Compound substrate formula for promoting healthy growth of citrus root system

Abstract

The invention relates to the technical field of citrus cultivation, and discloses a compound substrate formula for promoting healthy growth of citrus root systems and a preparation method of the compound substrate formula. A formula of the compound substrate for promoting healthy growth of citrus root systems comprises the following raw materials in parts by weight: 20-30 parts of traditional Chinese medicine residues, 15-25 parts of edible fungus waste, 10-20 parts of crop straws, 8-15 parts of livestock and poultry manure, 5-10 parts of distillers' grains, 5-10 parts of vinegar residues, 3-8 parts of shell powder, 2-6 parts of mineral humic acid powder, 3-7 parts of a ternary compound fertilizer, 0.5-2 parts of an EM strain and 1-4 parts of a seaweed extract. According to the formula of the compound substrate for promoting healthy growth of the citrus root system, various nutrient elements are provided through the traditional Chinese medicine residues and the like, and the rhizosphere microbial environment is adjusted in combination with the EM strain, so that the problem that currently common citrus culture substrates mostly adopt single chemical fertilizers or simple organic materials; therefore, the problems of unbalanced nutrient absorption and limited growth of the root system are solved.

Description

Technical Field

[0001] The present application relates to the technical field of citrus cultivation, and more specifically, to a composite matrix formula for promoting the robust growth of citrus roots. Background Art

[0002] Citrus is a perennial evergreen fruit tree of the genus Citrus in the Rutaceae family. Its cultivation history dates back 4,000 years in China and is now widely distributed in subtropical regions around the world. The root system, the foundation of citrus growth and development, performs core functions such as supporting the tree, absorbing and transporting nutrients, and synthesizing endogenous hormones. The citrus root system consists of a taproot, lateral roots, and fibrous roots. The fibrous roots, densely covered with root hairs, are the primary organs for water and mineral absorption. A healthy root system improves citrus's absorption of nitrogen, phosphorus, and potassium and produces key growth regulators such as abscisic acid and cytokinins. In modern citrus cultivation, root management has become a core technical component for improving quality and efficiency. Maintaining vigorous root vitality through appropriate soil modification, fertilization, and root disease prevention and control plays an irreplaceable role in achieving high and stable citrus yields, improving the sugar-to-acid ratio, and enhancing the appearance of the fruit.

[0003] Regarding the above-mentioned related technologies, the inventors believe that the currently commonly used citrus cultivation substrates mostly use single chemical fertilizers or simple organic materials. Due to incomplete nutrient types and low microbial activity, they cause problems such as unbalanced root nutrient absorption and restricted growth. Summary of the Invention

[0004] In order to solve the problem that the currently commonly used citrus cultivation substrates mostly use single chemical fertilizers or simple organic materials, which cause unbalanced root nutrient absorption and restricted growth due to incomplete nutrient types and low microbial activity, the present application provides a composite substrate formula that promotes the healthy growth of citrus roots.

[0005] In a first aspect, the present application provides a composite matrix formula for promoting the robust growth of citrus roots, using the following technical solution:

[0006] A composite matrix formula for promoting the healthy growth of citrus roots comprises the following components in parts by weight: 20-30 parts of traditional Chinese medicine residues, 15-25 parts of edible fungus waste, 10-20 parts of crop straw, 8-15 parts of livestock and poultry manure, 5-10 parts of distiller's grains, 5-10 parts of vinegar grains, 3-8 parts of shell powder, 2-6 parts of mineral humic acid powder, 3-7 parts of ternary compound fertilizer, 0.5-2 parts of EM bacteria, and 1-4 parts of seaweed extract.

[0007] By adopting the above technical scheme, traditional Chinese medicine residues, edible fungus waste, crop straw, livestock and poultry manure, distiller's grains, and vinegar grains are used to provide rich organic matter and a variety of nutrients. The nitrogen, phosphorus, and potassium are supplemented with a triple compound fertilizer. The rhizosphere microbial environment is regulated by EM bacteria, and seaweed extract is used to promote nutrient absorption, thereby achieving comprehensive nutrient supply and optimization of the rhizosphere microenvironment. This improves the problem that the currently commonly used citrus cultivation substrates mostly use single chemical fertilizers or simple organic materials. Due to incomplete nutrient types and low microbial activity, the root system absorbs nutrients unevenly and growth is restricted.

[0008] Preferably, the shell powder is prepared from the shells of oysters, conches, clams, scallops, shellfish, mussels, white clams and razor clams.

[0009] By adopting the above technical solution, shell powder is prepared using the shells of oysters, conches, clams, scallops, mussels, white clams and razor clams. These shells have a natural porous structure and can effectively retain their porosity characteristics after being crushed. They synergize with fiber materials such as Chinese medicine residues and crop straw to improve the air permeability of the matrix. At the same time, the minerals contained in the shells can also supplement some nutrients for the matrix. Therefore, the physical structure of the matrix is ​​optimized, the air permeability is enhanced, and nutrients are supplemented, thereby promoting the respiration and growth of citrus roots.

[0010] Preferably, the traditional Chinese medicine residue is subjected to biological fermentation, and contains nitrogen, phosphorus, potassium, calcium, magnesium, silicon, sulfur, and iron, manganese, copper, zinc, boron, and molybdenum after fermentation.

[0011] By adopting the above technical solution, since the traditional Chinese medicine residue that has undergone biological fermentation is used, the fermented traditional Chinese medicine residue contains large-scale elements such as nitrogen, phosphorus, potassium, medium-scale elements such as calcium, magnesium, silicon, sulfur, and trace elements such as iron, manganese, copper, zinc, boron, and molybdenum. These elements can combine with the organic matter of the traditional Chinese medicine residue itself to provide diverse nutrients for the matrix. Therefore, the nutritional components of the matrix are supplemented, the needs of the citrus root system for various nutrients are met, and the root growth is promoted.

[0012] Preferably, it further comprises azelaic acid, and the weight portion of the azelaic acid is 0.05-0.25 parts.

[0013] By adopting the above technical solution, since 0.05-0.25 parts by weight of azelaic acid is added, azelaic acid can increase the solubility of nutrients in the matrix by virtue of its organic acid properties, while inhibiting harmful pathogens in the rhizosphere, and synergizing with organic matter, nitrogen, phosphorus, potassium and other nutrients and EM bacteria in the matrix, thereby achieving the effects of improving nutrient effectiveness, optimizing the root microecological environment, enhancing the disease resistance and nutrient absorption efficiency of citrus roots, and promoting healthy root growth.

[0014] Preferably, the invention further comprises γ-aminobutyric acid and γ-polyglutamic acid, wherein the weight portion of the γ-aminobutyric acid is 0.04 parts, and the weight portion of the γ-polyglutamic acid is 0.03 parts.

[0015] By adopting the above technical scheme, since 0.04 parts by weight of γ-aminobutyric acid and 0.03 parts by weight of γ-polyglutamic acid are added, γ-aminobutyric acid can enhance the activity of root stress-resistant enzymes, and γ-polyglutamic acid can form a water-retaining film. The two act synergistically and cooperate with other nutrients and functional substances in the matrix to activate the root stress resistance system and maintain water balance. Therefore, the effect of improving the stress resistance of citrus roots and promoting the healthy growth of roots under adverse conditions is achieved.

[0016] Preferably, the crop straw is one or more of corn straw, wheat straw, and rice straw.

[0017] By adopting the above technical solution, since one or more of corn straw, wheat straw, and rice straw are used as crop straw, these straws have rich fiber structure and organic matter, and can synergistically provide nutrition with other organic raw materials. At the same time, their fiber characteristics can be combined with shell powder to maintain the looseness of the matrix and improve air permeability. Therefore, sufficient organic matter and a suitable physical environment are provided for the growth of citrus roots, thereby promoting the healthy growth of the root system.

[0018] Preferably, the livestock and poultry manure is one or more of chicken manure, cow manure, and sheep manure.

[0019] By adopting the above technical solution, since one or more of chicken manure, cow manure, and sheep manure are used as livestock and poultry manure, these manures are rich in organic matter and nutrients such as nitrogen, phosphorus, and potassium, and can synergistically supplement the matrix nutrition with other organic raw materials. The loose structure formed after composting can cooperate to improve the permeability of the matrix, thereby providing comprehensive nutrition and a good growth environment for the citrus root system, thereby promoting the healthy growth of the root system.

[0020] Preferably, the distiller's grains are one or more of white wine grains and beer grains, and the vinegar grains are one or more of rice vinegar grains and aged vinegar grains.

[0021] By adopting the above technical scheme, since one or more of white wine lees and beer lees are used as wine lees, and one or more of rice vinegar lees and aged vinegar lees are used as vinegar lees, these wine lees and vinegar lees contain organic matter and a small amount of amino acids and other nutrients, which can cooperate with other organic raw materials to provide diverse nutrients, and their loose structure can cooperate to enhance the permeability of the matrix, thereby providing nutrition and a suitable environment for the growth of citrus roots, thereby promoting the healthy growth of the roots.

[0022] Preferably, the mass ratio of nitrogen, phosphorus and potassium in the ternary compound fertilizer is 1:1:1 to 2:1:1.

[0023] By adopting the above technical solution, since a ternary compound fertilizer with a mass ratio of nitrogen, phosphorus and potassium of 1:1:1 to 2:1:1 is used, the nitrogen, phosphorus and potassium in this ratio can match the demand of citrus root system for the main nutrients for growth, and synergize with the organic matter, trace elements and other functional components provided by organic raw materials to supplement nutrition in a balanced manner. Therefore, the reasonable demand of citrus root system for nitrogen, phosphorus and potassium is met, and the healthy growth of the root system is promoted.

[0024] In a second aspect, the present application provides a method for preparing a composite matrix formula for promoting the robust growth of citrus roots, comprising the following steps:

[0025] Mixing organic raw materials: mixing Chinese medicinal residues, edible fungus waste, crop straw, livestock and poultry manure, distiller's grains, and vinegar grains to obtain a first mixture;

[0026] Mixing inorganic and nutrient components: uniformly mixing shell powder, mineral humic acid powder, and ternary compound fertilizer to obtain a second mixture;

[0027] Preparation of bacterial solution and fermentation: preparing a bacterial solution by mixing EM bacteria and water at a mass ratio of 1:150, and fermenting the bacterial solution with the first mixture;

[0028] Mixing and forming: uniformly mixing the fermented first mixture, the second mixture and the seaweed extract;

[0029] Drying treatment: The mixed matrix is ​​dried to obtain a composite matrix.

[0030] In summary, this application has the following beneficial effects:

[0031] 1. The present application provides rich organic matter and multiple nutrients through traditional Chinese medicine residues, edible fungus waste, crop straw, livestock and poultry manure, distiller's grains, and vinegar grains, supplements nitrogen, phosphorus, and potassium with triple compound fertilizer, combines EM bacteria to regulate the rhizosphere microbial environment, and promotes nutrient absorption with seaweed extract, thereby achieving comprehensive nutrient supply and optimization of the rhizosphere microenvironment, thereby improving the current commonly used citrus cultivation substrates, which mostly use single chemical fertilizers or simple organic materials. Due to incomplete nutrient types and low microbial activity, the root system absorbs nutrients unevenly and growth is restricted.

[0032] 2. The present application improves the air permeability of the matrix through the porous structure of shell powder, enhances the water retention capacity by using mineral humic acid powder, and maintains the loose structure of the matrix by using fibrous materials such as Chinese medicine residues and crop straw, thereby optimizing the physical properties of the matrix. This improves the current commonly used citrus cultivation matrix, which mostly uses peat or single soil. Since it is difficult to balance air permeability and water retention, it causes root hypoxia or imbalanced water supply.

[0033] 3. This application utilizes agricultural waste such as traditional Chinese medicine residues, edible fungus waste, crop straw, livestock and poultry manure, distiller's grains, vinegar grains, and other agricultural wastes in combination with natural materials such as shell powder, thereby reducing the substrate's dependence on non-renewable resources. This improves the current commonly used citrus cultivation substrate, which mostly uses non-renewable resources such as peat. Due to limited resource reserves and high mining costs, the substrate production has poor sustainability and high costs.

[0034] 4. The present application optimizes the root microecological environment and enhances nutrient effectiveness by adding a specific weight portion of azelaic acid, thereby improving the problem that most commonly used citrus cultivation substrates currently use a single antibacterial agent or growth promoter. Due to the single function and lack of synergistic effect on nutrient dissolution, the root system has weak disease resistance and low nutrient absorption efficiency.

[0035] 5. The present application adds γ-aminobutyric acid and γ-polyglutamic acid to activate the root stress-resistant enzyme system and form a water-retention barrier, thereby improving the problem that most commonly used citrus cultivation substrates currently lack stress response components, and are unable to effectively regulate root physiological activities and maintain rhizosphere moisture, resulting in the inhibition of root growth under drought or saline-alkali conditions.

[0036] 6. The present application promotes root cell division and elongation and maintains osmotic balance through the synergistic effect of γ-aminobutyric acid and γ-polyglutamic acid, thereby improving the problem that the currently commonly used citrus cultivation substrates mostly rely on chemical regulators, which are prone to soil degradation due to long-term use and have a single effect, resulting in poor root development and decreased stress resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a flow chart of the method provided in this application. DETAILED DESCRIPTION

[0038] The present application is further described in detail below with reference to the accompanying drawings and examples.

[0039] Technical concept: The technical concept of the present invention originates from the targeted improvement of the technical defects of citrus substrates. In the process of citrus cultivation, the robust growth of the root system is the key to ensuring the yield and quality of the plants. However, there are many problems with existing citrus cultivation substrates: on the one hand, traditional substrates mostly use a single fertilizer or a simple mixture of organic materials, with incomplete nutrient types and low microbial activity, resulting in uneven nutrient absorption by the roots and restricted growth; on the other hand, it is difficult to balance the air permeability and water retention of the substrate, and the use of a single material such as peat often leads to root hypoxia or water imbalance; in addition, some substrates lack targeted functional components, the root system has weak disease resistance and stress resistance, and its growth is easily inhibited in adverse environments.

[0040] To solve the above problems, this application provides rich organic matter by combining multiple agricultural wastes, supplements nitrogen, phosphorus and potassium with triple compound fertilizer, uses EM bacteria to regulate the microecology, and seaweed extracts to promote absorption. At the same time, shell powder is introduced to optimize air permeability and mineral humic acid to enhance water retention, and specific functional ingredients are used to further improve root performance, forming a synergistic composite matrix formula and preparation method.

[0041] An embodiment of the present invention provides a composite matrix formula for promoting the healthy growth of citrus roots, comprising the following components in parts by weight: 20-30 parts of traditional Chinese medicine residues, 15-25 parts of edible fungus waste, 10-20 parts of crop straw, 8-15 parts of livestock and poultry manure, 5-10 parts of distiller's grains, 5-10 parts of vinegar grains, 3-8 parts of shell powder, 2-6 parts of mineral humic acid powder, 3-7 parts of ternary compound fertilizer, 0.5-2 parts of EM bacteria, and 1-4 parts of seaweed extract.

[0042] Specifically, Chinese medicine residues, edible fungus waste, crop straw, livestock and poultry manure, and wine and vinegar dregs are used as organic raw materials to provide organic matter and a variety of nutrients; the shell powder has a porous structure inside, which can improve the air permeability of the matrix; the mineral humic acid powder can enhance the water retention capacity of the matrix; the supplementation of nitrogen, phosphorus and potassium by the triple compound fertilizer can provide the main nutritional needs for root growth; the EM strains can regulate the rhizosphere microbial environment and promote the reproduction of beneficial microorganisms; the seaweed extract can promote the absorption of nutrients by the roots; thus, through the synergistic effect of various components, nutrition, a suitable growth environment and good microecological conditions are provided for the growth of citrus roots, thereby promoting the healthy growth of citrus roots.

[0043] Shell powder is prepared from the shells of oysters, conches, clams, scallops, mussels, white clams, and razor clams.

[0044] Specifically, the shell powder prepared from the shells of oysters, conches, clams, scallops, mussels, white clams and razor clams retains the natural porous structure and hard texture of the shells. After crushing, it can effectively increase the porosity of the matrix and improve the air permeability of the matrix. At the same time, it cooperates with fiber materials such as Chinese medicine residue and crop straw to maintain the loose structure of the matrix, provide a suitable physical environment for the growth of citrus roots, and promote root respiration and growth.

[0045] The residue of traditional Chinese medicine undergoes biological fermentation and contains nitrogen, phosphorus, potassium, calcium, magnesium, silicon, sulfur, iron, manganese, copper, zinc, boron and molybdenum.

[0046] Specifically, the Chinese medicine residue that has undergone biological fermentation contains large-scale elements such as nitrogen, phosphorus, and potassium, medium-scale elements such as calcium, magnesium, silicon, and sulfur, as well as trace elements such as iron, manganese, copper, zinc, boron, and molybdenum. These elements can provide rich and diverse nutrients for the growth of citrus roots, and cooperate with the organic matter in the Chinese medicine residue itself to supplement the nutrients in the matrix, meet the citrus roots' needs for multiple nutrients, and promote root growth.

[0047] The invention also includes azelaic acid, and the weight portion of the azelaic acid is 0.05-0.25 parts.

[0048] Specifically, the organic acid properties of azelaic acid can increase the solubility of nutrients in the matrix.

[0049] The invention also comprises gamma-aminobutyric acid and gamma-polyglutamic acid, wherein the weight portion of gamma-aminobutyric acid is 0.04 parts, and the weight portion of gamma-polyglutamic acid is 0.03 parts.

[0050] Specifically, γ-aminobutyric acid can enhance the activity of root anti-adversity enzymes, and γ-polyglutamic acid can form a water-retaining film. The two work together with the organic matter provided by Chinese medicine residues and edible fungus waste, nitrogen, phosphorus and potassium supplemented by triple compound fertilizer, air permeability improved by shell powder, water retention enhanced by mineral humic acid and rhizosphere microecological environment regulated by EM bacteria to maintain root physiological activity and water balance, and promote the healthy growth of citrus roots.

[0051] The crop straw is one or more of corn straw, wheat straw and rice straw.

[0052] Specifically, straw has a suitable fiber structure, which can further loosen the matrix to improve air permeability.

[0053] Livestock and poultry manure is one or more of chicken manure, cow manure, and sheep manure.

[0054] Specifically, feces contain organic matter and nutrients such as nitrogen, phosphorus and potassium, which can meet the growth needs of citrus roots and promote healthy root growth.

[0055] The wine lees are one or more of white wine lees and beer lees, and the vinegar lees are one or more of rice vinegar lees and aged vinegar lees.

[0056] Specifically, wine lees and vinegar lees contain rich organic matter and a small amount of nutrients such as amino acids, which can improve the nutritional diversity of the matrix.

[0057] The mass ratio of nitrogen, phosphorus and potassium in the triple compound fertilizer is 1:1:1 to 2:1:1.

[0058] Specifically, the nitrogen, phosphorus and potassium ratio of 1:1:1 to 2:1:1 can specifically supplement the main nutrients required for citrus root growth, and can meet the root system's balanced needs for nitrogen, phosphorus and potassium.

[0059] Please see the attached Figure 1 A method for preparing a composite matrix formula for promoting the robust growth of citrus roots comprises the following steps:

[0060] Mixing organic raw materials: mixing Chinese medicinal residues, edible fungus waste, crop straw, livestock and poultry manure, distiller's grains, and vinegar grains to obtain a first mixture;

[0061] Mixing inorganic and nutrient components: uniformly mixing shell powder, mineral humic acid powder, and ternary compound fertilizer to obtain a second mixture;

[0062] Preparation of bacterial solution and fermentation: preparing a bacterial solution by mixing EM bacteria and water at a mass ratio of 1:150, and fermenting the bacterial solution with the first mixture;

[0063] Mixing and forming: uniformly mixing the fermented first mixture, the second mixture and the seaweed extract;

[0064] Drying treatment: The mixed matrix is ​​dried to obtain a composite matrix.

[0065] Specifically, a first mixture is formed by mixing traditional Chinese medicine residue, edible fungus waste, crop straw, livestock and poultry manure, wine dregs, and vinegar dregs; a second mixture is formed by mixing shell powder, mineral humic acid powder, and ternary compound fertilizer; EM bacteria and water are prepared into a bacterial liquid in a mass ratio of 1:150, and then fermented with the first mixture; the fermented first mixture is evenly mixed with the second mixture and seaweed extract, and the mixture is dried to fully integrate the raw material components, compost and transform the organic matter, and evenly distribute the nutrients; the EM bacteria effectively play a role in regulating the rhizosphere microecology; and the finally formed composite matrix can provide comprehensive nutrition, a suitable physical environment, and good microecological conditions for the citrus root system, thereby promoting the healthy growth of the citrus root system.

[0066] The sources of raw materials used in this embodiment and comparative example are as follows:

[0067] Traditional Chinese medicine residue: It comes from the discarded residue of traditional Chinese medicine processing plants, and its main components are the residues of medicinal plants such as angelica and astragalus;

[0068] Edible fungus waste: waste culture medium after shiitake mushroom cultivation;

[0069] Crop straw: one or more of corn straw and wheat straw crushed to 2-3 cm;

[0070] Livestock and poultry manure: one or more of chicken manure and cow manure that have been dried and sterilized;

[0071] Wine lees: white wine lees, derived from alcohol factory by-products;

[0072] Vinegar lees: Rice vinegar lees, a by-product of vinegar factories;

[0073] Shell powder: oyster and scallop shells crushed through a 100-mesh sieve;

[0074] Mineral humic acid powder: purchased from the agricultural supplies market, humic acid content ≥ 70%;

[0075] Three-element compound fertilizer: commercially available, nitrogen, phosphorus and potassium mass ratio 1:1:1;

[0076] EM bacteria: a composite bacterial agent containing photosynthetic bacteria and lactic acid bacteria, with a viable count of ≥10 8 CFU / g;

[0077] Seaweed extract: powder extracted from brown algae by enzymatic hydrolysis, containing seaweed polysaccharides ≥30%;

[0078] Azelaic acid, γ-aminobutyric acid, and γ-polyglutamic acid: all were commercially available analytical grade reagents.

[0079] Example 1

[0080] A composite matrix formula for promoting the robust growth of citrus roots, comprising, by weight:

[0081] 20 parts of traditional Chinese medicine residues, 15 parts of edible fungus waste, 10 parts of corn straw, 8 parts of chicken manure, 5 parts of white wine lees, 5 parts of rice vinegar lees, 3 parts of shell powder, 2 parts of mineral humic acid powder, 3 parts of ternary compound fertilizer with a ratio of nitrogen, phosphorus and potassium of 1:1:1, 0.5 parts of EM bacteria, and 1 part of seaweed extract.

[0082] Preparation method:

[0083] Mixing organic raw materials: uniformly mixing the above-mentioned Chinese medicine residues, edible fungus waste, corn stalks, chicken manure, white wine lees, and rice vinegar lees to obtain a first mixture;

[0084] Mixing inorganic and nutrient components: uniformly mixing shell powder, mineral humic acid powder, and ternary compound fertilizer to obtain a second mixture;

[0085] Preparation of bacterial solution and fermentation: Prepare bacterial solution by mixing EM bacteria with water (the concentration of bacterial solution should be sufficient to cover the surface of the first mixture), mix with the first mixture and ferment;

[0086] Mixing and molding: uniformly mixing the fermented first mixture, the second mixture, and the seaweed extract;

[0087] Drying treatment: The mixed matrix is ​​naturally dried to obtain a composite matrix.

[0088] Example 2

[0089] A composite matrix formula for promoting the robust growth of citrus roots, comprising, by weight:

[0090] 25 parts of traditional Chinese medicine residues, 20 parts of edible fungus waste, 15 parts of wheat straw, 12 parts of cow dung, 8 parts of brewer's grains, 8 parts of aged vinegar grains, 5 parts of shell powder, 4 parts of mineral humic acid powder, 5 parts of ternary compound fertilizer with a ratio of nitrogen, phosphorus and potassium of 1.5:1:1, 1.2 parts of EM bacteria, and 2.5 parts of seaweed extract.

[0091] The preparation method is the same as that of Example 1.

[0092] Example 3

[0093] A composite matrix formula for promoting the robust growth of citrus roots, comprising, by weight:

[0094] 30 parts of traditional Chinese medicine residues, 25 parts of edible fungus waste, 20 parts of rice straw, 15 parts of sheep manure, 10 parts of white wine lees, 10 parts of rice vinegar lees, 8 parts of shell powder, 6 parts of mineral humic acid powder, 7 parts of nitrogen, phosphorus and potassium 2:1:1 triple compound fertilizer, 2 parts of EM bacteria, and 4 parts of seaweed extract.

[0095] The preparation method is the same as that of Example 1.

[0096] Example 4

[0097] A composite matrix formula for promoting the healthy growth of citrus roots is prepared by adding 0.15 parts of azelaic acid to the formula of Example 2, and the remaining raw materials and preparation method are the same as those of Example 2.

[0098] Example 5

[0099] A composite matrix formula for promoting the healthy growth of citrus roots is prepared by adding 0.04 parts of gamma-aminobutyric acid and 0.03 parts of gamma-polyglutamic acid to the formula of Example 2, and the remaining raw materials and preparation method are the same as those of Example 2.

[0100] Example 6

[0101] A composite matrix formula for promoting the healthy growth of citrus roots, which differs from Example 2 in that the crop straw is a mixture of corn straw and wheat straw, the mass ratio of corn straw to wheat straw is 1:1, and the remaining raw materials and preparation method are the same as Example 2.

[0102] Example 7

[0103] A composite matrix formula for promoting the healthy growth of citrus roots is different from Example 2 in that: the livestock and poultry manure is a mixture of chicken manure and cow manure, the mass ratio of chicken manure to cow manure is 1:2, and the remaining raw materials and preparation method are the same as Example 2.

[0104] Example 8

[0105] A composite matrix formula for promoting the robust growth of citrus roots, which differs from Example 2 in that: the distiller's grains are a mixture of white wine grains and beer grains, the mass ratio of the white wine grains to the beer grains being 1:1; the vinegar grains are a mixture of rice vinegar grains and aged vinegar grains, the mass ratio of the rice vinegar grains to the aged vinegar grains being 1:1; and the remaining raw materials and preparation method are the same as those in Example 2.

[0106] Example 9

[0107] A composite matrix formula for promoting the healthy growth of citrus roots is different from Example 2 in that the mass ratio of nitrogen, phosphorus and potassium in the ternary compound fertilizer is 1.8:1:1, and the remaining raw materials and preparation method are the same as Example 2.

[0108] Comparative Example 1

[0109] Formula: 5 parts of triple compound fertilizer and 95 parts of garden soil, mix well. Preparation method: Directly mix the fertilizer with the garden soil.

[0110] Comparative Example 2

[0111] Formula: 30 parts peat, 10 parts decomposed chicken manure, 60 parts garden soil, mix well. Preparation method: directly mix all the raw materials.

[0112] Comparative Example 3

[0113] The difference from Example 2 is that EM bacteria are not included, and the other raw materials and preparation methods are the same as those in Example 2.

[0114] Comparative Example 4

[0115] The difference from Example 2 is that shell powder is not included, and the remaining raw materials and preparation method are the same as Example 2.

[0116] Comparative Example 5

[0117] The difference from Example 2 is that no seaweed extract is included, and the remaining raw materials and preparation method are the same as Example 2.

[0118] In order to verify the effect of the composite matrix of the present application, a citrus seedling cultivation test was carried out on the matrix of the above embodiment and comparative example, and the following indicators were tested:

[0119] Root growth index: After 3 months of cultivation, the longest taproot length of the seedlings and the fresh weight of the washed and weighed roots were measured;

[0120] Rhizosphere microbial activity: The plate count method was used to determine the number of actinomycetes and beneficial bacteria in the rhizosphere soil;

[0121] Physical properties of the matrix: Determine the total porosity of the matrix to form the air permeability index, and the maximum water holding capacity to form the water retention index;

[0122] Stress resistance index: Reduce watering frequency by 30% to simulate drought conditions, and measure root survival rate after 1 month of cultivation.

[0123] The test results of each indicator are shown in the following table:

[0124]

[0125]

[0126] From the above table:

[0127] By comparing Examples 1-3 with Comparative Examples 1-2, it can be seen that the composite matrix of the present application significantly improves the root length, fresh root weight and the number of beneficial bacteria through the synergistic effect of organic materials such as traditional Chinese medicine residues and edible fungus waste with ternary compound fertilizer, EM strains and seaweed extracts, thereby solving the problem of restricted root growth caused by incomplete nutrients and low microbial activity in traditional matrices.

[0128] By comparing Example 2 with Comparative Example 4, it can be seen that the addition of shell powder increases the total porosity of the matrix from 38.5% to 51.7%, indicating that its porous structure effectively optimizes the air permeability and solves the problem of insufficient air permeability of traditional matrices; and the addition of mineral humic acid ensures the maximum water holding capacity at around 58%, achieving a balance between air permeability and water retention.

[0129] Comparison of Example 2 with Comparative Examples 3 and 5 shows that EM strains can significantly increase the number of beneficial bacteria in the rhizosphere, from 18.2×10 6 CFU / g increased to 35.8×10 6 CFU / g, seaweed extract can promote root absorption, and the root fresh weight increases from 9.6g to 12.3g. Both of them together enhance root vitality.

[0130] The drought survival rates of Example 4 containing azelaic acid and Example 5 containing γ-aminobutyric acid and γ-polyglutamic acid reached 90% and 93%, respectively, which were significantly higher than 88% of Example 2, indicating that the addition of γ-aminobutyric acid and γ-polyglutamic acid further improved the root stress resistance and disease resistance, solving the problem of insufficient stress resistance of traditional substrates.

[0131] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A composite matrix formula for promoting the healthy growth of citrus roots, characterized in that: The invention comprises the following components in parts by weight: 20-30 parts of traditional Chinese medicine residues, 15-25 parts of edible fungus waste, 10-20 parts of crop straws, 8-15 parts of livestock and poultry manure, 5-10 parts of distiller's grains, 5-10 parts of vinegar grains, 3-8 parts of shell powder, 2-6 parts of mineral humic acid powder, 3-7 parts of ternary compound fertilizer, 0.5-2 parts of EM bacteria and 1-4 parts of seaweed extract.

2. A composite matrix formula for promoting healthy root growth of citrus according to claim 1, characterized in that: The shell powder is prepared from the shells of oysters, conches, clams, scallops, shellfish, mussels, white clams and razor clams.

3. The composite matrix formula for promoting the healthy growth of citrus roots according to claim 1, characterized in that: The traditional Chinese medicine residue is biologically fermented and contains nitrogen, phosphorus, potassium, calcium, magnesium, silicon, sulfur, iron, manganese, copper, zinc, boron and molybdenum after fermentation.

4. The composite matrix formula for promoting the healthy growth of citrus roots according to claim 1, characterized in that: The invention also includes azelaic acid, and the weight portion of the azelaic acid is 0.05-0.25 parts.

5. The composite matrix formula for promoting the healthy growth of citrus roots according to claim 1, characterized in that: The invention also comprises gamma-aminobutyric acid and gamma-polyglutamic acid, wherein the weight portion of the gamma-aminobutyric acid is 0.04 parts, and the weight portion of the gamma-polyglutamic acid is 0.03 parts.

6. The composite matrix formula for promoting the healthy growth of citrus roots according to claim 1, characterized in that: The crop straw is one or more of corn straw, wheat straw, and rice straw.

7. The composite matrix formula for promoting the healthy growth of citrus roots according to claim 1, characterized in that: The livestock and poultry manure is one or more of chicken manure, cow manure and sheep manure.

8. The composite matrix formula for promoting the healthy growth of citrus roots according to claim 1, characterized in that: The lees are one or more of white wine lees and beer lees, and the vinegar lees are one or more of rice vinegar lees and aged vinegar lees.

9. The composite matrix formula for promoting the healthy growth of citrus roots according to claim 1, characterized in that: The mass ratio of nitrogen, phosphorus and potassium in the ternary compound fertilizer is 1:1:1 to 2:1:

1.

10. A method for preparing a composite matrix formula for promoting the healthy growth of citrus roots, which is applied to the composite matrix formula for promoting the healthy growth of citrus roots according to any one of claims 1 to 9, characterized in that: The following steps are involved: Mixing organic raw materials: mixing Chinese medicinal residues, edible fungus waste, crop straw, livestock and poultry manure, distiller's grains, and vinegar grains to obtain a first mixture; Mixing inorganic and nutrient components: uniformly mixing shell powder, mineral humic acid powder, and ternary compound fertilizer to obtain a second mixture; Preparation of bacterial solution and fermentation: preparing a bacterial solution by mixing EM bacteria and water at a mass ratio of 1:150, and fermenting the bacterial solution with the first mixture; Mixing and forming: uniformly mixing the fermented first mixture, the second mixture and the seaweed extract; Drying treatment: The mixed matrix is ​​dried to obtain a composite matrix.

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