Cultivation method for improving ornamental value and edibility of colorful cauliflower

Abstract

The invention provides a cauliflower ball-flower protective agent. The cauliflower ball-flower protective agent is prepared from the following components in proportion: 4 to 6 [mu] mol / L of abscisic acid, 20 to 28 mg / L of selenoglucose and 5 to 7 g / L of carboxymethyl chitosan. The invention further provides a cultivation method for improving the ornamental value and edibility of the colored cauliflower, by means of the sectional cultivation method, the plants grow vigorously and strongly through open field cultivation in the seedling stage and the rosette stage, reasonable potting is conducted after ball exposure, the obtained flower balls are good in commodity and high in anthocyanin content, the ornamental period and the retention period of the colored flower balls are long, and the ornamental value and edibility of the colored flower balls are improved. The application prospect is good.

Description

Technical Field

[0001] The invention belongs to the field of vegetable planting, and particularly relates to a cultivation method for improving the ornamental and edible properties of colored cauliflower. Background Art

[0002] Cauliflower, also known as cauliflower, belongs to the genus Brassica of the cruciferous family and is a variant of cabbage. The edible part of cauliflower is the flower head, which is deeply loved by growers and consumers because of its compact texture, rich colors and high nutritional value. Colored cauliflower not only has higher edible value and nutritional value, but also has a variety of flower heads, including light green, purple, yellow, orange and other colors. The shapes are also divided into spherical and pagoda shapes, and have high ornamental value. As consumers' requirements for vegetable nutrition and appearance quality increase, the market space for colored cauliflower is huge.

[0003] At present, in terms of the production status of colored cauliflower, most growers adopt the field planting method, planting seedlings in the field until the harvest period, and then picking the flower heads for sale. This method of harvesting and selling flower heads has some limitations. The flower heads must be harvested as soon as they mature, otherwise they will lose their commercial value; the shelf life after harvest is short, and the commercial value can generally only be maintained for about 4 days at a relatively cold temperature; the flower heads are not easy to keep fresh after harvest, and the nutritional value decreases rapidly over time.

[0004] In view of the improvement of modern people's living standards and the change of life concepts, potted vegetables have gradually entered the market and are favored by more and more people. Some growers have also tried to use potted colored cauliflowers, directly sowing seeds or transplanting seedlings into pots for management. However, its growth cycle is long, it is susceptible to pests and diseases, has high requirements for temperature and water, and is difficult to manage. In addition, cauliflowers develop slowly in the space of pots, and it is not easy to produce large, bright, commercially attractive, and heavy flower balls, making it difficult to achieve economies of scale.

[0005] Therefore, it is necessary to improve the cauliflower planting method to improve the quality, yield and commerciality of colored cauliflower, extend the viewing period of colored flower balls, and meet market demand and consumer expectations.

[0006] Transplanting refers to the process of digging out and replanting seedlings after they have grown to a certain stage. There are reports of transplanting cauliflower, which is usually for cauliflower that has not yet reached commercial requirements when winter comes. In order to avoid frostbite of the flower heads, they need to be moved to a greenhouse or protected area for growth. However, after the transfer, the plants are prone to sluggishness for a long time, with wilting leaves and slow growth. Summary of the invention

[0007] In order to solve the defects of the prior art, the present invention provides a cultivation method of colored cauliflower with high anthocyanin content, good disease resistance and significantly improved ornamental and edible properties.

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

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

[0010] The invention also provides use of the cauliflower head protective agent in cauliflower cultivation.

[0011] The present invention also provides a cauliflower cultivation method, which adopts a segmented cultivation method and comprises the following steps:

[0012] a. Raise cauliflower seedlings, plant them and grow them in the field;

[0013] b. Transplantation: When the flower bulb grows to a diameter of 6-8 cm, it is ready for transplantation. When transplanting, first use the above-mentioned flower bulb protective agent on the flower bulb;

[0014] c. Management after transplanting;

[0015] d. Harvest.

[0016] Wherein, in step a: the cauliflower is colorful cauliflower.

[0017] Wherein, in step a: the seedlings are grown in greenhouse plug trays, the plug trays are flatly covered with nutrient soil, and the cauliflower seeds are sown into the plug trays;

[0018] Furthermore, the preparation method of the nutrient soil is as follows: first, garden soil, peat soil and vermiculite are mixed in a volume ratio of 5:3:1 to form basic nutrient soil, and then 2 to 4 kilograms of compound water-soluble fertilizer with a nitrogen, phosphorus and potassium ratio of 15:15:15 is added per cubic meter of basic nutrient soil, and the mixture is stirred evenly.

[0019] Wherein, in step b: the flower curd protective agent is used to evenly wet the flower curd; 45 to 55 mL of the protective agent is used for each flower curd.

[0020] Wherein, in step b: 3 days before the transplanting, root and bulb promotion treatment is performed, the method is as follows:

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

[0022] Wherein, in step b: before the transplanting, the cauliflower is also subjected to leaf removal and wound protection.

[0023] Wherein, in step d: the harvesting is carried out when the curd diameter grows to 16 to 22 cm.

[0024] The segmented planting method provided by the present invention can reduce the damage of cauliflower during transplanting by unified management in the field, and then spray a specific flower head protective agent through root protection, ball protection and transplanting treatment, so that the cauliflower can recover quickly after transplanting, and can continue to grow healthily in the potted container until the harvest period. The whole potted plant has beautiful shape and the flower head can maintain bright color. The flower head holding period is as long as 20 days and the anthocyanin content is high, which greatly meets the viewing demand for colorful flower heads. The flower heads can still be picked and eaten normally when they are mature, and the yield is equivalent to that of field cultivation.

[0025] The method of the present invention can greatly reduce the management difficulty of growers. Before transplanting, the cauliflower is uniformly managed according to the cauliflower planted in the ordinary field. The flower balls after transplanting are of good quality and good commerciality. Compared with potted cauliflower, it is not only simple and cheap, but also has a longer shelf life. It also has strong sales flexibility and can be transplanted on demand, thereby maximizing the sales difficulty of growers. For consumers, transplanting colored cauliflower is more convenient for family planting than directly potting colored cauliflower. It is less difficult to plant after purchase, and no professional planting knowledge and a lot of time management are required. The mature flower balls are not blocked by leaves and are simple and beautiful, which can beautify the family environment. In addition, the cauliflower harvested by oneself is safe, fresh, nutritious, and reliable.

[0026] The method of the present invention combines beautifying the environment with eating green vegetables very well, breaking through the traditional concept that colored cauliflower can only be eaten. Combined with the current hot spot of balcony vegetables, the method can be both ornamental and edible and has high nutritional value, and has good application prospects.

[0027] The present invention is further described below with reference to the accompanying drawings and specific implementation methods in the form of embodiments, but the embodiments do not limit the present invention in any form. For those skilled in the art, any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a flow chart of segmented cultivation of the present invention.

[0029] Figure 2 This is a picture of flower bulbs grown in the open field.

[0030] Figure 3 This is a diagram of the flower heads cultivated in sections according to the present invention.

[0031] Figure 4 Picture of flower bulbs grown in pots. DETAILED DESCRIPTION

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

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

[0034] Embodiment 1 The method of cultivating colored cauliflower in sections of the present invention

[0035] The flow chart of the cultivation method of the present invention is shown in the attached Figure 1 .

[0036] The specific steps are as follows:

[0037] 1. Nutrition soil preparation: prepare the nutrition soil with garden soil, peat soil and vermiculite in a volume ratio of 5:3:1, add 2-4 kg of compound water-soluble fertilizer per cubic meter of nutrition soil (the nutrient ratio of nitrogen, phosphorus and potassium in the water-soluble fertilizer is 15:15:15), stir evenly and allow the nutrition soil to fully absorb water (fertilizers, fungicides, rooting powder, etc. are all purchased from Stanley Agricultural Group Co., Ltd.);

[0038] Garden soil should be free of pollution, pests and diseases, moderate in texture and good in fertility. The decomposed farmyard manure should be fully decomposed, with an organic matter content of 30% to 50%, a nitrogen content of 0.5% to 2.0%, a phosphorus content of 0.2% to 1.0%, a potassium content of 0.5% to 2.0%, a pH value of 6.0 to 7.5, and a water content of 30% to 40%. It should be air-dried before use. Peat soil should have good water retention, air permeability and fertility, with a pH value of 5.5 to 6.5. Choose vermiculite with a particle size of 2 to 4 mm.

[0039] 2. Seedling cultivation: Use greenhouse plug trays for seedling cultivation. Disinfect the plug trays with a 400-500-fold dilution of 50% carbendazim. After drying, spread nutrient soil and sow colored cauliflower seeds into the plug trays. During the seedling cultivation period, the greenhouse environment temperature is controlled at 20-25°C during the day and 10-15°C at night.

[0040] 3. Planting: Select fertile, loose and well-drained sandy loam and loam fields, apply basal fertilizer including 1000kg / mu of decomposed farmyard manure, 50kg / mu of 15:15:15 compound fertilizer of nitrogen, phosphorus and potassium, and 1-2kg / mu of boric acid, and plant the colored cauliflower seedlings in the field when they grow to four leaves and one heart, keeping the roots of the seedlings wrapped in the nutrient soil ball, with a spacing of 50×50cm, and water them thoroughly in time after planting;

[0041] 4. Field management: 7-10 days after planting, apply topdressing, 10-12 kg / mu of urea; 25-30 days after planting, apply 10-15 kg / mu of nitrogen, phosphorus and potassium 15:15:15 compound fertilizer; 45-50 days after planting, apply 8-10 kg / mu of potassium sulfate and 10-15 kg / mu of 15:15:15 compound fertilizer. Control the soil moisture at 60-75% according to the weather, do a good job of comprehensive pest and disease control, weeding and soil cultivation, and prepare for transplanting when the flower ball grows to a diameter of 6-8 cm;

[0042] 5. Promote rooting and bulbing before transplanting: 3 days before transplanting, use water-soluble fertilizer with nitrogen, phosphorus and potassium ratio of 10:5:18 and rooting powder of 1:800, and apply water-soluble fertilizer and rooting agent to the roots;

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

[0044] The preparation method of the curd protective agent is as follows: weigh 1.32 mg (ie 5 μmol) of ABA, then weigh 24 mg of selenoglucose, add to 700 ml of water and stir evenly, finally add 6 g of carboxymethyl chitosan, stir evenly and adjust the volume to 1 L.

[0045] Use a sprayer to evenly wet the flower balls, and use 45-55 ml of protective agent for each flower ball. The agent is evenly sprayed on the surface of the flower balls before transplanting the colored cauliflower to prevent the flower balls from losing vitality and losing their ornamental and edible value, and promote the good growth of the colored cauliflower during the potted period. The combination of agents can also improve the ornamental and nutritional value of the flower balls, wherein the concentration and ratio are determined through experimental optimization, which can effectively ensure the vigorous growth of the colored cauliflower plants, bright and full color of the flower balls, and high anthocyanin content.

[0046] Cut off all the leaves of the plant, leaving only the inner layer of leaves closest to the flower ball to protect the ball. Sterilize the scissors before use, and make a smooth cut without damaging the main stem;

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

[0048] 8. Transplantation: Transplantation should be carried out on a cloudy or sunny evening. Prepare a flower pot with a diameter of 30 to 40 cm, spread 5 to 7 cm of soil at the bottom of the flower pot, water the soil at the bottom of the cauliflower, and compact the soil around the cauliflower. When digging, keep the soil with a radius of 10 cm around the main root. The digging depth should be greater than the main root length to keep the root system as much as possible. Move the cauliflower into the flower pot with soil, try not to damage the roots, fill the surface of the flower pot with nutrient soil to make the surface flat and the cauliflower plant should be firmly attached to the wall of the flower pot to keep it upright without leaving any gaps. The various details and requirements of the transplanting operation ensure the integrity and adaptability of the plant during the transplanting process.

[0049] 9. Post-transplantation treatment: Leave in a cool place for 1 day;

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

[0051] Water management and nutrition management during potting period: Keep the soil in the pot wet when it is dry, water once a week, and water thoroughly at the roots of the plant, avoiding watering the flower bulbs and stems;

[0052] 10. Harvesting: Harvest when the flower ball grows to a diameter of 16 to 22 cm.

[0053] The beneficial effects of the present invention are specifically described below through test examples:

[0054] Experimental Example 1 Comparative Effects of Different Cultivation Methods

[0055] The seeds chosen are Amethyst No. 1. This variety of cauliflower has strong resistance to adversity and disease. The plant is upright, the leaves are dark green with wax powder, and the flower heads are round, plump and brightly colored.

[0056] 1. Three different cultivation methods

[0057] During planting, the variety was cultivated in the open field, the segmented cultivation of the present invention and the flower pot cultivation method. The cultivation conditions before transplanting were the same for the open field cultivation and the segmented cultivation (including the root promotion and bulb promotion treatment before transplanting). After the bulbs appeared, they were planted in the open field until they matured. The cultivation in the flower pot cultivation was based on a courtyard potted cauliflower technology (application number CN201510227263), and each planting method was repeated for 20 plants.

[0058] The segmented cultivation method of the present invention is as follows: according to the volume ratio of garden soil, peat soil and vermiculite of 5:3:1, 50kg, 30kg and 10kg are taken respectively to prepare nutrient soil, and water-soluble fertilizer with nitrogen, phosphorus and potassium in a ratio of 15:15:15 is used for spraying, and the water is stirred evenly to fully absorb water. Seedlings are raised in plug trays in the greenhouse, and when the seedlings grow to four leaves and one heart, they are planted in the field. During land preparation, fertilizers are deeply applied, with 1000kg / mu of base fertilizer, 40kg / mu of nitrogen, phosphorus and potassium compound fertilizer, 15-20kg / mu of superphosphate, 8-12kg / mu of urea, and 1-2kg / mu of boric acid. After planting, topdressing and fertilizing urea 10-12kg / mu, potassium sulfate 6-8kg / mu are mixed and flushed, and soil moisture is controlled at 70% according to the weather. Regular inspections are carried out to do a good job in comprehensive prevention and control of diseases and insect pests, inter-row cultivation and weeding, and soil cultivation. When the flower ball grows to 6-8cm, it is ready for transplanting.

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

[0060] On the day of transplanting, the curd protective agent of the present invention is used to evenly wet the curd, and all leaves of the plant are cut off, leaving only the inner leaf layer closest to the curd to protect the curd. The scissors are disinfected before use, and the incision is smooth without damaging the main stem. The plant wound healing agent is applied to the damaged part to promote wound recovery and prevent wound infection.

[0061] Transplanting should be carried out in the evening on a sunny day. Prepare a 35cm diameter flower pot, spread 5 to 7cm of prepared soil at the bottom of the flower pot, water the soil at the bottom of the cauliflower along the direction of the main root, compact the surrounding soil along the main root, use a shovel to take soil with a radius of 10cm along the main root direction, avoid damaging the roots when digging deep, take it out and put it in the flower pot to fix it with soil to make the plant upright, fill the gaps with nutrient soil and then spread another layer to make the surface flat and the cauliflower plant stick to the wall of the flower pot to keep it upright without leaving any gaps.

[0062] After transplanting, place the plants in a cool place for 1 day. After the seedlings have grown, place the plants in a cool and ventilated warehouse with a temperature not exceeding 25°C. Water the pot soil when it is dry and wet when it is wet. Water once a week. When watering, water the roots of the plants thoroughly and avoid watering the flower balls and stems. Harvest when the flower balls grow to a diameter of 16 to 22 cm.

[0063] 2. Comparison of different cultivation methods

[0064] The pictures of the flower balls of the three cultivation methods are shown in Figure 2-4 .

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

[0066] The growth period refers to the time from planting to harvesting. The bulb holding period refers to the time from the initial formation of the commodity bulb to the time when it maintains good commodity quality. The longer the bulb holding period, the longer farmers can market their products and the stronger their ability to resist market risks; the shorter the bulb holding period, the bulb will quickly mature and lose its commodity quality.

[0067] Table 1 Growth cycle and bulb holding period of pot cultivation, open field cultivation and segmented cultivation

[0068]

[0069] Table 2 Analysis of variance of growth cycle and bulb holding period of pot cultivation, open field cultivation and segmented cultivation

[0070]

[0071] Table 3 Multiple comparisons of growth cycle and bulb holding period of pot cultivation, open field cultivation and segmented cultivation

[0072]

[0073] *The significance level of the mean difference is 0.05

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

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

[0076] Among them, the colorimeter LAB color space 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 is green, positive is red), and b represents the component from blue to yellow (negative is blue, positive is yellow).

[0077] Table 4 Colorimeter values ​​and anthocyanin contents of pot cultivation, open field cultivation and segmented cultivation

[0078]

[0079] Table 5 Analysis of variance of colorimeter values ​​and anthocyanin content in pot cultivation, open field cultivation and segmented cultivation

[0080]

[0081] Table 6 Multiple comparisons of colorimeter values ​​and anthocyanin contents in pot cultivation, open field cultivation and segmented cultivation

[0082]

[0083] *The significance level of the mean difference is 0.05

[0084] It can be seen that the average LAB value of the segmented cultivation of the present invention is high in a value and low in b value, which is significantly different from the open field cultivation (uneven purple) and flower pot cultivation (light gray purple), and tends to be bright red purple. The anthocyanin content of the segmented cultivation of the present invention is much higher than that of the open field cultivation and flower pot cultivation, increasing by 18.2% and 98.6% respectively.

[0085] (3) Diameter, thickness and weight of flower balls under different cultivation methods: see Table 7, and difference analysis is shown in Tables 8-9.

[0086] Table 7 Diameter, thickness and weight of flower balls grown in pots, open fields and sections

[0087]

[0088] Table 8 Variance analysis of flower ball diameter, thickness and weight in pot cultivation, open field cultivation and segmented cultivation

[0089]

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

[0091]

[0092]

[0093] *The significance level of the mean difference is 0.05

[0094] It can be seen that the average diameter, thickness and weight of the flower curds cultivated in the segmented manner of the present invention are similar to those cultivated in the open field (no significant difference), but significantly higher than those cultivated in pots, with the weight increase reaching 79.17%.

[0095] The comparative analysis of the three cultivation methods clearly demonstrates the remarkable characteristics of the novel segmented cultivation of purple cauliflower in the present invention in terms of long bulb holding period, bright color and high anthocyanin content.

[0096] Test Example 2 Comparison of the use of the curd protective agent of the present invention

[0097] The variety selected was Amethyst No. 1, which was divided into 3 groups, A, B, and C, with 20 plants in each group. The nutrient soil configuration, seedling raising, planting, field management, root and bulb promotion before transplanting, leaf removal, wound treatment, and transplanting methods of each group were all carried out in accordance with the cultivation steps. After transplanting, the seedlings were left to stand for one day in the same cool and ventilated warehouse (about 15°C) to slow down the growth.

[0098] Among them, Group A did not use any flower bulb protective agent;

[0099] Group B used the commercially available Guoguang transpiration inhibitor (which is characterized by containing humic acid water-soluble fertilizer, humic acid>40g / L, nitrogen, phosphorus and potassium>200g / L), and diluted it 800-1000 times for spraying according to the product instructions;

[0100] Group C used the protective agent of the present invention to spray the flower heads.

[0101] After spraying different agents, the temperature and light management during the potting period, as well as the water and nutrition management during the potting period were the same as the cultivation steps. The growth status of the plants and the status of the flower heads were recorded respectively, as shown in Table 10.

[0102] Table 10 Flower curd conditions of three groups with different treatments

[0103]

[0104] Table 11 Analysis of variance of diameter, weight and anthocyanin in three groups with different treatments

[0105]

[0106] Table 12 Multiple comparisons of diameter, weight and anthocyanin in three groups with different treatments

[0107]

[0108] *The significance level of the mean difference is 0.05

[0109] The data of the flower heads were measured during the flower head expansion and holding periods. The growth conditions and flower head status of each group are as follows:

[0110] Group A: The plant growth trend is weak, the leaves are light green, lacking vitality and vigor. The development of the flower head is poor, and the diameter, weight, and anthocyanin content of the flower head are all low. The growth and color are also poor, the surface color of the flower head is dull, the texture is rough, there are a lot of wrinkles, the texture is loose, and the overall shape is not full and compact. In the subsequent growth process, the flower head loses water more seriously, is prone to wilting, has very weak resistance to diseases and pests, and has an extremely short shelf life. Its commerciality and ornamental value are at a low level, which makes it difficult to meet market demand and consumer expectations.

[0111] Group B: The growth of plants in this group has improved, but the growth is weak, and the leaves are light green. The diameter, weight, and anthocyanin content of the flower head are slightly better than those without the flower head protective agent. The color of the flower head has been brightened to a certain extent, and the surface is relatively smooth, but some minor unevenness can still be seen, and the texture is relatively soft. During the growth period, the fullness of the flower head is average, the stress resistance is weak, and the shelf life is extended, but there is still a significant gap compared with Group C. It can only reach a medium level in terms of commerciality and ornamental properties, and does not have a prominent advantage in market competition.

[0112] Group C: Using the protective agent of the present invention, the plants grew vigorously and the leaves were dark green. The flower heads were well developed, with high diameter and weight, and the anthocyanin content reached 1.43 mg / g, an increase of 60.67% compared with Group B. The flower heads were bright and beautiful in appearance, full and round in shape, smooth and shiny in surface, and firm and elastic in texture. During the potted maintenance stage, the plants showed strong resistance to diseases and pests, and could effectively resist interference from adverse external environments. At the same time, the shelf life was significantly extended, and it performed excellently in terms of commerciality and ornamental properties, which could well adapt to market demand and bring consumers a high-quality experience.

[0113] Through comprehensive observation, detailed records and precise data determination of the three groups A, B and C, it can be clearly seen that the treatment effect of group C (protectant of the present invention) after transplanting colored cauliflower is significantly better than that of groups A and B. Due to the lack of protective agent, the growth and development of plants and flower heads in group A are seriously restricted; although the commercially available products used in group B have improved the conditions of plants and flower heads to a certain extent, there is still a large gap compared with group C in multiple key indicators.

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

[0115] In summary, the cultivation method provided by the present invention can reduce wilting and yellowing after transplanting through a scientific segmented cultivation method, and the flower balls are plump and beautiful, bright in color and contain more nutrients such as anthocyanins, thereby solving the problems of high cost, difficult management and poor commercial quality of potted colored cauliflower; and people can enjoy the fun of potted flowers and fresh, green edible vegetables, bringing better visual and taste enjoyment.

Claims

1. A cauliflower curd protective agent, characterized in that: It is composed of ingredients in the following proportions: 4-6 μmol / L abscisic acid, 20-28 mg / L selenoglucose, and 5-7 g / L carboxymethyl chitosan.

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

3. Use of the cauliflower curd protective agent according to claim 1 or 2 in cauliflower cultivation.

4. A cauliflower cultivation method, characterized in that: It adopts segmented cultivation method, including the following steps: a. Raise cauliflower seedlings, plant them and grow them in the field; b. Transplanting: When the flower curd grows to a diameter of 6 to 8 cm, it is ready for transplanting. When transplanting, the flower curd protective agent according to claim 1 or 2 is first applied to the flower curd; c. Management after transplanting; d. Harvest.

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

6. The cultivation method according to claim 4, characterized in that: In step a: The seedling cultivation adopts greenhouse plug tray seedling cultivation, the plug tray is flatly covered with nutrient soil, and the cauliflower seeds are sown into the plug tray; Furthermore, the preparation method of the nutrient soil is as follows: first, garden soil, peat soil and vermiculite are mixed in a volume ratio of 5:3:1 to form basic nutrient soil, and then 2 to 4 kilograms of compound water-soluble fertilizer with a nitrogen, phosphorus and potassium ratio of 15:15:15 is added per cubic meter of basic nutrient soil, and the mixture is stirred evenly.

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

8. The cultivation method according to claim 4 or 7, characterized in that: In step b: Three days before the transplanting, root and bulb promotion treatments were performed as follows: Use water-soluble fertilizer with a nitrogen, phosphorus and potassium ratio of 10:5:18 and rooting powder of 1:800, and apply 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 the transplanting, the method also includes removing leaves and protecting wounds of the cauliflower.

10. The cultivation method according to any one of claims 4 to 9, characterized in that: In step d: the harvesting is performed when the curd diameter grows to 16 to 22 cm.

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