Strawberry cutting seedling raising method

Abstract

The application discloses a new strawberry cutting seedling raising method and belongs to the technical field of plant seedling raising. The strawberry cutting seedling raising method comprises the steps of seedling selection, suitable planting, strong seedling cultivation, cutting, post-cutting management and the like. The cutting is performed by cutting the creeping stems from mother seedlings, cutting off all the creeping stem stubs, disinfecting the creeping stems and then cutting the creeping stems. Meanwhile, during the cutting, the plug tray is horizontally placed, the seedling back arch side is directly pressed against the matrix at an angle of the seedling cultivation plug tray, and the seedling back arch side and the matrix form an angle of 45 degrees, so that the seedling back arch side is prevented from suddenly falling off in the upright state, and the cutting principle is that the following row or column is pressed against the previous row or column. The seedling raising method significantly improves the seedling emergence rate and survival rate of the strawberry cutting seedling raising, the developed roots of the cultivated strawberry seedlings are developed at one time, the seedling recovery time is short after the transplanting, the growth is rapid, and the yield and quality of the strawberries can be significantly improved. The method is simple in operation, low in cost, easy to popularize and apply to the strawberry planting technology, and helpful to promoting the development of the strawberry industry.

Description

Technical Field

[0001] This invention relates to the field of plant seedling technology, specifically to a novel method for strawberry propagation by cuttings. Background Technology

[0002] Currently, strawberry seedlings are mainly propagated using runners, and cuttings are a common method for vegetative propagation of runners. Cuttings offer advantages such as uniform seedling age, convenient operation and management, and time and labor savings. However, traditional cuttings leave a short stump when pruning the seedlings. This is done to prevent wound infection and to fix the strawberry seedling in the substrate with a fork. But this method has many drawbacks in practical application, such as low seedling rate, susceptibility to seasons and environments, relatively labor-intensive operation, low cutting efficiency, and the short stumps being highly susceptible to blackening due to various factors, ultimately leading to seedling disease and death. In addition, the placement of strawberry seedlings in the cutting container is uncertain, with some planted in the middle and others on the side, which can easily lead to differences in root development and inconsistent seedling quality. This fails to meet the growing market demand for high-quality strawberry seedlings and restricts the development of the strawberry industry. Summary of the Invention

[0003] To overcome the shortcomings of existing technologies, this invention provides a novel method for strawberry propagation by cuttings, which can improve the germination rate and seedling quality, increase the survival rate of cuttings, reduce seedling costs, and provide a large number of high-quality, robust seedlings for strawberry cultivation. Specifically, this invention adopts the following technical solution:

[0004] A method for strawberry propagation by cuttings according to the present invention includes the following steps:

[0005] (1) Seedling selection

[0006] Choose seedlings that have entered dormancy at low temperatures in substrate plug trays, preferably virus-free original seedlings with 3-5 functional leaves, a rootstock diameter of 0.5 cm or more, well-developed primary roots, and free from pests and diseases. The "0.5 cm or more" refers to choosing rootstocks that are relatively thick, at least 0.5 cm, and around 0.8 cm (0.6-0.9 cm) is ideal. Of course, the rootstocks in plug trays themselves will not be very thick.

[0007] (2) Planting at the appropriate time

[0008] The planting time should be advanced, with planting in January-February in southern regions and November-February in northern regions; the minimum temperature after planting should not be lower than -5℃ before warming management, and warming management should be carried out in February-March;

[0009] (3) Cultivating strong seedlings

[0010] By managing fertilizer and water and controlling pests and diseases, we can cultivate strong seedlings, promote early emergence of mother seedlings, and encourage the production of more and thicker runners.

[0011] (4) Cuttings

[0012] In late June or early July, cut runners from the mother seedlings and trim the tips. When trimming, cut the runners directly from the point near the shortened stem of the daughter seedlings. Then disinfect the runners with a compound disinfectant consisting of Bright Shield, Chunlei Quinoline Copper, and Abamectin to prevent various pests and diseases. Soak for 1-5 minutes, then drain the disinfectant before planting. Use seedling trays or nutrient pots for planting. Fill the substrate in advance and press it firmly to secure the seedlings. Moisten the substrate before planting. When planting, place the seedling tray horizontally, with the back of the seedling against one corner of the tray, pressing it directly into the substrate at a 40-50° angle to the substrate surface to prevent it from falling over. The principle for planting is that each row or column of cuttings should overlap the previous row or column.

[0013] (5) Post-cutting management

[0014] After the seedlings are propagated by cuttings, keep the air humid, spray water regularly, provide appropriate shade, and ensure that the daytime temperature does not exceed 25℃ and the air humidity is maintained at 70-90%. Gradually expose them to light after one week. After the cuttings have rooted and survived, maintain the substrate moisture at 60-70%, keep the greenhouse well-ventilated and well-lit, and ensure that the daytime maximum temperature does not exceed 28℃ and the air humidity is 50-70%.

[0015] (6) Controlling excessive growth before transplanting

[0016] Growth regulators are used to slow down the growth rate and thicken the leaves, and the seedlings are graded and then transplanted.

[0017] Step (1) Seedling selection: Seedlings that have undergone sufficient low-temperature dormancy in substrate-grown trays are preferred, ideally virus-free original seedlings, such as overwintering original seedlings in plug trays or overwintering plug tray seedlings. These seedlings exhibit strong resistance after transplanting, resulting in early and abundant germination. Traditional seedling cultivation does not explicitly specify the use of original seedlings, nor does it require the use of plug tray seedlings in terms of species or a specific number of leaves. Virus-free original seedlings are generally substrate-grown plug tray seedlings. After virus removal, these seedlings produce abundant and vigorous germination, and substrate seedlings recover quickly.

[0018] Step (2) When planting at the appropriate time, if you want more seedlings from cutting propagation, you must plant the seedlings in advance. In southern regions, planting is generally done in January-February, and in northern regions, it is done in November-February. The earliest planting time should not be earlier than November to avoid flowering and consuming its own nutrients. After planting, the minimum temperature should not be lower than -5℃, the daytime temperature should not be higher than 15℃ (10-13℃ is best), and the nighttime temperature should be kept between 0-5℃ to allow for low-temperature storage and root growth. In February-March, the temperature should be raised to around 25℃ (23-26℃) during the day and around 15℃ (14-16℃) at night. The planting method should be determined according to the root development. If the roots are too heavy, it is recommended to loosen the substrate before planting to facilitate rapid growth later. The traditional seedling planting period is generally February-March in southern regions and March-April in northern regions. This application requires planting earlier. At the same time, after transplanting, when the mother plant grows 2 new leaves and 1 new heart, remove the old and damaged leaves, always maintain the state of 4-5 leaves and 1 new heart, and promote the growth of runners. Traditional seedling methods do not require such treatment.

[0019] Step (3) When cultivating strong seedlings, after transplanting, through scientific fertilizer and water management and pest and disease control, strong seedlings are cultivated to promote early emergence of mother seedlings, the production of more and thicker runners, and to lay a good foundation for later cutting propagation. Here, traditional seedling cultivation methods can be followed, with rooting fertilizer and high-nitrogen fertilizer applied in the early stage of transplanting, balanced fertilizer applied in the middle stage, and silicon-calcium fertilizer applied in the later stage. Diseases to be controlled include anthracnose, angular leaf spot, blight, and powdery mildew, and pests to be controlled include two-spotted spider mites, aphids, and caterpillars.

[0020] Step (4) When pruning the cuttings, the runners should be cut off directly from the position close to the shortened stem of the seedling, leaving no short stump. That is, all the short stumps of the runners must be removed, whereas traditional seedling cultivation leaves about 5 cm of runner stump. After that, disinfect with disinfectant solution. The disinfectant solution is Bright Shield + Chunlei Quinoline Copper + Abamectin. Soak for 3 minutes, then take it out and drain the solution before cutting. Traditional seedling disinfection methods generally only use fungicides, while this application adds an acaricide to better prevent and control various diseases and pests. At the same time, because no short stump is left, the residual surface left after cutting can be better protected to prevent contamination by pathogens and affect growth.

[0021] In addition, 32-cell seedling trays are preferred for cuttings. The substrate should be filled into the trays in advance and pressed firmly to help secure the seedlings. The substrate should be moistened before cuttings are inserted. When inserting cuttings, place the trays horizontally, with the back of the seedling against one corner of the tray, directly into the substrate at a 45° angle to the substrate surface. This prevents the seedling from falling over while upright. The cuttings should be inserted from left to right and from top to bottom, with one row overlapping another, generally ensuring that the next row (or column) overlaps the previous row (or column). Traditional seedling cutting methods do not have this requirement. Furthermore, as described in this application, when inserting seedlings, the back of the cutting must be against one corner of the tray to promote primary root development and avoid root entanglement. The main components of the substrate are peat moss: vermiculite: perlite = 2-4:1:1, with 3:1:1 being the best. At the same time, some commonly used substrate insecticides, root rot prevention agents, etc. can also be added. In addition, before step (4) cutting, the daytime temperature should not exceed 30℃, preferably 25-28℃, the substrate humidity should be maintained at 60%-70%, and the air humidity should be maintained at around 50-70%.

[0022] Step (5) Post-cutting management: After the seedlings are cut, in order to maintain air humidity, non-woven fabric can be covered on the seedbed to keep it moist.

[0023] As a fruit with high economic value, the propagation efficiency and quality of strawberry seedlings are crucial to the development of the strawberry industry. Different planting times and cutting methods may affect the germination rate and survival rate of strawberry seedlings.

[0024] The beneficial effects of this invention are as follows:

[0025] 1. The seedling raising method of the present invention can significantly improve the germination rate and survival rate of strawberry cuttings. At the same time, the seedling raising method of the present invention does not retain the short stumps of the runners, which can effectively reduce seedling death caused by the blackening of the short stumps of the runners.

[0026] 2. The strawberry seedlings cultivated by the method of this invention have well-developed primary roots, a short recovery period after transplanting, and rapid growth, which can significantly improve the yield and quality of strawberries.

[0027] 3. The seedling raising method of the present invention is simple to operate, low in cost, and easy to promote and apply in strawberry planting technology, which helps to promote the development of the strawberry industry. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the stolons and short stumps structure; the short stumps are shown within the boxes.

[0029] Figure 2 This is a diagram showing the stumps after they have been cut off; the area within the box indicates the location of the stumps after they have been cut off.

[0030] Figure 3 This is a schematic diagram of the dorsal arch side structure of the seedling. The box on the left represents the dorsal arch side.

[0031] Figure 4 This is a diagram showing the position of the back arch side against one corner of the seedling tray during cutting.

[0032] Figure 5 This diagram illustrates the 45° angle between the cutting and the substrate plane during seedling propagation. Detailed Implementation

[0033] The following embodiments are further illustrations of the present invention and serve as explanations of the technical content of the present invention. However, the essence of the present invention is not limited to the embodiments described below. Those skilled in the art can and should know that any simple changes or substitutions based on the spirit of the present invention should fall within the protection scope claimed by the present invention.

[0034] Example 1

[0035] The specific method for strawberry propagation by cuttings is as follows:

[0036] 1. Seedling equipment

[0037] Mother seedlings can be planted in gallon pots, foam boxes, square pots, or cultivation troughs, ensuring good aeration and drainage to prevent root rot. Daughter seedlings should be planted in 32-cell trays or 40-cell seedling pots. Gallon pots should have a drainage hole diameter of at least 18 cm, and foam boxes, square pots, and cultivation troughs should be at least 15 cm wide. Mother seedlings can be planted in seedbeds or on raised platforms.

[0038] 2. Seedling raising method

[0039] Using the insertion method can reduce the occurrence of diseases.

[0040] 3. Matrix ratio

[0041] Peat moss:vermiculite:perlite = 3:1:1.

[0042] The peat moss in the substrate must be fully decomposed and free of weed seeds and pathogens. Insecticides and root rot preventatives are also typically added to the substrate.

[0043] 4. Matrix mixing

[0044] Before potting (or filling the pot), the substrate insecticide and root rot prevention agent (fungicide) need to be mixed evenly. During mixing, spray with appropriate moisture to facilitate later potting and thorough watering. The insecticide is bifenthiamethoxam granules, and the root rot prevention agent is azoxystrobin, oxadixyl, etc.

[0045] 5. Filling the substrate into pots (troughs)

[0046] Fill gallon pots (or troughs) with the mixed substrate, ensuring the pots are completely full. Then place them on the seedbed. Place the cultivation troughs on the seedbed beforehand, then fill them with substrate. Fill the substrate for the seedling containers before cuttings, and compact it slightly after filling to prevent excessive moisture loss later. Place them on the cutting bed after filling.

[0047] 6. Install drip irrigation tape

[0048] After the seedling trays are placed, install the drip irrigation tape with the drainage holes spaced 10 centimeters apart.

[0049] 7. Selection of Mother Seedlings (Seedlings)

[0050] For mother seedlings, it is best to select original seedlings from overwintering plug trays, especially original seedlings. It is not recommended to use old seedlings from fruiting plants (slow germination). Plug tray seedlings recover quickly and produce runners earlier. Whether original seedlings or seedlings, they must have 3-5 functional leaves, a rootstock diameter of approximately 0.8 cm, and a minimum of 0.6 cm (no less than 0.5 cm for original seedlings), a well-developed root system, whitish or slightly yellowish in color, free from rootstock diseases, and robust without excessive growth.

[0051] 8. Transplanting time of mother seedlings

[0052] For seedling propagation, the mother seedlings are transplanted from mid-November to mid-February into seedling trays in greenhouses. Early transplanting leads to early emergence and early control of excessive growth, preventing the occurrence of diseases during the high-temperature period, especially anthracnose and bacterial angular leaf spot, which are highly contagious and cause serious damage.

[0053] 9. Water the substrate before planting

[0054] Before planting, thoroughly water the substrate once.

[0055] 10. Planting

[0056] Grade the mother seedlings and plant them in different areas according to their size. It is not recommended to remove old leaves from the mother seedlings or dip their roots.

[0057] Planting density: 1 plant per gallon pot; for planting troughs, plant 20-25 cm apart, plant in single rows with a width of about 15 cm, or in double rows with a width of about 18 cm.

[0058] The stolons grow in the same direction as the arch, so when planting, the arch side should face the direction in which the stolons are being trained.

[0059] When transplanting, the mother plant should be placed in the center of the planting container. First, remove the substrate from the strawberry rootstock to expose the heart. Pinch off the lower part of the substrate and roots. If the root system is severely entangled, remove all the substrate before planting to facilitate the seedling's recovery. When planting, ensure the heart is not buried and the roots are not exposed to encourage the development of primary roots, shorten the recovery period, and promote plant growth.

[0060] After transplanting, the minimum temperature should not be lower than -5℃, the daytime temperature should not be higher than 15℃, and the nighttime temperature should ideally be kept between 0-5℃. This allows for low-temperature storage and promotes root growth and seedling development. In February and March, the temperature should be raised to around 25℃ (24-26℃) during the day and around 15℃ (14-16℃) at night.

[0061] 11. Watering

[0062] Immediately after transplanting, water thoroughly to help the seedlings recover and root.

[0063] 12. Root irrigation to promote root growth

[0064] The first root irrigation is carried out on the 5th day after planting, and the second root irrigation is carried out about 15 days after planting.

[0065] The root drenching agent mainly includes a higher fungicide and a blight agent. The formula is 1000 times dilution of Bright Shield + 1000 times dilution of Chunlei Quinoline Copper. Apply the solution in a circular motion to the roots. For the first root drenching, use 100 ml per plant, and for the second root drenching, use 150 ml per plant.

[0066] 13. Break leaves

[0067] When the mother plant has grown two new leaves and a bud, remove the old and damaged leaves. Choose a time with several consecutive sunny days to do this. Immediately after removing the leaves, apply pesticide or drench the roots. Afterward, perform this leaf-removal treatment once a month, always maintaining a state of 4-5 leaves and a bud to promote the growth of runners. When the seedlings have too many leaves, also remove them, retaining 3 leaves and a bud.

[0068] 14. Fertilizer and water management

[0069] Within one month of transplanting strawberry mother seedlings, the focus is mainly on promoting seedling establishment and root development. After half a month of warming, begin applying a large amount of fertilizer. In the early seedling stage, use high-nitrogen fertilizer. Within one month of transplanting, apply root-promoting fertilizer 1-2 times. In the middle stage, use a balanced fertilizer. In the later stage, stop using large amounts of fertilizer and focus on applying silicon-calcium products to enhance the plant's disease resistance. Apply water-soluble fertilizer every 2-3 days, maintaining an EC value of 0.8-1.0. Daughter seedlings do not require basal fertilization; only foliar fertilizer is needed. Water in the evening when the temperature is above 25℃; between 3-5 pm when the temperature is below 20-25℃; at midday when the temperature is between 15-20℃; before midday when the temperature is between 10-15℃; and before 10 am when the temperature is below 10℃. The lower the temperature, the earlier the watering should be, maintaining a water temperature close to the substrate temperature.

[0070] 15. Runner Management

[0071] All runners that emerge in the early stage of transplanting should be removed. Only after the plants have grown strong and the original species has more than 5 functional leaves and the seedlings have more than 4 functional leaves can the runners be retained.

[0072] 16. Cuttings

[0073] Cuttings are taken from late June to early July. Before taking cuttings, prepare the seedling trays or pots, trim the tops of the seedlings, and cut off the runners of each seedling directly at the point where the stem is shortened, leaving no short stub (e.g., Figure 2 Remove the smallest scale leaves, retaining a maximum of 3 leaves and 1 bud. Soak the trimmed seedlings in a sterilizing solution (62.5g / L Bright Shield 2000x + 36% Chunlei Quinoline Copper 2000x + 20% Abamectin Ethoxyfenozide 2000x) for 5 minutes, then remove and drain before planting. When planting, the root suckers should be just below the surface of the substrate; do not plant too deep and bury the bud. The main planting containers are 32-cell trays or 40-cell seedling pots. When planting, ensure the bud is slightly off-center from the center of the tray or pot to promote primary root germination and growth. Place the tray horizontally, with the seedling's back arched (e.g.,...). Figure 3 ) Place it directly into the substrate near one corner of the seedling tray (e.g. Figure 4 The seedling is at a 45° angle to the substrate plane (e.g.) Figure 5 ( ), to prevent lodging.

[0074] 17. Pest and disease control

[0075] Major diseases: anthracnose, bacterial angular leaf spot, and leaf spot.

[0076] Major insect pests: aphids, thrips, spider mites, and lepidopteran pests.

[0077] Refer to the strawberry common disease and pest control calendar for pesticide recommendations.

[0078] 18. Temperature and humidity management

[0079] Before cuttings are taken, maintain a daytime temperature not exceeding 30℃, substrate moisture at 60%-70%, and air humidity at around 60%. After cuttings are taken, a low-temperature, high-humidity, and shading treatment is required initially, with daytime temperatures below 25℃ and air humidity around 80%. Construct an arched greenhouse, covering it with plastic film and shade netting for the first week, spraying water 1-2 times daily. After one week, remove the shade netting. Within the next week, gradually uncover the plastic film, increasing the uncovering time until it is completely removed. One week after cuttings are taken, begin applying preventative pesticides every 7 days. After rooting and survival, maintain substrate moisture at 60-70%, ensure ventilation and light penetration within the greenhouse, and keep the daytime maximum temperature below 28℃. Air humidity should be around 60%.

[0080] 19. Controlling Prosperity

[0081] The principle of controlling excessive growth: light control in the early stage of seedling growth, moderate control in the middle stage, and heavy control in the later stage. Growth regulators include chlormequat chloride, tebuconazole, chlormequat chloride, triadimefon, PBO, calcium cyclamate, and tebuconazole, etc. Paclobutrazol is not recommended. Use only the types of growth regulators you are accustomed to using; don't follow trends blindly, prioritize safety and effectiveness. The purpose of controlling excessive growth is to slow down the growth rate without affecting the number of seedlings, thicken the leaves, make the plant more robust, and increase its resistance to adverse conditions.

[0082] 20. Seedling Management

[0083] Before leaving the nursery, the seedlings are cut and graded.

[0084] 21. Mother Seedling Management

[0085] After cutting, remove the mother plant along with the substrate from the greenhouse area. Then, seal the greenhouse with high temperature for more than 30 days.

[0086] 22. Strawberry seedlings leaving the nursery and transportation

[0087] Starting from late August, when most of the stolons meet the production seedling standards, they can be transplanted to production sites as needed. Production seedling standards: They should have at least 4 fully expanded leaves, with bright green leaves, thick and not excessively long petioles, a rhizome diameter of at least 0.8 cm, a well-developed root system with many thick, white fibrous roots, and be free from pests and diseases.

[0088] Arrange the seedlings neatly in the packaging box and pre-cool them in the cold storage for more than 12 hours. Then, add ice water bottles or ice packs to the strawberry seedlings and pack them into cardboard boxes or foam boxes. Finally, load them into a refrigerated truck for transportation or air freight.

[0089] Example 2

[0090] Experiment on the effects of different planting times and cutting methods on the number of seedlings and the survival rate of cuttings in strawberries.

[0091] 1. Test materials

[0092] Healthy seedlings of three strawberry varieties: Hongyan, Zhangji, and Xiangye.

[0093] 2. Test site

[0094] Xining City, Qinghai Province.

[0095] 3. Test methods

[0096] Seedlings of three varieties were transplanted onto seedling racks on February 15th and March 30th, 2024, with 50 seedlings of each variety transplanted at each time point. They were managed according to normal methods. Runners were taken for cuttings on June 30th. Before cuttings, the number of seedlings emerging from different varieties at different transplanting times was recorded. 1000 seedlings of each variety were selected, and 500 cuttings were taken using both conventional cuttings and short-stubble cuttings (as per this invention). The survival rate was recorded in late August.

[0097] 4. Experimental Results

[0098] Table 1. Effects of different planting times on seedling emergence number

[0099]

[0100] As shown in Table 1, all three varieties showed the highest seedling emergence rate when planted on February 15th. As planting time was delayed, the seedling emergence rate decreased significantly. Planting early on Hongyan increased the seedling emergence rate by 23%, early on Zhangji by 20%, and early on Xiangye by 26.7%. Early planting (February 15th) extended the strawberry growing season. The lower temperatures in the early stages promoted root growth and stem thickening. The suitable climate and environment in the middle stages led to rapid plant growth, resulting in a higher seedling emergence rate. As planting time was delayed, the growing season shortened, leading to a decrease in the seedling emergence rate. Therefore, the planting time significantly affected the strawberry seedling emergence rate, with around February 15th being the optimal planting date.

[0101] Table 2. Effects of different cutting methods on the survival rate of cuttings.

[0102]

[0103] As shown in Table 2, the survival rate of cuttings propagated by removing the short stump was higher than that of ordinary cuttings, and both exceeded 95%. Removing the short stump directly reduces the chance of disease infection by eliminating the susceptible short stump, thus increasing the survival rate. Therefore, the method of removing the short stump is superior to ordinary cuttings in improving the survival rate.

[0104] Comprehensive experiments have shown that different planting times and cutting methods have a significant impact on the emergence rate and survival rate of strawberries, while the seedling propagation method of this invention can achieve efficient propagation of strawberry seedlings.

[0105] It should be noted that the above-described technical content of this invention is merely an explanation and clarification to enable those skilled in the art to understand the technical essence of this invention, and therefore is not intended to limit the scope of protection of this invention. The scope of protection of this invention should be determined by the claims. Those skilled in the art should understand that any modifications, equivalent substitutions, and improvements made based on the essential spirit of this invention should be within the scope of protection of this invention.

Claims

1. A method for propagating strawberry seedlings by cuttings, comprising the following steps: (1) Seedling selection Select seedlings that have entered a low-temperature dormancy period in substrate plug trays, have 3-5 functional leaves, a rootstock diameter of more than 0.5 cm, well-developed primary roots, and are free from diseases and pests. (2) Planting at the appropriate time In southern regions, planting should be done in January or February, while in northern regions, planting should be done in November or February. After planting, the minimum temperature should not be lower than -5℃ before warming management begins. Warming management should begin in February or March. (3) Cultivating strong seedlings By managing fertilizer and water and controlling pests and diseases, we can cultivate strong seedlings, promote early emergence of mother seedlings, and encourage the production of more and thicker runners. (4) Cuttings In late June or early July, cut runners from the mother plantlet and trim the tips. When trimming, cut the runners directly from the point close to the shortened stem of the daughter plantlet, leaving no short stub. Afterward, soak them in a disinfectant for 1-5 minutes, then drain and insert them into the substrate. Use seedling trays or nutrient pots for cuttings, and moisten the substrate in advance. When inserting the cuttings, place the seedling tray horizontally, and press the back of the daughter plantlet, with the arched side close to one corner of the seedling tray, directly into the substrate at a 40-50° angle to the substrate surface. (5) Post-cutting management After the seedlings are propagated by cuttings, keep the air humid, spray water regularly, provide appropriate shade, and ensure that the daytime temperature does not exceed 25℃ and the air humidity is maintained at 70-90%. Gradually expose them to light after one week. After the cuttings have rooted and survived, maintain the substrate moisture at 60-70%, keep the greenhouse well-ventilated and well-lit, and ensure that the daytime maximum temperature does not exceed 28℃ and the air humidity is 50-70%. (6) Controlling excessive growth before transplanting Growth regulators are used to slow down the growth rate and thicken the leaves, and the seedlings are graded and then transplanted.

2. The strawberry cutting propagation method as described in claim 1, characterized in that, The seedlings described in step (1) have undergone sufficient low-temperature dormancy.

3. The strawberry cutting propagation method as described in claim 1, characterized in that, Step (2) Before the temperature rise management after planting, the daytime temperature should not be higher than 15℃ and the nighttime temperature should be between 0-5℃.

4. The strawberry cutting propagation method as described in claim 1, characterized in that, Step (2) After transplanting, when the mother plant has grown 2 new leaves and 1 new heart, remove the old and damaged leaves and always maintain the state of 4-5 leaves and 1 new heart to promote the growth of stolons.

5. The strawberry cutting propagation method as described in claim 1, characterized in that, The fertilizer and water management in step (3) involves applying rooting fertilizer and high-nitrogen fertilizer in the early stage of planting, applying balanced fertilizer in the middle stage, and applying silicon-calcium fertilizer in the later stage.

6. The strawberry cutting propagation method as described in claim 1, characterized in that, The disinfectant used in step (4) is a compound agent consisting of Bright Shield, Chunlei Quinoline Copper, and Abamectin.

7. The strawberry cutting propagation method as described in claim 1, characterized in that, The matrix in step (4) includes peat moss, vermiculite and perlite, with a weight composition of peat moss:vermiculite:perlite = 2-4:1:

1.

8. The strawberry cutting propagation method as described in claim 7, characterized in that, The substrate also includes substrate insecticides and root rot prevention agents.

9. The strawberry cutting propagation method as described in claim 1, characterized in that, Step (4) The principle of the cutting order is that the next row or column overlaps the previous row or column.

10. The strawberry cutting propagation method as described in claim 1, characterized in that, Step (4) Before cutting, keep the daytime temperature no more than 30℃, the substrate humidity at 60%-70%, and the air humidity at 50-70%.

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