Potting method for primula ovalis

Abstract

The invention discloses a potting method of primula ovalis. The potting method comprises the following steps: S1, introduction and domestication: wild primula ovalis seeds or plants are cultivated in a breeding base in a high-temperature and low-altitude area to be domesticated and cultivated for more than 5 years; s2, seed collection: collecting mature seeds of primula ovalis subjected to introduction and domestication, and cleaning and storing the mature seeds; s3, seed pretreatment; s4, sowing and earthing; s5, maintenance in the seedling emergence period: in the seedling emergence period, the substrate and the seeds are kept in a wet state until unearthed green seedlings are seen; s6, maintenance in a vegetative growth stage; s7, flowering period maintenance: placing the flowerpot in a shady, cool and ventilated place, keeping the culture medium moist, and after flowering, topdressing an organic fertilizer; s8, overwintering maintenance of the potted seedlings: applying an overwintering fertilizer once before overwintering; s9, repotting: repotting 2-3 years later, placing a new pot in a shady, cool and ventilated place, and performing conventional maintenance 2 weeks later; by means of the method, potting of the wild primula ovalis is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of plant cultivation, and in particular to a potting method of Primula ovata. Background Art

[0002] Primula ovalifolia Franch. is a perennial herbaceous flower in the genus Primula of the family Primulaceae. It has excellent ornamental value and great development potential. It is mainly distributed in subalpine areas such as western Hubei (Xingshan and Changyang), western Hunan (Longshan and Sangzhi), Chongqing (Daba Mountains, Jinfo Mountains, etc.), Sichuan (Baoxing, Wawu Mountains, Emei Mountains, etc.), Guizhou (Fanjing Mountains) and northeastern Yunnan in China, growing under forests and in the shade of valleys.

[0003] At home and abroad, most primroses have been growing in alpine or subalpine environments for a long time. If systematic introduction and cultivation research is not carried out, these primroses from the cold subalpine environment will usually die due to "water and soil incompatibility" after being introduced to warm and hot areas at low altitudes.

[0004] Currently, researchers have introduced and cultivated over ten species of wild primroses under greenhouse conditions, including Primula vulgaris (Sichuan), Primula rouge, Primula shaanxiensis, Primula oleracea (Szechwan), Primula chinensis (Shaanxi), Primula oleracea (Chitosan), Primula truncatula (Limestone), Primula truncatula (Sea Dwarf), Primula eclipta (Paraphylla), Primula campanula (Paraphylla), Primula multivenca (Paraphylla), and Primula truncatula (Yellow). However, these wild primroses were simply introduced and never cultivated in pots, allowing them to enter the homes of ordinary people. In other words, current techniques for the introduction and cultivation of wild primroses are fragmented, lacking integrated potted cultivation techniques that can be widely adopted.

[0005] Moreover, there has been no relevant research report on the introduction and cultivation technology of Primula ovata, and there is no conventional potting technology for Primula ovata. Summary of the Invention

[0006] In view of the defects in the prior art, the object of the present invention is to provide a potting method for Primula ovata.

[0007] The technical solution adopted in the present invention is:

[0008] A potting method of Primula ovata, comprising the following steps:

[0009] S1. Introduction and domestication: Cultivate the seeds or plants of wild Primula ovata in a breeding base in a high-temperature, low-altitude area and domesticate and cultivate them for more than 5 years;

[0010] S2. Seed collection: collecting mature seeds of Primula ovata that have been introduced and domesticated, cleaning them and preserving them;

[0011] S3. Seed pretreatment: When the temperature rises to between 20°C and 25°C, soak the seeds in 50-200 mg / L gibberellin solution for 48 hours;

[0012] S4, sowing and covering: sowing the pretreated seeds in a flowerpot filled with a cultivation medium, and covering the seeds with the cultivation medium;

[0013] S5. Maintenance during the emergence period: During the emergence period, keep the substrate and seeds moist. Spray 100 mg / L gibberellin solution once every 3 to 5 days until green seedlings emerge.

[0014] S6. Maintenance during the vegetative growth stage: Place the flower pot in a bright place, avoid direct sunlight, cool it down when the temperature is too high, keep the cultivation medium moist and fertilize;

[0015] S7. Maintenance during flowering period: Place the flower pot in a cool and ventilated place and keep the cultivation medium moist. After flowering, apply organic fertilizer;

[0016] S8. Winter maintenance of potted seedlings: Apply winter fertilizer once before wintering;

[0017] S9. Repotting: Repot after 2 to 3 years and place the new pot in a cool and ventilated place. Perform routine maintenance after 2 weeks.

[0018] Furthermore, before step S7, the method further includes promoting the early flowering period: in the second year, after the plant grows new leaves, spraying the plant with a gibberellin solution with a concentration of 0.5-1 mg / L twice.

[0019] Furthermore, in step S1, the introduced Primula vulgaris is cultivated in sandy soil under a 2-meter-high shade net with a shading rate of 75%; in summer, water is sprayed every morning and evening to reduce the temperature; every 7 days, the soil is loosened and weeded once; every 3 months, organic fertilizer and tea cake fertilizer are applied once, 50 kg / mu; and 50% cypermethrin is sprayed once in March and May respectively to prevent the occurrence of gray mold.

[0020] Furthermore, in step S2, the mature seeds of Primula ovata that have been introduced and domesticated are collected, cleaned and preserved, specifically:

[0021] S21. In mid-May, collect mature fruits from Primula ovata populations cultivated at the breeding base, separate the seeds, and remove the empty seeds;

[0022] S22, placing the seeds obtained in step S21 in a dry room for 2 days, maintaining a temperature of 15°C to 25°C and a relative humidity of 60% to 80%;

[0023] S23. Put the dried seeds into paper envelopes or plastic ziplock bags and store them in a sealed environment at -20℃.

[0024] Furthermore, in step S4, the cultivation medium is sandy soil, a mixture of peat soil and vermiculite, peat soil or humus soil, wherein the ratio of the mixture of peat soil and vermiculite is: the volume ratio of peat soil to vermiculite is 3:1.

[0025] Furthermore, in step S4, the amount of the cultivation substrate is 3 / 4 to 4 / 5 of the volume of the flower pot, and the thickness of the cultivation substrate covering the seeds is less than 1 cm.

[0026] Furthermore, in step S5, the amount of gibberellin solution sprayed on each pot is 40 to 60 ml.

[0027] Furthermore, in step S6, after the seedlings have grown for 35 days, the leaves are sprayed with a urea aqueous solution once at a concentration of 0.5-1 g / L; after the plants have grown for 40-50 days, the leaves are sprayed with a paclobutrazol aqueous solution once at a concentration of 1-2 mg / L.

[0028] Furthermore, in step S7, after flowering, 3 to 5 grams of chicken manure or 2 to 5 grams of cake fertilizer are applied per pot, and after fertilization, 200 to 400 milliliters of water are applied.

[0029] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. DETAILED DESCRIPTION

[0030] The following embodiments of the technical solution of the present invention are described in detail. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are therefore only used as examples and are not intended to limit the scope of protection of the present invention.

[0031] It should be noted that, unless otherwise specified, the technical or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0032] A potting method of Primula ovata, comprising the following steps:

[0033] S1. Introduction and domestication: Cultivate the seeds or plants of wild Primula ovata in a breeding base in a high temperature and low altitude area for domestication and cultivation for more than 5 years.

[0034] Specifically, wild Primula ovata was introduced from Jinfo Mountain in Nanchuan, Chongqing, at an altitude of 1700 to 1960 meters, and then cultivated at the Chongqing Normal University Biological Plant Breeding Base in Shapingba District, Chongqing, where the altitude is 256 meters.

[0035] In Chongqing's main urban area, winters are dry and cold, while summers are hot and humid. The introduced Primula vulgaris is cultivated in sandy soil under a shade net approximately two meters high, providing 75% shading. In summer, water is sprayed every morning and evening to reduce temperatures. The soil is loosened and weeded every seven days. Organic fertilizer and camellia oil cake fertilizer are applied once every three months at a rate of 50 kg per mu. 50% cypermethrin is sprayed once in March and again in May to prevent gray mold. After more than five years of domestication and cultivation, the breeding base has acquired a large number of Primula vulgaris plants, allowing for the annual collection of seeds.

[0036] The process of artificially cultivating wild Primula ovata under certain conditions for many years so that it can grow and develop normally in the breeding base is called introduction and domestication.

[0037] Domestication is the most crucial step in enabling potted cultivation of Primula ovata at low altitudes. Over five years of domestication, the plant experienced a transition from a high mortality rate (67%) to full adaptation. After five years of domestication, the annual mortality rate of these domesticated Primula ovata plants is less than 5%, and their flowering period is approximately 20 days earlier than that of wild populations. Flower size and color are similar to those of wild populations, while plant size and scape height are significantly superior to those of wild plants.

[0038] S2. Collect seeds: Collect mature seeds of Primula ovata that have been introduced and domesticated, clean them and preserve them.

[0039] Specifically, the following steps are included:

[0040] S21. In mid-May, mature fruits were collected from the Primula ovata population cultivated at the breeding base, the seeds were separated manually, and the empty seeds were removed under a microscope.

[0041] S22. The seeds obtained in step S21 are placed in a room and dried for 2 days, maintaining a temperature of 15° C. to 25° C. and a relative humidity of 60% to 80%.

[0042] S23. Put the dried seeds into paper envelopes or plastic ziplock bags and store them in a sealed environment at -20℃. In this environment, they can be stored for 48 months and the germination rate of the seeds is still as high as 61%.

[0043] S3. Seed pretreatment: In areas in southern my country with an altitude of less than 600 meters, from late February to early March, when the temperature rises to between 20℃ and 25℃, take out the preserved seeds and thaw them, and soak the seeds in 50-200 mg / L gibberellin solution for 48 hours.

[0044] In southern my country, where the altitude is below 600m, sowing can be done in late February. When the temperature exceeds 25℃, sowing is not suitable, because the seeds of Primula ovata are difficult to germinate at temperatures above 25℃.

[0045] S4. Sowing and Covering: Sow the pretreated seeds in pots filled with growing medium. Cover the seeds with the growing medium to a thickness of less than 1 cm. Primula ovata seeds are light-sensitive, and covering with soil thicker than 1 cm significantly reduces germination or even prevents germination.

[0046] The cultivation medium is sandy soil, a mixture of peat soil and vermiculite, peat soil or humus soil.

[0047] The ratio of the mixture of peat soil and vermiculite is: the volume ratio of peat soil to vermiculite is 3: 1. Humus soil needs to be sterilized.

[0048] In step S4, the amount of the cultivation medium is 3 / 4 to 4 / 5 of the volume of the flower pot, so as to leave space for watering and fertilizing.

[0049] You can use plastic or ceramic pots, regardless of shape or material. Typical sizes are 10-20 cm in diameter and 10-30 cm in height. Sow 5-10 seeds in each pot. After sowing, cover the seeds with a planting medium less than 1 cm thick. Water thoroughly. Place the pot in a bright location, but avoid direct sunlight.

[0050] S5. Seedling Care: The period from sowing to seedling emergence is called the seedling emergence period. During this period, keep the substrate and seeds moist. Spray 100mg / L gibberellin solution once every 3-5 days, with a spraying amount of 40-60ml per pot. Generally, green seedlings can be seen emerging from the soil after 7-12 days.

[0051] S6. Maintenance during the vegetative growth stage: Place the flower pot in a bright place, avoid direct sunlight, cool it down when the temperature is too high, keep the cultivation medium moist and apply fertilizer.

[0052] The vegetative growth stage refers to the entire period before the ovate primrose blooms. During this stage, the following aspects should be noted:

[0053] (1) Light management: Place the flower pot in a bright place, but avoid direct sunlight.

[0054] (2) Temperature management. When the daytime temperature is higher than 35℃ and the nighttime temperature is higher than 25℃, the growth of Primula ovata is slow and may even be killed by the high temperature. Therefore, appropriate cooling is required in hot weather.

[0055] (3) Water management: Spray water once every 3-4 days, 40-100 ml / pot, to keep the culture medium moist and avoid root rot caused by overwatering.

[0056] (4) Fertilization. After the seedlings have grown for 35 days, the leaves have fully developed. At this time, you can spray the leaves with a urea aqueous solution once, with a concentration of 0.5-1g / L, to promote leaf growth. After the plants have grown for 40-50 days, you can spray the leaves with a paclobutrazol aqueous solution (with a concentration of 1-2mg / L) once to promote strong plant growth and increase the number of flowers.

[0057] S7. Maintenance during flowering period: Place the flower pot in a cool and ventilated place and keep the cultivation medium moist. After flowering, apply organic fertilizer.

[0058] Typically, a flower stalk begins to develop in mid-March of the following year, reaching a height of about 5-6 cm. Gradually, several flower buds appear on the stalk. As the flowers grow and bloom, the stalk gradually grows taller, reaching a height of 20 cm. Each stalk contains 2-9 small flowers with purple or bluish-purple corollas. Peak flowering occurs from late March to mid-April. During this flowering period, the growing medium should be kept moist and the plant should be protected from direct sunlight. The plant should be placed in a cool, well-ventilated area.

[0059] After flowering, a small amount of organic fertilizer (chicken manure or cake fertilizer) should be applied to promote growth. The fertilizer can be soybean cake, tea cake, or peanut cake. Apply 3-5 grams of chicken manure or 2-5 grams of cake fertilizer per pot. After fertilizing, water the pot with 200-400 milliliters of water. Chicken manure and cake fertilizer release nutrients slowly, resulting in high fertilizer efficiency.

[0060] S8. Winter care of potted seedlings: Apply winter fertilizer once before wintering.

[0061] Specifically, in October to November, some leaves of the potted primrose turn yellow gradually, and only a few leaves are green. At this time, apply a wintering fertilizer superphosphate in an amount of 2 to 4 grams per basin, water it (300 to 600 milliliters), and maintain it according to the method described in steps S5 to S7.

[0062] S9. Repotting: Repot after 2 to 3 years and place the new pot in a cool and ventilated place. Perform routine maintenance after 2 weeks.

[0063] Repot the plant every 2-3 years. Choose a pot based on the size of the Primula ovata plant. Choose a pot that's approximately one-third larger than the plant's canopy size. When repotting, it's best to use one-third old soil and two-thirds new soil, along with additional fertilizer. The soil should fill approximately three-fourths to four-fifths of the pot's total volume. "Soil" here refers to the "growing medium." Cake fertilizer (such as peanut cake or tea cake) is best, at a rate of 2-5 grams per pot. Compound fertilizer is also recommended, at a rate of 1-3 grams per pot. After repotting, the soil must be compacted to prevent holes from forming after watering, which could hinder root absorption. After adding fertilizer, water the plant at 300-500 ml per pot, starting from the outer edges of the foliage. Place the new pot in a cool, well-ventilated area. After two weeks, resume normal care. Cultivate the plant according to the above techniques. Sow once and it can be grown in pots for three to four years.

[0064] Before step S7, the method further includes promoting the early flowering period: in the second year, after the plant grows new leaves, spraying the plant with a gibberellin solution with a concentration of 0.5-1 mg / L twice, which can advance the flowering period of the potted Primula vulgaris by 15-20 days.

[0065] Using the above method, the present invention proposes, for the first time, collecting seeds from an introduced and domesticated population of Primula ovata and using these seeds to propagate seedlings. In the cultivation area, the domesticated Primula ovata seeds may have undergone significant changes in physiology and molecular mechanisms. Seedlings grown from these seeds are well suited for potted planting and exhibit good ecological adaptability in the low-altitude areas of Chongqing.

[0066] 2. The present invention proposes for the first time the preservation of mature seeds at -20°C. Under low temperature conditions of -20°C, the vitality of the seeds can be effectively maintained. The method of sealing and preserving seeds at -20°C is called freeze-drying. Before sowing, seeds that have been freeze-dried for 1 to 48 months are soaked in a 200 mg / L gibberellin (GA3) solution for 48 hours, maintaining a germination rate of 61 to 83%; the suitable germination temperature is 20°C to 25°C (Table 1). It can be seen that the seeds of Primula ovata can be preserved at -20°C for up to 4 years, with the advantages of simple operation, low cost, fast germination, and a high and uniform germination rate.

[0067] Table 1 Seed germination rate (%) after treatment with gibberellin (GA3) for 48 hours at 20-25°C

[0068]

[0069] Note: After 12 months of storage at room temperature and low temperature (0-7°C), the germination rate of Primula ovata seeds ranged from 23% to 35%, with a significant loss of vigor. 0 mg / L, that is, soaking in distilled water, is the control group.

[0070] If the seeds are stored at 4°C or room temperature, they will almost lose their vitality after 12 months and will not germinate normally.

[0071] 3. The present invention also proposes that the emergence rate (%) of Primula ovata seeds in different substrates is significantly affected by the substrate coverage depth (cm) (Table 2). Among them, in the four types of substrates, when the coverage thickness is less than 1 cm, seedlings can emerge in 7 to 8 days, and the emergence rate is 80% to 100%.

[0072] Table 2 Effect of substrate coverage depth on germination rate (%) on different cultivation substrates

[0073]

[0074]

[0075] Note: (A) sandy soil, (B) mixture of peat soil and vermiculite (peat soil: vermiculite = 3:1, volume ratio), (C) peat soil; (D) humus soil.

[0076] 4. This invention also integrates management measures for light, water, and fertilization during the vegetative growth phase of Primula ovata for the first time. In addition to protecting seedlings from direct sunlight, the cultivation medium must be kept moist and fertilized appropriately. Furthermore, spraying the plant growth regulator paclobutrazol (at a concentration of 1-2 mg / L) can promote stronger plant growth and increase flowering.

[0077] 5. The present invention further proposes measures for managing Primula ovata during and after flowering. During flowering, the cultivation medium should be kept moist, and the flowerpot should be placed in a cool, ventilated area. After the flowers wither, organic fertilizer (chicken manure or cake fertilizer) should be applied to the medium; after fertilization, water the plant. Fertilizing after flowering helps Primula ovata replenish nutrients consumed during flowering.

[0078] 6. The present invention also proposes a specific method for applying winter fertilizer: from October to November, superphosphate is applied to the substrate at a dosage of 1 to 3 grams per pot, and 200 to 400 ml of water is used to ensure that the plants can better survive the winter.

[0079] 7. The present invention also proposes maintenance measures to promote early flowering. In early February, when the plant grows new leaves, spraying the leaves with GA3 solution at a concentration of 0.5-1 mg / L can advance the flowering period by 15-20 days.

[0080] 8. The present invention proposes a method for repotting Primula ovata. When repotting, use 1 / 3 of old soil and add 2 / 3 of new soil in a new pot of suitable size, but the potting soil occupies 3 / 4 to 4 / 5 of the total volume of the pot, leaving space for watering and fertilizing. The "soil" is actually the "cultivation medium". After watering thoroughly, place it in a cool and ventilated place for rest, and then carry out routine maintenance after 2 weeks. Since organic fertilizer cake fertilizer or compound fertilizer is added to the "soil", no fertilizer is needed within 2 months, but it can be applied later according to actual conditions. The principle of watering is "don't water unless the soil is dry".

[0081] In this embodiment, the calculation formulas for seed germination rate (%) and seedling rate (%) are as follows:

[0082] Seed germination rate (%) = number of germinated seeds / total number of test seeds × 100%

[0083] Seedling emergence rate (%) = number of seedlings emerged / total number of germinated seeds × 100%

[0084] The gibberellin (GA3), paclobutrazol, peat soil, and vermiculite used in the experiment were all purchased. The humus soil was collected from the surface soil (depth ≤ 10 cm) of a Masson pine forest, which is very common in southern my country. Before use, the humus soil needed to be sterilized by mixing carbendazim into the humus soil, mixing thoroughly, and composting for at least 7 days before use. The dosage of carbendazim was: 30 grams of carbendazim per 100 kilograms of humus soil.

[0085] Peat soil is Danish imported Pins peat soil, purchased from Taobao.

[0086] The vermiculite has a coarseness of 1 to 3 mm and is purchased from the manufacturer.

[0087] The compound fertilizer was purchased from a manufacturer with the brand name Garsili, produced by Garsili (Yingcheng) Fertilizer Co., Ltd., with a total nutrient content of ≥51%.

[0088] Urea was purchased from the manufacturer, produced by Ruixing Group, with total nitrogen (N) ≥ 46%.

[0089] Superphosphate was purchased from a manufacturer (Yunnan Yuntianhua Co., Ltd.), and the available phosphorus (calculated as P2O5) was ≥16%.

[0090] Paclobutrazol (commonly known as "chlormequat") was Guoguang brand, with an active ingredient content of 15%, produced by Sichuan Guoguang Agrochemical Co., Ltd. and purchased from Taobao. Gibberellic acid (commonly known as "920") was also purchased from Taobao. It had an active ingredient content of 75% and was produced by Jiangxi Xinruifeng Biochemical Co., Ltd.

[0091] In this application, unless otherwise specified or limited, the terms "connected," "connected," "fixed," and the like should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; they may refer to direct connection or indirect connection through an intermediate medium; they may refer to internal communication between two elements or interaction between two elements. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0092] In the description of the present invention, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, systems, and techniques are not shown in detail so as not to obscure the understanding of this description.

[0093] In the description of this specification, the reference terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, systems, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, systems, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0094] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. A potting method for Primula ovata, characterized in that: The steps include: S1. Introduction and domestication: Cultivate the seeds or plants of wild Primula ovata in a breeding base in a high-temperature, low-altitude area for more than 5 years; S2. Seed collection: collecting mature seeds of Primula ovata that have been introduced and domesticated, cleaning them and preserving them; S3. Seed pretreatment: When the temperature rises to between 20°C and 25°C, soak the seeds in 50-200 mg / L gibberellin solution for 48 hours; S4, sowing and covering: sowing the pretreated seeds in a flower pot filled with a cultivation medium, and covering the seeds with the cultivation medium; S5. Maintenance during the emergence period: During the emergence period, keep the substrate and seeds moist. Spray 100 mg / L gibberellin solution once every 3 to 5 days until green seedlings emerge. S6. Maintenance during the vegetative growth stage: Place the flower pot in a bright place, avoid direct sunlight, cool it down when the temperature is too high, keep the cultivation medium moist and fertilize; S7. Maintenance during flowering period: Place the flower pot in a cool and ventilated place and keep the cultivation medium moist. After flowering, apply organic fertilizer; S8. Winter maintenance of potted seedlings: Apply winter fertilizer once before wintering; S9. Repotting: Repot after 2 to 3 years and place the new pot in a cool and ventilated place. Perform routine maintenance after 2 weeks.

2. The potting method of Primula ovata according to claim 1, characterized in that: The following steps are also included: Before step S7, the method further includes promoting the early flowering period: in the second year, after the plant grows new leaves, spraying the plant with a gibberellin solution with a concentration of 0.5-1 mg / L twice.

3. The potting method of Primula ovata according to claim 1, characterized in that: In the step S1, the introduced Primula vulgaris is cultivated in sandy soil under a 2-meter-high shade net with a shading rate of 75%; in summer, water is sprayed every morning and evening to reduce the temperature; every 7 days, the soil is loosened and weeded once; every 3 months, organic fertilizer and tea cake fertilizer are applied once, 50 kg / mu; and 50% prochlorperazine is sprayed once in March and May respectively to prevent the occurrence of gray mold.

4. The potting method of Primula ovata according to claim 1, characterized in that: In step S2, the mature seeds of Primula ovata that have been introduced and domesticated are collected, cleaned and preserved, specifically: S21. In mid-May, collect mature fruits from Primula ovata populations cultivated at the breeding base, separate the seeds, and remove the empty seeds; S22, placing the seeds obtained in step S21 in a dry room for 2 days, maintaining a temperature of 15°C to 25°C and a relative humidity of 60% to 80%; S23. Put the dried seeds into paper envelopes or plastic ziplock bags and store them in a sealed environment at -20℃.

5. The potting method of Primula ovata according to claim 1, characterized in that: In step S4, the cultivation medium is sandy soil, a mixture of peat soil and vermiculite, peat soil or humus soil, wherein the ratio of the mixture of peat soil and vermiculite is: the volume ratio of peat soil to vermiculite is 3:

1.

6. The potting method of Primula ovata according to claim 1, characterized in that: In step S4, the amount of the cultivation substrate is 3 / 4 to 4 / 5 of the volume of the flower pot, and the thickness of the cultivation substrate covering the seeds is less than 1 cm.

7. The potting method of Primula ovata according to claim 1, characterized in that: In step S5, the amount of gibberellin solution sprayed on each pot is 40 to 60 ml.

8. The potting method of Primula ovata according to claim 1, characterized in that: In step S6, after the seedlings have grown for 35 days, the leaves are sprayed with a urea aqueous solution at a concentration of 0.5-1 g / L. After the plants have grown for 40-50 days, the leaves are sprayed with a paclobutrazol aqueous solution at a concentration of 1-2 mg / L.

9. The potting method of Primula ovata according to claim 1, characterized in that: In step S7, after flowering, 3 to 5 grams of chicken manure or 2 to 5 grams of cake fertilizer are applied to the pot. After fertilization, 200 to 400 milliliters of water are applied.

10. The potting method of Primula ovata according to claim 1, characterized in that: In step S8, the wintering fertilizer is superphosphate, the dosage is 2 to 4 grams per pot, and 300 to 600 milliliters of water are used.

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