°, and the distance between two layers of grafting sites is 15 to 25 cm. More preferably, when the trunk diameter of the rootstock is 3 cm ≤ 5 cm, the number of scions is 4, and the grafting sites are distributed in one layer at intervals of 90°. When the trunk diameter of the rootstock is > 5 cm, the number of scions is 6, with 2 layers. The grafting sites in each layer are distributed at intervals of 90° to 120°, and the distance between two layers of grafting sites is preferably 20 cm.

[0050] In this invention, the preferred method for the improved cleft grafting is as follows: making a 2-4 cm deep "T"-shaped cut in the rootstock, shaping the scion into a 2-3 cm wedge shape on both sides, and quickly inserting the scion into the cut for fixation. More preferably, making a 3 cm deep "T"-shaped cut in the rootstock, shaping the scion into a 2.5 cm wedge shape on both sides, and quickly inserting the scion into the cut for fixation. The material used for fixation is preferably an elastic rubber grafting film or a paraffin film, more preferably a paraffin film.

[0051] In this invention, the scion mentioned in step (2) is preferably a 1-2 year old branch, more preferably a 2-year old branch, and the length of the scion is preferably 5-12 cm, more preferably 8 cm. The scion activity enhancement liquid, with water as the solvent, preferably contains the following raw materials at the final concentration: 0.05-0.1 wt% indolebutyric acid, 0.1-0.5 wt% carbendazim, 2-5 wt% sucrose and 0.2-0.4 wt% seaweed extract, and more preferably contains the following raw materials at the final concentration: 0.08 wt% indolebutyric acid, 0.3 wt% carbendazim, 3 wt% sucrose and 0.3 wt% seaweed extract.

[0052] In this invention, the three-layer composite moisturizing cover in step (3) is preferably composed of an inner elastic PO self-adhesive grafting film, a middle nanofiber moisturizing cotton sheet, an outer PO light-transmitting film and a bottom elastic sealing ring. The thickness of the moisturizing cover is preferably 80-100μm, more preferably 90μm, and the thickness ratio of the inner-middle-outer layer is preferably 1:2:1.

[0053] In this invention, the foliar fertilizer in step (4) contains the following raw materials in a final concentration using water as a solvent: 0.05-0.15 wt% potassium dihydrogen phosphate and 0.04-0.06 wt% chelated boron, and more preferably contains the following raw materials in a final concentration: 0.1 wt% urea and 0.05 wt% chelated boron. The preferred amount of foliar fertilizer applied is 10-20 mL per scion, more preferably 15 mL per scion. The preferred frequency of foliar fertilizer application is 5-7 days / time, more preferably 6 days / time. The preferred number of foliar fertilizer applications is 1-3 times, more preferably 2 times.

[0054] This invention also provides the application of the method in improving the survival rate of woody flowering plants, with specific grafting methods as follows: Figure 1 As shown.

[0055] In this invention, the preferred method of application is: grafting ≥3 varieties onto the same rootstock, with a survival rate of ≥90% for each variety and a crown balance rate of ≥90%.

[0056] The technical solutions provided by the present invention will be described in detail below with reference to the embodiments, but they should not be construed as limiting the scope of protection of the present invention.

[0057] Example 1

[0058] 1. Graft three varieties of roses, 'Coral Jelly', 'Juice Balcony', and 'Golden Celebration', onto thornless rose rootstock with a trunk diameter of 5cm.

[0059] (1) On February 5, well-rotted organic fertilizer was applied to the thornless rose rootstock, and girdling was performed on the rootstock at a position 1.1m above the ground to form a girdling strip 0.8cm wide and deep to the xylem;

[0060] The amount of the well-rotted organic fertilizer applied is 2 kg / tree. The fertilization method is to apply it in a circular trench around the drip line of the tree canopy (outer edge of the vertical projection line of the tree canopy). The circular trench is 25 cm away from the trunk, 35 cm deep, and 12 cm wide.

[0061] (2) On March 25, grafting was performed 5cm above the girdling strip;

[0062] There are 4 grafting sites, and the grafting sites are in 1 layer. Each grafting site is distributed at a 90° interval. There is 1 scion for 'Coral Jelly', 2 scions for 'Juice Balcony', and 1 scion for 'Golden Celebration'. The length of the scion is 10cm, and each scion is a branch with 3 plump buds.

[0063] The grafting method is a modified cleft grafting: make a 3cm deep "T" shaped cut on the rootstock, cut the scion into a 2.5cm wedge shape on both sides, quickly insert the scion into the cut, and fix it with paraffin film;

[0064] Before grafting, the scions are soaked in a scion activity enhancement solution for 45 seconds, wrapped in a sterile damp cloth, and stored in a dark environment at 10°C. Grafting is completed within 2 hours. The scion activity enhancement solution contains the following raw materials in a final concentration with water as the solvent: 0.08 wt% indolebutyric acid, 0.2 wt% carbendazim, 4 wt% sucrose, and 0.3 wt% seaweed extract.

[0065] (3) After grafting, immediately cover the individual scion and interface with a three-layer composite moisture-retaining cover to maintain the temperature inside the moisture-retaining cover at 25±2℃ and the humidity at 87±2%RH.

[0066] The three-layer composite moisturizing cover consists of an inner elastic PO self-adhesive grafting film, a middle nanofiber moisturizing cotton pad, an outer PO light-transmitting film, and a bottom elastic sealing ring. The thickness of the moisturizing cover is 90μm, and the thickness ratio of the inner, middle, and outer layers is 1:2:1.

[0067] (4) After 30 days, remove the moisturizing cover, pinch off and shorten the scions with a length >20cm until there are 3 buds left on the scion; spray the scions with a length <15cm with a foliar fertilizer containing potassium dihydrogen phosphate and chelated boron and treat them in the dark to achieve a crown width difference of ≤15% and a survival rate of ≥92% for multiple varieties of scions on the same rootstock.

[0068] The foliar fertilizer contains the following raw materials in a final concentration using water as a solvent: 0.1 wt% potassium dihydrogen phosphate + 0.05 wt% chelated boron. The application rate of the foliar fertilizer is 15 mL per scion, the application frequency is 6 days / time, and the number of applications is 2.

[0069] (5) Disease and pest control methods are shown in Table 1:

[0070] Table 1

[0071] Pests and diseases Prevention and control agents Usage Frequency Gray mold Azoxystrobin 1500 times dilution Once every 10 days aphid Imidacloprid 2000 times dilution Spray as soon as you find it

[0072] 2. Technical Effects

[0073] Key metrics for this embodiment:

[0074] Table 2

[0075] index This application Existing technology Increase Multi-variety co-generation survival rate 95％ 62％ 53％↑ Germination rate of weak scions 90％ 40％ 125％↑ Interface mold rate 0 18％ 100％↓ Crown formation time (months) 5-10 12-14 Shortened by 40%↑ Scion water loss rate 2％ 9％ 78％↓

[0076] Callus formation rate: 98%, compared to 73% with existing technology, representing an increase of 34%;

[0077] Mold rate: 0%, superior to the existing technology's 18%;

[0078] Callus formation rate: The cambium layer fully fuses within 7 days after grafting (traditional methods require more than 14 days);

[0079] Interface wind resistance: The interface can withstand level 8 winds 60 days after grafting;

[0080] Multi-variety compatibility: The survival rate of weak varieties can be increased from 40% to over 90%, and the survival rate of the robust variety 'Golden Celebration' reaches over 95%;

[0081] Survival rate: 95%, superior to the existing technology's 62%, an improvement of 53%;

[0082] Variety carrying capacity: up to 8 plants, significantly higher than the existing technology of 3 plants, an increase of 166%;

[0083] Canopy balance rate: greater than or equal to 93%, which is better than the existing technology's 68%, representing an improvement of 36.8%;

[0084] Initial healing: 25-30 days (remove the moisturizing cover);

[0085] Crown shaping: 8-10 months (climbing roses) / 5-6 months (shrub roses), which is superior to the existing technology of 12-14 months and can save 40-50% of the time;

[0086] The scion water loss rate was 2%, which is better than the 9% of existing technologies, representing a reduction of 77.8%.

[0087] 3. Economic benefits: The market value of "multi-flowered" roses cultivated using this technology is 3 to 8 times that of ordinary single-variety roses.

[0088] Example 2

[0089] 1. Using a 4-year-old seedling of the Camellia cultivar 'Kremda Peony' with a trunk diameter of 6cm as rootstock, graft the following 5 different Camellia cultivars: 'Liexiang', 'Marian', 'Zuixiang', 'Xiangfei', and 'Chidan'.

[0090] (1) On February 5, 3 kg of decomposed organic fertilizer was applied to the radial trench of the camellia rootstock. The rootstock was girdled at a distance of 1.0 m from the ground, forming a girdled band 0.9 cm wide and deep to the xylem.

[0091] There are 5 radial trenches. The starting point of the radial trench is 30cm away from the base of the trunk, and the ending point of the radial trench is 30cm away from the drip line of the tree canopy. The depth of the radial trench gradually increases from the inside to the outside, with a depth of 20cm near the trunk and a depth of 40cm away from the trunk, forming a gentle slope.

[0092] (2) On March 25, grafting was performed 10cm above the girdling strip;

[0093] There are 6 grafting sites and 2 grafting layers. Each layer has 3 scions. The upper layer is 'Liexiang', 'Marian', and 'Zuixiang', and the lower layer is 'Zuixiang', 'Xiangfei', and 'Chidan'. The grafting sites in each layer are spaced 120° apart, and the distance between the grafting sites in two layers is 20cm.

[0094] The grafting method is a combination of inlay budding and side grafting. After grafting, a paraffin film is used for fixation.

[0095] The grafting design is shown in Table 3:

[0096] Table 3

[0097] type Rootstock treatment Scion treatment Bud grafting site U-shaped groove (2mm wide, 3mm deep) Shield-shaped bud (with 1cm of xylem) Abdominal contact point 30° bevel cut (1.5cm deep into the xylem) Carve it into a single-sided wedge shape (1.2cm long).

[0098] The scion used was a branch that was 7±1cm long and contained 2 plump buds;

[0099] Before grafting, the scions are soaked in a scion activity enhancement solution for 45 seconds, wrapped in a sterile damp cloth, refrigerated at 4°C, and grafting is completed within 4 hours. The scion activity enhancement solution contains the following raw materials in a final concentration using water as a solvent: 0.1 wt% indolebutyric acid, 0.5 wt% carbendazim, 4 wt% sucrose, and 0.2 wt% seaweed extract.

[0100] (3) After grafting, immediately cover the individual scion and interface with a three-layer composite moisture-retaining cover to maintain the temperature inside the moisture-retaining cover at 25±2℃ and the humidity at 87±2%RH.

[0101] The three-layer composite moisturizing cover consists of an inner elastic PO self-adhesive grafting film, a middle nanofiber moisturizing cotton pad, an outer PO light-transmitting film, and a bottom elastic sealing ring. The thickness of the moisturizing cover is 81μm, and the thickness ratio of the inner, middle, and outer layers is 1:2:1.

[0102] (4) After 30 days, remove the three-layer composite moisture cover, pinch off and shorten the scions with a length >20cm until there are 3 buds left on the scion; apply foliar fertilizer and treat the scions with a length <15cm with light protection.

[0103] The foliar fertilizer contains the following raw materials in a final concentration using water as a solvent: 0.05wt% potassium dihydrogen phosphate + 0.06wt% chelated boron. The amount of foliar fertilizer applied to each scion is 20mL, the application frequency is 7 days / time, and the number of applications is once.

[0104] (5) Disease and pest control methods are shown in Table 4:

[0105] Table 4

[0106]

[0107] 2. Technical effects:

[0108] Key metrics for this embodiment:

[0109] Survival rate: 93%;

[0110] Crown balance rate: 94%;

[0111] Economic benefits: The market value of "one tree with multiple flowers" camellias is 3 to 10 times that of ordinary varieties;

[0112] Initial healing: 35-40 days (remove the moisturizing cover);

[0113] Crown shaping: 14-16 months (24 months for traditional methods).

[0114] Economic benefits: The market value of "one tree with multiple flowers" camellias cultivated using this technology is 3 to 10 times that of ordinary single-variety camellias.

[0115] As can be seen from the above embodiments, the present invention provides a method for high-position grafting and synergistic growth regulation of woody flowers, including the following steps: 30-60 days before grafting, graded fertilization is carried out according to the diameter of the rootstock trunk, and girdling is completed simultaneously; from late February to mid-April, grafting is performed 5-10 cm above the girdled strip, and the scions are pre-soaked in a scion activity-enhancing solution for 30-60 seconds; immediately after grafting, a three-layer composite moisture-retaining cover is immediately installed to control the internal temperature at 24-26℃ and the humidity at 85-90% RH; 20-45 days later, the three-layer composite moisture-retaining cover is removed, and scions longer than 20 cm are pinched back to 2-3 buds, while scions shorter than 15 cm are sprayed with foliar fertilizer containing potassium dihydrogen phosphate and chelated boron and treated in the dark. The high-position grafting method of the present invention has the advantages of high survival rate and rapid landscaping, and can also achieve symbiosis of multiple varieties on a single plant, which can achieve the technical effect of improving the ornamental and economic value of woody flowers.

[0116] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for high grafting and synergistic growth regulation of woody flowers, characterized in that, The method comprises the following steps: (1) 30-60 days before grafting, fertilization is implemented according to the diameter of the main stem of the rootstock, and ring peeling is simultaneously completed; The fertilization method is as follows: when 3 cm≤diameter of main stem of rootstock≤5 cm, ring peeling width is 0.5-0.8 cm, and 1-3 kg of rotten organic fertilizer is applied in a ring ditch per plant; when 5 cm when diameter of main stem of rootstock>8 cm, ring peeling width is 0.8-1 cm, and 5-10 kg of rotten organic fertilizer is applied in a hole per plant; The ring peeling position is 1-1.5 m from the ground; (2) in the middle and late February to the early and middle April, grafting is implemented at 5-10 cm above the ring peeling zone, and the scion used is soaked in a scion active enhancer containing indole butyric acid, carbendazim, sucrose and seaweed extract for 30-60 s; (3) immediately after grafting, three layers of composite moisture retaining covers are set, the internal temperature is controlled to be 24-26 ℃, and the humidity is controlled to be 85-90 % RH; (4) after 20-45 days, the three layers of composite moisture retaining covers are removed, the scion with a length of more than 20 cm is pinched to 2-3 buds, the scion with a length of less than 15 cm is sprayed with a leaf fertilizer containing potassium dihydrogen phosphate and chelated boron and is treated in the dark, and the crown area difference of multiple varieties of scions on the same rootstock is less than or equal to 15 %, and the survival rate is greater than or equal to 92 %.

2. The method of claim 1, wherein, In step (1), the ring ditch is 20-30 cm away from the main stem, the depth of the ring ditch is 30-40 cm, and the width of the ring ditch is 10-15 cm; The number of the radial ditches is 4-6, the starting point of the radial ditch is 25-35 cm away from the base of the main stem, the ending point of the radial ditch is 20-40 cm outside the drip line of the crown, the depth of the radial ditch gradually increases from inside to outside, the depth near the main stem is 15-25 cm, and the depth far from the main stem is 35-45 cm, and the radial ditch is in the form of a gentle slope; The hole for applying the rotten organic fertilizer is 30-50 cm away from the drip line of the crown, the number of the holes is 4-6, the holes are evenly distributed around the main stem, and the depth of the holes is 40-50 cm.

3. The method of claim 2, wherein, In step (2), the grafting method is one or more of improved wedge grafting, embedded bud grafting, ventral grafting and skin grafting, the grafting joint shape is one of vertical wedge, T-shaped incision and oblique incision, and the grafting density is as follows: when the diameter of the main stem of the rootstock is 3-5 cm, the number of the scions is 3-4, and the grafting sites are distributed in one layer with an interval of 85-120°; when the diameter of the main stem of the rootstock is greater than 5 cm, the number of the scions is 5-8, the number of the layers of the grafting sites is 2-3, and the grafting sites in the same layer are distributed with an interval of 85-180°, and the distance between the grafting sites in two layers is 15-25 cm.

4. The method of claim 3, wherein, The specific method of the improved wedge grafting is as follows: a "T" shaped incision with a depth of 2-4 cm is formed on the rootstock, the scion is cut into a wedge with a length of 2-3 cm on both sides, the scion is quickly inserted into the incision, and the scion is fixed; the fixing material is an elastic rubber grafting film or a paraffin film.

5. The method of claim 1, wherein, The scion in step (2) is a 1-2 year old branch, the length of the scion is 5-12 cm, and the scion active enhancer solution contains the following final concentrations of raw materials in water: 0.05-0.1 wt% indole butyric acid, 0.1-0.5 wt% carbendazim, 2-5 wt% sucrose, and 0.2-0.4 wt% seaweed extract.

6. The method of claim 5, wherein, The three-layer composite moisturizing cover in step (3) is composed of an inner layer of elastic PO self-adhesive grafting film, a middle layer of nanofiber moisturizing cotton sheet, an outer layer of PO light transmission film, and a bottom elastic sealing ring, the thickness of the moisturizing cover is 80-100 μm, and the thickness ratio of the inner layer, the middle layer, and the outer layer is 1:2:

1.

7. The method of claim 6, wherein, The foliar fertilizer in step (4) contains the following final concentrations of raw materials in water: 0.05-0.15 wt% potassium dihydrogen phosphate and 0.04-0.06 wt% chelated boron, the application amount of the foliar fertilizer is 10-20 mL per scion, the application frequency of the foliar fertilizer is 5-7 d / time, and the application times of the foliar fertilizer is 1-3 times.

8. The use of the method of any one of claims 1-7 in improving the survival rate of woody flowers.

9. Use according to claim 8, characterized in that, The application method is: grafting ≥3 varieties on the same stock, the survival rate of each variety ≥90%, and the crown width balance rate ≥90%.

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