A Citrus Cultivation Method and Application for Enhancing the Medicinal Efficacy of Tangerine Peel

Abstract

This invention relates to the field of citrus cultivation technology, and discloses a method and application for enhancing the medicinal efficacy of dried tangerine peel in citrus cultivation, including the following processing steps: 1) adding a soil conditioner to adjust the soil pH value, and after the soil acidification adjustment is completed, adding green manure; 2) using a foliar inhibitor to block harmful substances in the soil; 3) applying a functional foliar fertilizer, wherein the functional foliar fertilizer is prepared by adding selenium, sodium, sulfur, chlorine and malt powder to the foliar inhibitor, and the content of selenium after addition is: 0.8-1.5 mg / kg, sodium content is: 0.5-1.0 g / L, sulfur content is: 0.5-1.0 g / L, chlorine content is: 0.5-1.0 g / L, silicon content is: 80-120 g / L, and malt powder content is 5-10 g / L. This invention focuses on three main aspects: soil problems, fruit tree growth, and the medicinal effects of dried tangerine peel. It has developed and applied spraying techniques to improve the fruit yield and increase the fruit tree’s fruit production rate. It has also enriched the fruit trees with selenium and enhanced the medicinal effects of dried tangerine peel, with the content of ferulic acid increasing by 77%.

Description

Technical Field

[0001] This invention relates to the field of citrus cultivation technology, and in particular to a method and application for enhancing the medicinal efficacy of dried tangerine peel. Background Technology

[0002] Citrus fruits, belonging to the Rutaceae family, are a general term encompassing oranges, tangerines, mandarins, kumquats, pomelos, and trifoliate oranges. Dried tangerine peel (chenpi) is the dried, mature peel of the citrus fruit and its cultivated varieties. The citrus genus is an evergreen small tree or shrub, cultivated in hilly areas, low mountains, along rivers and lakes, or on plains, distributed in regions south of the Yangtze River. The fruit is harvested from October to December when ripe, the peel is removed, and then dried in the shade or in a well-ventilated area. For medicinal use, aged citrus peel is considered superior, hence the name "chenpi" (aged peel).

[0003] In recent years, the quality, yield, and medicinal efficacy of dried tangerine peel have all declined significantly. It is understood that this is due to farmers' pursuit of high yields, leading to the unscientific and systematic addition of various fertilizers, resulting in soil acidification, compaction, low fertilizer utilization, and soil pollution. This not only reduces yield but also lowers quality. While some existing technologies exist to improve soil quality and restore healthy plant growth, such as Chinese invention patent applications with publication numbers CN108901234A, CN109251111A, and CN111527976A, and some selenium-rich citrus cultivation techniques, such as publication numbers CN111943756A and CN111527963A, a technology to enhance the medicinal efficacy of dried tangerine peel is still lacking. Summary of the Invention

[0004] The purpose of this invention is to provide a method for cultivating selenium-enriched citrus that can enhance the medicinal efficacy of dried tangerine peel, and to provide at least one beneficial option or create conditions to solve one or more technical problems existing in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution.

[0006] A method for improving the medicinal efficacy of citrus cultivation, characterized by the following steps: 1) Soil remediation: adding soil conditioner to adjust the soil pH value; after soil acidification adjustment, adding green manure (purple clover) and rapeseed flowers to consolidate the soil and prevent soil erosion; 2) Applying foliar inhibitors: using foliar inhibitors to block harmful substances in the soil, allowing citrus trees to grow vigorously; 3) Applying functional foliar fertilizer: the functional foliar fertilizer is prepared by adding selenium, sodium, sulfur, chlorine and malt powder to the foliar inhibitor. After addition, the selenium content is 0.8-1.5 mg / kg, the sodium content is 0.5-1.0 g / L, the sulfur content is 0.5-1.0 g / L, the chlorine content is 0.5-1.0 g / L, the silicon content is 80-120 g / L, and the malt powder content is 5-10 g / L. It should be noted that selenium, sodium, sulfur, and chlorine can be obtained by adding the corresponding water-soluble inorganic substances or by adding nanoparticles.

[0007] More preferably, the main component of the soil conditioner is slaked lime, used to adjust the soil pH to 5.5-6.5. Before adjusting the soil pH, purple clover green manure plants are planted to increase the soil organic matter, and then the soil composition is measured and an appropriate amount of slaked lime is added to adjust the soil pH.

[0008] More preferably, the method of applying the green manure is as follows: allow the green manure to grow to 30±5cm, and then plow the green manure into the soil.

[0009] More preferably, the leaf surface inhibitor is a leaf surface inhibitor with a silicon content ≥100g / L. Depending on the actual needs, 4-10g of soluble zinc, 10-30g of soluble potassium, and 10-30g of surfactant may also be added to each L of leaf surface inhibitor.

[0010] More preferably, the foliar inhibitor is applied as follows: using a drone for foliar spraying, only one side of the leaf needs to be moistened; spraying time: spraying before the flowering period of citrus trees, one spray is sufficient, choose a sunny or cloudy afternoon for spraying; dosage: dilute with water according to the dosage per acre, 450-550ml diluted with water at a ratio of 1:8-12 for foliar spraying.

[0011] More preferably, the application method of the functional foliar fertilizer is as follows: use a drone for foliar spraying, only wetting one side of the leaves; spraying time: spray during the young fruit stage and the fruit enlargement stage of citrus trees, spraying three times, once during the young fruit stage, once during the fruit enlargement stage, and once 10 days before harvest; choose a sunny or cloudy afternoon for spraying; dosage: dilute with water according to the dosage per acre, 450-550ml diluted with water at a ratio of 1:8-12 for foliar spraying.

[0012] On the other hand, the present invention also provides a dried tangerine peel, which is made from tangerines grown using the tangerine cultivation method described above.

[0013] The above describes the applications of dried tangerine peel in traditional Chinese medicine and tea.

[0014] The present invention adopts the above technical solution and has at least the following technical effects or advantages.

[0015] This invention addresses three key aspects: soil issues, fruit tree growth, and the medicinal properties of dried tangerine peel. It involves targeted research and development of spraying techniques that solve problems such as soil acidification, soil compaction, soil erosion, and declining soil fertility. This improves fruit yield, increases fruit tree productivity, and enriches the fruit trees with selenium. Furthermore, it enhances the medicinal properties of dried tangerine peel, increasing the ferulic acid content by 77%. Thus, it solves three major problems for dried tangerine peel growers: ① low soil fertility, ② low fruit yield, and ③ poor quality of dried tangerine peel. Detailed Implementation

[0016] To facilitate a better understanding of the essence of the present invention by those skilled in the art, the specific embodiments of the present invention are described in detail below.

[0017] A method for cultivating citrus fruits to enhance the medicinal efficacy of dried tangerine peel involves the following processing steps.

[0018] 1) Soil Remediation: A soil conditioner is added to adjust the soil pH. After the soil acidification is adjusted, green manure, such as milkvetch and rapeseed, is added to consolidate the soil and prevent soil erosion. The main component of the soil conditioner is slaked lime, which is used to adjust the soil pH to 5.5-6.5. Before adjusting the soil pH, milkvetch green manure plants are planted to increase the soil organic matter. After soil samples are collected and analyzed, an appropriate amount of slaked lime is added to adjust the soil pH, which is very suitable for conditioning different geological soils. The green manure is applied by allowing it to grow to about 30 cm, then tilling it into the soil.

[0019] Due to soil acidification, a soil conditioner was added to reduce soil acidification and adjust the soil pH. After the soil acidification was adjusted, green manure was added to increase the organic matter in the soil, making the soil fertile and thus restoring the tangerine peel trees to a healthy growth state.

[0020] 2) Applying Foliar Control Agents: Foliar control agents are used to block harmful substances in the soil, allowing the tangerine peel trees to grow healthily. The main component of these agents is silicon. Using an agent with a silicon content ≥100g / L, diluted at a ratio of 1:10 (by volume), a drone is used for foliar spraying. This allows the plants to better absorb silicon from the leaf cell walls. Because silicon molecules are large, they can remove large-molecule pollutants while the plant absorbs nutrients, thus preventing the plant from absorbing pollutants from the soil. However, because organic matter and other nutrients have small molecules, the plant can still absorb them, thus blocking the absorption of harmful elements from the soil. Applying foliar control agents can improve the problem of unhealthy tangerine peel tree development caused by excessive fertilizer use due to unscientific land management.

[0021] 3) Apply functional foliar fertilizer: In order to significantly enhance the efficacy of dried tangerine peel, the trace element selenium was first added to the silicon content. Drones were used for foliar spraying to bring the selenium into the plant and allow it to be absorbed and converted into organic selenium. Organic selenium makes the plant stronger, enabling it to resist pests and diseases through its own immune system and enhance its ability to absorb soil nutrients, resulting in faster growth, larger and thicker leaves. Through stronger photosynthesis, the oranges grown are larger, resulting in thicker orange peels and a higher yield of dried tangerine peel.

[0022] Because ferulic acid, a component of dried tangerine peel, has anticoagulant, anti-inflammatory, and analgesic effects in medicine, and in cosmetic medicine, it can reduce fine lines, tighten skin, and provide sun protection, improvements were made to enhance ferulic acid content. Trace elements sodium, sulfur, chlorine, and malt powder were added to the foliar fertilizer. The concentrations were: selenium 0.8-1.5 mg / kg, sodium 0.5-1.0 g / L, sulfur 0.5-1.0 g / L, chlorine 0.5-1.0 g / L, silicon 80-120 g / L, and malt powder 5-10 g / L. The fertilizer was sprayed three times during the young fruit stage and the fruit enlargement stage of the tangerines, using a drone for application. The drone's atomization effect, combined with the nano-silicon in the foliar fertilizer, allowed for better absorption by the plants, resulting in dried tangerine peel that was not only rich in selenium but also had increased ferulic acid content.

[0023] This invention addresses three key aspects: soil problems, fruit tree growth, and the medicinal properties of dried tangerine peel. It involves targeted research and development of spraying technology that solves problems such as soil acidification, soil compaction, soil erosion, and declining soil fertility. This improves fruit yield and increases fruit tree productivity, while also enriching the fruit trees with selenium. Furthermore, it enhances the medicinal properties of dried tangerine peel, with a 77% increase in ferulic acid content, yielding excellent results. Thus, it solves three major problems for dried tangerine peel growers: ① low soil fertility, ② low fruit yield, and ③ poor peel quality.

[0024] Example 1

[0025] A method for cultivating citrus fruits to enhance the medicinal efficacy of dried tangerine peel includes the following processing steps.

[0026] 1) Soil conditioner application method: First, plant milkvetch green manure plants to increase soil organic matter. Then, collect soil samples for analysis and add an appropriate amount of slaked lime to adjust the soil pH. Add slaked lime as the soil conditioner to adjust the soil pH to 6.0. After the soil acidification adjustment is completed, intercrop milkvetch and rapeseed. When the plants grow to 30±5cm, plow the milkvetch and rapeseed into the soil.

[0027] 2) Leaf surface inhibitor and its application method: The amount of soluble silicon in the selected leaf surface inhibitor is 150g / L.

[0028] ① Spraying time: Spray before the orange trees start to bloom. One spray is sufficient. Choose a sunny or cloudy day around 4 pm for spraying.

[0029] ② Dosage: Dilute with water according to the dosage per acre. Dilute 500ml with water at a ratio of 1:10 and spray on the leaves until the leaves are dripping wet.

[0030] ③ Application method: A drone is required for atomized spraying, ensuring even spraying on every leaf of the orange tree. Note that only one side of the leaf should be moistened; do not wet both sides. This is because both sides of the leaf have pores that need to breathe. Spraying both sides can easily clog the pores due to the nano-silicon, preventing the leaves from breathing and thus hindering normal growth, resulting in slow tree growth and a reduced fruit yield.

[0031] 3) Application method of functional foliar fertilizer: Add selenium, sodium, sulfur, chlorine and malt powder to the foliar inhibitor to form a functional foliar fertilizer. After addition, the content of selenium in the functional foliar fertilizer is 1 mg / kg, sodium is 0.8 g / L, sulfur is 0.6 g / L, chlorine is 0.6 g / L, silicon is 100 g / L and malt powder is 8 g / L.

[0032] ① Spraying time: Spray during the young fruit stage and the fruit enlargement stage of orange trees. Three sprays are required: one spray during the young fruit stage, one spray at the beginning of the fruit enlargement stage, and one spray 10 days before harvest. Choose a sunny or cloudy day around 4 pm for spraying.

[0033] ② Dosage: Dilute with water according to the dosage per acre. Dilute 500ml with water at a ratio of 1:10 and spray on the leaves until the leaves are dripping wet.

[0034] ③ Application Method: A drone is required for atomized spraying, ensuring even coverage on every leaf and fruit of the orange tree. Only one side of the leaf should be moistened; do not wet both sides. This is because both sides of the leaves have pores that need to breathe. Spraying both sides can clog the pores due to the nano-silicon, preventing respiration and hindering normal growth. This can lead to slow tree growth and reduced fruit yield.

[0035] Example 2

[0036] A method for cultivating citrus fruits to enhance the medicinal efficacy of dried tangerine peel includes the following processing steps.

[0037] 1) Soil conditioner application method: First, plant milkvetch green manure plants to increase soil organic matter. Then, collect soil samples for analysis and add an appropriate amount of slaked lime to adjust the soil pH. Add slaked lime as the soil conditioner to adjust the soil pH to 5.5. After the soil acidification adjustment is completed, intercrop milkvetch and rapeseed. When the plants grow to 30±5cm, plow the milkvetch and rapeseed into the soil.

[0038] 2) Leaf surface inhibitor and its application method: The amount of soluble silicon in the selected leaf surface inhibitor is 100g / L.

[0039] ① Spraying time: Spray before the orange trees start to bloom. One spray is sufficient. Choose a sunny or cloudy day around 4 pm for spraying.

[0040] ② Dosage: Dilute with water according to the dosage per acre. 450ml is diluted with water at a ratio of 1:8 for foliar spraying, with the principle of dripping water onto the leaves.

[0041] ③ Application method: A drone is required for atomized spraying. Ensure that the spray is evenly applied to each leaf of the orange tree. Note that only one side of the leaf needs to be moistened, not both sides.

[0042] 3) Application method of functional foliar fertilizer: Add selenium, sodium, sulfur, chlorine and malt powder to the foliar inhibitor to form a functional foliar fertilizer. After addition, the content of selenium in the functional foliar fertilizer is 0.8 mg / kg, sodium is 1.0 g / L, sulfur is 0.5 g / L, chlorine is 0.5 g / L, silicon is 120 g / L and malt powder is 10 g / L.

[0043] ① Spraying time: Spray during the young fruit stage and the fruit enlargement stage of orange trees. Three sprays are required. Choose a sunny or cloudy day around 4 pm for spraying.

[0044] ② Dosage: Dilute with water according to the dosage per acre. 550ml is diluted with water at a ratio of 1:12 for foliar spraying, with the principle of dripping water onto the leaves.

[0045] ③ Application method: A drone is required for atomized spraying. Ensure that the spray is evenly applied to every leaf and fruit of the orange tree. Note that only one side of the leaf needs to be moistened, not both sides.

[0046] Example 3

[0047] A method for cultivating citrus fruits to enhance the medicinal efficacy of dried tangerine peel includes the following processing steps.

[0048] 1) Soil conditioner application method: First, plant milkvetch green manure plants to increase soil organic matter. Then, collect soil samples for analysis and add an appropriate amount of slaked lime to adjust the soil pH. Add slaked lime as the soil conditioner to adjust the soil pH to 6.5. After the soil acidification adjustment is completed, intercrop milkvetch and rapeseed. When the plants grow to 30±5cm, plow the milkvetch and rapeseed into the soil.

[0049] 2) Leaf surface inhibitor and its application method: The selected leaf surface inhibitor is soluble silicon at a concentration of 200g / L.

[0050] ① Spraying time: Spray before the orange trees start to bloom. One spray is sufficient. Choose a sunny or cloudy day around 4 pm for spraying.

[0051] ② Dosage: Dilute with water according to the dosage per acre. 550ml is diluted with water at a ratio of 1:12 for foliar spraying, with the principle of dripping water onto the leaves.

[0052] ③ Application method: A drone is required for atomized spraying. Ensure that the spray is evenly applied to each leaf of the orange tree. Note that only one side of the leaf needs to be moistened, not both sides.

[0053] 3) Application method of functional foliar fertilizer: Add selenium, sodium, sulfur, chlorine and malt powder to the foliar inhibitor to form a functional foliar fertilizer. After addition, the content of selenium in the functional foliar fertilizer is 1.0 mg / kg, sodium is 0.5 g / L, sulfur is 1.0 g / L, chlorine is 1.0 g / L, silicon is 80 g / L and malt powder is 5 g / L.

[0054] ① Spraying time: Spray during the young fruit stage and the fruit enlargement stage of orange trees. Three sprays are required. Choose a sunny or cloudy day around 4 pm for spraying.

[0055] ② Dosage: Dilute with water according to the dosage per acre. 450ml is diluted with water at a ratio of 1:8 for foliar spraying, with the principle of dripping water onto the leaves.

[0056] ③ Application method: A drone is required for atomized spraying. Ensure that the spray is evenly applied to every leaf and fruit of the orange tree. Note that only one side of the leaf needs to be moistened, not both sides.

[0057] Comparative Experiment 1.

[0058] The citrus planting method in the experimental area was basically the same as that in Example 1, except that conventional fertilization was used and no functional foliar fertilizer was added.

[0059] Comparative Experiment 2.

[0060] The citrus planting method in the experimental area is basically the same as that in Example 1, except that the functional foliar fertilizer is a foliar silicon fertilizer that does not contain selenium.

[0061] The selenium content in each type of dried tangerine peel was tested according to the national standard GB 5009.93-2010, and the ferulic acid content in each type of dried tangerine peel was tested by an external testing agency (the mixture was extracted with organic solvent, concentrated and diluted to a fixed volume, filtered through a microporous membrane, and then determined by high performance liquid chromatography with external standard method for quantification). The test results are shown in Table 1.

[0062] Table 1. Comparison of components of citrus fruits harvested using different planting methods after being processed into dried tangerine peel.

[0063] Selenium content (mg / kg) Ferulic acid content (mg / kg) Experimental Zone No. 1 0 7.38 mg / kg Experimental Zone No. 2 0 8.97 mg / kg Experimental Zone No. 3 0.444 mg / kg 13.1 mg / kg .

[0064] As can be seen from Table 1, the citrus fruits grown using the planting method of the present invention can effectively improve the selenium enrichment effect of dried tangerine peel after processing, and the medicinal effects of dried tangerine peel are also significantly improved, with the content of ferulic acid increasing by 77%.

[0065] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0066] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Parts not described in the specific embodiments are all prior art or common knowledge.

[0067] It should also be noted that the detailed description of preferred embodiments and included examples in the description of this invention facilitate a better understanding of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art. In case of any discrepancy, the definitions in this specification shall prevail.

[0068] In this invention, the term "prepared from" is synonymous with "comprising". The terms "comprising", "including", "having", "containing", or any other variations thereof, as used in this invention, are intended to cover non-exclusive inclusion. For example, a composition, step, method, article, or apparatus comprising the listed elements is not necessarily limited to those elements, but may include other elements not expressly listed or elements inherent to such a composition, step, method, article, or apparatus.

[0069] In this invention, when a quantity, concentration, or other value or parameter is expressed as a range, a preferred range, or a range defined by a series of upper and lower preferred values, this should be understood as specifically disclosing all ranges formed by any pair of any upper or preferred value with any lower or preferred value, regardless of whether the range is disclosed individually. For example, when the range “1 to 5” is disclosed, the described range should be interpreted as including ranges “1 to 4”, “1 to 3”, “1 to 2”, “1 to 2 and 4 to 5”, “1 to 3 and 5”, etc. When numerical ranges are described in this invention, unless otherwise stated, the range is intended to include its endpoints and all integers and fractions within that range.

[0070] Furthermore, the indefinite articles “a” and “an” preceding the elements or components of this invention do not impose any limitation on the quantity requirement (i.e., the number of times) of the elements or components. Therefore, “an” or “a” should be interpreted as including one or at least one, and the singular form of an element or component also includes the plural form, unless the quantity clearly refers to the singular form.

Claims

1. A method for cultivating citrus fruits to increase the ferulic acid content in dried tangerine peel, characterized in that, The following processing steps are included: 1) Soil remediation: Add soil conditioner to adjust the soil pH value. The main component of the soil conditioner is slaked lime. Add the soil conditioner to adjust the soil pH value to 5.5-6.

5. Before adjusting the soil pH, plant milkvetch green manure plants to increase the soil organic matter. Then, collect soil samples for analysis and add an appropriate amount of slaked lime to adjust the soil pH. After the soil acidification adjustment is completed, add milkvetch green manure and rapeseed flowers to consolidate the soil and prevent soil erosion. 2) Apply foliar inhibitors: Use foliar inhibitors to block harmful substances in the soil, allowing citrus trees to grow vigorously; the foliar inhibitors are those with a silicon content ≥100g / L. 3) Application of functional foliar fertilizer: The functional foliar fertilizer is prepared by adding selenium, sodium, sulfur, chlorine and malt powder to the foliar inhibitor. After addition, the selenium content is 0.8-1.5 mg / kg, the sodium content is 0.5-1.0 g / L, the sulfur content is 0.5-1.0 g / L, the chlorine content is 0.5-1.0 g / L, the silicon content is 80-120 g / L, and the malt powder content is 5-10 g / L. The method for spraying the foliar inhibitor is as follows: use a drone to spray the leaves, only wetting one side of the leaves; spraying time: spray before the flowering period of citrus trees, spray once, and choose a sunny or cloudy afternoon for spraying. Dosage: Dilute with water according to the dosage per acre, 450-550ml at a ratio of 1:8-12 for foliar spraying; The application method for the functional foliar fertilizer is as follows: use a drone for foliar spraying, only wetting one side of the leaves; spraying time: spray during the young fruit stage and the fruit enlargement stage of citrus trees, spraying three times, once during the young fruit stage, once during the fruit enlargement stage, and once 10 days before harvest; choose a sunny or cloudy afternoon for spraying. Dosage: Dilute with water according to the dosage per acre, 450-550ml at a ratio of 1:8-12 for foliar spraying.

2. The citrus cultivation method for increasing the ferulic acid content in tangerine peel according to claim 1, characterized in that, The method for applying the green manure is as follows: allow the green manure to grow to 30±5cm, and then plow it into the soil.

3. A type of dried tangerine peel, characterized in that, Made from citrus fruits grown using the citrus cultivation method described in any one of claims 1-2.

4. The application of dried tangerine peel in traditional Chinese medicine and tea as described in claim 3.