Vegetable seedling culture substrate taking organic materials as raw materials and preparation method of vegetable seedling culture substrate

Abstract

The invention discloses a vegetable seedling substrate using organic materials as raw materials and a preparation method thereof, and the preparation method comprises the following steps: crushing and dehydrating kitchen garbage to obtain a fermentation raw material; the agricultural organic waste raw materials are mixed according to the proportion, and a mixed matrix is obtained; measuring the carbon-nitrogen ratio of the mixed matrix, adding fermentation raw materials, mixing again, adjusting the carbon-nitrogen ratio, adding a microbial agent, adding water, fermenting in an aerobic fermentation equipment bin, turning once every 10 days, measuring the temperature of a pile body every two days after fermentation until the temperature does not change any more, and ending the fermentation when the temperature does not rise any more after the pile is turned; mixing the fermented organic waste composted material with the mixed matrix in proportion, uniformly stirring, adding auxiliary substances, and uniformly mixing again to obtain the vegetable seedling culture matrix, the vegetable seedling culture substrate provides a technical basis for seedling culture industrialization, is high in nutrient content and stable in property, and contributes to quality improvement and yield increase of crops.

Description

Technical Field

[0001] The invention relates to the technical field of seedling cultivation substrate preparation, and in particular to a vegetable seedling cultivation substrate using organic materials as raw materials and a preparation method thereof. Background Art

[0002] In vegetable production, whether it is the current soil cultivation or the future soilless cultivation, the scattered seedling cultivation will be replaced by centralized seedling cultivation, which is in line with the economic law and the law of production technology development. It is a new trend in vegetable seedling cultivation at home and abroad. After the large-scale specialized centralized seedling production is carried out, the main problem is the lack of appropriate seedling medium.

[0003] Most of the vegetable soilless seedlings are carried out in protected facilities, which are less affected by the adverse climatic conditions in nature and can be raised according to people's predetermined indicators. It can cultivate neat and strong seedlings of various sizes without pests and diseases in a qualitative, quantitative and timely manner as needed. Therefore, in addition to being cheap and abundant in resources, the substrate for vegetable soilless seedlings must also be free of pests and diseases, able to meet the needs of fixing the root system of vegetables during the seedling stage, and ensure that the root system has sufficient water, nutrition and air supply. The substrates currently used for domestic vegetable soilless seedlings include sawdust, bark, peat, peat moss, seed shells, peanut shells, rice husks, carbonized rice husks, coal slag, vermiculite, perlite, rock wool, sand, etc. How to correctly select these substrates is a problem worth studying.

[0004] So far, my country has conducted a lot of research on the selection and matching of cultivation substrates. my country started to develop large-scale artificial synthetic substrates relatively late, but inorganic natural substrates such as gravel and sand have been widely used and promoted.

[0005] At present, the seedling substrates used in my country are mostly peat, vermiculite and other materials, which are mixed in a certain proportion. Peat is a unique product formed after a long period of development and succession in a swamp environment. It is rich in nutrients and can meet the nutritional needs of various crops during seedling cultivation. Due to the non-renewable characteristics of peat, with the popularization of vegetable seedling industrialization in recent years, factory seedling cultivation has received further attention, and the demand for seedling substrates has become increasingly greater. However, peat, as a high-quality seedling substrate, has been massively mined and utilized in recent years. The use of peat will not only cause damage to the living environment of animals and plants, but the continuous depletion of peat resources will also indirectly affect the future development of the vegetable seedling industrialization. Therefore, how to develop a seedling substrate that can replace peat has become an imminent issue.

[0006] Among the many existing substrate options, in addition to peat, inorganic substrates such as rock wool, vermiculite, and perlite are also often used as seedling substrates. However, most of the above-mentioned seedling substrates have problems such as short service life, origin restrictions, or increased seedling costs. For example, rock wool also has the problem of irrigation drainage containing a large amount of nitrate components.

[0007] Therefore, in response to the above problems, the present invention provides a vegetable seedling matrix using organic materials as raw materials and a preparation method, which compares different matrix materials to obtain the most suitable peat replacement formula, providing a technical basis for the industrialization and industrialization of seedling cultivation; the organic material matrix prepared by the present invention has high nutrient content, stable properties and helps to improve the quality and increase yield of crops. Summary of the invention

[0008] The purpose of the present invention is to provide a vegetable seedling cultivation substrate using organic materials as raw materials and a preparation method thereof, so as to provide a technical basis for the industrialization and industrialization of seedling cultivation.

[0009] The purpose of the present invention is achieved through the following technical solutions:

[0010] A method for preparing a vegetable seedling substrate using organic materials as raw materials comprises the following steps:

[0011] (1) Preparation of fermentation raw materials: crushing and dehydrating kitchen waste to obtain fermentation raw materials;

[0012] (2) Organic waste proportion: various agricultural organic waste raw materials are mixed according to proportion to obtain a mixed matrix;

[0013] (3) Fermentation of organic waste: Determine the carbon-nitrogen ratio of the mixed matrix in step (2), add the fermentation raw materials and mix again, adjust the carbon-nitrogen ratio, add microbial agents, add water to adjust the moisture content, bag the waste in woven bags in an aerobic fermentation equipment bin, randomly arrange the waste, stack all the waste together, chop them into a rectangle, cover them with plastic sheets, regularly add water to ferment, turn the pile every 10 days, and measure the temperature of the pile every two days after fermentation until the temperature no longer changes. When the temperature no longer rises after turning the pile, the fermentation is terminated;

[0014] (4) Preparation of vegetable seedling medium: The organic waste decomposed material after fermentation in step (3) is mixed with the mixed medium in proportion, stirred evenly, and then auxiliary substances are added, and the vegetable seedling medium is obtained after mixing again.

[0015] Preferably, in step (1), the particle size of the fermentation raw material is 2 to 4 cm.

[0016] Preferably, in step (2), the agricultural organic waste raw materials are mixed in a volume ratio of corn straw: decomposed cow dung: rice husk: slag = 20:30:30:20.

[0017] Preferably, in step (3), the carbon-nitrogen ratio is adjusted to 24-26:1.

[0018] Preferably, in step (3), 60% to 70% of water is added to adjust the moisture content to 10% to 50%; and the temperature in the aerobic fermentation equipment bin is set at 45°C to 60°C.

[0019] Preferably, in step (4), the fermented organic waste decomposed material and the mixed matrix are mixed in a weight ratio of 20-30:10-20; the mass of the auxiliary substance is 0.1% to 0.5% of the total weight of the organic waste decomposed material and the mixed matrix.

[0020] The present application also provides a vegetable seedling substrate using organic materials as raw materials, which is prepared by the above-mentioned method for preparing the vegetable seedling substrate using organic materials as raw materials.

[0021] Due to the application of the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0022] 1. The vegetable seedling substrate of the present invention provides a technical basis for the industrialization and industrialization of seedling cultivation; the organic material substrate prepared by the present invention has high nutrient content, stable properties and helps to improve the quality and increase the yield of crops;

[0023] 2. The vegetable seedling substrate of the present invention uses agricultural organic waste resources as crop seedling substrate raw materials; this approach can not only alleviate the environmental pollution problem of agricultural organic waste, but also reduce the production cost of the seedling substrate, which has important theoretical significance and practical value for the ecological utilization of agricultural organic materials and the promotion of the sustainable development of the vegetable seedling industry;

[0024] 3. The vegetable seedling substrate of the present invention uses recyclable organic waste and agricultural waste as raw materials, which can effectively reduce the use of peat and peat, and can also solve the problem of single utilization direction of the back-end products of agricultural organic waste disposal. DETAILED DESCRIPTION

[0025] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, a specific implementation scheme is now described in detail.

[0026] The present invention is further described below in conjunction with the embodiments, but the present invention is not limited to the following embodiments. The implementation conditions used in the embodiments can be further adjusted according to the different requirements of specific use, and the implementation conditions not indicated are conventional conditions in the industry. The technical features involved in each embodiment of the present invention can be combined with each other as long as they do not conflict with each other.

[0027] Example 1

[0028] This embodiment provides a method for preparing a vegetable seedling substrate using organic materials as raw materials, comprising the following steps:

[0029] (1) Preparation of fermentation raw materials: Grinding and dehydrating kitchen waste to obtain fermentation raw materials, wherein the particle size of the fermentation raw materials is 3 cm;

[0030] (2) Organic waste ratio: various agricultural organic waste raw materials are mixed in a volume ratio of corn straw: decomposed cow dung: rice husk: slag = 20:30:30:20 to obtain a mixed matrix;

[0031] (3) Fermentation of organic waste: Determine the carbon-nitrogen ratio of the mixed matrix in step (2), add the fermentation raw materials and mix again, adjust the carbon-nitrogen ratio to 24:1, add microbial agents, add 60% water to adjust the moisture content to 30%, set the temperature in the aerobic fermentation equipment bin to 55°C, use 1m×0.5m woven bags in the aerobic fermentation equipment bin to bag the waste, randomly arrange the wastes, stack all the wastes together, chop them into a rectangular shape, cover them with plastic sheets, regularly add water for fermentation, turn the pile every 10 days, and measure the pile temperature every two days after fermentation until the temperature no longer changes. When the temperature no longer rises after turning the pile, the fermentation is over;

[0032] (4) Preparation of vegetable seedling medium: The organic waste decomposed material after fermentation in step (3) is mixed with the mixed medium in a weight ratio of 25:15, and after stirring evenly, an auxiliary substance is added, wherein the mass of the auxiliary substance is 0.3% of the total weight of the organic waste decomposed material and the mixed medium, and the vegetable seedling medium is obtained after mixing again.

[0033] Example 2

[0034] This embodiment provides a method for preparing a vegetable seedling substrate using organic materials as raw materials, comprising the following steps:

[0035] (1) Preparation of fermentation raw materials: Grinding and dehydrating kitchen waste to obtain fermentation raw materials, wherein the particle size of the fermentation raw materials is 3 cm;

[0036] (2) Organic waste ratio: various agricultural organic waste raw materials are mixed in a volume ratio of corn straw: decomposed cow dung: rice husk: slag = 20:30:30:20 to obtain a mixed matrix;

[0037] (3) Fermentation of organic waste: Determine the carbon-nitrogen ratio of the mixed matrix in step (2), add the fermentation raw materials and mix again, adjust the carbon-nitrogen ratio to 25:1, add microbial agents, add 60% water to adjust the moisture content to 30%, set the temperature in the aerobic fermentation equipment bin to 55°C, use 1m×0.5m woven bags in the aerobic fermentation equipment bin to bag the waste, randomly arrange the wastes, stack all the wastes together, chop them into a rectangular shape, cover them with plastic sheets, regularly add water for fermentation, turn the pile every 10 days, and measure the pile temperature every two days after fermentation until the temperature no longer changes. When the temperature no longer rises after turning the pile, the fermentation is over;

[0038] (4) Preparation of vegetable seedling medium: The organic waste decomposed material after fermentation in step (3) is mixed with the mixed medium in a weight ratio of 25:15, and after stirring evenly, an auxiliary substance is added, wherein the mass of the auxiliary substance is 0.3% of the total weight of the organic waste decomposed material and the mixed medium, and the vegetable seedling medium is obtained after mixing again.

[0039] Example 3

[0040] This embodiment provides a method for preparing a vegetable seedling substrate using organic materials as raw materials, comprising the following steps:

[0041] (1) Preparation of fermentation raw materials: Grinding and dehydrating kitchen waste to obtain fermentation raw materials, wherein the particle size of the fermentation raw materials is 3 cm;

[0042] (2) Organic waste ratio: various agricultural organic waste raw materials are mixed in a volume ratio of corn straw: decomposed cow dung: rice husk: slag = 20:30:30:20 to obtain a mixed matrix;

[0043] (3) Fermentation of organic waste: Determine the carbon-nitrogen ratio of the mixed matrix in step (2), add the fermentation raw materials and mix again, adjust the carbon-nitrogen ratio to 26:1, add microbial agents, add 60% water to adjust the moisture content to 30%, set the temperature in the aerobic fermentation equipment bin to 55°C, use 1m×0.5m woven bags in the aerobic fermentation equipment bin to bag the waste, randomly arrange the wastes, stack all the wastes together, chop them into a rectangular shape, cover them with plastic sheets, regularly add water for fermentation, turn the pile every 10 days, and measure the pile temperature every two days after fermentation until the temperature no longer changes. When the temperature no longer rises after turning the pile, the fermentation is over;

[0044] (4) Preparation of vegetable seedling medium: The organic waste decomposed material after fermentation in step (3) is mixed with the mixed medium in a weight ratio of 25:15, and after stirring evenly, an auxiliary substance is added, wherein the mass of the auxiliary substance is 0.3% of the total weight of the organic waste decomposed material and the mixed medium, and the vegetable seedling medium is obtained after mixing again.

[0045] Example 4

[0046] This embodiment provides a method for preparing a vegetable seedling substrate using organic materials as raw materials, comprising the following steps:

[0047] (1) Preparation of fermentation raw materials: Grinding and dehydrating kitchen waste to obtain fermentation raw materials, wherein the particle size of the fermentation raw materials is 3 cm;

[0048] (2) Organic waste ratio: various agricultural organic waste raw materials are mixed in a volume ratio of corn straw: decomposed cow dung: rice husk: slag = 20:30:30:20 to obtain a mixed matrix;

[0049] (3) Fermentation of organic waste: Determine the carbon-nitrogen ratio of the mixed matrix in step (2), add the fermentation raw materials and mix again, adjust the carbon-nitrogen ratio to 24:1, add microbial agents, add 60% water to adjust the moisture content to 30%, set the temperature in the aerobic fermentation equipment bin to 55°C, use 1m×0.5m woven bags in the aerobic fermentation equipment bin to bag the waste, randomly arrange the wastes, stack all the wastes together, chop them into a rectangular shape, cover them with plastic sheets, regularly add water for fermentation, turn the pile every 10 days, and measure the pile temperature every two days after fermentation until the temperature no longer changes. When the temperature no longer rises after turning the pile, the fermentation is over;

[0050] (4) Preparation of vegetable seedling medium: The organic waste decomposed material after fermentation in step (3) is mixed with the mixed medium in a weight ratio of 20:10, and after stirring evenly, an auxiliary substance is added, wherein the mass of the auxiliary substance is 0.3% of the total weight of the organic waste decomposed material and the mixed medium, and the vegetable seedling medium is obtained after mixing again.

[0051] Example 5

[0052] This embodiment provides a method for preparing a vegetable seedling substrate using organic materials as raw materials, comprising the following steps:

[0053] (1) Preparation of fermentation raw materials: Grinding and dehydrating kitchen waste to obtain fermentation raw materials, wherein the particle size of the fermentation raw materials is 3 cm;

[0054] (2) Organic waste ratio: various agricultural organic waste raw materials are mixed in a volume ratio of corn straw: decomposed cow dung: rice husk: slag = 20:30:30:20 to obtain a mixed matrix;

[0055] (3) Fermentation of organic waste: Determine the carbon-nitrogen ratio of the mixed matrix in step (2), add the fermentation raw materials and mix again, adjust the carbon-nitrogen ratio to 24:1, add microbial agents, add 60% water to adjust the moisture content to 30%, set the temperature in the aerobic fermentation equipment bin to 55°C, use 1m×0.5m woven bags in the aerobic fermentation equipment bin to bag the waste, randomly arrange the wastes, stack all the wastes together, chop them into a rectangular shape, cover them with plastic sheets, regularly add water for fermentation, turn the pile every 10 days, and measure the pile temperature every two days after fermentation until the temperature no longer changes. When the temperature no longer rises after turning the pile, the fermentation is over;

[0056] (4) Preparation of vegetable seedling medium: The organic waste decomposed material after fermentation in step (3) is mixed with the mixed medium in a weight ratio of 30:20, and after stirring evenly, an auxiliary substance is added, wherein the mass of the auxiliary substance is 0.3% of the total weight of the organic waste decomposed material and the mixed medium, and the vegetable seedling medium is obtained after mixing again.

[0057] Comparative Example 1

[0058] This comparative example provides a method for preparing a vegetable seedling substrate using organic materials as raw materials, comprising the following steps:

[0059] (1) Preparation of fermentation raw materials: Grinding and dehydrating kitchen waste to obtain fermentation raw materials, wherein the particle size of the fermentation raw materials is 3 cm;

[0060] (2) Organic waste ratio: various agricultural organic waste raw materials are mixed in a volume ratio of corn straw: decomposed cow dung: rice husk: slag = 20:30:30:20 to obtain a mixed matrix;

[0061] (3) Fermentation of organic waste: Determine the carbon-nitrogen ratio of the mixed matrix in step (2), add the fermentation raw materials and mix again, adjust the carbon-nitrogen ratio to 23:1, add microbial agents, add 60% water to adjust the moisture content to 30%, set the temperature in the aerobic fermentation equipment bin to 55°C, use 1m×0.5m woven bags in the aerobic fermentation equipment bin to bag the waste, randomly arrange the wastes, stack all the wastes together, chop them into a rectangular shape, cover them with plastic sheets, regularly add water for fermentation, turn the pile every 10 days, and measure the pile temperature every two days after fermentation until the temperature no longer changes. When the temperature no longer rises after turning the pile, the fermentation is over;

[0062] (4) Preparation of vegetable seedling medium: The organic waste decomposed material after fermentation in step (3) is mixed with the mixed medium in a weight ratio of 25:15, and after stirring evenly, an auxiliary substance is added, wherein the mass of the auxiliary substance is 0.3% of the total weight of the organic waste decomposed material and the mixed medium, and the vegetable seedling medium is obtained after mixing again.

[0063] Comparative Example 2

[0064] This comparative example provides a method for preparing a vegetable seedling substrate using organic materials as raw materials, comprising the following steps:

[0065] (1) Preparation of fermentation raw materials: Grinding and dehydrating kitchen waste to obtain fermentation raw materials, wherein the particle size of the fermentation raw materials is 3 cm;

[0066] (2) Organic waste ratio: various agricultural organic waste raw materials are mixed in a volume ratio of corn straw: decomposed cow dung: rice husk: slag = 20:30:30:20 to obtain a mixed matrix;

[0067] (3) Fermentation of organic waste: Determine the carbon-nitrogen ratio of the mixed matrix in step (2), add the fermentation raw materials and mix again, adjust the carbon-nitrogen ratio to 27:1, add microbial agents, add 60% water to adjust the moisture content to 30%, set the temperature in the aerobic fermentation equipment bin to 55°C, use 1m×0.5m woven bags in the aerobic fermentation equipment bin to bag the waste, randomly arrange the wastes, stack all the wastes together, chop them into a rectangular shape, cover them with plastic sheets, regularly add water for fermentation, turn the pile every 10 days, and measure the pile temperature every two days after fermentation until the temperature no longer changes. When the temperature no longer rises after turning the pile, the fermentation is over;

[0068] (4) Preparation of vegetable seedling medium: The organic waste decomposed material after fermentation in step (3) is mixed with the mixed medium in a weight ratio of 25:15, and after stirring evenly, an auxiliary substance is added, wherein the mass of the auxiliary substance is 0.3% of the total weight of the organic waste decomposed material and the mixed medium, and the vegetable seedling medium is obtained after mixing again.

[0069] Comparative Example 3

[0070] This comparative example provides a method for preparing a vegetable seedling substrate using organic materials as raw materials, comprising the following steps:

[0071] (1) Preparation of fermentation raw materials: Grinding and dehydrating kitchen waste to obtain fermentation raw materials, wherein the particle size of the fermentation raw materials is 3 cm;

[0072] (2) Organic waste ratio: various agricultural organic waste raw materials are mixed in a volume ratio of corn straw: decomposed cow dung: rice husk: slag = 20:30:30:20 to obtain a mixed matrix;

[0073] (3) Fermentation of organic waste: Determine the carbon-nitrogen ratio of the mixed matrix in step (2), add the fermentation raw materials and mix again, adjust the carbon-nitrogen ratio to 24:1, add microbial agents, add 60% water to adjust the moisture content to 30%, set the temperature in the aerobic fermentation equipment bin to 55°C, use 1m×0.5m woven bags in the aerobic fermentation equipment bin to bag the waste, randomly arrange the wastes, stack all the wastes together, chop them into a rectangular shape, cover them with plastic sheets, regularly add water for fermentation, turn the pile every 10 days, and measure the pile temperature every two days after fermentation until the temperature no longer changes. When the temperature no longer rises after turning the pile, the fermentation is over;

[0074] (4) Preparation of vegetable seedling medium: The organic waste decomposed material after fermentation in step (3) is mixed with the mixed medium in a weight ratio of 15:20, and after stirring evenly, an auxiliary substance is added, wherein the mass of the auxiliary substance is 0.3% of the total weight of the organic waste decomposed material and the mixed medium, and the vegetable seedling medium is obtained after mixing again.

[0075] The vegetable seedling substrate prepared in the above embodiments and comparative examples was used for tomato seedling cultivation. The humidity was controlled at 65% to 70%, the temperature was controlled at 28° C. during the day and 18° C. at night. The seedlings were cultivated for 21 days. The physiological growth indicators of the tomato seedlings are shown in Table 1.

[0076] Table 1

[0077] Test items Plant height(cm) Stem diameter (mm) Number of blades Plant fresh weight (g) Example 1 7.8 2.37 3.0 0.850 Example 2 7.0 2.31 3.0 0.839 Example 3 6.1 1.51 2.0 0.628 Example 4 5.3 1.42 2.0 0.506 Example 5 5.8 1.83 2.0 0.412 Comparative Example 1 4.8 1.79 2.0 0.349 Comparative Example 2 4.6 1.69 2.0 0.318 Comparative Example 3 4.4 1.51 2.0 0.217

[0078] It can be seen from the above table that the seedling matrix prepared according to the method of the present invention is more excellent in improving seedling efficiency and promoting plant growth. The carbon-nitrogen ratio and the weight ratio of organic waste compost to the mixed matrix will affect the performance of the seedling matrix.

[0079] In summary, the vegetable seedling matrix of the present invention provides a technical basis for the industrialization and industrialization of seedling cultivation; the organic material matrix prepared by the present invention has high nutrient content, stable properties and is helpful to improve the quality and increase the yield of crops; the vegetable seedling matrix of the present invention uses agricultural organic waste resources as raw materials for crop seedling matrix; this approach can not only alleviate the environmental pollution problem of agricultural organic waste, but also reduce the production cost of the seedling matrix, which has important theoretical significance and practical value for the ecological utilization of agricultural organic materials and promoting the sustainable development of the vegetable seedling industry; the vegetable seedling matrix of the present invention adopts recyclable organic waste and agricultural waste as raw materials, which can effectively reduce the use of peat and peat, and can also solve the problem of single utilization direction of back-end products of agricultural organic waste disposal.

[0080] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A method for preparing a vegetable seedling substrate using organic materials as raw materials, characterized in that: The steps include: (1) Preparation of fermentation raw materials: crushing and dehydrating kitchen waste to obtain fermentation raw materials; (2) Organic waste proportion: various agricultural organic waste raw materials are mixed according to proportion to obtain a mixed matrix; (3) Fermentation of organic waste: Determine the carbon-nitrogen ratio of the mixed matrix in step (2), add the fermentation raw materials and mix again, adjust the carbon-nitrogen ratio, add microbial agents, add water to adjust the moisture content, bag the waste in woven bags in an aerobic fermentation equipment bin, randomly arrange the waste, stack all the waste together, chop them into a rectangle, cover them with plastic sheets, regularly add water to ferment, turn the pile every 10 days, and measure the temperature of the pile every two days after fermentation until the temperature no longer changes. When the temperature no longer rises after turning the pile, the fermentation is terminated; (4) Preparation of vegetable seedling medium: The organic waste decomposed material after fermentation in step (3) is mixed with the mixed medium in proportion, stirred evenly, and then auxiliary substances are added, and the vegetable seedling medium is obtained after mixing again.

2. The method for preparing a vegetable seedling substrate using organic materials as raw materials as claimed in claim 1, characterized in that: In step (1), the particle size of the fermentation raw material is 2 to 4 cm.

3. The method for preparing a vegetable seedling substrate using organic materials as raw materials as claimed in claim 1, characterized in that: In step (2), the agricultural organic waste raw materials are mixed in a volume ratio of corn straw: decomposed cow dung: rice husk: slag = 20:30:30:

20.

4. The method for preparing a vegetable seedling substrate using organic materials as raw materials as claimed in claim 1, characterized in that: In step (3), the carbon-nitrogen ratio is adjusted to 24-26:

1.

5. The method for preparing a vegetable seedling substrate using organic materials as raw materials as claimed in claim 1, characterized in that: In step (3), 60% to 70% of water is added to adjust the moisture content to 10% to 50%; and the temperature in the aerobic fermentation equipment bin is set at 45°C to 60°C.

6. The method for preparing a vegetable seedling substrate using organic materials as raw materials as claimed in claim 1, characterized in that: In step (4), the fermented organic waste decomposed material and the mixed matrix are mixed in a weight ratio of 20-30:10-20; the mass of the auxiliary substance is 0.1%-0.5% of the total weight of the organic waste decomposed material and the mixed matrix.

7. The vegetable seedling growing matrix using organic materials as raw materials prepared by the method for preparing a vegetable seedling growing matrix using organic materials as raw materials as described in any one of claims 1 to 6.