Dwarf close planting cultivation method for cherry tomatoes in arched shed

Abstract

The invention discloses an arched shed cherry tomato dwarfing close planting cultivation method, and belongs to the technical field of cherry tomato cultivation.The cultivation method comprises the steps of seedling cultivation, transplanting and field planting, dwarfing treatment, pruning, staged dynamic water control and the like. The cherry tomatoes are cultivated by combining methods such as multi-stem pruning and staged dynamic water control, the internode length of plants is effectively reduced, the fruit setting number is increased under the limited vine hanging height in an arched shed, the weight of a single fruit is reduced, the soluble solid content of the fruits is improved, the quality is improved under the condition that the yield of the cherry tomatoes is not reduced, and the refined development of the cherry tomatoes is promoted; the method has a good development prospect in the field of cherry tomato cultivation.

Description

Technical Field

[0001] The invention relates to the technical field of cherry tomato cultivation, and in particular to a dwarfing and densely planted cherry tomato cultivation method in an arch shed. Background Art

[0002] Cherry tomato (Lycopersicon esculentum var.cerasiforme A.Gray) is a cultivated variety of the genus Lycopersicon in the Solanaceae family. It is an annual or perennial vine herb. Cherry tomato is a small fruit with a small size, sweet taste, and rich nutrition. It contains a large amount of nutrients such as vitamin C, vitamin E, carotene, calcium, phosphorus, etc. It has the effect of promoting salivation and quenching thirst, and beautifying the skin. It is one of people's favorite fruits and has good edible and ornamental value.

[0003] Plant type, represented by plant height, is one of the important agronomic traits that affect crop yield, and the selection of ideal plant type is an important way to achieve simplified cultivation. Dwarfing treatment can reduce plant height, reduce vine labor costs and plant damage, increase the number of cherry tomatoes within the limited height of the facility, ensure yield and improve fruit quality. Recent studies have found that plant growth inhibitors can effectively prevent and control crop vigorous growth, promote crop height reduction, stem thickening, accelerate fruit formation, and increase yield. There are three main types of commonly used plant growth inhibitors: one is triazole vigor control drugs represented by paclobutrazol and chlormequat, which have the characteristics of strong medicinal properties and fast effects, but are prone to excessive control or drug damage; the second is quaternary ammonium salt vigor control drugs represented by chlormequat and chlormequat, which are characterized by mild medicinal properties, but slow effects, and poor control effects if the dosage is too small; another type is a new type of plant growth regulator-calcium procyclate. Calcium cyclohexadione can effectively shorten the internode length of plants, increase chlorophyll content, enhance photosynthesis, promote flower bud differentiation, improve fruit setting rate, promote fruit enlargement, sweeten and color, etc., and calcium cyclohexadione is an excellent growth control drug that controls branches and leaves but not flowers and fruits, has low toxicity, and hardly affects the next crop. Various types of growth control drugs, including paclobutrazol, are highly toxic, have large residual amounts, and have long residual periods. Therefore, calcium cyclohexadione has good application prospects in plant dwarfing treatment. However, calcium cyclohexadione is expensive, has a short half-life, and is easily decomposed and ineffective. Spraying calcium cyclohexadione by conventional methods will easily decompose and ineffective, and multiple spraying will increase manpower and financial costs. Summary of the invention

[0004] Based on the above technical problems, the purpose of the present invention is to provide a dwarfing and dense planting cultivation method for cherry tomatoes in an arch shed, so as to solve the problem that calcium prohexadione is easily decomposed and ineffective after being applied under the conventional method, thereby reducing the effect.

[0005] The present invention solves the above technical problems by the following technical means:

[0006] A dwarfing and dense planting cultivation method for cherry tomatoes in an arch shed, the cultivation method comprising the following steps:

[0007] (1) Seedling cultivation: peat, vermiculite, and perlite are mixed in a mass ratio of 7:2:1 to obtain a matrix, which is placed in a plug tray, and then cherry tomatoes are sown in the plug tray containing the matrix for seedling cultivation. When the seeds grow to 3 to 4 true leaves, the seedlings are obtained for transplanting;

[0008] (2) Transplanting and planting: From late March to early April, the seedlings are transplanted and planted after the soil is prepared and ridged in the arch shed;

[0009] (3) Dwarfing treatment: spray the regulator at a rate of 6-15 kg / mu before the cherry tomatoes bloom for dwarfing treatment;

[0010] (4) Pruning: The three-pole pruning method is used to prune the branches, retaining the side branches at the first and second spike nodes of the main vine, and removing the remaining side branches to increase the number of fruits and reduce the weight of each fruit;

[0011] (5) Dynamic water control in different stages: before harvesting each bunch of fruit, water is reduced to control water in order to increase the soluble solids content of the fruit;

[0012] (6) Harvesting: Harvest in batches according to the maturity of the fruit.

[0013] Further, the regulator comprises the following raw materials:

[0014] Prohexadione calcium, polyvinyl alcohol, 2,5-dihydroxybenzoic acid, coconut oil, asparagine, p-toluenesulfonic acid.

[0015] Further, the preparation method of the regulator is as follows:

[0016] A: Heat coconut oil to 30°C, stir and melt, then add prohexadione calcium, homogenize at 30°C and 800-1200 r / min for 10-15 min, place at 4°C to solidify, grind and sieve to obtain embedded microparticles;

[0017] B: Add water to dissolve polyvinyl alcohol to prepare a 2wt% polyvinyl alcohol solution, add asparagine and p-toluenesulfonic acid to the polyvinyl alcohol solution, heat to 40-50°C and stir to react for 4-6 hours, adjust the pH to 8.5-9.5 after the reaction is completed, then add 2,5-dihydroxybenzoic acid, stir to react at room temperature for 1-2 hours, then heat to 75-85°C and stir to react for 10-20 minutes to obtain a mixed colloid, put the embedded microparticles and the mixed colloid into a homogenizer, and homogenize at 10°C and 800-1200 r / min for 10-15 minutes to obtain a regulator.

[0018] Furthermore, in the step A, the mass ratio of coconut oil to prohexadione-calcium is (1-2):(0.06-0.1).

[0019] Furthermore, in step B, the mass ratio of the polyvinyl alcohol solution, asparagine, p-toluenesulfonic acid, and 2,5-dihydroxybenzoic acid is (6-14): (0.05-0.07): (0.01-0.02): (0.06-0.08).

[0020] Furthermore, in step B, the mass ratio of the mixed glue solution to the embedded microparticles is (6-14): (1-2).

[0021] Furthermore, the implantation operation in step (2) is specifically as follows:

[0022] After plowing the soil in the arch shed, apply 3000-5000kg / mu of decomposed livestock and poultry manure, and then add earthworm manure and oil cake residue at 200kg / mu respectively, and then make ridges. The ridges should be consistent with the longitudinal direction of the arch shed, with a center spacing of 1.6m, a ridge bottom width of 60-70cm, a ridge surface width of 40-50cm, and a ridge height of 15-20cm. Then, plant the seedlings in double rows at a density of 2500-2800 plants / mu.

[0023] Furthermore, the stage dynamic water control operation in step (5) is specifically as follows:

[0024] Before the first bunch of fruits sets, water thoroughly to keep the relative soil moisture content at 75% to 85%. Then reduce the amount of watering 5 to 7 days before harvesting each bunch of fruits to keep the relative soil moisture content at 50% to 60%.

[0025] Furthermore, the cultivation temperature in the cherry tomato greenhouse is 25-35°C during the day and 16-18°C at night.

[0026] Prohexadione calcium has a short half-life and is easily decomposed quickly in the soil and loses its efficacy. Directly spraying prohexadione calcium according to conventional methods will greatly shorten its action time and reduce its effect, while multiple spraying will greatly increase manpower and financial costs. Therefore, the present invention prepares prohexadione calcium into a regulator with a long-acting effect to treat tomato plants, combines the cultivation method to reduce the internode length and single fruit weight of tomatoes, increase the number of fruits and soluble sugar content, and realize the boutique cultivation of cherry tomatoes.

[0027] Specifically, the present invention first uses coconut oil to embed the effective ingredient calcium prohexadione to prepare embedded microparticles, and then mixes and homogenizes with polyvinyl alcohol glue so that the embedded microparticles are dispersed in the polyvinyl alcohol glue. After the regulator is sprayed, the polyvinyl alcohol glue in the regulator is viscous and thus carries the embedded microparticles to better adhere to the leaf surface of the plant. The coconut oil therein melts at a cultivation temperature of more than 25°C during the day to release the embedded calcium prohexadione, so that the tomato plant absorbs the calcium prohexadione to exert its effect. When the temperature at night drops to less than 18°C, the coconut oil solidifies and re-embeds and fixes the calcium prohexadione. The calcium prohexadione is fixed in the regulator system through repeated melting and solidification of the coconut oil, thereby inhibiting the loss of calcium prohexadione. While effectively protecting the calcium prohexadione, it is slowly released for a long time to act on the tomato plant, thereby prolonging the action time of the calcium prohexadione, improving the effect, and reducing the number of applications, thereby reducing manpower and financial costs.

[0028] In order to give full play to the effect of calcium prohexadione in the embedded microparticles, the present invention first uses asparagine to treat polyvinyl alcohol, adjusts the molecular structure of polyvinyl alcohol, and enhances the hydrogen bond binding force between polyvinyl alcohol and coconut oil in which the microparticles are embedded, thereby ensuring that the embedded microparticles are continuously and stably dispersed in the polyvinyl alcohol glue, and further adds 2,5-dihydroxybenzoic acid to react and bind with polyvinyl alcohol to increase the interaction between polyvinyl alcohol and the surface of leaves, thereby improving the adhesion of the polyvinyl alcohol glue on the surface of leaves, and by adjusting the interaction between the polyvinyl alcohol glue and the coconut oil in which the microparticles are embedded and between the polyvinyl alcohol glue and the leaves of the plant, the regulator can be continuously and stably attached to the surface of the tomato plant and release calcium prohexadione when the coconut oil melts during the day to exert its effect, effectively inhibit the synthesis of gibberellins, reduce the internode length, and improve the fruit setting rate.

[0029] Beneficial effects:

[0030] 1. The present invention cultivates cherry tomatoes in a large arch shed. In the cultivation process, double-row dense planting, staged water control, and regulator treatment are adopted to dwarf the tomato plants, increase the number of fruit-bearing ears at a limited height in the arch shed, increase the fruit-bearing amount, and reduce the weight of a single fruit. While ensuring the yield, the soluble sugar content can be increased, thereby realizing the boutique cultivation of cherry tomatoes, and having good development prospects.

[0031] 2. The present invention adopts a specific method to prepare the growth control agent calcium cyclohexadione into a regulator for spraying on cherry tomato plants, which effectively inhibits the decomposition and failure of calcium cyclohexadione, prolongs the action time, improves the effect, reduces manpower and financial costs, and has good application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 : Pictures of cherry tomatoes fruit setting in experimental group 1 of the present invention. DETAILED DESCRIPTION

[0033] The present invention will be described in detail below with reference to specific embodiments and accompanying drawings:

[0034] Example 1: Preparation of a regulator

[0035] A: Heat 1.5 kg coconut oil to 30°C, stir and melt, add 0.08 kg prohexadione calcium, then homogenize at 30°C and 1000 r / min for 12 min, place at 4°C to solidify, grind through a 200 mesh sieve to obtain embedded microparticles, and store at 4°C for later use;

[0036] B: Dissolve polyvinyl alcohol in water to prepare 10 kg of 2 wt% polyvinyl alcohol solution, add 0.06 kg of asparagine and 0.015 kg of p-toluenesulfonic acid to the polyvinyl alcohol solution, heat to 45 ° C and stir to react for 5 hours, adjust the pH to 9 after the reaction is completed, and then add 0.07 kg of 2,5-dihydroxybenzoic acid, stir to react at room temperature for 1.5 hours, then heat to 80 ° C and stir to react for 15 minutes to obtain a mixed colloid, put 1.5 kg of embedded microparticles and 10 kg of mixed colloid into a homogenizer, homogenize at 10 ° C and 1000 r / min for 12 minutes to obtain a regulator, and store in a refrigerator at 4 ° C.

[0037] Example 2: Preparation of Regulator II

[0038] A: Heat 1kg coconut oil to 30℃, stir and melt, add 0.06kg prohexadione calcium, then homogenize at 30℃ and 800r / min for 15min, place at 4℃ to solidify, grind through a 200-mesh sieve to obtain embedded microparticles, and store at 4℃ for later use;

[0039] B: Dissolve polyvinyl alcohol in water to prepare 6 kg of 2 wt% polyvinyl alcohol solution, add 0.057 kg of asparagine and 0.01 kg of p-toluenesulfonic acid to the polyvinyl alcohol solution, heat to 40°C and stir to react for 6 hours, adjust the pH to 8.5 after the reaction is completed, then add 0.06 kg of 2,5-dihydroxybenzoic acid, stir to react at room temperature for 1 hour, then heat to 75°C and stir to react for 20 minutes to obtain a mixed colloid, put 1 kg of embedded microparticles and 6 kg of the mixed colloid into a homogenizer, homogenize at 10°C and 800 r / min for 15 minutes to obtain a regulator, and store in a refrigerator at 4°C.

[0040] Example 3: Preparation of Regulator III

[0041] A: Heat 2kg coconut oil to 30℃, stir and melt, add 0.1kg prohexadione calcium, then homogenize at 30℃ and 1200r / min for 10min, place at 4℃ to solidify, grind through a 200-mesh sieve to obtain embedded microparticles, and store at 4℃ for later use;

[0042] B: Dissolve polyvinyl alcohol in water to prepare 14 kg of 2 wt% polyvinyl alcohol solution, add 0.07 kg of asparagine and 0.02 kg of p-toluenesulfonic acid to the polyvinyl alcohol solution, heat to 50°C and stir to react for 4 hours, adjust the pH to 9.5 after the reaction is completed, then add 0.08 kg of 2,5-dihydroxybenzoic acid, stir to react at room temperature for 2 hours, then heat to 85°C and stir to react for 10 minutes to obtain a mixed colloid, put 2 kg of embedded microparticles and 14 kg of the mixed colloid into a homogenizer, homogenize at 10°C and 1200 r / min for 10 minutes to obtain a regulator, and store in a refrigerator at 4°C.

[0043] Comparative Example 1: Preparation of Regulator

[0044] In contrast to Example 1, the only difference is that in the preparation of the regulator in Comparative Example 1, coconut oil is not used to embed the prohexadione calcium, as shown below:

[0045] Dissolve polyvinyl alcohol in water to prepare 10 kg of 2 wt% polyvinyl alcohol solution, add 0.06 kg of asparagine and 0.015 kg of p-toluenesulfonic acid to the polyvinyl alcohol solution, heat to 45 ° C and stir to react for 5 hours, adjust the pH to 9 after the reaction is completed, and then add 0.07 kg of 2,5-dihydroxybenzoic acid, stir to react at room temperature for 1.5 hours, then heat to 80 ° C and stir to react for 15 minutes to obtain a mixed glue solution, put 0.08 kg of calcium cyclohexadione and 10 kg of the mixed glue solution into a homogenizer, homogenize at 10 ° C and 1000 r / min for 12 minutes to obtain a regulator, and store in a refrigerator at 4 ° C.

[0046] Comparative Example 2: Preparation of Regulator

[0047] In contrast to Example 1, the only difference is that in Comparative Example 2, when preparing the regulator, asparagine is not added for reaction, as shown below:

[0048] A: Same as Example 1;

[0049] B: Dissolve polyvinyl alcohol in water to prepare 10 kg of 2 wt% polyvinyl alcohol solution, adjust the pH to 9, then add 0.07 kg of 2,5-dihydroxybenzoic acid, react at room temperature with stirring for 1.5 hours, then heat to 80°C and stir for 15 minutes to obtain a mixed colloid solution, put 1.5 kg of embedded microparticles and 10 kg of the mixed colloid solution into a homogenizer, homogenize at 10°C and 1000 r / min for 12 minutes to obtain a regulator, and store in a refrigerator at 4°C.

[0050] Comparative Example 3: Preparation of Regulator

[0051] In contrast to Example 1, the only difference is that in Comparative Example 3, 2,5-dihydroxybenzoic acid is not added during the preparation of the regulator, as shown below:

[0052] A: Same as Example 1;

[0053] B: Dissolve polyvinyl alcohol in water to prepare 10 kg of 2 wt% polyvinyl alcohol solution, add 0.06 kg of asparagine and 0.015 kg of p-toluenesulfonic acid to the polyvinyl alcohol solution, heat to 45°C and stir to react for 5 hours, after the reaction is completed, adjust the pH to 9, heat to 80°C and stir to react for 15 minutes to obtain a mixed colloid, put 1.5 kg of embedded microparticles and 10 kg of the mixed colloid into a homogenizer, homogenize at 10°C and 1000 r / min for 12 minutes to obtain a regulator, and store in a refrigerator at 4°C.

[0054] Comparative Example 4: Preparation of Regulator

[0055] In contrast to Example 1, the only difference is that in step B of preparing the regulator in Comparative Example 4, the pH is adjusted to 7, and the remaining steps are the same as in Example 1.

[0056] Comparative Example 5: Preparation of Regulator

[0057] In contrast to Example 1, the only difference is that in Comparative Example 5, the embedded microparticles are not placed in the mixed gel solution during the preparation of the regulator, but are directly placed in water, as shown below:

[0058] 1.5 kg of coconut oil was heated to 30°C, stirred and melted, and then 0.08 kg of calcium prohexadione was added, and then homogenized at 30°C and 1000 r / min for 12 min, and then placed at 4°C for solidification and ground through a 200-mesh sieve to obtain embedded microparticles. 1.5 kg of embedded microparticles and 10 kg of clean water were placed in a homogenizer, homogenized at 10°C and 1000 r / min for 12 min to obtain a regulator, and stored in a refrigerator at 4°C.

[0059] Example 4: Arch shed cherry tomato dwarfing and dense planting cultivation method

[0060] (1) Seedling cultivation: peat, vermiculite, and perlite are mixed in a mass ratio of 7:2:1 to obtain a matrix, which is loaded into a plug tray, and then cherry tomatoes are sown in the plug tray containing the matrix for seedling cultivation, and are managed and maintained according to conventional methods. When the seedlings grow to 3 to 4 true leaves, the seedlings are obtained for transplanting;

[0061] (2) Transplanting and planting: In early April, the soil in the arch shed was plowed and 4000 kg / mu of decomposed livestock and poultry manure was applied. Then, 200 kg / mu of earthworm manure and oil cake residue were added to form ridges. The ridges were in line with the longitudinal direction of the arch shed, with a center spacing of 1.6 m, a ridge bottom width of 60 cm, a ridge surface width of 40 cm, and a ridge height of 15 cm. When transplanting, double rows were planted at a distance of about 30 cm between plants. The planting density was 2800 plants / mu. The temperature in the shed was maintained at 26°C during the day and 17°C at night.

[0062] (3) Dwarfing treatment: spray the regulator prepared according to the method of Example 1 at a rate of 8 kg / mu before cherry tomatoes bloom for dwarfing treatment;

[0063] (4) Pruning: The three-pole pruning method is used to prune the branches, retaining the side branches at the first and second spike nodes of the main vine, and removing the remaining side branches to increase the number of fruits and reduce the weight of each fruit;

[0064] (5) Dynamic water control in different stages: Before the first bunch of fruits sets, water the fruit sufficiently to keep the soil relative moisture content at about 80%. Reduce the amount of watering 5 days before the first bunch of fruits is harvested to keep the soil relative moisture content at 55% to increase the soluble solid content of the fruit.

[0065] (6) Harvesting: Harvest in batches according to the maturity of the fruit.

[0066] Experiment: Experiment on high-density dwarfing and high-sugar cultivation method of cherry tomatoes

[0067] 1. Experimental method: The regulators prepared in Example 1 and Comparative Examples 1 to 5 were used to carry out an arch shed cherry tomato cultivation experiment, which was carried out in Jinji Town, Litong District, Wuzhong City, Ningxia. The experiment was divided into 9 groups, experimental group 1, control groups 1 to 7, and a blank control group. The regulators and cultivation methods used in each group were as follows:

[0068] Experimental group 1: using the regulator of Example 1 and the cultivation method of Example 4;

[0069] Control groups 1 to 5: using the regulators of comparative examples 1 to 5 and the cultivation method of embodiment 4 respectively;

[0070] Control group 6: The regulator prepared in Example 1 was used, and the planting density was reduced to 2200 plants / mu during transplanting, and the remaining steps were the same as those in Example 4;

[0071] Control group 7: The regulator prepared in Example 1 was used, and the soil moisture content was kept at 80% instead of stage water control during cultivation;

[0072] Blank control group: No regulator was sprayed, but clean water was sprayed, the planting density was 2200 plants / mu, no stage water control was performed, but the soil moisture content was always maintained at 80%, and the other cultivation steps were the same as Example 4.

[0073] 2. Result detection: The number of cherry tomato fruits in each group was recorded. After harvest, the internode length (the distance between 9 to 10 leaves) and single fruit weight, soluble solids and soluble sugar content of each group of tomato plants were detected. The experiment was repeated three times and the average data were shown in Table 1.

[0074] Table 1

[0075]

[0076] According to the data analysis in Table 1:

[0077] (1) Cultivating cherry tomatoes according to the method of the present invention can effectively reduce the internode length of the plant, reduce the weight of a single fruit, increase the number of fruits, increase the soluble solid content, and increase the soluble sugar content, and can better achieve the development of high-quality cherry tomato fruits.

[0078] (2) In the control group 1, when preparing the regulator, coconut oil was not used to embed calcium cyclohexadione, and the effective ingredient calcium cyclohexadione was lost in large amounts, resulting in poor effect. The tomato internode length increased, further affecting the fruit setting rate. In the control group 2, when preparing the regulator, asparagine was not added to treat polyvinyl alcohol, and the fixation effect of polyvinyl alcohol glue on the embedded particles embedded in coconut oil was reduced, which led to an increase in the loss of internal calcium cyclohexadione, reducing the effect, the internode length was high, and the fruit setting rate was reduced. In the control group 3, when preparing the regulator, 2,5-dihydroxybenzoic acid was not used to treat polyvinyl alcohol, and the adhesion of polyvinyl alcohol in the control group 3 to the leaf surface was poor, which led to the loss and failure of the regulator, reducing the effect of the regulator. In the control group 4, when preparing the regulator, the pH was adjusted to 7, and the stability of calcium cyclohexadione in a neutral environment was reduced, thereby reducing its effect. In the control group 5, when preparing the regulator, the embedded particles were directly placed in water, and the regulator was on the leaf surface and easily lost, greatly reducing the effect of the effective ingredient calcium cyclohexadione.

[0079] (3) In the control group 6, the density of cherry tomatoes was reduced and the weight of single fruit increased. In the control group 7, the water content of the substrate soil was kept high instead of stage water control during the cultivation of cherry tomatoes. The soluble solids content and soluble sugar content of the fruit decreased significantly.

[0080] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions of the present invention, which should be included in the scope of the claims of the present invention. The techniques, shapes, and structural parts not described in detail in the present invention are all known technologies.

Claims

1. A method for dwarfing and densely planting cherry tomatoes in an arch shed, characterized in that: The method comprises the following steps: (1) Seedling cultivation: cherry tomatoes are sown in a plug tray filled with a substrate for seedling cultivation, and when they grow 3 to 4 true leaves, the seedlings are obtained for transplanting; (2) Transplanting and planting: From late March to early April, the seedlings are transplanted and planted after the soil is prepared and ridged in the arch shed; (3) Dwarfing treatment: spray the regulator at a rate of 6-15 kg / mu before the cherry tomatoes bloom for dwarfing treatment; (4) Pruning: Pruning is performed using the three-pole pruning method, retaining the side branches at the first ear node and the second ear node of the main vine, and removing the remaining side branches; (5) Dynamic water control in stages: reduce the amount of watering before harvesting each bunch of fruit to control water; (6) Harvesting: Harvest in batches according to the maturity of the fruit.

2. A dwarfing and dense planting cultivation method for cherry tomatoes in an arch shed according to claim 1, characterized in that: The conditioning agent comprises the following raw materials: Prohexadione calcium, polyvinyl alcohol, 2,5-dihydroxybenzoic acid, coconut oil, asparagine, p-toluenesulfonic acid.

3. A dwarfing and dense planting cultivation method for cherry tomatoes in an arch shed according to claim 2, characterized in that: The preparation method of the regulator is as follows: A: Heat coconut oil to 30°C, stir and melt, then add prohexadione calcium, homogenize at 30°C and 800-1200 r / min for 10-15 min, place at 4°C to solidify, grind and sieve to obtain embedded microparticles; B: Add water to dissolve polyvinyl alcohol to prepare a 2wt% polyvinyl alcohol solution, add asparagine and p-toluenesulfonic acid to the polyvinyl alcohol solution, heat to 40-50°C and stir to react for 4-6 hours, adjust the pH to 8.5-9.5 after the reaction is completed, then add 2,5-dihydroxybenzoic acid, stir to react at room temperature for 1-2 hours, then heat to 75-85°C and stir to react for 10-20 minutes to obtain a mixed colloid, put the embedded microparticles and the mixed colloid into a homogenizer, and homogenize at 10°C and 800-1200 r / min for 10-15 minutes to obtain a regulator.

4. A dwarfing and dense planting cultivation method for cherry tomatoes in an arch shed according to claim 3, characterized in that: In the step A, the mass ratio of coconut oil to prohexadione calcium is (1-2): (0.06-0.1).

5. A dwarfing and dense planting cultivation method for cherry tomatoes in an arch shed according to claim 4, characterized in that: In the step B, the mass ratio of the polyvinyl alcohol solution, asparagine, p-toluenesulfonic acid and 2,5-dihydroxybenzoic acid is (6-14): (0.05-0.07): (0.01-0.02): (0.06-0.08).

6. A dwarfing and dense planting cultivation method for cherry tomatoes in an arch shed according to claim 5, characterized in that: In the step B, the mass ratio of the mixed glue solution to the embedded microparticles is (6-14): (1-2).

7. A dwarfing and dense planting cultivation method for cherry tomatoes in an arch shed according to claim 6, characterized in that: The specific implantation operation in step (2) is as follows: The soil in the arch shed is plowed, and ridges are formed after applying decomposed livestock and poultry manure, earthworm fertilizer and oil cake residue. The ridge forming direction is consistent with the longitudinal direction of the arch shed, the ridge center spacing is 1.6m, the ridge bottom width is 60-70cm, the ridge surface width is 40-50cm, and the ridge height is 15-20cm. Then the seedlings are planted in double rows at a density of 2500-2800 plants / mu.

8. The method for dwarfing and densely planting cherry tomatoes in an arch shed according to claim 7, characterized in that: The dynamic water control operation in step (5) is specifically as follows: Before the first bunch of fruits sets, water thoroughly to keep the relative soil moisture content at 75% to 85%. Then reduce the amount of watering 5 to 7 days before each bunch of fruits is harvested to keep the relative soil moisture content at 50% to 60%.

9. The method for dwarfing and densely planting cherry tomatoes in an arch shed according to claim 8, characterized in that: The cultivation temperature in the cherry tomato arch shed is 25-35°C during the day and 16-18°C at night.

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