Method for accurately regulating and controlling flowering phase of potted chimonanthus praecox to appear on market in Spring Festival

Abstract

The invention discloses a method for regulating and controlling the flowering phase of potted chimonanthus praecox to accurately appear on the market in the Spring Festival. The method comprises the following steps: preparing before warehousing; warehousing the potted plants; warehousing management; delivering the potted plants from a warehouse; and selling potted plants. According to chimonanthus praecox varieties with different flowering periods, through comprehensive technical measures such as different out-storage and in-storage low-temperature refrigeration treatment time, small-amount heating and cooling treatment and reasonable water and fertilizer management, the flowering period of the potted chimonanthus praecox is effectively delayed, flowering in the spring festival is accurately achieved, the huge market demand of flowering in the lunar year is met, and the market prospect is wide. The chimonanthus praecox can be in the best flowering state during the Spring Festival, the ornamental time is long, the fragrance is rich, the chimonanthus praecox is delightful, and the problem that the traditional potted chimonanthus praecox is difficult to sell as a flower for the lunar year due to the fact that the flowering phase is different from that of the Spring Festival is effectively solved; the device is easy and convenient to operate and manage, high in controllability and practicability, small in occupied space, relatively low in energy consumption, capable of effectively guaranteeing product quality and good in economic benefit, and refrigeration can be carried out in multiple layers.

Description

Technical Field

[0001] The present invention relates to the field of regulating the flowering period of potted wintersweet, and in particular to a method for regulating the flowering period of potted wintersweet to accurately achieve the flowering period during the Spring Festival. Background Art

[0002] Wintersweet [Chimonanthus preacox (Linn.) Link] is a unique traditional precious ornamental flower and tree native to my country. It has unique grace, rich fragrance and exotic charm. It has excellent ornamental value, precious cultural value, high medicinal and economic value. It is an excellent material for landscaping and cut flowers, and is very popular among citizens.

[0003] In recent years, with the advent of miniature potted wintersweet plants, their much longer flowering period than vase-mounted cut flowers and their highly ornamental beauty have made them popular among locals, driving prices high. Unfortunately, however, most miniature potted plants have already finished or are nearing their end of bloom during the Spring Festival in the Chengdu-Chongqing region, significantly diminishing their ornamental value and fragrance, often becoming discounted or even completely non-existent. This makes them unable to meet the huge demand for Spring Festival flowers. To address this bottleneck, a five-year, systematic study of various early-flowering (e.g., 'Happy Flower Fragrance,' 'Early Red,' 'Crazy Butterfly,' etc.), mid-flowering (e.g., 'Joyful,' 'Golden,' etc.), and late-flowering (e.g., 'Announcement of Spring,' 'Sunset,' etc.) varieties has been conducted. The result is a method for precisely regulating the flowering period of potted wintersweet plants to ensure they are available for Spring Festival.

[0004] In addition, most of the currently cultivated varieties are early-flowering varieties, with bright colors, strong fragrance, and good overall ornamental value, which better meet the public's aesthetic taste and the needs of the potted plant market. Medium-flowering varieties are second, and late-flowering varieties are even third. The three varieties of medium- and late-flowering varieties have slightly inferior flower colors, but their fragrance and flower density are better, and are also very popular with the public. Therefore, the flowering period regulation of early, medium, and late varieties can be selected to better meet the different needs of the public. In addition, early-flowering varieties have a relatively long refrigeration period, consume relatively more energy, and have higher refrigeration costs. Medium-flowering varieties are second, and late-flowering varieties have the shortest and least refrigeration period.

[0005] Therefore, in order to solve the technical problems that have long restricted the development of the industry, such as the flowering period of traditional potted wintersweets in Chengdu-Chongqing area does not coincide with the Spring Festival, especially the excellent early-flowering wintersweets with large and colorful flowers, strong fragrance and high overall ornamental value, but the flowering period ends completely before the Spring Festival, and the mid- and late-flowering varieties basically enter the late flowering period or decline period during the Spring Festival, with poor overall ornamental value, weak fragrance, and difficulty in being sold as New Year flowers, the present invention proposes a technical solution that effectively delays the flowering period of potted wintersweets, accurately achieves flowering during the festival (Spring Festival), meets the huge market demand for New Year flowers, and enables early, mid- and late-flowering wintersweets to show the best flowering state during the Spring Festival, and has a long viewing time, strong fragrance and pleasing appearance. Summary of the Invention

[0006] In view of this, the present invention provides a method for regulating the flowering period of potted wintersweet to accurately achieve the market launch during the Spring Festival.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0008] A method for regulating the flowering period of potted wintersweet to accurately meet the market demand during the Spring Festival, comprising the following steps:

[0009] Step 1: Preparation before storage

[0010] Apply humic acid fertilizer uniformly 7 days before storage, and apply potassium dihydrogen phosphate liquid fertilizer 1 day before;

[0011] Step 2: Store potted plants in storage

[0012] Choose a fruit and vegetable fresh-keeping warehouse and determine the appropriate storage time;

[0013] Step 3: Inventory Management

[0014] Place it in an area where it cannot be directly exposed to cold winds and apply liquid fertilizer of N-P2O5-K2O (10-20-20) every half month;

[0015] Step 4: Potted plants shipped out

[0016] Determine the time for shipment. Place the crops in a cool, sheltered place after shipment. Apply a mixture of potassium dihydrogen phosphate and humic acid fertilizer in a timely manner after a period of buffering. After a period of time, maintain the crops under normal lighting conditions and apply additional fertilizer.

[0017] Step 5: Potted Plants for Sale

[0018] Sales will start 5 days before the Spring Festival. Some plants that bloom earlier can be selected in the first two days, and concentrated large-scale sales will be carried out in the last three days.

[0019] Preferably, in step 1, 5‰ humic acid fertilizer is uniformly applied once 7 days before storage, and 3‰ potassium dihydrogen phosphate liquid fertilizer is applied once again 1 day before storage.

[0020] Preferably, in step 2, the cold storage is usually a fruit and vegetable fresh-keeping storage with a temperature of 2-4° C. and a relative humidity of 80-90%.

[0021] Preferably, in step 2, the storage time is: the storage time for early-flowering varieties with an initial flowering period in late November is November 8-12, the storage time for early-flowering varieties with an initial flowering period in early December is November 15-19, the storage time for medium-flowering varieties with an initial flowering period around December 15 is November 23-27, the storage time for medium-flowering varieties with an initial flowering period around December 20 is December 1-5, and the storage time for late-flowering varieties is December 7-11. The storage time fluctuates due to climate changes in the year. If the temperature is higher in autumn and winter, the storage time will be advanced. Otherwise, it will be postponed. Normally, the storage time will be an intermediate day.

[0022] Preferably, in step 3, if direct blowing of cold wind cannot be avoided, the layered rack can be covered with a layer of film of more than 6s or a simple film shed can be temporarily built.

[0023] Preferably, in step 3, 1.5‰ N-P2O5-K2O (10-20-20) liquid fertilizer is applied once every half month.

[0024] Preferably, in step 4, the delivery time is calculated according to the specific time of the Spring Festival each year, usually 15-16 days in advance, and after delivery, the products are placed in a cool and windproof place or in a greenhouse with 70% sunshade.

[0025] Preferably, in step 4, after 48 hours of buffering and adaptation before shipment, a "2‰ potassium dihydrogen phosphate + 1.5‰ humic acid" mixed liquid fertilizer is promptly applied once, and after 7 days of normal light maintenance, the mixed liquid fertilizer is applied once more.

[0026] Preferably, in step 4, if the weather is cold or without sunshine after the warehouse is released, the greenhouse can be heated by a hot air blower or hot steam about 8 days in advance to maintain the temperature in the greenhouse at 10-15°C during the day and 3-5°C at night to promote flowering. The sales standards can be fully met three days before the Spring Festival. The daily heating time and the number of heating days can be flexibly controlled according to the daily weather conditions and the degree of opening of the potted flowers. If the weather is hot or sunny, attention should be paid to ventilation and shading to reduce the temperature to avoid premature flowering. At the same time, the flowers can also be released from the greenhouse for early sale.

[0027] Preferably, in step 5, the flowers are preferably 5-10% open when sold.

[0028] Compared with the prior art, the present invention has achieved the following technical effects:

[0029] (1) The present invention is directed to wintersweet varieties with different flowering periods. By adopting comprehensive technical measures such as different low-temperature refrigeration treatment times for storage and entry, a small amount of cooling treatment, and reasonable water and fertilizer management, the flowering period of potted wintersweet is effectively delayed, and flowering is accurately achieved during the Spring Festival. The huge market demand for New Year flowers is met, and early, mid-, and late-flowering wintersweet varieties can all show the best flowering state during the Spring Festival, and the viewing time is long, the fragrance is strong, and the flowers are pleasing to the eye.

[0030] (2) The present invention effectively solves the problem that the flowering period of traditional potted wintersweet in Chengdu and Chongqing is not in time with the Spring Festival, particularly the fine early-flowering wintersweet, which has large and bright flowers, strong fragrance and high overall ornamental value, but the flowering period ends completely before the Spring Festival, and the mid- and late-flowering improved varieties also basically enter the blooming late stage or the decaying stage during the Spring Festival, and the overall ornamental value is not good enough, and the fragrance is also lighter and difficult to be used as the technical bottleneck of the long-term restriction industry development sold as New Year flowers;

[0031] (3) The present invention is easy to operate and manage, has strong controllability and practicality, can be placed in multiple layers for refrigeration, occupies a small space, has relatively low energy consumption, effectively guarantees product quality, and has good economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is the flowering effect diagram of the 'Happy Flower Fragrance' (stored in cold storage on November 17, 2023) on the eighth day of the first lunar month in 2024 of the present invention;

[0033] Figure 2 This is a comparison of the flowering effects of the 'Announcement of Spring' plant (stored in cold storage on December 9, 2023) on the 15th day of the first lunar month in 2024 of the present invention and untreated plants;

[0034] Figure 3 This is the flowering effect diagram of the 'Happy Flower Fragrance' on New Year's Eve 2025 of the present invention;

[0035] Figure 4 This is the flowering effect diagram of the Spring Festival in 2025 of the present invention;

[0036] Among them, A is 20 days after the release of "Happy Flower Fragrance"; B is 25 days after the release of "Crazy Butterfly";

[0037] Figure 5 This is a diagram showing the effect of the scale of cold storage during the Spring Festival flowering of the present invention;

[0038] Among them, A is 2023; B is 2024;

[0039] Figure 6 This is a diagram of the flowering status of the 'Happy Flower Fragrance' of the present invention at different storage times 7 days after leaving the warehouse (February 3, 2024);

[0040] Among them, A: October 28, 2023; B: November 7, 2023; C: November 17, 2023; D: November 27, 2023; E: December 7, 2023;

[0041] Figure 7 This is the temperature change graph from November 2022 to February 2023 of the present invention;

[0042] Figure 8 This is the temperature change graph from November 2023 to February 2024 of the present invention;

[0043] Figure 9 This is the temperature change diagram from November 2024 to February 2025 of the present invention. DETAILED DESCRIPTION

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0045] The present invention discloses a method for regulating the flowering period of potted wintersweet to accurately meet the requirements for the Spring Festival, comprising the following steps:

[0046] Step 1: Preparation before storage

[0047] Apply 5‰ humic acid fertilizer once 7 days before storage to improve the plants' drought and cold resistance and reduce the damage that may be caused to the plants during low-temperature storage in the later stage; apply 3‰ potassium dihydrogen phosphate liquid fertilizer once more one day before storage to improve stress resistance and ensure that the plants have sufficient nutrients and water before storage;

[0048] Step 2: Store potted plants in storage

[0049] Cold storage is usually a fruit and vegetable fresh-keeping warehouse with a temperature of 2-4℃ and a relative humidity of 80-90%. Seed storage is not selected because a long period of relative humidity of ≤60% can easily cause the wintersweet to drop its flowers and buds. When entering the warehouse, the buds of the potted wintersweet are formed and expanded, but the leaves of the plant have not fallen. The labor cost of picking leaves is high and it is easy to knock off the buds or break the branches, affecting the later viewing effect. If the leaves are not picked and stored, it will be in a dark environment for a long time and cannot carry out photosynthesis to accumulate nutrients while respiration is still going on, which can easily cause nutrient deficiency. In addition, the longer the cold storage time, the higher the energy consumption cost. Therefore, how to find a more suitable storage time is one of the important influencing factors of this patent. The research team used early flowering (initial flowering period from late November to December 10), mid-flowering (December 11 to December 25), and late flowering (December 26) (After) Wintersweet varieties, after years of storage trials by batch and variety, the following results were obtained: early-flowering varieties (such as 'Zaohong') with the first flowering period in late November are usually stored between November 8th and 12th. Early-flowering varieties (such as 'Xingfu Huaxiang' and 'Kuangdie') with the first flowering period in early December are usually stored between November 15th and 19th. Medium-flowering varieties (such as 'Huantianxidi') with the first flowering period around December 15th are usually stored between November 23rd and 27th. Medium-flowering varieties (such as 'Huangjin') with the first flowering period around December 20th are usually stored between December 1st and 5th. Late-flowering varieties (such as 'Baochun') are usually stored between December 7th and 11th. The storage time fluctuates slightly due to climate changes in the year. If the temperature is high in autumn and winter, the storage time will be slightly earlier. Otherwise, it will be slightly delayed. Normally, the storage time will be between the two dates.

[0050] Step 3: Inventory Management

[0051] Place it in an area where cold wind cannot blow directly. If direct cold wind cannot be avoided, cover the layered rack with a layer of film of more than 6s or temporarily build a simple film shed. Otherwise, long-term cold wind will easily cause the flower buds to lose water or even fall off. Apply 1.5‰ N-P2O5-K2O (10-20-20) liquid fertilizer once every half month to replenish nutrients and water to achieve a balance. Otherwise, it will easily cause the flower buds to fall off or the flowers to become smaller in the later stage.

[0052] Step 4: Potted plants shipped out

[0053] The storage time is calculated based on the specific time of the Spring Festival every year. It is usually shipped out 15-16 days in advance. After shipping out, it is placed in a cool and windproof place or in a greenhouse with a shade of about 70%. It is best to maintain it in a greenhouse to ensure a certain temperature to avoid nighttime low temperature frost damage, and it is also beneficial to the uniformity of flowering; after 48 hours of buffering and adaptation after shipping out, timely apply a "2‰ potassium dihydrogen phosphate + 1.5‰ humic acid" mixed liquid fertilizer. Fertilization is too early and the plants are not well absorbed during the buffer period. Too late is not conducive to the expansion of flower buds and the opening of flowers. Adding humic acid fertilizer not only has a high phosphorus and potassium content itself, but also helps promote the plant's absorption of other fertilizers, and can more effectively guarantee the supply of phosphorus and potassium fertilizers during the flowering process to ensure the brightness of the flower colors. After 7 days, maintain it under normal light and apply the mixed liquid fertilizer once. The buds usually swell and turn color about 7 days after leaving the warehouse, and flowers begin to bloom after 12 days. On New Year's Eve, 5-10% of the flowers of most potted plants are in bloom, reaching the early flowering stage. The best time to enjoy the flowers is during the Spring Festival - the peak flowering stage. The late flowering stage is in mid-to-late February. The flowering period is shortened in air-conditioned rooms, so the plants should not be placed near air-conditioning outlets.

[0054] If the temperature remains low or there is no sunshine after the plant is shipped out, the greenhouse can be heated by a hot air blower or hot steam about 8 days in advance to maintain the temperature at 10-15°C during the day and 3-5°C at night to promote flowering. The flowers can fully meet the sales standards three days before the Spring Festival. The daily heating time and the number of heating days can be flexibly controlled according to the daily weather conditions and the degree of opening of the potted flowers. If the temperature remains high or there is sunshine, attention should be paid to ventilation and shading to reduce the temperature and avoid premature flowering. The flowers can also be shipped out of the greenhouse for early sale.

[0055] Step 5: Potted Plants for Sale

[0056] Sales will start 5 days before the Spring Festival. Some plants that bloom earlier can be selected in the first two days, and concentrated large-scale sales will be carried out in the last three days.

[0057] Example 1:

[0058] From November 2022 to January 2023, a study was conducted on the flowering effects of different types of wintersweet varieties, including early-flowering varieties ('Early Red', 'Happy Flower Fragrance', and 'Crazy Butterfly'), medium-flowering varieties ('Happy', and 'Gold'), and late-flowering variety 'Primordial Spring'), in and out of cold storage. The optimal flowering rate was 5-10% on New Year's Eve. The results are shown in Tables 1-3.

[0059] It can be seen that the optimal treatments for early-flowering varieties are "warehoused on November 10th and 17th, and shipped 16 days before Chinese New Year's Eve" and "warehoused on November 17th, and shipped 12 days before Chinese New Year's Eve"; for medium-flowering varieties, "warehoused on November 24th and December 1st, and shipped 16 days before Chinese New Year's Eve" and "December 1st, and shipped 12 days before Chinese New Year's Eve"; and for late-flowering varieties, "warehoused on December 1st, and shipped 20 days before Chinese New Year's Eve" and "warehoused on December 8th, and shipped 16 days before Chinese New Year's Eve" are the optimal treatments. Based on the principle of minimum energy consumption (i.e., shortest refrigeration time), there is only one late-flowering variety, and it is not affected by the variety. Excluding "warehoused on December 1st, and shipped 20 days before Chinese New Year's Eve," the optimal treatment is "warehoused on December 8th, and shipped 16 days before Chinese New Year's Eve."

[0060] There are three early-flowering varieties (one with the first flowering period in late November and two in early December) and two medium-flowering varieties (one around December 15 and one around December 20). The flowering times vary greatly. Based on the above-obtained optimal treatments, the flowering rates of varieties with different flowering periods were further investigated and analyzed separately. Combined with the principle of minimum energy consumption, it was finally concluded that the best treatment for early-flowering varieties with the first flowering period in late November is "warehoused on November 10 and shipped out 16 days before New Year's Eve"; the best treatment for early-flowering varieties with the first flowering period in early December is "warehoused on November 17 and shipped out 16 days before New Year's Eve"; the best treatment for medium-flowering varieties with the first flowering period around December 15 is "warehoused on November 24 and shipped out 16 days before New Year's Eve"; and the best treatment for medium-flowering varieties with the first flowering period around December 20 is "warehoused on December 1 and shipped out 16 days before New Year's Eve".

[0061] Table 1: Effects of different storage and delivery times on flowering of early-flowering wintersweets (2022-2023)

[0062]

[0063] Table 2: Effects of different storage and delivery times on flowering of medium-flowering wintersweets (2022-2023)

[0064]

[0065] Table 3: Effects of different storage and delivery times on flowering of late-flowering wintersweets (2022-2023)

[0066]

[0067]

[0068] Example 2:

[0069] From November to December 2023, for wintersweet varieties with different flowering periods ('Early Red', 'Happy Flower Fragrance', 'Joyful', 'Gold', and 'Spring Report'), according to the different storage times in Table 1-5, apply 5‰ humic acid fertilizer once 7 days before entering the cold storage, and apply 3‰ potassium dihydrogen phosphate liquid fertilizer once 1 day before entering the storage. Then put them into the cold storage according to different storage times, 5 pots for each treatment, and repeat 3 times to avoid cold wind blowing directly on the flowers. Apply 1.5‰ N-P2O5-K2O (10-20-20) liquid fertilizer once every half month. They will be shipped out of the warehouse on January 26, 2024. First, place the wintersweet potted plants in a cool and sunny place. After 48 hours, apply 2‰ potassium dihydrogen phosphate + 1.5‰ humic acid mixed liquid fertilizer once, and manage them with normal light management after 7 days.

[0070] The average flowering rate, total flowering days, and average flower diameter at peak flowering were calculated for the period from the time of shipment (January 26, 2024), the seven days before the Spring Festival (February 3, 2024), New Year's Eve (February 9, 2024), the seventh day of the first lunar month (February 16, 2024), the fifteenth day of the first lunar month (February 24, 2024), and the twenty-ninth day of the first lunar month (March 1, 2024). The results are shown in Table 4-8. (The initial flowering period is defined as a flowering rate of 5% ≤ < 25%, the peak flowering period is defined as a flowering rate of 25% ≤ < 75%, and the final flowering period is defined as a flowering rate of 75% or higher. The flowering period ends when 85% of the flowers wilt. The total flowering days are the sum of the days between a flowering rate of 5% or higher and a wilting of less than 85%. If the flowering rate is 5% or higher at shipment, the period is calculated from the shipment date, i.e., the first day of the flowering period. The same applies below.)

[0071] The flower buds of the first and second batches of various varieties of potted wintersweets that were stored in the warehouse had not yet expanded or had just entered the expansion stage, resulting in slow flowering after being released from the warehouse, especially in the early stage (before the fifteenth day of the first lunar month). In the later stage, due to the increase in temperature, the flowering period was shortened and quickly entered the final flowering stage. Moreover, the flower diameter was significantly smaller than that of the flowers stored in the third batch and later. However, the potted plants stored in the fourth and fifth batches had entered the flowering process, so most of the flowers opened quickly after being released from the warehouse and soon reached the peak flowering stage. The shelf life was short and the total flowering period was short. Therefore, the third batch had the best storage time, that is, 'Early Red' was November 10, 'Happy Flower Fragrance' was November 17, 'Joyful' was November 25, 'Gold' was December 3, and 'Spring Report' was December 9.

[0072] Table 4: Effects of different storage times on flowering of 'Zaohong' (2023-2024)

[0073]

[0074] Table 5: Effects of different storage times on the flowering of 'Happiness Flower Fragrance' (2023-2024)

[0075]

[0076] Table 6: Effects of different storage times on flowering of 'Huan Tian Xi Di' (2023-2024)

[0077]

[0078] Table 7: Impact of different storage times on the flowering of 'gold' (2023-2024)

[0079]

[0080]

[0081] Table 8: Effects of different storage times on flowering of 'Primrose' (2023-2024)

[0082]

[0083] Example 3:

[0084] From November to December 2024, cultivars of wintersweet with different flowering periods ('Early Red', 'Happy Flower Fragrance', 'Joyful', 'Gold', and 'Spring Report') were cold-stored using the same method as at the end of 2023. They were also released from storage 15 days before the Spring Festival. The average flowering rate on New Year's Eve (January 28, 2025) and the average flower diameter at peak flowering were calculated. The start of the first flowering period (the number of days from storage to the first day of the first flowering period), the start of the peak flowering period (the number of days from storage to the first day of the peak flowering period), the start of the last flowering period (the number of days from storage to the first day of the last flowering period), the end of the flowering period (the number of days from storage to the last day of the flowering period), and the total number of flowering days (the number of days from the first day of the first flowering period to the end of the flowering period) were also calculated for different batches. The results are shown in Tables 9-13.

[0085] The storage time at the end of 2024 is similar to that at the end of 2023. Although the Spring Festival in 2025 is 12 days earlier than that in 2024, that is, the processing time in the cold storage at the end of 2024 is shortened by 12 days compared with the processing time in the cold storage at the end of 2023, the flowering effect after leaving the warehouse is similar to that at the end of 2023. The best effect is still to put "Early Red" into storage around November 11, "Happy Flower Fragrance" into storage around November 18, "Joyful" into storage around November 25, "Gold" into storage around December 2, and "Spring Report" into storage around December 9.

[0086] Table 9: Effects of different storage times on flowering of 'Zaohong' (2024-2025)

[0087]

[0088] Table 10: Effects of different storage times on the flowering of 'Happiness Flower Fragrance' (2024-2025)

[0089]

[0090] Table 11: Effects of different storage times on flowering of 'Happy' (2024-2025)

[0091]

[0092] Table 12: Impact of different storage times on the flowering of "gold" (2024-2025)

[0093]

[0094] Table 13: Effects of different storage times on flowering of 'Primrose' (2024-2025)

[0095]

[0096]

[0097] The above description is merely a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A method for regulating the flowering period of potted wintersweet to accurately achieve the listing of the Spring Festival, characterized in that: The following steps are involved: Step 1: Preparation before storage Apply humic acid fertilizer uniformly 7 days before storage, and apply potassium dihydrogen phosphate liquid fertilizer 1 day before; Step 2: Store potted plants in storage Choose a fresh-keeping warehouse for fruits and vegetables and determine the appropriate storage time; Step 3: Inventory Management Place it in an area where it cannot be directly exposed to cold winds and apply liquid fertilizer of N-P2O5-K2O (10-20-20) every half month; Step 4: Potted plants shipped out Determine the time for shipment. Place the crops in a cool, sheltered place after shipment. Apply a mixture of potassium dihydrogen phosphate and humic acid fertilizer in a timely manner after a period of buffering. After a period of time, maintain the crops under normal lighting conditions and apply additional fertilizer. Step 5: Potted Plants for Sale Sales will start 5 days before the Spring Festival. Some plants that bloom earlier can be selected in the first two days, and concentrated large-scale sales will be carried out in the last three days.

2. A method for regulating the flowering period of potted wintersweet to accurately reach the Spring Festival listing according to claim 1, characterized in that, In the step 1, 5‰ humic acid fertilizer is uniformly applied once 7 days before storage, and 3‰ potassium dihydrogen phosphate liquid fertilizer is applied once again 1 day before storage.

3. A method for regulating the flowering period of potted wintersweet to accurately reach the Spring Festival listing according to claim 1, characterized in that, In step 2, the cold storage is usually a fruit and vegetable fresh-keeping storage with a temperature of 2-4° C. and a relative humidity of 80-90%.

4. A method for regulating the flowering period of potted wintersweet to accurately reach the Spring Festival listing according to claim 1, characterized in that, In step 2, the storage time is as follows: the storage time for early-flowering varieties with an initial flowering period in late November is November 8-12, the storage time for early-flowering varieties with an initial flowering period in early December is November 15-19, the storage time for medium-flowering varieties with an initial flowering period around December 15 is November 23-27, the storage time for medium-flowering varieties with an initial flowering period around December 20 is December 1-5, and the storage time for late-flowering varieties is December 7-11. The storage time fluctuates due to climate changes in the year. If the temperature is high in autumn and winter, the storage time will be advanced. Otherwise, the storage time will be postponed. Normally, the storage time will be taken between the two days.

5. A method for regulating the flowering period of potted wintersweet to accurately reach the Spring Festival listing according to claim 1, characterized in that, In step 3, if direct cold wind cannot be avoided, the layered rack can be covered with a layer of film of more than 6s or a simple film shed can be temporarily built.

6. A method for regulating the flowering period of potted wintersweet to accurately reach the Spring Festival listing according to claim 1, characterized in that, In the step 3, apply 1.5‰ N-P2O5-K2O (10-20-20) liquid fertilizer once every half month.

7. A method for regulating the flowering period of potted wintersweet to accurately reach the Spring Festival listing according to claim 1, characterized in that, In step 4, the storage time is calculated based on the specific time of the Spring Festival each year, usually 15-16 days in advance. After being released from the warehouse, it is placed in a cool and windproof place or in a greenhouse with 70% sunshade.

8. A method for regulating the flowering period of potted wintersweet to accurately reach the Spring Festival listing according to claim 1, characterized in that, In the step 4, after 48 hours of buffering and adaptation, apply a mixed liquid fertilizer of "2‰ potassium dihydrogen phosphate + 1.5‰ humic acid" in time, and after 7 days of normal light maintenance, apply the mixed liquid fertilizer once more.

9. A method for regulating the flowering period of potted wintersweet to accurately reach the Spring Festival listing according to claim 1, characterized in that, In step 4, if the temperature remains low or there is no sunshine after the plant is shipped out, the greenhouse can be heated by a hot air blower or hot steam about 8 days in advance to maintain the temperature in the greenhouse at 10-15°C during the day and 3-5°C at night to promote flowering. The sales standards can be fully met three days before the Spring Festival. The daily heating time and the number of heating days can be flexibly controlled according to the daily weather conditions and the degree of opening of the potted flowers. If the temperature remains high or there is sunshine, attention should be paid to ventilation and shading to reduce the temperature to avoid premature flowering. The plant can also be shipped out of the greenhouse for early sale.

10. A method for regulating the flowering period of potted wintersweet to accurately reach the market during the Spring Festival according to claim 1, characterized in that, In step 5, it is best if the flowers are 5-10% open when sold.

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