Amino acid water-soluble fertilizer for preventing fruit cracking and preparation method thereof

Abstract

The application discloses an amino acid water-soluble fertilizer for preventing fruit cracking and a preparation method thereof, and belongs to the technical field of fertilizers.The amino acid water-soluble fertilizer for preventing fruit cracking is prepared from ternary compound fertilizer, a calcium source, a magnesium source, compound amino acid, trace elements and an additive, wherein the ternary compound fertilizer is helpful to promoting the healthy growth of apple trees and improving the quality of fruits; the calcium source is used for providing calcium elements, so as to avoid the fruit cracking caused by the calcium deficiency of fruits in the late growth period; the magnesium source is helpful to maintaining the balance of the growth rates of fruit pulp and fruit skin and reducing the occurrence of fruit cracking; the compound amino acid can improve the absorption and utilization of calcium and magnesium elements by the fruit trees, effectively reduces the antagonism between elements, and thus reduces the fruit cracking rate; reasonable supplement of trace elements can reduce the fruit cracking of the fruit trees; the additive can strengthen the absorption of calcium elements by the fruit trees, promote the growth of the fruit trees and improve the yield of the fruit trees; the several components jointly act to effectively reduce the fruit cracking rate and simultaneously improve the yield of the fruit trees.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of fertilizers, and particularly relates to an amino acid water-soluble fertilizer for preventing fruit cracking and a preparation method thereof. BACKGROUND

[0002] Fruit cracking is a phenomenon that easily occurs in the growth and development process of fruits, and occurs in fruit trees such as citrus, apple, pear, peach, pomegranate and cherry. Fruit cracking is a physiological disease, and occurs in the whole growth and development process from fruit swelling to maturity. Apple is the second largest fruit tree in terms of planting area and yield in China, and fruit cracking seriously restricts the development of the apple planting industry. Calcium is an important component of cell wall synthesis, and can form corresponding calcium salts with pectinase, thereby enhancing the elasticity of the cell wall, so that the fruit skin is not easy to crack. However, there is often a problem of low calcium content in the later growth period of the fruit, at which time fruit cracking will obviously increase.

[0003] At present, measures such as spraying calcium fertilizer, reasonable shaping and pruning, and controlling yield are generally used for the prevention and treatment of apple cracking, but the measures such as shaping and pruning, and controlling yield are not ideal in reducing the cracking rate in actual production due to high technical level, difficulty in controlling yield, and the like. Although spraying calcium fertilizer is relatively simple and easy to master, it needs to strictly control the application period, fertilizer composition and proportion to be effective.

[0004] Therefore, there is an urgent need for a fertilizer that is convenient to use and can significantly reduce the cracking rate of apples to solve the above technical problems. SUMMARY

[0005] To solve the above technical problems, the application provides an amino acid water-soluble fertilizer for preventing fruit cracking and a preparation method thereof.

[0006] To achieve the above purpose, the application provides the following technical solutions.

[0007] The application provides an amino acid water-soluble fertilizer for preventing fruit cracking, which comprises the following raw materials in parts by weight:

[0008] 30-50 parts of ternary compound fertilizer, 8-15 parts of calcium source, 8-15 parts of magnesium source, 5-12 parts of compound amino acid, 3-8 parts of trace element and 5-10 parts of additive;

[0009] The compound amino acid comprises glycine, phenylalanine, aspartic acid, isoleucine and butyric acid.

[0010] Preferably, the mass ratio of the glycine, phenylalanine, aspartic acid, isoleucine and butyric acid is (2-6) :(5-12) :(1-3) :(1-5) :(3-7).

[0011] Preferably, the mass ratio of N, P and K in the ternary compound fertilizer is 1:(1-2):(2-4).

[0012] Preferably, the calcium source comprises one or more of calcium nitrate, calcium sulfate, calcium acetate, calcium glycinate and calcium phosphate.

[0013] Preferably, the magnesium source comprises one or more of magnesium sulfate, magnesium nitrate, magnesium chloride and potassium magnesium sulfate.

[0014] Preferably, the trace elements comprise one or more of ferrous sulfate, copper sulfate, manganese sulfate, zinc sulfate and manganese sulfate.

[0015] Preferably, the additives comprise lactic acid, acetic acid and citric acid.

[0016] Preferably, the mass ratio of lactic acid, acetic acid and citric acid is (3-7):(2-6):(2-6).

[0017] The application also provides a preparation method of the amino acid water-soluble fertilizer for preventing fruit cracking as described in the technical solution, comprising the following steps:

[0018] The calcium source, magnesium source, compound amino acid, trace elements and additives are mixed and heated to obtain a mixture; and the obtained mixture and ternary compound fertilizer are respectively crushed and then uniformly mixed to obtain the amino acid water-soluble fertilizer for preventing fruit cracking.

[0019] Preferably, the heating temperature is 30-40 DEG C and the heating time is 30-50 min.

[0020] Compared with the prior art, the application has the following advantages and technical effects:

[0021] The amino acid water-soluble fertilizer for preventing fruit cracking is prepared by using ternary compound fertilizer, calcium source, magnesium source, compound amino acid, trace elements and additives as raw materials, wherein the ternary compound fertilizer is used to provide nitrogen, phosphorus and potassium required by apples in different growth stages, which helps to promote the healthy growth of apple trees and improve the quality of fruits; the calcium source is used to provide calcium elements to avoid fruit cracking in the late growth stage due to calcium deficiency; the magnesium source helps to maintain the balance of the growth rate of pulp and peel and reduce the occurrence of fruit cracking; the compound amino acid can complex Ca 2+ and Mg 2+ in the fertilizer, which increases the activity of calcium and magnesium, effectively reduces the antagonism between elements, improves the absorption and utilization of calcium and magnesium elements by the fruit trees, promotes the growth of the root system of the fruit trees and improves the absorption and utilization of calcium elements in the soil by the fruit trees, thereby reducing the fruit cracking rate; the reasonable supplement of trace elements can reduce fruit cracking of the fruit trees; the additives can strengthen the absorption of calcium elements by the fruit trees, promote the growth of the fruit trees and improve the yield of the fruit trees; the combined action of the several components effectively reduces the fruit cracking rate and improves the yield of the fruit trees.

[0022] The amino acid water-soluble fertilizer for preventing fruit cracking provided by the present application is a water-soluble fertilizer, which has the advantages of small dosage, convenient use, low use cost, fast absorption by crops, and high utilization rate of nutritional components. The water-soluble fertilizer is a quick-acting fertilizer, which can enable the grower to see the effect and performance of the fertilizer relatively quickly. Moreover, the application method of the water-soluble fertilizer is very simple, which can be applied with irrigation water in irrigation modes including sprinkling irrigation and drip irrigation, thereby saving water, fertilizer, and labor. At the same time, since the water-soluble fertilizer can be irrigated with water, the application of the fertilizer is extremely uniform, which lays a solid foundation for improving yield and quality. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0024] In order to make the above-mentioned objects, features, and advantages of the present application more apparent and easy to understand, the present application will be further described in detail below with specific embodiments.

[0025] The present application provides an amino acid water-soluble fertilizer for preventing fruit cracking, which comprises the following raw materials in parts by weight:

[0026] 30-50 parts of ternary compound fertilizer, 8-15 parts of calcium source, 8-15 parts of magnesium source, 5-12 parts of compound amino acid, 3-8 parts of trace elements, and 5-10 parts of additive;

[0027] The compound amino acid comprises glycine, phenylalanine, aspartic acid, isoleucine, and butyric acid.

[0028] In a preferred embodiment, the amino acid water-soluble fertilizer for preventing fruit cracking comprises 30-50 parts of ternary compound fertilizer, preferably 33-46 parts by weight. The ternary compound fertilizer in the present application is used to provide nitrogen, phosphorus, and potassium required by apples in different growth stages, which helps to promote the healthy growth of apple trees and improve the quality of fruits.

[0029] In a preferred embodiment, the mass ratio of N, P, and K in the ternary compound fertilizer is 1:(1-2):(2-4). The present application adopts ternary compound fertilizer with a high content of potassium elements, which can meet the demand for potassium elements in the middle and late growth stages of fruit trees, especially in the fruit swelling stage, and also can promote the accumulation of calcium ions, thereby reducing fruit cracking.

[0030] In the preferred embodiment, the water-soluble amino acid fertilizer for preventing fruit cracking comprises 8-15 parts of calcium source, preferably 10-14 parts by weight. Calcium element is an important component of cell wall synthesis, can form corresponding calcium salt with pectinase, and can enhance the elasticity of cell wall, so that the fruit skin is not easy to crack. The present application provides calcium element by adding appropriate amount of calcium source, to avoid calcium deficiency of fruit in the late growth stage and cause fruit cracking.

[0031] In the preferred embodiment, the calcium source comprises one or more of calcium nitrate, calcium sulfate, calcium acetate, calcium glycinate, and calcium phosphate, preferably one or more of calcium sulfate, calcium acetate, and calcium glycinate.

[0032] In the preferred embodiment, the water-soluble amino acid fertilizer for preventing fruit cracking comprises 8-15 parts of magnesium source, preferably 10-14 parts by weight. Magnesium element is related to the level of plant endogenous hormones, and affects the coordination of flesh and skin growth rate. The present application helps to maintain the balance of flesh and skin growth rate by adding appropriate amount of magnesium source, to reduce the occurrence of fruit cracking.

[0033] In the preferred embodiment, the magnesium source comprises one or more of magnesium sulfate, magnesium nitrate, magnesium chloride, and potassium magnesium sulfate, preferably one or more of magnesium sulfate, magnesium nitrate, and potassium magnesium sulfate.

[0034] In the preferred embodiment, the water-soluble amino acid fertilizer for preventing fruit cracking comprises 5-12 parts of complex amino acid, preferably 6-10 parts by weight. The complex amino acid in the present application can complex Ca 2+ and Mg 2+ , increase the activity of calcium and magnesium, effectively reduce the antagonism between elements, improve the absorption and utilization of calcium and magnesium elements by fruit trees, promote the growth of fruit tree roots, and improve the absorption and utilization of calcium elements in the soil by fruit trees, thereby achieving the effect of effectively preventing fruit cracking.

[0035] In the preferred embodiment, the complex amino acid comprises glycine, phenylalanine, aspartic acid, isoleucine, and butyric acid. The present application adds glycine, phenylalanine, aspartic acid, isoleucine, and butyric acid at the same time, which can complex with calcium element to form a complex with stable chemical properties, is more easily absorbed by fruit trees, improves the utilization rate of calcium element, reduces the antagonistic effect between elements, effectively prevents fruit cracking, and on the other hand, can improve the mobility of calcium element in fruit trees, accelerate the conduction and transportation of calcium element, and thus promote the absorption of calcium element by fruit trees, thereby preventing fruit cracking.

[0036] In the preferred embodiment, the mass ratio of the glycine, phenylalanine, aspartic acid, isoleucine and butyric acid is (2-6):(5-12):(1-3):(1-5):(3-7), preferably (3-5):(6-10):(1-3):(2-5):(4-7).

[0037] In the preferred embodiment, the water-soluble amino acid fertilizer for preventing fruit cracking contains 3-8 parts of trace elements, preferably 4-7 parts by weight. The lack of trace elements will aggravate the occurrence of fruit cracking. The present application can alleviate the fruit cracking of fruit trees by reasonably supplementing trace elements.

[0038] In the preferred embodiment, the trace elements include one or more of ferrous sulfate, copper sulfate, manganese sulfate, zinc sulfate and manganese sulfate; further preferably, the trace elements include ferrous sulfate, copper sulfate, manganese sulfate, zinc sulfate and manganese sulfate in a mass ratio of (4-8):(1-3):(2-6):(3-8):(2-6).

[0039] In the preferred embodiment, the water-soluble amino acid fertilizer for preventing fruit cracking contains 5-10 parts of additives, preferably 6-9 parts by weight. The additives in the present application can enhance the absorption of calcium elements by fruit trees, promote the growth of fruit trees and improve the yield of fruit trees.

[0040] In the preferred embodiment, the additives include lactic acid, acetic acid and citric acid. The lactic acid and acetic acid in the present application can promote the absorption of potassium by fruit trees, and the acetic acid can also enhance the absorption of calcium, iron and other nutrients by fruit tree leaves. The citric acid can complex Ca 2+ and Mg 2+ in the fertilizer, and the combination of the components can reduce the fruit cracking rate of fruit trees.

[0041] In the preferred embodiment, the mass ratio of the lactic acid, acetic acid and citric acid is (3-7):(2-6):(2-6), preferably (4-6):(3-5):(3-5).

[0042] The present application also provides a preparation method of the water-soluble amino acid fertilizer for preventing fruit cracking as described in the above technical solutions, which comprises the following steps:

[0043] The calcium source, magnesium source, compound amino acid, trace elements and additives are mixed and heated to obtain a mixture; the obtained mixture and the ternary compound fertilizer are respectively crushed and then uniformly mixed to obtain the water-soluble amino acid fertilizer for preventing fruit cracking.

[0044] The present application promotes the complexation between the calcium source, magnesium source, trace elements, compound amino acid and additives by heating, reduces the antagonistic effect between the elements, and then uniformly mixes the ternary compound fertilizer, so as to obtain the water-soluble amino acid fertilizer which can effectively prevent fruit cracking.

[0045] In the preferred embodiment, the heating temperature is 30-40℃ and the heating time is 30-50min. The present application controls the heating temperature and time in the above range to avoid the invalidation of the effective components in the additive caused by too high temperature and too long time.

[0046] In the preferred embodiment, the use method of the amino acid water-soluble fertilizer for preventing fruit cracking comprises diluting the amino acid water-soluble fertilizer for preventing fruit cracking with water to 500-800 times for use as flush application or foliar fertilizer, or diluting with water to 800-1000 times for use as drip irrigation fertilizer.

[0047] In the embodiments of the present application, the unit "parts" represents "parts by weight" unless otherwise specified.

[0048] In the embodiments of the present application, the raw materials are purchased through the market route unless otherwise specified.

[0049] Example 1

[0050] An amino acid water-soluble fertilizer for preventing fruit cracking is composed of the following raw materials by weight:

[0051] 35 parts of ternary compound fertilizer, 11 parts of calcium sulfate, 9 parts of magnesium sulfate, 7 parts of compound amino acid, 4 parts of trace elements and 8 parts of additive;

[0052] The mass ratio of N, P and K in the ternary compound fertilizer is 1:1:2; the compound amino acid is composed of glycine, phenylalanine, aspartic acid, isoleucine and butyric acid with a mass ratio of 3:7:2:3:5; the trace elements are composed of ferrous sulfate, copper sulfate, manganese sulfate, zinc sulfate and manganese sulfate with a mass ratio of 6:1:3:4:2; and the additive is composed of lactic acid, acetic acid and citric acid with a mass ratio of 5:3:3.

[0053] The preparation method of the amino acid water-soluble fertilizer for preventing fruit cracking is as follows:

[0054] The calcium sulfate, magnesium sulfate, compound amino acid, trace elements and additive are mixed and heated at 35℃ for 40min to obtain a mixture; the obtained mixture and the ternary compound fertilizer are respectively crushed by a crusher and then passed through a 100-mesh sieve; then all the crushed materials are added into a mixing blender and mixed and stirred at room temperature for 5min to obtain the amino acid water-soluble fertilizer for preventing fruit cracking.

[0055] Example 2

[0056] An amino acid water-soluble fertilizer for preventing fruit cracking is composed of the following raw materials by weight:

[0057] 43 parts of ternary compound fertilizer, 13 parts of calcium glycinate, 12 parts of potassium magnesium sulfate, 10 parts of compound amino acid, 5 parts of trace elements and 7 parts of additive;

[0058] The mass ratio of N, P, and K in the ternary compound fertilizer is 1:2:3; the compound amino acid is composed of glycine, phenylalanine, aspartic acid, isoleucine, and butyric acid with a mass ratio of 4:8:2:3:5; the trace elements are composed of ferrous sulfate, copper sulfate, manganese sulfate, zinc sulfate, and manganese sulfate with a mass ratio of 6:2:4:5:3; and the additive is composed of lactic acid, acetic acid, and citric acid with a mass ratio of 5:3:4;

[0059] The preparation method of the amino acid water-soluble fertilizer for preventing fruit cracking is the same as that in Example 1.

[0060] Example 3

[0061] An amino acid water-soluble fertilizer for preventing fruit cracking is composed of the following raw materials in parts by weight:

[0062] The ternary compound fertilizer is 30 parts, the calcium sulfate is 15 parts, the magnesium nitrate is 8 parts, the compound amino acid is 5 parts, the trace elements are 3 parts, and the additive is 5 parts.

[0063] The mass ratio of N, P, and K in the ternary compound fertilizer is 1:1:2; the compound amino acid is composed of glycine, phenylalanine, aspartic acid, isoleucine, and butyric acid with a mass ratio of 6:12:1:2:5; the trace elements are composed of ferrous sulfate, copper sulfate, manganese sulfate, zinc sulfate, and manganese sulfate with a mass ratio of 6:1:3:5:4; and the additive is composed of lactic acid, acetic acid, and citric acid with a mass ratio of 4:5:3.

[0064] The preparation method of the amino acid water-soluble fertilizer for preventing fruit cracking is the same as that in Example 1.

[0065] Example 4

[0066] An amino acid water-soluble fertilizer for preventing fruit cracking is composed of the following raw materials in parts by weight:

[0067] The ternary compound fertilizer is 50 parts, the calcium glycinate is 15 parts, the magnesium sulfate is 10 parts, the compound amino acid is 12 parts, the trace elements are 6 parts, and the additive is 10 parts.

[0068] The mass ratio of N, P, and K in the ternary compound fertilizer is 1:1:3; the compound amino acid is composed of glycine, phenylalanine, aspartic acid, isoleucine, and butyric acid with a mass ratio of 2:12:3:2:6; the trace elements are composed of ferrous sulfate, copper sulfate, manganese sulfate, zinc sulfate, and manganese sulfate with a mass ratio of 4:2:6:8:3; and the additive is composed of lactic acid, acetic acid, and citric acid with a mass ratio of 7:2:4.

[0069] The preparation method of the amino acid water-soluble fertilizer for preventing fruit cracking is the same as that in Example 1.

[0070] Example 5

[0071] The amino acid water-soluble fertilizer for preventing fruit cracking is prepared from the following raw materials in parts by weight:

[0072] The ternary compound fertilizer is composed of 38 parts of calcium acetate, 14 parts of potassium sulfate, 12 parts of potassium magnesium sulfate, 11 parts of compound amino acid, 7 parts of trace element and 8 parts of additive.

[0073] The mass ratio of N, P and K in the ternary compound fertilizer is 1:1:4; the compound amino acid is composed of glycine, phenylalanine, aspartic acid, isoleucine and butyric acid with a mass ratio of 5:9:3:3:4; the trace element is composed of ferrous sulfate, copper sulfate, manganese sulfate, zinc sulfate and manganese sulfate with a mass ratio of 7:2:4:6:6; and the additive is composed of lactic acid, acetic acid and citric acid with a mass ratio of 3:3:3.

[0074] The preparation method of the amino acid water-soluble fertilizer for preventing fruit cracking is the same as that in Example 1.

[0075] Comparative Example 1

[0076] The difference from Example 2 is that the compound amino acid is omitted, and the others are the same as those in Example 2.

[0077] Comparative Example 2

[0078] The difference from Example 2 is that the additive is omitted, and the others are the same as those in Example 2.

[0079] Comparative Example 3

[0080] The difference from Example 2 is that the compound amino acid is composed of glycine, phenylalanine and aspartic acid with a mass ratio of 3:10:4, and the others are the same as those in Example 2.

[0081] Comparative Example 4

[0082] The difference from Example 2 is that the compound amino acid is composed of phenylalanine, isoleucine and butyric acid with a mass ratio of 7:4:6, and the others are the same as those in Example 2.

[0083] Comparative Example 5

[0084] The difference from Example 2 is that the additive is composed of lactic acid and acetic acid with a mass ratio of 1:1, and the others are the same as those in Example 2.

[0085] Comparative Example 6

[0086] The difference from Example 2 is that the additive is composed of lactic acid and citric acid with a mass ratio of 1:1, and the others are the same as those in Example 2.

[0087] The test was carried out in 2023-2024 in Lushun District, Dalian City, the soil type of the test was brown soil, the pH value of the plough layer soil was 7.9, the organic matter was 14.6 g / kg, the available potassium was 2.27 g / kg, the available phosphorus was 1.05 g / kg, and the alkali-hydrolysis nitrogen was 1.03 g / kg. The test object was Red Fuji apple, the test orchard was 0.3 hm 2 , 4 rows of 88 fruit trees, the plant spacing was 4x6 m, the tree age was 12 years, and the 88 fruit trees were divided into 11 groups.

[0088] Fertilization scheme: the water-soluble fertilizer in examples 1-5 and comparative examples 1-6 was diluted by 800 times, and foliar and fruit surface spraying was carried out, during which normal weeding was carried out, the spraying time was 15 days after full flowering, apple fruit setting began, spraying was carried out every 10 days, a total of 3 times. After the apple matured, the total fruit number and the number of split fruits were counted and the split fruit rate was calculated, and the results are shown in Table 1.

[0089] Table 1 Split fruit rate of examples 1-5 and comparative examples 1-6

[0090] Split fruit number / fruit Total fruit number / fruit Split fruit rate / % Example 1 125 7822 1.60 Example 2 115 8026 1.47 Example 3 126 7916 1.59 Example 4 129 8275 1.56 Example 5 123 8193 1.50 Comparative Example 1 356 7840 4.54 Comparative Example 2 255 7915 3.22 Comparative Example 3 228 7809 2.92 Comparative Example 4 243 7882 3.08 Comparative Example 5 198 7937 2.49 Comparative Example 6 187 7895 2.37

[0091] As can be seen from Table 1, the amino acid water-soluble fertilizer for preventing split fruit provided by the present application can effectively reduce the split fruit rate of apples, and the split fruit rate can be as low as 1.47%, which significantly reduces the split fruit rate compared with the comparative examples, and the total fruit number is also improved, indicating that the amino acid water-soluble fertilizer for preventing split fruit provided by the present application can strengthen the absorption of calcium, magnesium and other elements by fruit trees, prevent split fruit, and at the same time promote the growth of fruit trees and improve the yield of fruit trees.

[0092] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any changes or replacements within the technical range disclosed by the present application can be easily thought of by those skilled in the art, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An amino acid water-soluble fertilizer for preventing fruit cracking, characterized in that, It is composed of the following raw materials in weight parts: 30-50 parts of ternary compound fertilizer, 8-15 parts of calcium source, 8-15 parts of magnesium source, 5-12 parts of compound amino acid, 3-8 parts of trace element and 5-10 parts of additive; The compound amino acid is composed of glycine, phenylalanine, aspartic acid, isoleucine and butyric acid; the mass ratio of glycine, phenylalanine, aspartic acid, isoleucine and butyric acid is (2-6):(5-12):(1-3):(1-5):(3-7); The additive is composed of lactic acid, acetic acid and citric acid; the mass ratio of lactic acid, acetic acid and citric acid is (3-7):(2-6):(2-6).

2. The amino acid water-soluble fertilizer for preventing cleft fruit according to claim 1, characterized by, The mass ratio of N, P and K in the ternary compound fertilizer is 1:(1-2):(2-4).

3. The amino acid water-soluble fertilizer for preventing cleft fruit according to claim 1, characterized by, The calcium source includes one or more of calcium nitrate, calcium sulfate, calcium acetate, glycine calcium and calcium phosphate.

4. The amino acid water-soluble fertilizer for preventing cleft fruit according to claim 1, characterized by, The magnesium source includes one or more of magnesium sulfate, magnesium nitrate, magnesium chloride and potassium magnesium sulfate.

5. The amino acid water-soluble fertilizer for preventing cleft fruit according to claim 1, characterized by, The trace element includes one or more of ferrous sulfate, copper sulfate, manganese sulfate, zinc sulfate and manganese sulfate.

6. The method for preparing the amino acid water-soluble fertilizer for preventing split fruit according to any one of claims 1 to 5, characterized in that, It comprises the following steps: The calcium source, magnesium source, compound amino acid, trace element and additive are mixed and heated to obtain a mixture; the obtained mixture and ternary compound fertilizer are respectively crushed and then uniformly mixed to obtain the amino acid water-soluble fertilizer for preventing fruit cracking.

7. The production method according to claim 6, wherein The heating temperature is 30-40℃ and the time is 30-50 min.