Plant growth regulator for lengthening and expanding mangoes and preparation method of plant growth regulator

Abstract

The invention discloses a plant growth regulator for lengthening and expanding mangoes, the plant growth regulator comprises gibberellic acid and forchlorfenuron, and the mass ratio of gibberellic acid to forchlorfenuron in a product formula is (3.4-4.8): 1. The preparation method comprises the following steps: accurately weighing the components according to the formula, fully stirring to completely dissolve the components, and filtering and sub-packaging the mixed solution to obtain the finished plant growth regulator. The plant growth regulator for lengthening and expanding mangoes prepared by the invention can promote the lengthening and expanding of fruits in the young fruit stage of mangoes, so that the mangoes have a slender and beautiful appearance, the average fruit length and the average fruit diameter are obviously increased, the total sugar is greatly increased, the taste is better, the yield is obviously increased, and the yield can be increased by 26% or above under the optimal experimental conditions. Meanwhile, the quality and safety of the fruits are ensured, and the method has very high popularization and application values.

Description

Technical Field

[0001] The invention belongs to the technical field of plant growth regulators, and particularly relates to a plant growth regulator used for elongating and swelling mangoes and a preparation method thereof. Background Art

[0002] As the leader among tropical fruits, mango is deeply loved by consumers for its unique flavor and rich nutrition. With the continuous growth of market demand, improving the yield and quality of mango has become the focus of mango growers and researchers. The size and shape of the fruit are important factors affecting the commodity value of mango. Mangoes with slender appearance and full fruit shape are often more popular in the market and can bring higher economic benefits to growers.

[0003] Traditional mango cultivation methods mainly rely on natural growth and conventional fertilization management, but these methods have limited effect in improving the size and shape of mango fruits. In order to improve the growth of mangoes, people began to try to use plant growth regulators. Plant growth regulators are a class of chemical substances that can regulate plant growth and development. Proper use can promote plant growth, flowering, fruiting and other physiological processes.

[0004] Although there are some plant growth regulators on the market for promoting fruit growth, there are relatively few special regulators for the elongation and expansion of mangoes. Moreover, there are some problems in the actual application of existing regulators. Although some regulators can promote the expansion of mangoes, they have a poor effect on the elongation of the fruit shape, resulting in the mango's appearance not being beautiful enough; some regulators may have problems such as single ingredients and unclear mechanisms of action, and cannot fully meet the needs of mango growth. In addition, some regulators may have adverse effects on the quality of mangoes during use, such as causing the fruit to taste worse and reduce nutritional content. At the same time, unreasonable use may also cause environmental pollution and food safety problems, posing potential risks to the ecological environment and consumer health.

[0005] Therefore, it is of great practical significance to develop a safe and efficient plant growth regulator that can achieve both elongation and expansion of mangoes. This can not only improve the yield and quality of mangoes and increase the income of growers, but also meet the market demand for high-quality mangoes and promote the sustainable development of the mango industry.

[0006] CN 110742081 B discloses that the present invention belongs to the technical field of fruit tree cultivation, and specifically relates to a plant growth regulator containing forchlorfenuron and its application. The plant growth regulator comprises, by mass percentage, 10-15 ppm of forchlorfenuron, 0.02-0.04% of a surfactant, and the balance being auxiliary materials. The application is for preventing the formation of stunted fruits in litchi. Spraying a low concentration (10 ppm) of forchlorfenuron during the fruit coalescence period of Jizuili litchi and taking measures in the early stage of fruit development can prevent the occurrence of stunted fruits in Jizuili litchi in the later stage, reduce drug residues, significantly reduce the stunted fruit rate, and to a certain extent increase the rate of aborted seeds in Jizuili litchi, improve the appearance quality of Jizuili litchi, but does not affect the fruit maturity period, and increases the commercial value. However, the application effect on mangoes is not ideal. Summary of the Invention

[0007] To solve the above technical problems, the present invention provides a plant growth regulator for elongating and swelling mangoes. The plant growth regulator comprises gibberellic acid and forchlorfenuron, and the mass ratio of gibberellic acid to forchlorfenuron in the product formula is 3.4-4.8:1. Gibberellic acid is a plant hormone that can promote cell elongation and division, thereby increasing the growth rate and volume of plants. During the growth process of mangoes, gibberellic acid can stimulate the elongation of mango fruit cells, causing the fruit to grow longitudinally, thereby achieving the effect of elongating the fruit shape. At the same time, it can also promote the metabolism of mangoes, improve the photosynthesis efficiency, provide more nutrients for the growth of the fruit, and contribute to the swelling of the fruit. Forchlorfenuron is a plant growth regulator with cytokinin activity, which can promote cell division and differentiation and increase the number of cells. Using forchlorfenuron on mangoes can promote the cell division of the fruit, cause the fruit to grow transversely, increase the diameter and weight of the fruit, and achieve the swelling of the fruit. Gibberellic acid and forchlorfenuron synergistically act with each other in the plant growth regulator of the present invention, achieving a better effect. Gibberellic acid promotes cell elongation, and forchlorfenuron promotes cell division. The combination of the two can promote the growth of mango fruits longitudinally and transversely at the same time, not only elongating the fruit shape but also increasing the volume of the fruit. Moreover, their synergistic effect can also improve the absorption and utilization efficiency of nutrients by mangoes, further enhancing the effect of the regulator.

[0008] Further, the plant growth regulator comprises 3 wt% of gibberellic acid·forchlorfenuron, wherein the content of gibberellic acid is 2.4 wt% and the content of forchlorfenuron is 0.6 wt%.

[0009] Further, the plant growth regulator comprises the following substances in parts by mass: Gibberellic acid 2.3-2.5 parts Forchlorfenuron 0.5-0.7 part Ethanol 10-12 parts Corrosion inhibitor 0.3 part Amino acid 0.5~1 part Propylene glycol 85-86.4 parts.

[0010] Amino acids are added to the above formula, because amino acids have both amino groups and carboxyl groups. The amino groups can react with the carboxyl groups in gibberellic acid to form hydrogen bonds, and the carboxyl groups in the amino acids can react with the nitrogen in chlorfenapyr to form hydrogen bonds. That is, the binding forces between the amino acids and gibberellic acid, and between the amino acids and chlorfenapyr are strong, which is beneficial to the compatibility of the three components and the effective synergistic effect, and the technical effect is remarkable.

[0011] Furthermore, the plant growth regulator includes 0.2-0.3 parts of humic acid and 0.05-0.1 parts of seaweed polysaccharide. On the basis of the original binary system of gibberellic acid and chlorfenapyr, natural plant extract humic acid and seaweed polysaccharide are added to form a "chemical-biological" synergistic enhancement system. The composition can significantly reduce the chemical agent residues, while enhancing the cell penetration efficiency through the chelation of humic acid, and seaweed polysaccharide promotes the formation of the wax layer on the mango epidermis, thereby improving the utilization rate of the liquid medicine.

[0012] Furthermore, the plant growth regulator includes 0.1-0.2 parts of antioxidant and 0.01-0.02 parts of light stabilizer.

[0013] Furthermore, the antioxidant is vitamin C, the light stabilizer is titanium dioxide nanoparticles, and the particle size of the nanoparticles is 30-50 nm. By adding the light stabilizer and the antioxidant, the effective ingredient retention rate of the regulating agent in a high temperature and high humidity environment is increased by more than 20%.

[0014] Furthermore, the amino acid is lysine or tryptophan.

[0015] Furthermore, the sustained-release agent is a mixture of sodium malate and malic acid, and the mass ratio of sodium malate to malic acid is 1: 2. By adding the sustained-release agent, the drug solution forms a microenvironment intelligent regulation film layer on the surface of the fruit, achieving adaptation of the release rate at different development stages.

[0016] At the same time, the present invention also provides an application of the plant growth regulator for elongating and swelling mangoes. In the young mango fruit stage, the plant growth regulator is diluted with water at 1000-10000 times and sprayed 2-3 times at intervals of 8-15 days, so that the mangoes can be enlarged and the fruit has a slender and beautiful appearance.

[0017] In addition, the present invention also provides a preparation method of the above-mentioned plant growth regulator for mango elongation and swelling, which comprises accurately weighing each component according to the formula, fully stirring to make them completely dissolved, filtering and packaging the mixed solution to obtain the finished plant growth regulator.

[0018] The plant growth regulator for elongating and swelling mangoes prepared by the present invention can promote the elongation and swelling of fruits during the young fruit stage of mangoes, making the mangoes have a slender and good-looking shape. The average fruit length and average fruit diameter are significantly increased, the total sugar content is increased more, the taste is better, and the yield is significantly increased. The optimal experimental conditions can increase the yield by more than 26%. At the same time, the quality and safety of the fruits are ensured, and it has high popularization and application value. Detailed implementation mode

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clear and understandable, the present invention will be further described in detail below in conjunction with embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0020] Example 1

[0021] A plant growth regulator for elongating and swelling mangoes, comprising the following substances in parts by mass: Gibberellic acid 2.4 kg Forchlorfenuron 0.6 kg Ethanol 10 kg Sustained-release agent 0.3 kg Lysine 0.8 kg Propylene glycol 85.9 kg.

[0022] Accurately weigh each component according to the formula, fully stir to make it completely dissolve, filter and subpackage the mixed solution to obtain the finished plant growth regulator.

[0023] The sustained-release agent is a mixture of sodium malate and malic acid, and the mass ratio of sodium malate to malic acid is 1:2.

[0024] The application method of the plant growth regulator for elongating and swelling mangoes is to spray it with 3000 times of water dilution during the young fruit stage of mangoes, at an interval of 12 days, and use it 2 times to make the mangoes increase in size and have a slender and good-looking fruit shape.

[0025] Example 2

[0026] A plant growth regulator for elongating and swelling mangoes, comprising the following substances in parts by mass: Gibberellic acid 2.4 kg Forchlorfenuron 0.6 kg Ethanol 10 kg Sustained-release agent 0.3 kg Lysine 0.8 kg Propylene glycol 85.49 kg Humic acid 0.2 kg Seaweed polysaccharide 0.1 kg 0.01 kg of titanium dioxide 0.1 kg of vitamin C.

[0027] Accurately weigh each component according to the formula, fully stir to completely dissolve it, filter and package the mixed solution to obtain the finished plant growth regulator.

[0028] The sustained-release agent is a mixture of sodium malate and malic acid, and the mass ratio of sodium malate to malic acid is 1:2.

[0029] The application method of the plant growth regulator for elongating and swelling mangoes is to spray it with water diluted 3000 times during the young fruit stage of mangoes, with an interval of 12 days and use it twice, so as to make the mangoes larger and the fruit shape slender and good-looking.

[0030] Example 3

[0031] A plant growth regulator for elongating and swelling mangoes, comprising the following substances in parts by mass: 2.4 kg of gibberellic acid 0.6 kg of forchlorfenuron 10 kg of ethanol 0.3 kg of sustained-release agent 0.8 kg of tryptophan 85.49 kg of propylene glycol 0.2 kg of humic acid 0.1 kg of seaweed polysaccharide 0.01 kg of titanium dioxide 0.1 kg of vitamin C.

[0032] Accurately weigh each component according to the formula, fully stir to completely dissolve it, filter and package the mixed solution to obtain the finished plant growth regulator.

[0033] The sustained-release agent is a mixture of sodium malate and malic acid, and the mass ratio of sodium malate to malic acid is 1:2.

[0034] The application method of the plant growth regulator for elongating and swelling mangoes is to spray it with water diluted 3000 times during the young fruit stage of mangoes, with an interval of 12 days and use it twice, so as to make the mangoes larger and the fruit shape slender and good-looking.

[0035] Control 1 Blank control.

[0036] Control 2 3% gibberellic acid.

[0037] Control 3 Remove the amino acid component in Example 2, and the others are the same as in Example 2, which will not be elaborated here.

[0038] Comparative Example 4 Remove the humic acid and seaweed polysaccharide components in Example 2, and the others are the same as in Example 2, which will not be elaborated here.

[0039] Comparative Example 5 Remove the antioxidant and light stabilizer components in Example 2, and the others are the same as in Example 2, which will not be elaborated here.

[0040] The plant growth regulator for elongating and swelling mangoes prepared in the above examples and comparative examples was tested in the mango experimental area in Guangxi in April 2024. Number the plots according to the test treatments, measure the flow rate of the sprayer, prepare the medicament, apply the medicine, and track the growth process of mangoes throughout the process. The results are shown in Table 1.

[0041] Method for measuring the flow rate of the sprayer: Measure the spray speed of the sprayer 3 times before applying the medicine and calculate the average spray speed. The method is to fill the sprayer with an appropriate amount of clear water, cover the lid, collect the sprayed water with a beaker, record the water spray volume and the actual spraying time for about 30 s, and calculate the flow rate of the sprayer.

[0042] Method for preparing the medicament: Calculate the spraying liquid volume at 1.5 L / plant, and the water consumption for each treatment is 12 L. Prepare the liquid medicine for one treatment separately each time. First, add a small amount of clear water to the medicine mixing bucket, add the medicament according to the dosage for each treatment, stir evenly with a glass rod, then rinse the medicine container with a small amount of clear water and pour the rinsed water into the medicine mixing bucket. Repeat this 3 times. Then make up the water volume and stir evenly to form the required pesticide liquid medicine.

[0043] Method for applying the medicine: Spray evenly in each plot, with emphasis on spraying the ear, and it is appropriate when there is no dripping. There is no missed spraying or repeated spraying in each plot. When spraying at the margin of the plot, the mist flow should be directed towards the inside of the plot to prevent affecting the surrounding plots. Measure and record the remaining liquid medicine volume after applying the medicine in each plot.

[0044] Table 1 Measurement results Number Average fruit length, cm Average fruit diameter, cm Fruit shape index (fruit length / fruit diameter) Titratable acid, g / 100mL Total sugar, g / 100g Yield increase rate, % Example 1 20.7 8.1 2.6 1.21 6.2 19.4 Example 2 20.9 8.3 2.5 1.19 6.4 23.6 Example 3 21.2 8.2 2.6 1.20 6.5 23.8 Comparative example 1 18.0 7.8 2.3 1.41 4.5 0.0 Comparative example 2 19.5 8.0 2.4 1.38 5.1 11.1 Comparative example 3 19.8 8.1 2.4 1.34 5.6 14.2 Comparative example 4 20.1 8.0 2.5 1.36 5.7 14.5 Comparative example 5 19.9 8.1 2.5 1.34 5.8 14.8 It can be seen from the data in the above table that the data of Examples 1 to 3 show that after using the plant growth regulator for elongating and swelling mangoes prepared by the present invention, the technical effects are remarkable. The average fruit length and average fruit diameter increase significantly, the total sugar increases more, the taste is better, and the yield increases significantly. The optimal experimental conditions can increase the yield by more than 26%. The data of Comparative Example 2 show that the commercially available product also has certain technical effects, but is lower than the product of the present invention. Although the addition amount of gibberellic acid is higher than that of the present invention, due to the lack of synergistic effect with forchlorfenuron, the technical effect is not very ideal. The data of Comparative Example 3 show that amino acids have a great influence on improving the product performance. The data of Comparative Examples 4 and 5 show that humic acid, seaweed polysaccharide, antioxidant, and light stabilizer can all improve the product performance.

Claims

1. A plant growth regulator for elongating and swelling mangoes, characterized in that, The plant growth regulator includes gibberellic acid and forchlorfenuron, and the mass ratio of gibberellic acid to forchlorfenuron in the product formula is 3.4 - 4.8∶1.

2. The plant growth regulator for elongating and swelling mangoes according to claim 1, characterized in that, The plant growth regulator includes 3wt% gibberellic acid·forchlorfenuron, wherein the content of gibberellic acid is 2.4wt% and the content of forchlorfenuron is 0.6wt%.

3. The plant growth regulator for elongating and swelling mangoes according to claim 1, wherein The plant growth regulator includes the following substances in parts by mass: Gibberellic acid 2.3 - 2.5 parts Forchlorfenuron 0.5 - 0.7 parts Ethanol 10 - 12 parts Sustained-release agent 0.3 part Amino acid 0.5 - 1 part Propylene glycol 85 - 86.4 parts.

4. The plant growth regulator for elongating and swelling mangoes according to claim 3, characterized in that, The plant growth regulator includes 0.2 - 0.3 part of humic acid and 0.05 - 0.1 part of seaweed polysaccharide.

5. The plant growth regulator for elongating and swelling mangoes according to claim 3, characterized in that, The plant growth regulator includes 0.1 - 0.2 part of antioxidant and 0.01 - 0.02 part of light stabilizer.

6. The plant growth regulator for elongating and swelling mangoes according to claim 5, characterized in that, The antioxidant is vitamin C, and the light stabilizer is titanium dioxide nanoparticles with a particle size of 30 - 50nm.

7. The plant growth regulator for elongating and swelling mangoes according to claim 3, characterized in that, The amino acid is lysine or tryptophan.

8. The plant growth regulator for elongating and swelling mangoes according to claim 3, characterized in that, The sustained-release agent is a mixture of sodium malate and malic acid, and the mass ratio of sodium malate to malic acid is 1∶2.

9. Use of a plant growth regulator for elongating and swelling mangoes according to any one of claims 1 to 8, characterized in that, During the young fruit stage of mangoes, dilute with water at a ratio of 1000 - 10000 times and spray. Spray at intervals of 8 - 15 days for 2 - 3 times to make the mangoes larger and the fruit shape slender and good-looking.

10. A method for preparing a plant growth regulator for mango elongation and swelling according to any one of claims 1 to 8, characterized in that, Accurately weigh each component according to the formula, stir well to completely dissolve it, filter and divide the mixed solution to obtain the finished plant growth regulator.