A preparation for promoting strontium absorption in blueberries

Abstract

The present invention discloses a preparation for promoting strontium absorption in blueberries, belonging to the technical field of blueberry cultivation. The preparation consists of citric acid, potassium fulvate and Trichoderma harzianum. On the one hand, the preparation promotes the biological availability of strontium in strontium-rich soil, and on the other hand, by improving soil air permeability, it promotes the growth of blueberry roots and enhances the strontium absorption capacity of blueberry roots, thereby increasing the strontium content in blueberry fruits. The preparation for promoting strontium absorption in blueberries provided by the present invention has a simple formula, a simple process, and the raw materials used are all common raw materials, with a low cost. Applying the preparation for promoting strontium absorption in blueberries provided by this application can not only increase the strontium content in blueberry fruits, but also increase the yield of blueberries, which is of great significance for blueberry cultivation.

Description

Technical Field

[0001] The present invention relates to the technical field of blueberry cultivation, and particularly relates to a preparation for promoting strontium absorption in blueberries. Background Art

[0002] Strontium is an essential trace element for the human body, is a normal component of human bones and teeth, can reduce the absorption of sodium by the human body, and has the effect of preventing "three highs" and cardiovascular diseases. Consuming more strontium-containing foods can strengthen bones, improve intelligence, beautify the face and delay aging.

[0003] Blueberry is a small berry rich in anthocyanins and with extremely high health care value. In recent years, it has received extensive attention from consumers and has high economic value. The soil in Ganyu District, Jiangsu Province is loose and suitable for blueberry growth, and it is one of the famous blueberry production areas in China. Previous studies found that the content of strontium element in the soil of this area is relatively rich, but the strontium content in blueberry fruits is relatively low, only 0.05 mg / kg. How to increase the strontium content in blueberry fruits and further improve the economic value of blueberries has important production significance. Summary of the Invention

[0004] The purpose of the present invention is to provide a preparation for promoting strontium absorption in blueberries. By using potassium fulvate as a strontium activator, the strontium in the soil is converted from the bound state to the available state, which is beneficial for blueberries to absorb; further using citric acid as a strontium chelating agent, the strontium is distributed from the solid phase of the soil to the liquid phase, improving the biological availability of strontium and promoting the absorption efficiency of strontium by blueberry roots; the Trichoderma harzianum in the preparation can inhibit the growth of pathogenic bacteria, improve the air permeability of the soil, promote the growth of blueberry roots, and improve the strontium absorption ability of blueberry roots, thereby increasing the strontium content in blueberry fruits.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] Technical solution one of the present invention: Provide a preparation for promoting strontium absorption in blueberries, which is composed of citric acid, potassium fulvate and Trichoderma harzianum.

[0007] Preferably, the mass ratio of citric acid, potassium fulvate and Trichoderma harzianum is (10 - 15):(30 - 50):(3 - 5).

[0008] More preferably, the mass ratio of citric acid, potassium fulvate and Trichoderma harzianum is 13:40:5.

[0009] Technical solution two of the present invention: Provide a preparation method for the above preparation for promoting strontium absorption in blueberries, including the following steps:

[0010] Weigh citric acid, potassium fulvate and Trichoderma harzianum according to the mass ratio, and stir evenly to obtain the preparation for promoting strontium absorption in blueberries.

[0011] The third technical solution of the present invention: Provide an application of the above-mentioned preparation for promoting strontium absorption in blueberries in blueberry cultivation.

[0012] Preferably, the application method of the preparation for promoting strontium absorption in blueberries is hole application, the application period is the early flowering stage, and the application amount is 0.3 kg per plant.

[0013] The beneficial technical effects of the present invention are as follows:

[0014] In the present invention, potassium fulvate is used as a strontium activator to convert strontium in the soil from the bound state to the available state, which is beneficial for blueberries to absorb; further, citric acid is used as a strontium chelating agent to distribute strontium from the soil solid phase to the liquid phase, improving the biological availability of strontium and promoting the absorption efficiency of strontium by blueberry roots; Trichoderma harzianum in the preparation can inhibit the growth of pathogenic bacteria, improve the air permeability of the soil, promote the growth of blueberry roots, and improve the strontium absorption ability of blueberry roots, thereby increasing the strontium content in blueberry fruits.

[0015] The preparation for promoting strontium absorption in blueberries provided by the present invention has a simple formula and a simple process. The raw materials used are all common raw materials, and the cost is relatively low. Applying the preparation for promoting strontium absorption in blueberries provided by this application can not only increase the strontium content in blueberry fruits, but also increase the yield of blueberries, which is of great significance for blueberry cultivation. Detailed implementation manners

[0016] Now, various exemplary implementation manners of the present invention will be described in detail. This detailed description should not be regarded as a limitation of the present invention, but should be understood as a more detailed description of certain aspects, characteristics, and implementation manners of the present invention. It should be understood that the terms described in the present invention are only used to describe specific implementation manners and are not used to limit the present invention.

[0017] In addition, for the numerical ranges in the present invention, it should be understood that each intermediate value between the upper and lower limits of the range is also specifically disclosed. Any intermediate value within any stated value or stated range, as well as each smaller range between any other stated value or intermediate value within the stated range, is also included in the present invention. The upper and lower limits of these smaller ranges may be independently included or excluded from the range.

[0018] Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present invention pertains. Although the present invention only describes preferred methods and materials, any methods and materials similar or equivalent to those described herein can also be used in the implementation or testing of the present invention.

[0019] Regarding the terms "comprising", "including", "having", "containing", etc. used herein, they are all open-ended terms, that is, they are intended to include but not be limited to.

[0020] The present invention provides a preparation for promoting the absorption of strontium by blueberries, which consists of citric acid, potassium fulvate, and Trichoderma harzianum.

[0021] The strontium chelating agent selected in the present invention is citric acid. Compared with other chelating agents, the water solubility of strontium chelated by citric acid is better, the absorption efficiency of blueberries for strontium chelated by citric acid is higher, the transportation is faster, and the effect of increasing the strontium content in blueberry fruits is better.

[0022] The potassium fulvate selected in the present invention can not only activate strontium in the soil, but also provide sufficient nutrient elements for the growth of blueberries.

[0023] Furthermore, the mass ratio of the citric acid, potassium fulvate, and Trichoderma harzianum is (10-15):(30-50):(3-5).

[0024] More specifically, the mass ratio of the citric acid, potassium fulvate, and Trichoderma harzianum is 13:40:5.

[0025] The present invention also provides a preparation method for the above-mentioned preparation for promoting the absorption of strontium by blueberries, which includes the following steps:

[0026] Weigh citric acid, potassium fulvate, and Trichoderma harzianum according to the mass ratio, and stir evenly to obtain the preparation for promoting the absorption of strontium by blueberries.

[0027] The present invention also provides an application of the above-mentioned preparation for promoting the absorption of strontium by blueberries in blueberry planting.

[0028] Furthermore, when applying the preparation for promoting the absorption of strontium by blueberries to plant blueberries, the application method of the preparation for promoting the absorption of strontium by blueberries is hole application, the application period is the early flowering stage, and the application amount is 0.3 kg per plant.

[0029] The specific application method is: at the early flowering stage of blueberries, dig holes (the hole depth is 10-20 cm) in the soil 10-20 cm away from the roots of blueberry plants, apply 0.3 kg of the preparation for promoting the absorption of strontium by blueberries, cover the soil, and pour enough water.

[0030] The specific embodiments of the present invention are as follows:

[0031] Example 1

[0032] Preparation of the preparation for promoting the absorption of strontium by blueberries:

[0033] Weigh citric acid powder, potassium fulvate powder, and Trichoderma harzianum T-22 according to the mass ratio of 13:40:5, and stir evenly to obtain the preparation for promoting the absorption of strontium by blueberries.

[0034] Example 2

[0035] Preparation of the preparation for promoting the absorption of strontium by blueberries:

[0036] Weigh citric acid powder, potassium fulvate powder and Trichoderma harzianum T-22 according to the mass ratio of 15:30:3, and stir evenly to obtain the preparation for promoting strontium absorption by blueberries.

[0037] Example 3

[0038] Preparation of the preparation for promoting strontium absorption by blueberries:

[0039] Weigh citric acid powder, potassium fulvate powder and Trichoderma harzianum T-22 according to the mass ratio of 10:50:3, and stir evenly to obtain the preparation for promoting strontium absorption by blueberries.

[0040] Example 4

[0041] Preparation of the preparation for promoting strontium absorption by blueberries:

[0042] Weigh citric acid powder, potassium fulvate powder and Trichoderma harzianum T-22 according to the mass ratio of 10:45:5, and stir evenly to obtain the preparation for promoting strontium absorption by blueberries.

[0043] Comparative Example 1

[0044] Preparation of the preparation for promoting strontium absorption by blueberries:

[0045] Compared with Example 1, the only difference is that citric acid is replaced with an equimolar amount of ethylenediaminetetraacetic acid.

[0046] Comparative Example 2

[0047] Preparation of the preparation for promoting strontium absorption by blueberries:

[0048] Compared with Example 1, the only difference is that citric acid is replaced with an equimolar amount of ethylene glycol bis(2-aminoethyl ether) tetraacetic acid.

[0049] Comparative Example 3

[0050] Preparation of the preparation for promoting strontium absorption by blueberries:

[0051] Compared with Example 1, the only difference is that citric acid in the components is omitted.

[0052] Test Example 1

[0053] Determine the activation effect of potassium fulvate on bound strontium in soil:

[0054] (1) Take soil from the blueberry planting area, sieve out debris more than 2 cm, dry it at 60 °C until the water content is not higher than 10%, and measure its strontium content as the initial strontium content;

[0055] (2) Prepare a solution with a potassium fulvate content of 15 g / L;

[0056] (3) Pour the 1 L solution prepared in step (2) into 20 kg of the soil dried in step (1).

[0057] (4) Record the elution amount of strontium in the aged soil at different times (using water as the eluent), and the results are shown in Table 1. Use the soil washed with water after drying in step (1) as the blank group.

[0058] Activation efficiency (%) = (strontium elution amount in the potassium fulvate group - strontium elution amount in the blank group) / (initial strontium content - strontium elution amount in the blank group) × 100%.

[0059] Table 1 Activation effect of potassium fulvate on strontium in soil

[0060]

[0061] Test Example 2

[0062] Examine the effects of the preparations for promoting strontium absorption in blueberries prepared in Examples 1 to 4 and Comparative Examples 1 to 3 on the strontium content in blueberry fruits, using water as the control group:

[0063] Select the blueberry variety 'Brilliant' of rabbiteye blueberry as the experimental variety. Apply the preparations for promoting strontium absorption in blueberries to each group at the early flowering stage. The application method is to dig holes (10 - 20 cm deep) in the soil 10 - 20 cm away from the roots of the blueberry plants, apply 0.3 kg of the preparation for promoting strontium absorption in blueberries, cover the soil, and pour enough water. Repeat each treatment with 3 plants. When the fruits are completely colored to full blue, randomly harvest 50 fruits from each single plant in the upper, middle, and lower positions of the tree body for each treatment, and analyze the maximum fruit diameter, fruit strontium content, and soluble solids index. The analysis results are shown in Table 2.

[0064] Table 2 Effects of different treatments on strontium content, maximum fruit diameter, and soluble solids of blueberry fruits

[0065]

[0066]

[0067] Note: Different lowercase letters in the same column in Table 1 indicate significant differences (p < 0.05).

[0068] It can be seen from Table 1 that using the preparation for promoting strontium absorption in blueberries prepared by the present invention can not only increase the strontium content in blueberry fruits, but also increase the average fruit diameter of blueberry fruits. When citric acid is used as the chelating agent, the strontium content in blueberry fruits is significantly increased compared with other chelating agents. Without adding a chelating agent, the strontium content in blueberry fruits is significantly reduced.

[0069] The embodiments described above are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the spirit of the design of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A preparation for promoting strontium absorption in blueberries, characterized in that, It consists of citric acid, potassium fulvate and Trichoderma harzianum; The mass ratio of the citric acid, potassium fulvate and Trichoderma harzianum is (10 - 15):(30 - 50):(3 - 5).

2. The preparation for promoting strontium absorption in blueberries according to claim 1, characterized in that, The mass ratio of the citric acid, potassium fulvate and Trichoderma harzianum is 13:40:

5.

3. A method for preparing the preparation for promoting strontium absorption in blueberries according to any one of claims 1 to 2, characterized in that, It includes the following steps: Weigh citric acid, potassium fulvate and Trichoderma harzianum according to the mass ratio, and stir evenly to obtain the preparation for promoting the absorption of strontium by blueberries.

4. Application of the preparation for promoting the absorption of strontium by blueberries according to any one of claims 1 - 2 in blueberry cultivation.

5. The application according to claim 4, wherein The application method of the preparation for promoting the absorption of strontium by blueberries is hole application, the application period is the early flowering stage, and the application amount is 0.3 kg per plant.

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