Fruit tree seedling raising method based on microbial technology

Abstract

The invention provides a fruit tree seedling raising method based on a microbial technology. The method comprises the following steps: selecting a seedling raising land and preparing the land; selecting a land as a seedling raising land from a field which is originally planted for more than three years, and digging ditches along the edge of the seedling raising land; removing 30 cm of soil on the upper side of the seedling raising land, retaining the soil layer in the soil central area, mixing the soil layer in the soil central area around the field with the soil retained in the seedling raising land, and supplementing the seedling raising land to the initial height; seed treatment: taking naturally mature seeds, and performing disinfection treatment; preparation before seedling culture: stirring the disinfected seeds and the granular culture medium together, and fully mixing the seeds and the granular culture medium; sowing: sowing the mixed seeds and the culture medium into a seedling raising field; water and fertilizer management is conducted after sowing, and weed treatment and pest control are conducted regularly, a large number of seedlings are harvested at a time in a shorter time, the seedlings obtained through seedling raising are more robust, and follow-up transplanting and grafting are facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of seed seedling cultivation, in particular to a fruit tree seedling cultivation method based on microbial technology. Background Art

[0002] Seeds are reproductive bodies unique to gymnosperms and angiosperms. They are formed by ovules through pollination and fertilization. Seeds generally consist of three parts: seed coat, embryo and endosperm. Some plants' mature seeds only have seed coat and embryo. The formation of seeds allows the young sporophyte ovules to be protected by the mother and get sufficient nutrients like the fetus of mammals. Seeds also have various structures suitable for dissemination or resistance to adverse conditions, creating good conditions for the continuation of plant races.

[0003] The current seedling raising methods for obtaining a large number of seedlings are divided into seed seedling raising method and cutting method. Although the cutting method can maintain the shape of the parent, it will cause the root system of the plant to be weak, while the seed seedling raising method can ensure that the root system of the fruit tree is strong. However, the current fruit tree seed seedling raising method is specifically carried out through seed treatment and subsequent sowing. The seedling raising program is not perfect enough, the seed seedling raising method has a long cycle, and the seedling emergence rate is not high. In addition, during the seed seedling raising process, if there are insufficient microorganisms in the soil, the seed seedling raising cycle will be further prolonged, and the seedlings raised will not be strong enough. Therefore, a new fruit tree seedling raising method is urgently needed. Summary of the invention

[0004] Technical issues solved

[0005] In view of the deficiencies in the prior art, the present invention provides a fruit tree seedling cultivation method based on microbial technology to solve the problems raised in the above background technology.

[0006] Technical Solution

[0007] To achieve the above objectives, the present invention is implemented by the following technical scheme: a fruit tree seedling raising method based on microbial technology, the steps of which are as follows:

[0008] S1: site selection and land preparation for nursery;

[0009] S11: Select a piece of land from a field that has been planted for more than three years as a nursery ground, and dig a ditch along the edge of the nursery ground;

[0010] S12: Remove the soil 30cm above the nursery ground, and keep the soil layer in the center of the soil. Take the soil layer in the center of the soil around the field and mix it with the soil retained in the nursery ground, and fill the nursery ground to the initial height.

[0011] S2: Seed treatment: Take naturally mature seeds and disinfect them;

[0012] S3: Preparation before seedling cultivation: Stir the sterilized seeds and granular culture medium together to mix the two thoroughly;

[0013] S4: Sowing: Sow the mixed seeds and culture medium together in the nursery ground;

[0014] S5: Post-sowing management: Carry out water and fertilizer management after sowing, and regularly carry out weed control and pest and disease control.

[0015] As a preferred embodiment of the present invention, the depth of the ditch in S1 is 50-70 cm, and a drainage ditch connected to the ditch is provided on the seedling raising land.

[0016] As a preferred embodiment of the present invention, the seed disinfection process in S2 includes: using a diluted disinfectant to disinfect the seeds by soaking, rinsing the seeds with clean water after soaking, and drying the seeds in the shade.

[0017] As a preferred embodiment of this embodiment, before the sterilized seeds are mixed with the granular culture medium in S3, the step further includes spraying clean water on the surface of the seeds to wet the surface of the seeds.

[0018] As a preferred embodiment of this embodiment, the granular culture medium in S3 is composed of the following raw materials by weight: 10-15 parts of soil from the nursery ground, 40-45 parts of organic matter, 6-8 parts of diatomaceous earth, 10-15 parts of chitosan, 5-10 parts of silica, 0.5-1 part of compound bacterial agent, and 2-5 parts of starch.

[0019] As a preferred embodiment of this embodiment, the method for preparing the culture medium includes:

[0020] The water, soil from the nursery ground, organic matter and diatomaceous earth are mixed evenly according to the mass parts, and granulated to obtain the matrix core particles;

[0021] After the matrix centrioles are placed in a solution containing a composite bacterial agent and mixed completely, and the solution of the composite bacterial agent completely infiltrates the matrix centrioles, a matrix centrioles containing microorganisms are obtained;

[0022] The matrix centrioles containing microorganisms are completely mixed with chitosan, silica and starch and then granulated to obtain a granular culture medium.

[0023] As a preference of this embodiment, the silica particle size is no more than half of the seed particle size.

[0024] As a preference of this embodiment, the mass ratio of the seeds to the granular culture medium is 1:8-10.

[0025] As a preferred embodiment of this embodiment, the seedling site selection and land preparation process and the seed treatment process are carried out simultaneously, and the pre-seedling preparation work and seed sowing work are completed within 1 day after the seedling site selection and land preparation are completed.

[0026] Beneficial Effects

[0027] The present invention provides a fruit tree seedling raising method based on microbial technology, which has the following beneficial effects:

[0028] The present invention can improve the initial stage of seed seedling raising by utilizing the soil layer rich in microorganisms in the original soil. The large number of enriched microorganisms can decompose organic matter in the initial stage of seed germination to produce a large amount of nutrients, maintain the nutrients for the seeds to quickly break the shell, and prepare the culture medium by secondary granulation. By stirring and mixing the culture medium with the seeds, the seed shell will be weakened by the friction of the granular culture medium during the stirring process, and the granular culture medium will also be broken due to impact. The powdered culture medium will stick to the surface of the seed, which can improve the seed germination rate, and the culture medium adhered to the outside of the seed also obtains better plant traits. The culture medium containing microorganisms adhered to the outside of the seed can make the plant have a better growth trend, shorten the germination time, and facilitate germination. Therefore, the present application can breed a large number of strong seedlings, which is beneficial to subsequent grafting. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is the positional relationship between the field, nursery ground and ditch in Example 1 of the present invention. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0034] The disclosure below provides many different embodiments or examples to realize different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplicity and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0035] Example 1

[0036] like Figure 1 As shown, the embodiment of the present invention provides a fruit tree seedling cultivation method based on microbial technology, and the steps are as follows:

[0037] S1: site selection and land preparation for nursery;

[0038] S11: Select a piece of land from a field that has been planted for more than three years as a nursery ground, and dig a ditch along the edge of the nursery ground;

[0039] S12: Remove the soil 30cm above the nursery ground, and keep the soil layer in the center of the soil. Take the soil layer in the center of the soil around the field and mix it with the soil retained in the nursery ground, and fill the nursery ground to the initial height.

[0040] S2: Seed treatment: Take naturally mature seeds and disinfect them;

[0041] S3: Preparation before seedling cultivation: Stir the sterilized seeds and granular culture medium together to mix the two thoroughly;

[0042] S4: Sowing: Sow the mixed seeds and culture medium together in the nursery ground;

[0043] S5: Post-sowing management: Carry out water and fertilizer management after sowing, and regularly carry out weed control and pest and disease control.

[0044] Furthermore, the depth of the ditch in S1 is 50-70 cm, and a drainage ditch connected to the ditch is opened on the seedling raising land.

[0045] Specifically, by manually digging the soil layer of the nursery ground, based on the selected range of the nursery ground, the surface 30 cm of soil of the nursery ground is dug out, and the middle 12-17 cm of soil layer of the nursery ground is retained. Then, the soil with a depth of 10-20 cm around the nursery ground is excavated and transferred to the nursery ground so that the thickness of the soil layer of the nursery ground is consistent with that before digging.

[0046] Utilizing the original soil layer rich in microorganisms can improve the initial stage of seed seedling raising. The large number of enriched microorganisms can decompose organic matter in the early stage of seed germination to produce a large amount of nutrients, maintaining the nutrition for seeds to quickly break the shell.

[0047] Furthermore, the seed disinfection process in S2 includes: using a diluted disinfectant to disinfect the seeds by soaking, rinsing the seeds with clean water after soaking, and drying the seeds in the shade.

[0048] It should be noted that the disinfectant selected for disinfection is determined based on the type of seeds that need to be grown.

[0049] Furthermore, before the sterilized seeds are mixed with the granular culture medium in S3, clean water is sprayed on the surface of the seeds to wet the surface of the seeds.

[0050] Among them, the manifestation of seed infiltration is that traces of water can be seen on the surface of the seeds, but there are no water droplets on the surface of the seeds.

[0051] Furthermore, the granular culture medium in S3 is composed of the following raw materials by weight: 10-15 parts of soil from a nursery ground, 40-45 parts of organic matter, 6-8 parts of diatomaceous earth, 10-15 parts of chitosan, 5-10 parts of silica, 0.5-1 part of a composite bacterial agent, and 2-5 parts of starch.

[0052] Furthermore, the method for preparing the culture medium comprises:

[0053] The water, soil from the nursery ground, organic matter and diatomaceous earth are mixed evenly according to the mass parts, and granulated to obtain the matrix core particles;

[0054] After the matrix centrioles are placed in a solution containing a composite bacterial agent and mixed completely, and the solution of the composite bacterial agent completely infiltrates the matrix centrioles, a matrix centrioles containing microorganisms are obtained;

[0055] It is understandable that the compound bacterial agent solution can be adapted to adjust the types of microorganisms and beneficial bacteria for different fruit trees.

[0056] The matrix centrioles containing microorganisms are completely mixed with chitosan, silica and starch and then granulated to obtain a granular culture medium.

[0057] Furthermore, the silica particle size is no more than half of the seed particle size.

[0058] Furthermore, the mass ratio of the seeds to the granular culture medium is 1:8-10.

[0059] Furthermore, the nursery site selection and land preparation process and the seed treatment process are carried out simultaneously, and the pre-seedling preparation work and seed sowing work are completed within 1 day after the nursery site selection and land preparation are completed.

[0060] The seed seedling raising method of the present application has a seed germination rate of 95%-99%. The germination rate will vary accordingly according to different varieties of seeds. The survival rate after transplanting is more than 96%, and the transplanted seedlings are strong and almost free of root rot and disease.

[0061] Example 2

[0062] This example further illustrates the fruit tree seedling cultivation method based on microbial technology described in Example 1:

[0063] Step 1: Select a piece of land in the loofah field that has been planted for more than three years as the nursery ground, and dig a ditch along the edge of the nursery ground; remove the soil 30CM above the nursery ground, and keep the soil layer in the center area of ​​the soil removed, take the soil layer in the center area of ​​the soil around the field and mix it with the soil retained in the nursery ground, and fill the nursery ground to the initial height;

[0064] S2: Select healthy and pest-free loofah seeds, soak them in 1.5% formalin solution for disinfection, rinse them with water and dry them in the shade for later use;

[0065] It should be noted that the seedling nursery site selection and land preparation process and the seed treatment process are carried out simultaneously, and the pre-seedling preparation work and seed sowing work are completed within 1 day after the seedling nursery site selection and land preparation are completed.

[0066] S3: soaking the surface of the seeds with water by spraying, and stirring the soaked seeds and the granular culture medium;

[0067] Preparation before seedling raising: Stir the sterilized seeds and granular culture medium together to mix the two thoroughly. During the stirring process, the seed shell will be weakened by the friction of the granular culture medium, and the granular culture medium will also be broken by the impact, and the powdered culture medium will stick to the surface of the seeds;

[0068] The granular culture medium is composed of the following raw materials by weight: 10-15 parts of soil from a nursery ground, 40-45 parts of organic matter, 6-8 parts of diatomaceous earth, 10-15 parts of chitosan, 5-10 parts of silica, 0.5-1 parts of a composite bacterial agent and 2-5 parts of starch.

[0069] The raw material composition of the granular culture medium of this embodiment includes: 13 parts of soil from the nursery ground, 45 parts of organic matter, 7 parts of diatomaceous earth, 13 parts of chitosan, 10 parts of silica, 1.8 parts of compound bacterial agent, and 5 parts of starch.

[0070] Wherein, the preparation method of the culture medium comprises:

[0071] The water, soil from the nursery ground, organic matter and diatomaceous earth are mixed evenly according to the mass parts, and granulated to obtain the matrix core particles;

[0072] After the matrix centrioles are placed in a solution containing a composite bacterial agent and mixed completely, and the solution of the composite bacterial agent completely infiltrates the matrix centrioles, a matrix centrioles containing microorganisms are obtained;

[0073] The matrix centrioles containing microorganisms are completely mixed with chitosan, silica and starch and then granulated to obtain a granular culture medium.

[0074] It is necessary that the silica particle size does not exceed half of the particle size of the loofah seed. The silica can effectively rub the seed surface, thereby weakening the thickness of the seed shell during mixing and making the seed shell rough. At the same time, when the granular culture medium is mixed, it collides with each other to produce powder, which will stick to the outside of the seed.

[0075] Required, the mass ratio of the sponge gourd seeds to the granular culture medium is 1:8-10.

[0076] S4: Sowing the mixed seeds and culture medium together in the nursery ground;

[0077] S5: Carry out water and fertilizer management after sowing, and regularly carry out weed control and pest and disease control.

[0078] Example 3

[0079] This example further illustrates the fruit tree seedling cultivation method based on microbial technology described in Example 1:

[0080] Step 1: Select a piece of land as the nursery ground in the original sugar orange nursery ground where it has been planted for more than three years, and dig a ditch along the edge of the nursery ground; remove the soil 30CM above the nursery ground, and keep the soil layer in the center area of ​​the soil removed, take the soil layer in the center area of ​​the soil around the field and mix it with the soil retained in the nursery ground, and fill the nursery ground to the initial height;

[0081] Step 2: Select healthy, disease-free and insect-free tangerine seeds, soak and disinfect them in 1.5% formalin solution, rinse and dry in the shade for later use;

[0082] It should be noted that the seedling nursery site selection and land preparation process and the seed treatment process are carried out simultaneously, and the pre-seedling preparation work and seed sowing work are completed within 1 day after the seedling nursery site selection and land preparation are completed.

[0083] Step 3: Soak the surface of the seeds in clean water by spraying, and stir the soaked seeds with the granular culture medium;

[0084] Preparation before seedling raising: Stir the sterilized seeds and granular culture medium together to mix the two thoroughly. During the stirring process, the seed shell will be weakened by the friction of the granular culture medium, and the granular culture medium will also be broken by the impact, and the powdered culture medium will stick to the surface of the seeds;

[0085] The granular culture medium is composed of the following raw materials by weight: 10-15 parts of soil from a nursery ground, 40-45 parts of organic matter, 6-8 parts of diatomaceous earth, 10-15 parts of chitosan, 5-10 parts of silica, 0.5-1 parts of a composite bacterial agent and 2-5 parts of starch.

[0086] The raw material composition of the granular culture medium of this embodiment includes: 10 parts of soil from the nursery ground, 42 parts of organic matter, 6 parts of diatomaceous earth, 10 parts of chitosan, 8 parts of silica, 0.5 parts of compound bacterial agent, and 2 parts of starch.

[0087] Wherein, the preparation method of the culture medium comprises:

[0088] The water, soil from the nursery ground, organic matter and diatomaceous earth are mixed evenly according to the mass parts, and granulated to obtain the matrix core particles;

[0089] After the matrix centrioles are placed in a solution containing a composite bacterial agent and mixed completely, and the solution of the composite bacterial agent completely infiltrates the matrix centrioles, a matrix centrioles containing microorganisms are obtained;

[0090] The matrix centrioles containing microorganisms are completely mixed with chitosan, silica and starch and then granulated to obtain a granular culture medium.

[0091] It is necessary that the silica particle size does not exceed half of the particle size of the sugar orange seed. The silica can effectively rub the seed surface, thereby weakening the thickness of the seed shell during mixing and making the seed shell rough. At the same time, when the granular culture medium is mixed, it will collide with each other to produce powder, and the powder will stick to the outside of the seed.

[0092] It is required that the mass ratio of the tangerine seeds to the granular culture medium is 1:8-10.

[0093] Step 4: Sow the mixed seeds and culture medium together in the nursery ground;

[0094] Step 5: Carry out water and fertilizer management after sowing, and regularly carry out weed control and pest and disease control.

[0095] Comparative Example 1

[0096] Step 1: Select a piece of land in the loofah field that has been planted for more than three years as the nursery ground, and dig a ditch along the edge of the nursery ground; remove the soil 30CM above the nursery ground, and keep the soil layer in the center area of ​​the soil removed, take the soil layer in the center area of ​​the soil around the field and mix it with the soil retained in the nursery ground, and fill the nursery ground to the initial height;

[0097] Step 2: Select healthy and pest-free loofah seeds, use 1.5% formalin solution for soaking and disinfection, rinse and dry in the shade after disinfection;

[0098] Step 3: Soak the surface of the seeds in clean water by spraying, and stir the soaked seeds with the granular culture medium;

[0099] Among them, the culture medium is the universal culture medium for growing sugar orange seeds and seedlings at present;

[0100] Step 4: Sow the mixed seeds and culture medium together in the nursery ground;

[0101] Step 5: Carry out water and fertilizer management after sowing, and regularly carry out weed control and pest and disease control.

[0102] Comparative Example 2

[0103] Step 1: Select a piece of land as the nursery ground in the original sugar orange nursery ground where it has been planted for more than three years, and dig a ditch along the edge of the nursery ground; remove the soil 30CM above the nursery ground, and keep the soil layer in the center area of ​​the soil removed, take the soil layer in the center area of ​​the soil around the field and mix it with the soil retained in the nursery ground, and fill the nursery ground to the initial height;

[0104] Step 2: Select healthy, disease-free and insect-free tangerine seeds, soak and disinfect them in 1.5% formalin solution, rinse and dry in the shade for later use;

[0105] Step 3: Soak the surface of the seeds in clean water by spraying, and stir the soaked seeds and the granular culture medium;

[0106] Among them, the culture medium is the universal culture medium for growing sugar orange seeds and seedlings at present;

[0107] Step 4: Sow the mixed seeds and culture medium together in the nursery ground;

[0108] Step 5: Carry out water and fertilizer management after sowing, and regularly carry out weed control and pest and disease control.

[0109] Experimental Example 1:

[0110] The breeding methods of Example 2 and Comparative Example 1 were respectively used to raise seed seedlings of loofah. After the seeds emerged, the emergence rate was statistically analyzed, and the growth traits of the plants were investigated. The results are shown in Table 1.

[0111] Table 1 Statistics of germination rate and plant growth characteristics

[0112] Seedling time / d Plant height / CM Root length / CM Seedling rate / % Example 2 19 43 18 97 Comparative Example 1 27 35 12 91

[0113] As can be seen from Table 1, the present application can improve the seed germination rate by mixing and rubbing the seeds with a granular culture medium to weaken the influence of the outer shell after seed selection, and the seeds adhering to the culture medium on the outside also obtain better plant traits. This is because the culture medium containing microorganisms adheres to the outside of the seeds, which can enable the plants to have a better growth trend, shorten the germination time, and facilitate germination. The results of Example 2 and Comparative Example 1 show that the robustness of seed seedlings can be effectively improved by adhering to the culture medium and destroying the seed shell, and the time required for loofah seedlings can be reduced, and the germination rate of loofah seed seedlings can also be improved.

[0114] Experimental Example 2:

[0115] The breeding methods of Example 3 and Comparative Example 2 were respectively used to raise sugar orange seeds. After the seeds emerged, the emergence rate was statistically analyzed, and the growth characteristics of the plants were investigated. The results are shown in Table 1.

[0116] Table 2 Statistics of germination rate and plant growth characteristics

[0117]

[0118]

[0119] As can be seen from Table 1, the present application can improve the seed germination rate by mixing and rubbing the seeds with a granular culture medium to weaken the influence of the outer shell after seed selection, and the seed external adhesion culture medium also obtains better plant traits. This is because the culture medium containing microorganisms adheres to the outside of the seeds, which can enable the plants to have a better growth trend, shorten the germination time, and facilitate germination. The results of Example 3 and Comparative Example 2 show that the robustness of seed seedlings can be effectively improved by attaching the culture medium and destroying the seed shell, and the time required for sugar orange seedlings can be reduced, and the germination rate of sugar orange seed seedlings can also be improved.

[0120] Therefore, the seedling raising method of the present invention can effectively improve the survival rate of seed seedlings and the plant shape after seed seedling raising.

[0121] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fruit tree seedling raising method based on microbial technology, characterized in that: The steps are as follows: S1: site selection and land preparation for nursery; S11: Select a piece of land from a field that has been planted for more than three years as a nursery ground, and dig a ditch along the edge of the nursery ground; S12: Remove the soil 30cm above the nursery ground, and keep the soil layer in the center of the soil. Take the soil layer in the center of the soil around the field and mix it with the soil retained in the nursery ground, and fill the nursery ground to the initial height. S2: Seed treatment: Take naturally mature seeds and disinfect them; S3: Preparation before seedling cultivation: Stir the sterilized seeds and granular culture medium together to mix the two thoroughly; S4: Sowing: Sow the mixed seeds and culture medium together in the nursery ground; S5: Post-sowing management: Carry out water and fertilizer management after sowing, and regularly carry out weed control and pest and disease control.

2. The method for raising fruit tree seedlings based on microbial technology according to claim 1, characterized in that: The depth of the ditch in S1 is 50-70 cm, and a drainage ditch connected to the ditch is provided on the seedling raising land.

3. The method for raising fruit tree seedlings based on microbial technology according to claim 1, characterized in that: The seed disinfection process in S2 includes: using a diluted disinfectant to disinfect the seeds by soaking, washing the seeds with clean water after soaking, and drying the seeds in the shade.

4. The method for raising fruit tree seedlings based on microbial technology according to claim 1, characterized in that: Before the sterilized seeds are mixed with the granular culture medium in S3, the process also includes spraying clean water on the surface of the seeds to wet the surface of the seeds.

5. The method for raising fruit tree seedlings based on microbial technology according to claim 1, characterized in that: The granular culture medium in S3 is composed of the following raw materials by weight: 10-15 parts of soil from a nursery ground, 40-45 parts of organic matter, 6-8 parts of diatomaceous earth, 10-15 parts of chitosan, 5-10 parts of silica, 0.5-1 parts of a composite bacterial agent, and 2-5 parts of starch.

6. The method for raising fruit tree seedlings based on microbial technology according to claim 4, characterized in that: The preparation method of the culture medium comprises: The water, soil from the nursery ground, organic matter and diatomaceous earth are mixed evenly according to the mass parts, and granulated to obtain the matrix core particles; After the matrix centrioles are placed in a solution containing a composite bacterial agent and mixed completely, and the solution of the composite bacterial agent completely infiltrates the matrix centrioles, a matrix centrioles containing microorganisms are obtained; The matrix centrioles containing microorganisms are completely mixed with chitosan, silica and starch and then granulated to obtain a granular culture medium.

7. The method for raising fruit tree seedlings based on microbial technology according to claim 5, characterized in that: The silica particle size is no more than half of the seed particle size.

8. The method for raising fruit tree seedlings based on microbial technology according to claim 1, characterized in that: The mass ratio of the seeds to the granular culture medium is 1:8-10.

9. The method for raising fruit tree seedlings based on microbial technology according to claim 1, characterized in that: The seedling raising site selection and land preparation process and the seed treatment process are carried out simultaneously, and the pre-seedling raising preparation work and seed sowing work are completed within 1 day after the seedling raising site selection and land preparation are completed.

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