A large tree nutrient solution for promoting root growth and immunity

Abstract

The present application relates to a kind of big tree nutrient solution for promoting root growth and immunity, the big tree nutrient solution for promoting root growth and immunity includes the following mass parts of ingredients: modified chitosan 0.1-0.5 parts, salt 0.5-10 parts, auxin 0.1-2 parts, auxiliary agent 0.1-1 part, water 50-100 parts;Wherein, the modified chitosan is sodium alginate and humic acid modified chitosan.The salt is selected from one or more of ammonium salt, phosphate, calcium salt, potassium salt, magnesium salt, iron salt.The present application is compounded by using modified chitosan, inorganic salt, auxin and the like ingredient to obtain nutrient solution, can stimulate tree cell activity, supply the key substance required for growth, to efficiently regulate plant growth, while nutrient solution has better stability, solve the problems in prior art, with good application prospect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of agriculture, in particular to a tree nutrient solution for promoting root growth and immunity. BACKGROUND

[0002] The tree nutrient solution is a nutrient supplement solution specially designed for trees, also known as a tree hanging needle solution or a tree hanging bag solution. The tree nutrient solution is rich in multiple nutrient elements necessary for tree growth, including nitrogen, phosphorus, potassium, boron, zinc, magnesium, iron, molybdenum, and other beneficial biological bacteria, organic peptides, or vitamins, which have a good promoting effect on the growth of trees.

[0003] The nutrient solution is directly infiltrated into the core of the tree trunk by the hanging needle infusion technology, which is convenient for the tree to absorb efficiently, so the tree nutrient solution can not only accelerate the growth of tree roots, branches and leaves and improve photosynthetic efficiency, but also enhance the resistance of trees to effectively resist pest infestation. The tree nutrient solution also shows rejuvenation effect for newly planted trees, slow-growing trees and ancient trees, and is a key auxiliary means in garden maintenance.

[0004] At present, there are many tree nutrient solution products that are compounded with various inorganic salts and growth hormones, which have a certain effect on promoting tree growth. However, the existing technical solutions mostly directly mix various components, and the effect obtained is not satisfactory. Compared with other types of products, the effect of promoting growth and improving resistance is still difficult to reach the ideal level.

[0005] In summary, there is an urgent need to develop a new technical solution to solve the problems in the prior art. SUMMARY

[0006] Therefore, the present application provides a tree nutrient solution for promoting root growth and immunity. The tree nutrient solution is compounded by modified chitosan, inorganic salt and growth hormone, which can stimulate tree cell vitality, supply key substances needed for growth, and efficiently regulate plant growth. Meanwhile, the tree nutrient solution has better stability, solves the problems in the prior art, and has good application prospect.

[0007] The present application aims to provide a tree nutrient solution for promoting root growth and immunity, which comprises the following components in mass fraction:

[0008]

[0009] Among them,

[0010] The modified chitosan is sodium alginate and humic acid modified chitosan.

[0011] Further, the chitosan is vinyl chitosan.

[0012] Further, the preparation method of the modified chitosan comprises the following steps:

[0013] S1, sodium alginate, 3-aminoethanol vinyl ether and catalyst are mixed, and after reaction, modified sodium alginate is obtained;

[0014] S2, humic acid, acryloyl chloride and catalyst are mixed, and after reaction, modified humic acid is obtained;

[0015] S3, the modified sodium alginate, modified humic acid, chitosan and initiator are mixed, and heated to react to obtain modified chitosan.

[0016] Further, in step S1, the reaction temperature is 15-30℃, and the reaction time is 2-8h.

[0017] Further, in step S2, the reaction temperature is 0-30℃, and the reaction time is 12-36h.

[0018] Further, in step S1, the catalyst is EDC and NHS; in step S2, the catalyst is organic amine.

[0019] Further, in step S3, the heating reaction temperature is 60-80℃, and the heating reaction time is 6-36h.

[0020] Further, in step S3, the mass ratio of chitosan, modified humic acid and modified sodium alginate is 6:(0.5-2):(1-3).

[0021] Further, the salt is selected from one or more of ammonium salt, phosphate salt, calcium salt, potassium salt, magnesium salt and iron salt.

[0022] Further, the auxin is selected from one or more of zeatin, zeatin riboside and brassinolide.

[0023] Auxin is an important hormone for regulating plant growth, which plays an important role in cell division and differentiation, root and stem formation, fruit development and leaf fall process, and has the effects of promoting seed germination, growth and early flowering and fruiting. This kind of substance has been widely used in various food crops, and is more widely used in vegetables. It has obvious promoting effect on the yield and quality of crops and vegetables, but traditional plant auxins such as indole acetic acid and gibberellin belong to pesticides, so there are limitations in use. The present application uses new plant endogenous auxins such as zeatin, zeatin riboside and brassinolide to replace traditional pesticide components, which expands the application space of this kind of product.

[0024] Further, the auxiliary agent is selected from one or more of dispersing agent, stabilizer, emulsifying agent, antioxidant and preservative.

[0025] The present application has the following beneficial effects:

[0026] The present application adopts a plurality of inorganic salts and a growth regulator, modified chitosan and other components to mix to obtain a large tree nutrient solution that promotes root growth and immunity. While meeting the needs of plants for nitrogen, phosphorus, potassium, iron, magnesium and other macro and micro elements, the solution is compounded with exogenous nutrients to achieve the effect of promoting the growth and development of trees. The modified chitosan is obtained by reacting humic acid and sodium alginate with water-soluble vinyl chitosan, thereby grafting sodium alginate and humic acid molecules in chitosan, integrating seaweed polysaccharide, chitosan polysaccharide and growth regulator humic acid. This not only helps to enhance the stability of itself and play a multi-effect growth-promoting role, but also helps to improve the stability of the nutrient solution and promote the absorption of nutrients through the intermolecular force of the active ingredients such as salt, zeatin and brassinosteroid, thereby rapidly filling the nutritional gap and ensuring the smooth operation of tree metabolism, playing a role in stimulating the growth of tree roots, enhancing the adhesion of trees and the absorption of water and nutrients in the soil, and also helping to enhance the natural immunity of trees, improving the disease resistance and environmental stress resistance of plants. In summary, the large tree nutrient solution of the present application overcomes the defects in the prior art, has multiple purposes such as promoting new roots, supplementing nutrients, rejuvenating weak trees and improving transplanting survival rate, and has important significance for the development of agricultural cultivation technology. DETAILED DESCRIPTION

[0027] In order to more clearly illustrate the technical solutions of the present application, the following examples are listed. The raw materials, reactions and post-treatment methods appearing in the examples are all common raw materials on the market and technical means familiar to those skilled in the art, unless otherwise stated.

[0028] The words "preferred", "preferably", "more preferred", etc. in the present application refer to the embodiments of the present application that can provide certain beneficial effects in certain cases. However, other embodiments can also be preferred in the same or other cases. In addition, the description of one or more preferred embodiments does not imply that other embodiments are not usable, nor is it intended to exclude other embodiments from the scope of the present application.

[0029] It should be understood that, except in any operational examples or otherwise indicated, expressions of amount or all numbers in the specification and claims, such as, for example, amounts of ingredients, use the term "about" to modify the term "approximately" in all cases. Therefore, unless otherwise indicated, the numerical parameters set forth in the following description and the attached claims are approximations that can vary depending on the desired properties to be obtained by the present application.

[0030] The preparation method of the vinyl chitosan in the embodiment of the present application comprises the following steps:

[0031] Toluene is used as a solvent, 68.75 g of acryloyl chloride, 76.88 g of triethylamine and 89.88 g of hydroxyethyl methacrylate are mixed, and then reacted at 0-5 ℃ for 4 h, and then washed with water, hydrochloric acid (1 M) and NaOH solution (1 M) to obtain acryloyloxyethyl methacrylate;

[0032] 6.0 g of chitosan (with a viscosity average molecular weight of 150,000 and a degree of deacetylation of 85%) is dissolved in 200 ml of an aqueous solution of glacial acetic acid 2.4 ml, then 200 ml of ethanol is added, stirred uniformly, then 5.64 g of the acryloyloxyethyl methacrylate is added, and reacted at 50 ℃ for 48 h, and then the unreacted substances and by-products are removed by dialysis, and then the product is obtained by freeze-drying.

[0033] The preparation method of the modified chitosan in the embodiment of the present application comprises the following steps:

[0034] S1, 2 g of sodium alginate is dissolved in 200 mL of dilute hydrochloric acid with pH=4 to obtain a sodium alginate solution, 0.96 g of EDC and 0.58 g of NHS are dissolved in 5 mL of deionized water to prepare a catalyst solution, then the catalyst solution is added to the sodium alginate solution, stirred at 15 ℃ for 30 min, then 0.58 mL of 3-aminoethanol vinyl ether is added, and the stirring reaction is continued at 15 ℃ for 5 h, then 800 mL of ethanol is used for sedimentation, and then the modified sodium alginate is obtained after filtration, washing and drying;

[0035] S2, 20 mL of anhydrous dichloromethane is used as a solvent, 5 g of humic acid, 1 g of acryloyl chloride and 1 g of triethylamine are added at 0 ℃, the temperature is increased to 30 ℃, and the reaction is carried out for 24 h, then the modified humic acid is obtained after filtration, washing and drying;

[0036] S3, water is used as a solvent, and vinyl chitosan, modified humic acid, modified sodium alginate and ammonium persulfate with a mass ratio of 6:1:1.5:0.1 are mixed, and then the mixture is reacted at 70 ℃ for 6 h in a nitrogen atmosphere, and then the modified chitosan is obtained after filtration, washing and drying.

[0037] In the embodiment of the present application, the "parts" all refer to mass parts.

[0038] Embodiment 1

[0039] A large tree nutrient solution for promoting root growth and immunity, the large tree nutrient solution for promoting root growth and immunity comprises the following components in mass parts:

[0040]

[0041] The preparation method of the large tree nutrient solution for promoting root growth and immunity comprises the following steps:

[0042] According to the above mass fraction, the modified chitosan and other ingredients are blended and stirred uniformly to obtain the large tree nutrient solution for promoting root growth and immunity.

[0043] Example 2

[0044] A large tree nutrient solution for promoting root growth and immunity comprises the following mass fractions of ingredients:

[0045]

[0046]

[0047] The preparation method of the large tree nutrient solution for promoting root growth and immunity comprises the following steps:

[0048] According to the above mass fraction, the modified chitosan and other ingredients are blended and stirred uniformly to obtain the large tree nutrient solution for promoting root growth and immunity.

[0049] Example 3

[0050] A large tree nutrient solution for promoting root growth and immunity comprises the following mass fractions of ingredients:

[0051]

[0052] The preparation method of the large tree nutrient solution for promoting root growth and immunity comprises the following steps:

[0053] According to the above mass fraction, the modified chitosan and other ingredients are blended and stirred uniformly to obtain the large tree nutrient solution for promoting root growth and immunity.

[0054] Comparative Example 1

[0055] The difference between this comparative example and Example 1 is that the modified chitosan is replaced by a mixture of unmodified chitosan, humic acid and sodium alginate in a mass ratio of 6:1:1.5, and the other ingredients and preparation method are the same as those of Example 1.

[0056] Comparative Example 2

[0057] The difference between this comparative example and Example 1 is that in the preparation method of the modified chitosan, step S2 is omitted and no modified humic acid is added in step S3, and the other ingredients and preparation method are the same as those of Example 1.

[0058] Test Example

[0059] The performance of the nutrient solution prepared in the examples and comparative examples was tested.

[0060] Test method:

[0061] Under the same environmental conditions, 100 trees of the same size of Jinguimei were transplanted and divided into 5 groups, 20 trees in each group, and the nutrient solution prepared in Examples 1-3 and Comparative Examples 1-2 was injected into the trunk, 1.5 L of nutrient solution was injected every day, and the injection was continued for 15 days, and the tree trunks were sprayed once in the morning and evening every day. The survival of each group of trees was counted.

[0062] The test results are shown in Table 1.

[0063] Table 1 Test results

[0064] Item Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Survival rate / % 95 95 100 85 80

[0065] According to Table 1, it can be concluded that the large tree nutrient solution for promoting root growth and immunity of the present application has a good promoting effect on the growth of trees. It is observed that the Jinguimei treated with the sample of the example has a larger total root length, and the root volume and specific surface area are higher than those of the comparative example, which proves that the large tree nutrient solution prepared in the example can improve the immunity of the tree, improve the resistance to environmental stress, effectively promote the growth of the root system of the plant, thereby more efficiently absorbing the nutrients in the soil, thereby improving the growth efficiency of the tree and the survival probability of the transplanted tree. Therefore, the large tree nutrient solution for promoting root growth and immunity provided by the present application overcomes the problems existing in the prior art, and has important significance for the development of agricultural planting technology.

[0066] It is apparent to those skilled in the art that the present application is not limited to the details of the foregoing exemplary embodiments, and that the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all respects as illustrative and not restrictive, and the scope of the present application is defined by the appended claims rather than the foregoing description, and it is intended to encompass all changes falling within the meaning and range of equivalents of the elements of the claims.

[0067] In addition, it should be understood that although the present specification is described in terms of embodiments, each embodiment does not contain only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. A nutrient solution for large trees that enhances root growth and immunity, characterized in that, The tree nutrient solution that promotes root growth and immunity includes the following components in parts by weight: 0.1-0.5 parts modified chitosan Salt 0.5-10 parts 0.1-2 parts of auxin 0.1-1 part of auxiliary agent 50-100 parts water; in, The modified chitosan is a chitosan modified with sodium alginate and humic acid. The chitosan is vinyl chitosan; The salt is selected from one or more of ammonium salts, phosphates, calcium salts, potassium salts, magnesium salts, and iron salts; The auxin is selected from one or more of zeatin, zeatin nucleoside, and brassinolide. The preparation method of the modified chitosan includes the following steps: S1. Sodium alginate, 3-aminoethanol vinyl ether and catalyst are mixed and reacted to obtain modified sodium alginate. S2. Humic acid, acryloyl chloride and catalyst are mixed and reacted to obtain modified humic acid. S3. The modified sodium alginate, modified humic acid, chitosan and initiator are mixed and heated to react, thereby obtaining modified chitosan. The mass ratio of chitosan, modified humic acid, and modified sodium alginate is 6:(0.5-2):(1-3).

2. The tree nutrient solution for promoting root growth and immunity according to claim 1, characterized in that, In step S1, the reaction temperature is 15-30℃ and the time is 2-8 h.

3. The tree nutrient solution for promoting root growth and immunity according to claim 1, characterized in that, In step S2, the reaction temperature is 0-30℃ and the time is 12-36 h.

4. The tree nutrient solution for promoting root growth and immunity according to claim 1, characterized in that, In step S1, the catalyst is EDC and NHS; in step S2, the catalyst is organic ammonia.

5. The tree nutrient solution for promoting root growth and immunity according to claim 1, characterized in that, In step S3, the heating reaction is carried out at a temperature of 60-80°C for a duration of 6-36 h.

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