CN101731131A - Potted peony forcing culture storage method - Google Patents

Abstract

The invention provides a storage method for promoting the cultivation of potted peony. The storage method includes the steps of taking seedlings and placing them in pots, digging pits, laying a thermal insulation layer, covering soil, and promoting flowering. The storage method is used to facilitate the cultivation of potted peonies. , can reduce the imbalance of flower and leaf ratio, few new roots and poor development of new roots. Moreover, since the storage method utilizes the natural low temperature in winter to break the dormancy of the peony, and uses renewable environmental protection materials to insulate the underground part of the peony, it can realize the facilitation cultivation of the potted peony while saving energy.

Description

A kind of storage method of promoting cultivation of potted peony

technical field

The present invention relates to the storage method of plant, more specifically, the present invention relates to the storage method of potted peony.

Background technique

Peony (Paeonia suffruticosa Andr) belongs to the Paeoniaceae (Paeoniaceae) plant of the genus Paeonia (Paeonia). It is native to the mountainous areas of Qinling and Daba Mountains in western my country. Its flowers and leaves are shaped like peony, so it is also called wood peony.

The peony has a beautiful body, huge flowers, beautiful colors and rich colors. It is known as the "king of flowers" and "the flower of wealth". It is a symbol of beauty, happiness, auspiciousness and wealth. Peonies can be planted in special gardens in parks and scenic spots; in classical gardens and residential courtyards, planted on flower beds; in gardens and green spaces, they can be planted naturally in isolation, clusters or in patches. It is also suitable for arranging flower borders, flower beds or flower belts, or potted plants, and is very flexible in application. The root bark can be used as medicine, and the petals can be used to make wine. It can be said that each organ of peony has important economic value.

There are many cultivars of peony, and according to preliminary statistics, there are more than 800 in the country. The flowering period of peonies is concentrated, and the natural flowering period is generally in the middle and late April of each year, and the viewing period is only about 20 days. After flowering, the flower buds generally begin to differentiate in May and are basically completed in September. After the low temperature in winter, the dormancy is released, and the flowering will continue in the next year. During this period, the peony buds must be fully released from dormancy to grow and develop normally. Whether the dormancy can be fully released is often a necessary condition for the plant to bloom normally.

As mentioned above, the natural flowering period of peonies is relatively short, and it is difficult to meet the needs of various festival flowers. For example, if the flowering period is not controlled, there will be no blooming peonies in the market during the National Day and Spring Festival. In order to allow the peony to bloom according to the scheduled flowering time, usually after the differentiation of the peony flower buds is completed in September, dormancy is released through artificially controlled environments such as cold storage, so that the flowering period of the peony can be advanced or delayed.

As mentioned above, the traditional cultivation of peony is mostly treated with low temperature in cold storage, but the storage in cold storage has the following problems: 1) The temperature in the cold storage is not uniform, which leads to uneven cooling of peony plants; 2) The roots do not grow well and it is difficult to germinate Roots, flowering mainly rely on old root nutrition, often cause plant death after flowering; 3) mosaic and leaf ratio imbalance (such as "there are flowers but no leaves" phenomenon); and 4) energy consumption is large.

The inventors found that only the buds of peonies need low-temperature treatment to break dormancy, and the roots do not need such low-temperature treatment, so when low-temperature treatment is used to break dormancy, the above-ground and underground parts can be subjected to different temperature conditions . In other words, while the shoots in the aerial part are subjected to a low temperature environment, the roots in the underground part are subjected to a higher temperature than said low temperature, so that the roots are protected from damage caused by the low temperature, thereby overcoming the prior art the problems mentioned above.

Contents of the invention

In order to solve one or more of the above-mentioned problems, the present invention provides the following embodiments.

1. A storage method for promoting potted peonies for cultivation, said storage method comprising the steps of:

In the first step, the peony plant is planted in the flowerpot with the cultivation substrate;

Step 2, digging a storage pit, and filling the first insulation layer at the bottom of the storage pit;

In the third step, the flower pots are put into the storage pit, and thermal insulation materials are filled between the flower pots;

In the 4th step, a second insulation layer is covered on the flowerpot;

In the 5th step, a plastic film is covered on the second insulation layer, and the branches of the peony plant are stretched out by digging holes in the plastic film;

Step 6, covering the plastic film with a soil layer;

In the seventh step, after 30 to 80 days, the flower pots are taken out and moved into the greenhouse for flower urging treatment.

2. The storage method according to claim 1, wherein the heat-insulating material, the material forming the first heat-insulating layer and the material forming the second heat-insulating layer are straw, lawn grass, sawdust and/or reed stalks .

3. The storage method according to claim 1 or 2, wherein the thickness of the first insulation layer is 5cm-10cm; the thickness of the second insulation layer is 2cm-8cm, and the thickness of the soil layer is 5cm ~10cm.

4. The storage method according to any one of claims 1-3, wherein the cultivation substrate is a mixture of slag, decomposed sawdust and decomposed straw in a volume ratio of 1:1-3:1-3.

5. The storage method according to any one of claims 1-4, wherein the storage pit is located in a leeward and sunny position, with a length of 5m-7m, a width of 4m-6m, and a depth of 0.3m-0.8m.

6. The storage method according to claim 5, wherein the storage pit is provided with drainage pits located at four bottom corners and drainage ditches connected with the drainage pits extending outward from the four bottom corners, the The depth of the drainage pit is 0.2m to 0.6m, and the volume is 0.01m ³ to 0.25m ³ .

7. The storage method according to claim 5 or 6, wherein the middle part of the bottom of the storage pit gradually lowers toward the periphery to form a slope, and the bottom of the drainage ditch is 2cm-10cm lower than the bottom of the drainage pit.

8. The storage method according to any one of claims 1-7, wherein the storage method is implemented after the daily average temperature in autumn is lower than 10°C.

9. The storage method according to any one of claims 1 to 8, wherein the accelerated cultivation is carried out for the flowers from New Year's Day to before the natural flowering period.

Because the method of the present invention allows roots to adapt to the cultivation substrate environment during storage, utilizes natural low temperature to break bud dormancy, adopts comprehensive heat preservation measures (comprising such as plastic film and natural renewable first insulation layer, second insulation layer and soil layer) to Protecting the underground part can overcome the following problems in the conventional storage process on the basis of reducing storage costs: 1) the plants are not evenly cooled; 2) the roots grow poorly, it is difficult to produce new roots, and flowering mainly depends on the nutrition of old roots , often cause the death of the plant after flowering; 3) the proportion of mosaic leaves is out of balance (such as "there are flowers but no leaves" phenomenon); 4) energy consumption is large; and 5) problems such as high cost.

Detailed ways

As described above, the present invention provides a method for storing potted tree peonies for accelerated cultivation, that is, a method for storing potted tree peonies to be used for accelerated cultivation, also referred to herein as a method for storing potted tree peonies for accelerated cultivation.

First, the peony plant is planted in a flower pot with a cultivation medium. Because the peony plants have been planted in flower pots before storage, the roots of the peony plants have adapted to the cultivation substrate environment in the process of breaking dormancy, and can be directly moved into the greenhouse for the next step after breaking dormancy. No need to repot. At the same time, due to measures such as heat preservation and cold protection for the roots of peonies during storage, the roots can germinate new roots under these conditions. After refrigeration, the peonies can directly use the substrate for nutrient growth through these new roots, improving the ornamental value of later flowering.

The present invention has no special restrictions on the cultivation medium, and mainly considers the growth needs of the peony root system, that is, good ventilation and water permeability and sufficient nutritional requirements for the root system. Considering the availability, etc., it is preferable to use a mixture of slag, decomposed sawdust and decomposed straw with a volume ratio of 1:1 to 3:1 to 3 as the cultivation substrate. The volume ratio is, for example, 1:1:1, 1:2 :1, 1:3:1, 1:1:2, 1:1:3, 1:2:2:1:2:3 or 1:3:3. By using the slag, decomposed sawdust and decomposed straw in the volume ratio, a cultivation substrate with a porosity suitable for planting peony plants can be obtained, and such cultivation substrate components can reduce pests and diseases caused by the cultivation substrate.

In addition, the present invention has no special limitation on the used flower pots, for example, a flower pot with an appropriate height and diameter can be selected according to the height and diameter of the root cap and the height and diameter of the aboveground part. In general, for example, a flower pot with a height of 25cm to 50cm (such as 25cm, 30cm, 35cm, 40cm, 45cm or 50cm) and a diameter of 30cm to 60cm (such as 30cm, 40cm, 50cm or 60cm) can be used. If the pot size (height and/or diameter) is too small, it may not be able to bury the underground part of the peony plant in the cultivation medium, or affect the further growth and development of the roots; if the size is too large, it may not be in harmony with the proportion of the whole peony plant And lose attractive in appearance, but also increased the difficulty of storage operation.

Then, dig a storage pit, and fill the first insulation layer at the bottom of the storage pit.

The storage pit can generally be selected to be located in a leeward and sunny place, the length can be, for example, 5m to 7m (such as 5m, 6m or 7m), the width is 4m to 6m (such as 4m, 5m or 6m), and the depth is 0.3m to 0.8m. m (eg 0.3m, 0.4m, 0.5m, 0.6m, 0.7m or 0.8m). The length and width need to be determined according to the number of potted peonies to be stored, but if the length and width are too large, the temperature in the storage pit may not be uniform, so that the potted peonies stored therein may not form a consistent commercial potted flower in later cultivation; If the length and width are too small, the number of potted peonies that can be stored is too small, which will increase the manpower required for digging pits, and the batch operation is inconvenient, resulting in reduced efficiency. In addition, if the depth is too small, it may not be possible to bury the underground part of the peony plant, and if the depth is too large, more manpower will be consumed, which is not cost-effective.

Preferably, the storage pit is provided with drainage pits located at the four bottom corners and drainage ditches connected to the drainage pits extending outward from the four bottom corners, so as to prevent the potted peonies in the storage pit from being damaged by accumulated water. damage. The depth and volume of the drainage pit can be determined according to the climatic conditions such as rainwater conditions during the storage period, for example, in the Beijing area, the depth can be 0.2m～0.6m (such as 0.2m, 0.3m, 0.4m, 0.5m or 0.6m), the volume is 0.01m ³ to 0.25m ³ (eg 0.01m ³ , 0.015m ³ , 0.02m ³ or 0.025m ³ ).

More preferably, the middle part of the pit bottom of the storage pit gradually lowers toward the periphery to form a slope, so as to facilitate the rainwater entering the storage pit to flow into the drainage pit. The bottom of the drainage ditch is 2cm-10cm lower than the bottom of the drainage pit, such as 2cm, 3cm, 5cm, 7cm or 8cm, etc., so that the water in the drainage pit can flow into the drainage ditch and finally be discharged into the storage pit outside.

In addition, ridges can also be formed around the storage pit, and the height of the ridge should be 5cm to 20cm higher than the flower pot, such as 5cm, 10cm, 15cm or 20cm, to prevent external rainwater from flowing into the storage pit.

The present invention has no special limitation to the material of the first insulation layer filled in the bottom of the storage pit, but in terms of availability and environmental protection, the material is preferably an organic renewable material, such as straw (such as corn stalks, rice stalks, etc.) or wheat straw, etc.), lawn grass, sawdust and/or reed stalks, etc. Among these materials, sawdust can be used directly because it is relatively fine, and other thermal insulation materials can be used directly after drying, or they can be cut and crushed to a certain extent (for example, they can be cut into materials with a size of about 2cm) to make it more convenient or easier. layer or fill.

Then, the flower pots are put into the storage pit, and heat insulating materials are filled between the flower pots, so as to avoid cold air from entering, thereby increasing the temperature of the roots, preventing the roots from being damaged by freezing, and facilitating rooting. Prevent the flower pot from freezing and cracking, and it is easy to pot. The present invention has no special limitation on the thermal insulation material used here, as long as it can be filled between the flower pots and can play a role of thermal insulation. However, in terms of availability and environmental protection, the thermal insulation materials used here are preferably organic renewable materials, such as straw (such as corn straw, rice straw or wheat straw, etc.), lawn grass, sawdust and/or reed stalks. Among these materials, sawdust can be used directly because it is relatively fine, and other thermal insulation materials can be used directly after drying, or they can be cut and crushed to a certain extent (for example, they can be cut into materials with a size of about 2cm) to make it more convenient or easier. layer or fill.

After filling the insulation material between the flowerpots, cover with the second insulation layer. The present invention has no special limitation on the thickness of the second heat-insulating layer, which can be selected according to heat-insulating requirements and the availability of materials forming the second heat-insulating layer. For example, the thickness of the second heat-insulating layer can be 2cm to 8cm, for example, 2cm, 3cm, 4cm, 5cm, 6cm, 7cm or 8cm. In addition, the present invention has no special limitation on the material of the second thermal insulation layer, but from the perspective of availability and environmental protection, the thermal insulation material used here is preferably an organic renewable material, such as straw (such as corn stalks, rice stalks, etc.) straw or wheat straw, etc.), lawn grass, sawdust and/or reeds, etc. Among these materials, sawdust can be used directly because it is relatively fine, and other thermal insulation materials can be used directly after drying, or they can be cut and crushed to a certain extent (for example, they can be cut into materials with a size of about 2cm) to make it more convenient or easier. layer or fill.

Then cover the plastic film on the second insulation layer, and allow the branches of the peony plant to protrude therefrom by digging holes in the plastic film. On the one hand, the plastic film can keep the roots warm, and on the other hand, the peony plant can be easily taken out by lifting the plastic film in subsequent steps. The present invention has no special limitation on the thickness and quality of the plastic film, and those skilled in the art are fully capable of selecting it from the perspectives of convenient acquisition and operation. In consideration of cost and availability, waste and old greenhouse films can be used.

In order to prevent the plastic film and/or the second insulation layer from being lifted by the wind, and to further enhance the thermal insulation effect, the plastic film can be covered with a soil layer. The present invention does not have special restriction to soil layer thickness either, but preferably 5cm～10cm, for example be 5cm, 6cm, 7cm, 8cm, 9cm or 10cm; The insulation layer may be easily lifted, and on the other hand, the insulation effect of the soil layer cannot be fully utilized; if the thickness of the soil layer is too large, it will increase the difficulty of covering the soil and taking out the peony plants in the later stage.

30 to 80 days after the above steps are completed, the flower pots are taken out and moved into the greenhouse for flower prompting treatment. If the flower urging treatment is carried out too early, the peony plant may not be able to bloom in time due to the incomplete break of dormancy; if the time is too late, or the time left for the flower urging treatment is too short, the flower urging treatment is insufficient and cannot bloom on time, Or the time for breaking the dormancy treatment needs to be significantly advanced, and at that time, the weather temperature may not have dropped to the low temperature treatment temperature of 0-10°C, so that the natural low temperature cannot be used for the dormancy breaking treatment. As for the method of flower urging treatment, the present invention is not particularly limited, and the conventional method of peony flower urging treatment can be adopted, for example, the flower urging described in "Chinese Peony and Peony" (China Forestry Publishing House, 1999) can be used, edited by Li Jiajue. processing method.

The present invention has no special limitation on the variety type of the peony plant, and the variety can be an early-flowering variety, a middle-flowering variety or a late-flowering variety (divided according to the effective accumulated temperature required for flower urging).

Generally speaking, each flower has a lower limit temperature for its growth, and only when the temperature is higher than the lower limit temperature, it has the possibility of growth and development. The sum of the value obtained by multiplying the temperature value higher than the lower limit temperature that has an effective effect on flower growth and development by the number of days in the entire growth period of the flower (°C·d) is called the effective accumulated temperature. For peonies, with the biological starting temperature of 4°C as the lower limit temperature, peony plant varieties with an effective accumulated temperature in the range of 420-440°C·d for flowering are generally called early-flowering varieties. Peony plant varieties with accumulated temperature in the range of 450-470°C·d are called middle-flowering varieties, and peony plant varieties with effective accumulated temperature in the range of 480-500°C·d are called late-flowering varieties.

For example, according to the research results of the present inventors, early flowering varieties include but are not limited to 'Jingyu', 'Qiaozihong', 'Shenggejin', 'Zhuguangmorun', 'Mochi Jinhui', 'Golden Cui' or 'Zang Zhihong'; medium-flowering varieties include but are not limited to 'Yinhongqiaodui', 'Yuxi Yingyue', 'Baiyuanhongxia', 'Zierqiao', 'Fuguimantang', 'Guanqunfang', 'Yinhongqiaodue' ', 'Snow Lotus', 'Zhao Fan', 'Snow Pagoda', 'Manjianghong', 'Green Fragrance Ball', 'Xiangyu', 'Lu Hehong', 'Hua Erqiao', 'Grand Concubine Chacui',' Peach red Feicui', 'Doulu', 'Eighteen', 'Oolong Pengsheng', 'Ruby', 'Meat Furong', 'Yinghong' or 'Sapphire'; late-flowering varieties include but are not limited to 'Yu Face peach blossom, 'Kao', 'Junyanhong', 'Huhong', 'Chaoyi', 'Red Butterfly', 'Gold Award Red' or 'Qinglong Zhenbao'. From the standpoint of, for example, flowering treatment time, early flowering varieties are preferred.

When the variety of the peony plant is an early-flowering variety, it is preferred that the flower-promoting treatment be carried out 35-45 days before flowering; When the variety of the peony plant is a late-flowering variety, the flower-urging treatment is carried out 45 to 55 days before flowering. The "use of flowers" mentioned here refers to putting the finished flowers on the market or directly using them for purposes such as placing flowers. For example, if you plan to use early-flowering peonies during the Spring Festival, you should move the peony plants that have been broken from dormancy by low temperature into the greenhouse for flower-urging treatment 35 to 45 days before the Spring Festival.

Preferably, the storage method is implemented after the average daily temperature in autumn is lower than 10° C., so that the natural low temperature can be effectively used to break the dormancy of the peony buds. At the same time, the "promoting cultivation" of the present invention is to make the peony bloom in advance, so conventional flower-promoting treatment is generally adopted in the later stage. Such promoting cultivation is preferably implemented for the flowers used from New Year's Day to before the natural flowering period.

Hereinafter, examples will be used to illustrate specific embodiments of the present invention, but these examples should not be construed as limiting the present invention to these examples.

Example

Example 1

Dig a storage pit with a length of 6m, a width of 5m, and a depth of 0.5m at an outdoor leeward sunny place. The storage pit is provided with drainage pits at its four bottom corners, and is also provided with a storage pit extending outward from the four bottom corners. The drainage ditch connected to the drainage pit, the depth, length and width of the drainage pit are 0.4m, the middle part of the bottom of the storage pit gradually decreases to the periphery to form a slope, and the bottom of the drainage ditch is 6cm lower than the bottom of the drainage pit. Then fill the bottom of the pit with a 2cm thick layer of sawdust as the first insulation layer.

On October 10, 2007, 10 4-year-old peony plants of the variety "Yinhongqiaodu" were selected, and the peony plants were collected from the experimental farm of the Vegetable and Flower Research Institute of the Chinese Academy of Agricultural Sciences. Air the peony plant out of direct sunlight for 3 days to soften the roots slightly.

Using the mixture of slag, decomposed sawdust and decomposed straw at a volume ratio of 1:2:1 as a cultivation substrate, the peony plants that have been aired are planted in flower pots.

Water the cultivation medium in the flower pot twice, and then let it dry in a cool place for 4 days to dry the cultivation medium slightly.

The flower pots planted with the peony plants are closely placed on the sawdust layer in the pit, and lawn grass as heat-insulating material is filled between the flower pots.

Cover the flower pot with a 5cm layer of straw as the second insulation layer, and then cover a layer of plastic film on the second insulation layer, and dig holes in the plastic film to allow the peony plant Branches protrude from it, and then cover with 8cm of soil. Build a ridge higher than the flowerpot 10cm around the storage pit.

After December 18th, the flower pots were taken out and moved into the greenhouse for flower prompting. That is, the temperature of the greenhouse is gradually raised, from the germination stage to the bud bud stage, it is kept at 7°C to 15°C during the day, and at night at 5°C to 7°C; ℃, after the round peach period, it is 18℃～23℃ during the day and 15℃～20℃ at night. The humidity is above 70%, and the light is supplemented for 4h-5h (hours) every night after the round peach period.

The peony in Comparative Example 3 was directly placed in a 4°C cold storage after seedling emergence, and the treatment time was the same as that of the above test, and the treatment was carried out synchronously, and then placed in the greenhouse for flower prompting treatment.

Examples 2 to 7 and Comparative Examples 1 to 2

Examples 2 to 7 and Comparative Examples 1 to 2 were performed in the same manner as in Example 1 except for the contents listed in Table 1.

Examples 8 to 14 and Comparative Examples 4 to 6

Except the content listed in table 2 and adopting " meat lotus " kind to replace " Yinhongqiao pair " kind, carry out embodiment 8 to 14 and comparative examples 4 to 5 according to the same mode as embodiment 1, comparative example 6 is It was carried out in a manner similar to that of Comparative Example 3, that is, it was processed in a 4° C. cold storage.

Table 1 The parameter values and the measured results of the measured parameters when the "Yinhongqiao pair" variety was subjected to low temperature to break dormancy and at the same time the underground part was kept warm

Table 2 The values of the parameters and the results of the measured parameters for the underground part of the "Meat Hibiscus" variety when the low temperature is used to break dormancy and the temperature is kept

Among them, the measurement methods of each index are as follows:

The average number of hair roots: the number of hair roots of each of the 10 peony plants is counted and then the average value is calculated.

New root length: 10 new roots were randomly selected from each peony plant and their lengths were measured, then the lengths of all the measured new roots were summed and then averaged.

Flowering rate of plants (%): number of flowering plants/number of treated plants×100%.

Leaf weight/flowering branch weight (%): Randomly select flowering branches from each peony plant, divide the total weight of leaves of a single flowering branch by the weight of the entire flowering branch and multiply by 100 to obtain the value.

Flower diameter: Use a vernier caliper to randomly select 3 flowers from each plant, then measure the maximum diameter of the flowers and then calculate the diameter of each flower, where the maximum diameter refers to the maximum diameter passing through the center of the flower (flowers are generally not round).

The survival rate of the next year's plants: the percentage obtained by dividing the number of surviving plants by 10 in April of the following year.

Show from the result in table 1 and 2, adopt the method of the present invention to overcome problems such as the mosaic leaf ratio imbalance and new root growth and development of peony. And the average hair root number, the new root length and the survival rate of the next year of the peony plants in Comparative Examples especially in Comparative Examples 3 and 6 all have obvious reductions, and the plant flower rate and leaf weight/flower branch weight % are low, and the flower diameter Small.

The embodiments described herein are merely illustrative of preferred embodiments of the invention. Those skilled in the art to which the present invention belongs can carry out various modifications to the described embodiments according to the disclosed content of the present invention, but the technical solutions obtained by such modifications without departing from the essence of the present invention still fall within the appended claims within the bounds of the book.

Claims (9)

1. A kind of storage method that promotes potted tree peony for cultivation, and described storage method comprises the steps: In the first step, the peony plant is planted in the flowerpot with the cultivation substrate; Step 2, digging a storage pit, and filling the first insulation layer at the bottom of the storage pit; In the third step, the flower pots are put into the storage pit, and thermal insulation materials are filled between the flower pots; In the 4th step, a second insulation layer is covered on the flowerpot; In the 5th step, a plastic film is covered on the second insulation layer, and the branches of the peony plant are stretched out by digging holes in the plastic film; Step 6, covering the plastic film with a soil layer; In the seventh step, after 30 to 80 days, the flower pots are taken out and moved into the greenhouse for flower urging treatment. 2. The storage method according to claim 1, wherein, the heat insulating material, the material forming the first heat insulating layer and the material forming the second heat insulating layer are straw, lawn grass, sawdust and/or reed stalks . 3. The storage method according to claim 1 or 2, wherein the thickness of the first insulation layer is 5cm to 10cm; the thickness of the second insulation layer is 2cm to 8cm, and the thickness of the soil layer is 5cm ~10cm. 4. The storage method according to any one of claims 1-3, wherein the cultivation substrate is a mixture of slag, decomposed sawdust and decomposed straw in a volume ratio of 1:1-3:1-3. 5. The storage method according to any one of claims 1-4, wherein the storage pit is located at a leeward and sunny position, with a length of 5m-7m, a width of 4m-6m, and a depth of 0.3m-0.8m. 6. The storage method according to claim 5, wherein the storage pit is provided with drainage pits located at the four bottom corners and a drainage ditch extending outward from the four bottom corners to connect with the drainage pits, the The depth of the drainage pit is 0.2m to 0.6m, and the volume is 0.01m ³ to 0.25m ³ . 7. The storage method according to claim 5 or 6, wherein, the middle part of the bottom of the storage pit gradually decreases toward the periphery to form a slope, and the bottom of the drainage ditch is 2cm-10cm lower than the bottom of the drainage pit. 8. The storage method according to any one of claims 1-7, wherein the storage method is implemented after the daily average temperature in autumn is lower than 10°C. 9. The storage method according to any one of claims 1 to 8, wherein the promoting cultivation is implemented for the flowers from New Year's Day to before the natural flowering period.