A cultivation method for improving ornamental and edible properties of colored cauliflower

Abstract

The present application provides a kind of cauliflower flower ball protective agent, which is composed of the following components: abscisic acid 4-6 μmol / L, selenogluconate 20-28 mg / L, carboxymethyl chitosan 5-7 g / L.The present application also provides a kind of cultivation method for improving the ornamental and edible properties of colored cauliflower, which adopts the present application segmented cultivation method, and the plant growth potential is strong during seedling stage and rosette stage.The obtained flower ball has good commodity properties, high anthocyanin content, long ornamental period and keeping period of colored flower ball, and has good application prospect.

Description

Technical Field

[0001] This invention belongs to the field of vegetable cultivation, specifically relating to a cultivation method for improving the ornamental and edible qualities of colored cauliflower. Background Technology

[0002] Cauliflower, also known as broccoli, belongs to the Brassicaceae family and is a variety of cabbage. The edible part of cauliflower is the flower head, which is popular with growers and consumers due to its compact texture, rich colors, and high nutritional value. Colored cauliflower not only has even higher edible and nutritional value, but also boasts diverse flower head colors, including light green, purple, yellow, and orange, and comes in both spherical and pagoda shapes, adding to its ornamental value. With consumers increasingly demanding higher nutritional and aesthetic qualities in vegetables, the market potential for colored cauliflower is enormous.

[0003] Currently, in terms of colored cauliflower production, most growers adopt field planting methods, transplanting seedlings into the field until harvest time, and then harvesting the flower heads for sale. This method has some limitations in harvesting and selling the flower heads: the flower heads must be harvested as soon as they mature, otherwise they will lose their marketability; the shelf life after harvest is short, and at relatively low temperatures, their marketability can generally only be maintained for about 4 days; the flower heads are not easy to preserve after harvest, and their nutritional value decreases rapidly over time.

[0004] With the improvement of modern living standards and changes in lifestyle, potted vegetables are gradually entering the market and gaining popularity. Some growers have also tried using potted colored cauliflower, directly sowing seeds or transplanting seedlings into flowerpots. However, its growth cycle is lengthy, it is susceptible to pests and diseases, has high requirements for temperature and water, and is difficult to manage. Furthermore, cauliflower develops slowly in the space of a flowerpot, making it difficult to produce large, brightly colored, marketable, and heavy flower heads, thus hindering the achievement of economies of scale.

[0005] Therefore, it is necessary to improve cauliflower cultivation methods to enhance the quality, yield, and marketability of colored cauliflower, extend the ornamental period of colored flower heads, and meet market demands and consumer expectations.

[0006] Temporary transplanting refers to the process of digging up seedlings and replanting them temporarily after they have grown to a certain stage. There are reports of temporary transplanting of cauliflower, usually for cauliflower that has not yet reached marketability by winter. To prevent frost damage to the flower heads, it needs to be moved to a greenhouse or protected environment for growth. However, this transfer can easily cause the plants to wilt for a long time, with wilting leaves and slow growth. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides a cultivation method for colored cauliflower that is high in anthocyanins, has good disease resistance, and significantly improves both its ornamental and edible qualities.

[0008] This invention provides a cauliflower head protectant, which is composed of the following components in the following proportions: abscisic acid 4-6 μmol / L, selenoglucose 20-28 mg / L, and carboxymethyl chitosan 5-7 g / L.

[0009] It is composed of the following components in the following proportions: abscisic acid 5 μmol / L, selenoglucose 24 mg / L, and carboxymethyl chitosan 6 g / L.

[0010] This invention also provides the use of the above-mentioned cauliflower head protectant in cauliflower cultivation.

[0011] This invention also provides a method for cultivating cauliflower, which adopts a segmented cultivation method and includes the following steps:

[0012] a. Cauliflower seedlings, transplanted to the field for growth;

[0013] b. Transplanting: When the flower head grows to a diameter of 6-8cm, prepare to transplant it. Before transplanting, apply the above-mentioned flower head protectant to the flower head.

[0014] c. Post-transplanting management;

[0015] d. Harvest, that's all.

[0016] In step a: the cauliflower is colored cauliflower.

[0017] In step a: the seedling raising adopts greenhouse tray seedling raising, the tray is covered with nutrient soil, and the cauliflower seeds are scattered into the tray;

[0018] Furthermore, the preparation method of the nutrient soil is as follows: first, mix garden soil, peat moss and vermiculite in a volume ratio of 5:3:1 to form the base nutrient soil, then add 2-4 kg of compound water-soluble fertilizer with a nitrogen, phosphorus and potassium ratio of 15:15:15 per cubic meter of base nutrient soil and stir evenly.

[0019] In step b: the flower ball protectant is used to evenly wet the flower ball; 45-55 mL of protectant is used for each flower ball.

[0020] In step b: Three days before transplanting, root-promoting and bulb-promoting treatments are performed, as follows:

[0021] Use a water-soluble fertilizer with a nitrogen, phosphorus, and potassium ratio of 10:5:18 and a rooting powder at a ratio of 1:800, and apply the water-soluble fertilizer and rooting agent to the roots.

[0022] In step b, before transplanting, the process includes removing leaves from the cauliflower and protecting the wounds.

[0023] In step d: the harvesting is carried out when the flower head diameter grows to 16-22cm.

[0024] The segmented planting method provided by this invention involves unified management in the field, followed by root protection, head protection, and transplanting treatments, and spraying with a specific flower head protectant. This reduces damage to cauliflower during transplanting, allowing it to recover quickly after transplanting. In potted containers, it can continue to develop healthily until harvest. The entire potted plant has an attractive shape, and the flower heads maintain their vibrant colors. The flower heads have a holding period of up to 20 days and a high anthocyanin content, greatly satisfying the demand for colorful flower heads. Furthermore, the mature flower heads can still be harvested and consumed normally, and the yield is comparable to that of field cultivation.

[0025] Using the method of this invention, the management difficulty for growers can be greatly reduced. Before transplanting, cauliflower can be managed uniformly according to ordinary field-grown cauliflower. After transplanting, the cauliflower heads are of excellent quality and have good marketability. Compared with potted cauliflower, it is not only simpler and cheaper, but also extends the shelf life and has greater sales flexibility, allowing for transplanting on demand, thereby minimizing the sales difficulty for growers. For consumers, transplanted colored cauliflower is easier to grow at home than directly potted colored cauliflower. After purchasing, the planting difficulty is small, requiring no professional planting knowledge or a lot of time for management. The mature cauliflower heads are not obstructed by leaves, making them simple and beautiful, and can beautify the home environment. Moreover, the cauliflower harvested by oneself is safe, fresh, nutritious, and reassuring.

[0026] This invention combines environmental beautification with the consumption of green vegetables, breaking through the traditional notion that colored cauliflower is only edible. It combines the current trend of balcony vegetables, making them both ornamental and edible with high nutritional value, and has good application prospects.

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. However, the embodiments do not limit the present invention in any way. For those skilled in the art, any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present invention should be considered equivalent substitutions and are included within the protection scope of the present invention. Attached Figure Description

[0028] Figure 1 This is a flowchart of the segmented cultivation process of the present invention.

[0029] Figure 2 This is a picture of a flower ball grown outdoors.

[0030] Figure 3 This is a diagram of the flower ball produced by segmented cultivation according to the present invention.

[0031] Figure 4 This is a picture of a flower ball grown in a flowerpot. Detailed Implementation

[0032] The present invention will be further described in detail below with reference to the embodiments, but the present invention is not limited thereto.

[0033] All raw materials used in the following examples are commercially available products.

[0034] Example 1: Method for segmented cultivation of colored cauliflower according to the present invention

[0035] The flowchart of the cultivation method of this invention is attached. Figure 1 .

[0036] The specific steps are as follows:

[0037] 1. Preparation of nutrient soil: Prepare nutrient soil by mixing garden soil, peat moss and vermiculite in a volume ratio of 5:3:1. Add 2-4 kg of compound water-soluble fertilizer per cubic meter of nutrient soil (the ratio of nitrogen, phosphorus and potassium in the water-soluble fertilizer is 15:15:15). Mix well and allow the nutrient soil to fully absorb water (fertilizer, fungicide, rooting powder, etc. are all purchased from Stanley Agricultural Group Co., Ltd.).

[0038] Choose farmland or garden soil that is free from pollution, pests, and diseases, has a moderate texture, and good fertility. Well-rotted farmyard manure needs to be fully decomposed, with an organic matter content of 30%–50%, nitrogen content typically 0.5%–2.0%, phosphorus content generally 0.2%–1.0%, potassium content 0.5%–2.0%, pH value between 6.0 and 7.5, and moisture content preferably controlled at 30%–40%. It should be dried before use. Peat moss should have good water retention, aeration, and fertility, with a pH value between 5.5 and 6.5. Select vermiculite with a particle size between 2 and 4 mm.

[0039] 2. Seedling raising: Seedlings are raised in greenhouse plug trays. The plug trays are disinfected with a 400-500 times diluted solution of 50% carbendazim. After drying, the nutrient soil is spread evenly, and the colored cauliflower seeds are scattered into the plug trays. During the seedling period, the greenhouse temperature is controlled at 20-25℃ during the day and 10-15℃ at night.

[0040] 3. Transplanting: Select fertile, loose and well-drained sandy loam and loam fields. Apply base fertilizer including 1000 kg / mu of well-rotted farmyard manure, 50 kg / mu of NPK 15:15:15 compound fertilizer, and 1-2 kg / mu of boric acid. Transplant the colored cauliflower seedlings into the field when they have grown to four leaves and one heart. Keep the roots of the seedlings wrapped in the nutrient soil ball. The plant spacing is 50×50cm. Water thoroughly after transplanting.

[0041] 4. Field Management: Apply topdressing 7-10 days after transplanting, using urea at 10-12 kg / mu; 25-30 days after transplanting, apply NPK 15:15:15 compound fertilizer at 10-15 kg / mu through irrigation; 45-50 days after transplanting, apply potassium sulfate at 8-10 kg / mu and 15:15:15 compound fertilizer at 10-15 kg / mu through irrigation. Control soil moisture at 60-75% according to weather conditions, and carry out integrated pest management, weeding, and hilling. Prepare for transplanting when the flower heads grow to 6-8 cm in diameter.

[0042] 5. Promote root and bulb development before transplanting: 3 days before transplanting, apply water-soluble fertilizer with a nitrogen, phosphorus and potassium ratio of 10:5:18 and rooting powder at a ratio of 1:800 to the roots.

[0043] 6. Protection of the flower head and removal of leaves on the day of transplanting: Use a protective agent made of 5 μmol / L ABA, 24 mg / L selenoglucose (selenium content is 3%), and 6 g / L carboxymethyl chitosan.

[0044] The preparation method of the flower ball protectant is as follows: Weigh 1.32 mg (i.e. 5 μmol) of ABA, then weigh 24 mg of selenoglucose and add it to 700 ml of water and stir evenly. Finally, add 6 g of carboxymethyl chitosan, stir evenly and make up to 1 L.

[0045] Evenly spray the flower heads with a sprayer, using 45-55 ml of the protective agent per head. This agent is sprayed evenly on the surface of the flower heads before transplanting to prevent them from losing vitality and thus their ornamental and edible value, and to promote healthy growth of the cauliflower during the potting period. This agent combination also enhances the ornamental and nutritional value of the flower heads. The concentration and ratio mentioned have been optimized through experiments and can effectively ensure vigorous growth of the cauliflower plants, with bright, full flower heads and high anthocyanin content.

[0046] Remove all leaves from the plant, leaving only the innermost layer of leaves closest to the flower head to protect it. Sterilize the shears before use, making a smooth cut without damaging the main stem;

[0047] 7. Wound protection: Apply plant-based wound healing agent (Sanliujiu Biotechnology) to the injured area to promote wound healing and prevent infection;

[0048] 8. Transplanting: Transplanting should be done on a cloudy day or in the evening of a sunny day. Prepare a flowerpot with a diameter of 30-40cm. Spread 5-7cm of soil at the bottom of the flowerpot, water the soil at the bottom of the cauliflower thoroughly, and tamp down the soil around the cauliflower. When digging, retain soil around the main root within a 10cm radius, and dig deeper than the length of the main root to preserve as much of the root system as possible. Transplant the cauliflower with soil into the flowerpot, trying not to damage the roots. Fill the surface of the flowerpot with nutrient soil to make the surface level and ensure that the cauliflower plant is firmly against the pot wall and upright, without leaving any gaps. All the details and requirements of the transplanting operation ensure the integrity and adaptability of the plant during the transplanting process.

[0049] 9. Post-transplanting care: Let it stand in a cool, shady place for 1 day;

[0050] Temperature and light management during the potted period: After the seedlings have recovered, place the plants in a cool and ventilated place with a temperature not exceeding 25℃, and avoid direct sunlight;

[0051] Water and nutrient management during potted plant growth: Water the soil when it is dry to the touch, once a week. When watering, water thoroughly at the base of the plant, avoiding watering the flower ball and stem.

[0052] 10. Harvesting: Harvest when the flower head diameter reaches 16-22cm.

[0053] The following experimental examples illustrate the beneficial effects of the present invention:

[0054] Experiment Example 1: Comparison of the effects of different cultivation methods

[0055] Seeds were selected from the Zijing No. 1 variety of cauliflower, which is characterized by strong resistance to adverse conditions and diseases. The plants are upright, with dark green leaves covered in wax powder, and the flower heads are round, plump, and brightly colored.

[0056] 1. Three different cultivation methods

[0057] This variety was cultivated using three methods: open-field cultivation, the segmented cultivation method of this invention, and pot cultivation. The cultivation conditions before transplanting were the same for both open-field and segmented cultivation (including root-promoting and bulb-promoting treatments before transplanting). After bulb formation, the plants continued to be grown in the open field until maturity. The pot cultivation method followed a technique for growing cauliflower in pots in a garden (application number CN201510227263), with 20 plants replicated for each method.

[0058] The specific method of segmented cultivation in this invention is as follows: Prepare nutrient soil by mixing garden soil, peat moss, and vermiculite in a volume ratio of 5:3:1 (50 kg, 30 kg, and 10 kg respectively). Spray with a water-soluble fertilizer containing nitrogen, phosphorus, and potassium in a ratio of 15:15:15, stirring thoroughly to ensure complete water absorption. Raise seedlings in trays in a greenhouse. When the seedlings reach four leaves and a central bud, transplant them to the field. Apply fertilizer deeply during land preparation: 1000 kg / mu of base fertilizer, 40 kg / mu of NPK compound fertilizer, 15-20 kg / mu of superphosphate, 8-12 kg / mu of urea, and 1-2 kg / mu of boric acid. After transplanting, apply top dressing of 10-12 kg / mu of urea and 6-8 kg / mu of potassium sulfate mixed and applied by irrigation, maintaining soil moisture at 70% depending on the weather. Regularly inspect the soil, implementing integrated pest management, weeding, and hilling. When the flower heads reach 6-8 cm in height, prepare for transplanting.

[0059] Three days before transplanting, apply a water-soluble fertilizer with a nitrogen, phosphorus and potassium ratio of 10:5:18 and a rooting powder at a ratio of 1:800 to the roots.

[0060] On the day of transplanting, evenly spray the flower head with the flower head protectant of this invention, then cut off all the leaves of the plant, leaving only the innermost layer of leaves protecting the flower head. Sterilize the scissors before use, ensuring a smooth cut that does not damage the main stem. Apply plant wound healing agent to the damaged area to promote healing and prevent infection.

[0061] Transplanting should be done on a sunny evening. Prepare a 35cm diameter flowerpot. Spread 5-7cm of prepared soil at the bottom of the flowerpot. Water the soil at the bottom of the cauliflower plant thoroughly along the main root. Tamp down the soil around the main root. Use a shovel to take soil with a radius of 10cm along the main root. Avoid damaging the roots when digging. After taking it out, put it into the flowerpot and fix it with soil to keep the plant upright. Fill the gaps with nutrient soil and then spread another layer to make the surface smooth and ensure that the cauliflower plant is firmly against the flowerpot wall and upright, without leaving any gaps.

[0062] After transplanting, place the plants in a cool, shady place for one day. Once the seedlings have recovered, place them in a cool, well-ventilated warehouse at a temperature not exceeding 25℃. Water the soil only when it is dry to the touch, once a week, ensuring thorough watering at the base of the plant and avoiding watering the flower heads and stems. Harvest when the flower heads reach a diameter of 16–22 cm.

[0063] 2. Comparison of different cultivation methods

[0064] Images of the flower heads from the three cultivation methods can be found below. Figure 2-4 .

[0065] (1) Growth period and bulb holding period of the three cultivation methods: see Table 1, and the difference analysis is shown in Tables 2-3.

[0066] The growing season refers to the time from planting to harvest. The head-holding period refers to the time from the initial formation of the marketable head until it maintains good marketability. A longer head-holding period means farmers have more time to market their products and are better able to withstand market risks; a short head-holding period means the head will quickly become overripe and lose its marketability.

[0067] Table 1. Growth cycle and bulb-holding period for potted, open-field, and segmented cultivation.

[0068]

[0069] Table 2. Analysis of variance on growth cycle and bulb holding period for potted, open-field, and segmented cultivation.

[0070]

[0071] Table 3. Multiple comparisons of growth cycles and bulb-holding periods in potted, open-field, and segmented cultivation.

[0072]

[0073] *The significance level for the difference in mean values ​​is 0.05.

[0074] It can be seen that the average growth cycle of the segmented cultivation of the present invention is 80 days, which is comparable to that of open field cultivation (no significant difference), and significantly shorter than that of pot cultivation; the average bulb holding period is 20 days, which is 7 to 10 days longer than that of open field cultivation and pot cultivation, and the difference is extremely significant.

[0075] (2) Colorimeter test data and anthocyanin content of the three types of flower balls: see Table 4, and the difference analysis is shown in Tables 5-6.

[0076] The LAB color space of the colorimeter is used to describe the color of colored cauliflower. L represents brightness (0-100, 0 is black, 100 is white), a represents the component from green to red (negative for green, positive for red), and b represents the component from blue to yellow (negative for blue, positive for yellow).

[0077] Table 4. Colorimeter values ​​and anthocyanin content for potted cultivation, open-field cultivation, and segmented cultivation.

[0078]

[0079] Table 5. Analysis of variance of colorimeter values ​​and anthocyanin content for potted cultivation, open-field cultivation, and segmented cultivation.

[0080]

[0081] Table 6. Multiple comparison of colorimeter values ​​and anthocyanin content for potted cultivation, open-field cultivation, and segmented cultivation.

[0082]

[0083] *The significance level for the difference in mean values ​​is 0.05.

[0084] It can be seen that in the segmented cultivation of this invention, the average LAB value is high in value a and low in value b, showing a highly significant difference compared with open-field cultivation (uneven purple) and pot cultivation (light grayish-purple), leaning towards a bright reddish-purple. The anthocyanin content of the segmented cultivation of this invention is much higher than that of open-field cultivation and pot cultivation, increasing by 18.2% and 98.6% respectively.

[0085] (3) Flower head diameter, thickness and weight under different cultivation methods: see Table 7, and the difference analysis is shown in Tables 8-9.

[0086] Table 7. Flower head diameter, thickness, and weight for potted, open-field, and segmented cultivation.

[0087]

[0088] Table 8. Analysis of variance of flower head diameter, thickness, and weight for potted, open-field, and segmented cultivation.

[0089]

[0090] Table 9. Multiple comparisons of flower head diameter, thickness, and weight in potted, open-field, and segmented cultivation.

[0091]

[0092]

[0093] *The significance level for the difference in mean values ​​is 0.05.

[0094] It can be seen that the average diameter, thickness and weight of the flower heads cultivated in the segmented manner of the present invention are similar to those of open-field cultivation (no significant difference), but significantly higher than those of pot cultivation, with the weight increasing by as much as 79.17%.

[0095] Through comparative analysis of the three cultivation methods, the significant characteristics of the novel segmented cultivation of purple cauliflower of this invention, such as long head-holding period, bright color, and high anthocyanin content, can be clearly demonstrated.

[0096] Experimental Example 2: Comparison of the use of the flower ball protectant of the present invention

[0097] The variety Zijing No. 1 was selected and divided into three groups: A, B, and C, with 20 plants replicated in each group. The preparation of nutrient soil, seedling raising, transplanting, field management, pre-transplant root and bulb promotion, leaf removal, wound treatment, and transplanting methods were all carried out uniformly according to the cultivation steps for each group. Post-transplanting treatment involved placing the seedlings in a cool, well-ventilated warehouse (around 15℃) for one day to allow them to recover.

[0098] Group A did not use any flower ball protectant;

[0099] Group B used commercially available Guoguang transpiration inhibitor (characterized by containing humic acid water-soluble fertilizer, with humic acid >40g / L and nitrogen, phosphorus, and potassium >200g / L), and sprayed it after diluting it 800 to 1000 times according to the product's instructions.

[0100] Group C used the protective agent of this invention to spray the flower balls.

[0101] After spraying different pesticides, the temperature and light management, as well as the water and nutrient management during the potted period, were the same as in the cultivation steps. The growth status of the plants and the condition of the flower heads were recorded separately, as shown in Table 10.

[0102] Table 10. Head condition of three different treatments

[0103]

[0104] Table 11. Analysis of variance of diameter, weight, and anthocyanin content in three different treatment groups.

[0105]

[0106] Table 12. Multiple comparisons of diameter, weight, and anthocyanin content in three different treatment groups.

[0107]

[0108] *The significance level for the difference in mean values ​​is 0.05.

[0109] Data on the flower heads were measured during the head enlargement and head-holding stages. The growth status and flower head condition of each group are as follows:

[0110] Group A: The plants exhibit weak growth, with pale green leaves lacking vitality. The flower heads are poorly developed, with low diameter, weight, and anthocyanin content. Growth and color are also subpar; the surface is dull, with a rough texture, numerous wrinkles, and a soft, loose consistency, lacking fullness and firmness. During subsequent growth, the flower heads experience significant water loss, making them prone to wilting. They are highly susceptible to pests and diseases, resulting in a very short shelf life. Their marketability and ornamental value are both low, failing to meet market demands and consumer expectations.

[0111] Group B: The plants in this group showed some improvement in growth, but were still weak, with light green leaves. The diameter, weight, and anthocyanin content of the flower heads were slightly better than those without a flower head protectant. The flower head color was somewhat brighter, and the surface was relatively smoother, although some minor unevenness was still visible; the texture was relatively soft. During the growing season, the fullness of the flower heads was average, and their resistance to adverse conditions was weak. The shelf life was extended somewhat, but there was still a significant gap compared to Group C. In terms of marketability and ornamental value, they only reached a moderate level and did not possess a significant advantage in market competition.

[0112] Group C: Using the protective agent of this invention, the plants grew vigorously with deep green leaves. The flower heads developed well, with high diameter and weight, and an anthocyanin content reaching 1.43 mg / g, an increase of 60.67% compared to Group B. The flower heads were bright and attractive, full and round in shape, with a smooth and glossy surface, and a firm yet elastic texture. During potted cultivation, the plants exhibited strong resistance to pests and diseases, effectively resisting adverse environmental conditions. Simultaneously, the shelf life was significantly extended, demonstrating excellent commercial and ornamental value, well-suited to market demands, and providing consumers with a superior experience.

[0113] Through comprehensive observation, detailed recording, and precise data measurement of groups A, B, and C, it is clear that group C (the protective agent of this invention) is significantly superior to groups A and B in terms of post-transplanting treatment effects on colored cauliflower. Group A, lacking the protective agent, suffered severe limitations in the growth and development of its plants and flower heads; while the commercially available product used in group B improved the condition of the plants and flower heads to some extent, it still lagged significantly behind group C in several key indicators.

[0114] Therefore, the protective agent of the present invention has significant advantages in promoting plant growth and flower head development in colored cauliflower after transplanting, and enhancing its ornamental value, nutritional value, stress resistance and shelf life. It can effectively meet market demand and meet consumers' expectations for high-quality colored cauliflower.

[0115] In summary, the cultivation method provided by this invention, through a scientific segmented cultivation approach, can reduce wilting and yellowing after transplanting, resulting in fuller, more beautiful flower heads with vibrant colors and higher levels of anthocyanins and other nutrients. This solves the problems of high cost, difficult management, and poor marketability of potted colored cauliflower. Moreover, it allows people to enjoy both the pleasure of potted flowers and fresh, green edible vegetables, bringing a better visual and gustatory experience.

Claims

1. A cauliflower head protectant, characterized in that, It is composed of the following ingredients in the following proportions: Abscisic acid 4–6 μmol / L, selenoglucose 20–28 mg / L, carboxymethyl chitosan 5–7 g / L.

2. The cauliflower head protectant according to claim 1, characterized in that, It is composed of the following components in the following proportions: abscisic acid 5 μmol / L, selenoglucose 24 mg / L, and carboxymethyl chitosan 6 g / L.

3. The use of the cauliflower head protectant according to claim 1 or 2 in cauliflower cultivation.

4. A method for cultivating cauliflower, characterized in that, It adopts a segmented cultivation method, including the following steps: a. Cauliflower seedlings are raised, transplanted, and grown in the field; b. Transplanting: When the flower head grows to a diameter of 6-8 cm, prepare to transplant it. Before transplanting, apply the flower head protectant as described in claim 1 or 2 to the flower head. c. Post-transplanting management; d. Harvest, that's all.

5. The cultivation method according to claim 4, characterized in that, In step a: The cauliflower in question is a colored cauliflower.

6. The cultivation method according to claim 4, characterized in that, In step a: The seedlings are raised in greenhouse trays, with nutrient soil laid flat in the trays and cauliflower seeds scattered into the trays. Furthermore, the preparation method of the nutrient soil is as follows: first, mix garden soil, peat moss and vermiculite in a volume ratio of 5:3:1 to form the base nutrient soil, then add 2-4 kg of compound water-soluble fertilizer with a nitrogen, phosphorus and potassium ratio of 15:15:15 per cubic meter of base nutrient soil and stir evenly.

7. The cultivation method according to claim 4, characterized in that, In step b: The flower head protectant is used to evenly wet the flower head; 45-55 mL of protectant is used for each flower head.

8. The cultivation method according to claim 4 or 7, characterized in that, In step b: Three days before transplanting, root and bulb-promoting treatments are performed as follows: Use a water-soluble fertilizer with a nitrogen, phosphorus, and potassium ratio of 10:5:18 and a rooting powder at a ratio of 1:800, and apply the water-soluble fertilizer and rooting agent to the roots.

9. The cultivation method according to claim 4 or 7, characterized in that, In step b: Before transplanting, the process also includes removing the leaves from the cauliflower and protecting the wounds.

10. The cultivation method according to any one of claims 4-7, characterized in that, In step d: the harvesting is carried out when the flower head diameter grows to 16-22 cm.

Images