A large-scale rice seedling raising medium

Abstract

The present invention provides a large-scale rice seedling cultivation matrix, and relates to the technical field of rice seedling cultivation. The large-scale rice seedling cultivation matrix of the present invention is composed of raw materials such as composite fermentation products, modified activated carbon, earthworm castings, vermiculite, etc. The seedling cultivation matrix of the present invention completely avoids the use of traditional nutrient soil, reduces dependence on soil resources and impact on the environment, improves the air permeability and water retention of the matrix, and provides a superior growth environment for rice seedlings. The matrix of the present invention helps to improve the yield (high emergence rate, strong seedlings, and well-developed root system) and disease resistance of rice seedlings, while shortening the seedling cultivation time, which is of great significance to modern agricultural production.

Description

Technical Field

[0001] The invention relates to the technical field of rice seedling cultivation, and in particular to a large-scale rice seedling cultivation matrix. Background Art

[0002] In modern agricultural production, the cultivation of rice seedlings is a key step in improving yield and quality. The traditional method of cultivating rice seedlings relies on nutrient soil as a matrix, but this method has certain disadvantages. First, the use of nutrient soil consumes a large amount of soil resources and puts pressure on the environment. Second, the microbial activity and nutritional components in the nutrient soil are difficult to control or unify, which in turn affects the growth quality and disease resistance of rice seedlings.

[0003] Therefore, how to obtain a rice large-scale seedling medium that can provide stable nutrients while having good air permeability and water retention to support the healthy growth of rice seedlings and reduce dependence on soil resources and reduce environmental impact is a technical problem that needs to be solved at present. Summary of the invention

[0004] The purpose of the invention is to provide a large-scale rice seedling raising substrate, which can completely avoid the use of nutrient soil and significantly increase the amount of vermiculite, thereby providing a superior growth environment for rice seedlings.

[0005] The large-scale rice seedling raising matrix of the present invention comprises the following raw materials in parts by weight:

[0006] 30-50 parts of composite fermentation product, 10-20 parts of modified activated carbon, 10-20 parts of earthworm castings, and 50-70 parts of vermiculite.

[0007] Furthermore, the matrix comprises the following raw materials in parts by weight:

[0008] 45 parts of composite fermentation product, 15 parts of modified activated carbon, 10 parts of earthworm castings and 65 parts of vermiculite.

[0009] Furthermore, the preparation method of the composite fermentation product is as follows:

[0010] The traditional Chinese medicine is pretreated and mixed evenly with bean dregs according to a certain proportion, and a composite fermentation agent is added and fermented to obtain the product.

[0011] Furthermore, the Chinese medicine pretreatment method is as follows:

[0012] The honeysuckle, phellodendron amurense and purslane are dried at low temperature and then crushed through a 80-120 mesh sieve. The obtained Chinese medicine powders are mixed in proportion and ultrasonically immersed in an organic acid solution. After the immersion is completed, they are washed with water until neutral and then dried to complete the pretreatment of the Chinese medicine.

[0013] Furthermore, the weight ratio of Phellodendron chinense, honeysuckle and purslane in the Chinese medicine powder is (1-5):(1-10):(1-6). Preferably, the weight ratio of Phellodendron chinense, honeysuckle and purslane in the Chinese medicine powder is 1:8:3.

[0014] Further, the organic acid is one or more of caffeic acid, citric acid, and salicylic acid, and the concentration of the organic acid solution is 0.1wt% to 30wt%. Preferably, the organic acid is citric acid. Preferably, the concentration of the organic acid solution is 3wt% to 15wt%, and further preferably, the concentration of the organic acid solution is 10wt%.

[0015] Furthermore, the ultrasonic immersion temperature is 40°C to 60°C, the ultrasonic power is 400 to 550W, and the ultrasonic immersion time is 0.5 to 3 hours. Preferably, the ultrasonic immersion temperature is 45°C, the ultrasonic power is 450W, and the ultrasonic immersion time is 1 hour.

[0016] Further, the weight ratio of the pretreated traditional Chinese medicine to the bean dregs is 1:(5-10). Preferably, the weight ratio of the pretreated traditional Chinese medicine to the bean dregs is 1:8.

[0017] Furthermore, the composite fermentation agent is composed of yeast, Bacillus subtilis, and lactic acid bacteria in a weight ratio of (1-2):(1-2):(1-2). Preferably, the composite fermentation agent is composed of yeast, Bacillus subtilis, and lactic acid bacteria in a weight ratio of 2:1:1.

[0018] Furthermore, the number of effective live bacteria in the composite fermentation bacterial agent is 200-500 million / g.

[0019] Furthermore, the fermentation temperature is 30°C to 35°C, and the fermentation time is 1 to 5 days. Preferably, the fermentation temperature is 35°C, and the fermentation time is 3 days.

[0020] Furthermore, the preparation method of the modified activated carbon is as follows:

[0021] The activated carbon and nitric acid solution are mixed in proportion and then impregnated once, washed with water until neutral and then dried, and then the dried activated carbon is mixed with a metal salt solution, the pH is adjusted to 10-12 with a sodium hydroxide solution, and then the temperature is increased for a second impregnation, washed with water until neutral and then dried to obtain modified activated carbon.

[0022] Furthermore, the concentration of the nitric acid solution is 1-5%. Furthermore, the concentration of the nitric acid solution is 3%.

[0023] Furthermore, the solid-liquid ratio of the activated carbon to the nitric acid solution is 1 g: (2-5) mL. Preferably, the solid-liquid ratio of the activated carbon to the nitric acid solution is 1 g: 5 mL.

[0024] Furthermore, the concentration of the metal salt solution is 15%, and the metal salt is composed of FeSO4 and FeCl3 in a weight ratio of 1:(2-2.5). Preferably, the metal salt is composed of FeSO4 and FeCl3 in a weight ratio of 1:2.

[0025] Further, the first immersion temperature is room temperature, the immersion time is 1 to 2 hours, the second immersion temperature is 60°C to 65°C, and the immersion time is 1 to 2 hours. Preferably, the first immersion time is 2 hours, the second immersion temperature is 65°C, and the immersion time is 1 hour.

[0026] Compared with the prior art, the beneficial technical effects of the present invention are:

[0027] The present invention avoids the use of traditional nutrient soil and significantly increases the proportion of vermiculite by using composite fermentation products and modified activated carbon, can reduce dependence on soil resources and impact on the environment, help improve the air permeability and water retention of the matrix, and provide a better growth environment for rice seedlings. The present invention has broad application prospects in agricultural production by optimizing the matrix components, improving the yield resistance and disease resistance of rice seedlings and appropriately shortening the seedling raising time. DETAILED DESCRIPTION

[0028] The technical solution provided by the present invention is further described below in conjunction with embodiments.

[0029] Example 1

[0030] A method for pretreatment of traditional Chinese medicine, comprising the following steps:

[0031] The honeysuckle, phellodendron and purslane were dried at 45°C respectively, crushed and sieved through a 120-mesh sieve, the obtained Chinese medicine powder was evenly mixed in a weight ratio of 1:8:3 among honeysuckle, phellodendron and purslane, and a 10wt% citric acid solution was added, and ultrasonically immersed for 1h at 45°C and 450w. After the immersion was completed, it was washed with water until neutral and then dried to complete the pretreatment of the Chinese medicine.

[0032] Example 2

[0033] A method for pretreatment of traditional Chinese medicine, comprising the following steps:

[0034] The honeysuckle, phellodendron and purslane were dried at 45°C respectively, crushed and sieved through a 120-mesh sieve, the obtained Chinese medicine powder was evenly mixed in a weight ratio of 1:1:1 among honeysuckle, phellodendron and purslane, and a 10wt% citric acid solution was added, and ultrasonically immersed for 1h at 45°C and 450w. After the immersion, the mixture was washed with water until neutral and then dried to complete the pretreatment of the Chinese medicine.

[0035] Example 3

[0036] A method for pretreatment of traditional Chinese medicine, comprising the following steps:

[0037] Dry honeysuckle, phellodendron amurense and purslane at 45°C respectively, grind and pass through a 120-mesh sieve, mix the obtained Chinese medicine powder in a weight ratio of 5:10:6 among honeysuckle, phellodendron amurense and purslane, add 10wt% citric acid solution, and ultrasonically immerse for 1h at 45°C and 450w. After immersion, wash with water until neutral and then dry to complete the pretreatment of the Chinese medicine.

[0038] Example 4

[0039] A method for pretreatment of traditional Chinese medicine, comprising the following steps:

[0040] Dry honeysuckle, phellodendron amurense and purslane at 45°C respectively, grind and pass through a 120-mesh sieve, mix the obtained Chinese medicine powder in a weight ratio of 1:8:3 among honeysuckle, phellodendron amurense and purslane, add 3wt% citric acid solution, and immerse in ultrasound at 45°C and 450w for 1h. After immersion, wash with water until neutral and then dry to complete the pretreatment of the Chinese medicine.

[0041] Example 5

[0042] A method for pretreatment of traditional Chinese medicine, comprising the following steps:

[0043] Dry honeysuckle, phellodendron amurense and purslane at 45°C respectively, grind and pass through a 120-mesh sieve, mix the obtained Chinese medicine powder in a weight ratio of 1:8:3 among honeysuckle, phellodendron amurense and purslane, add 15wt% citric acid solution, and ultrasonically immerse for 1h at 45°C and 450w. After immersion, wash with water until neutral and then dry to complete the pretreatment of the Chinese medicine.

[0044] Example 6

[0045] A method for pretreatment of traditional Chinese medicine, comprising the following steps:

[0046] The honeysuckle, phellodendron and purslane were dried at 45°C respectively, crushed and sieved through a 120-mesh sieve, the obtained Chinese medicine powder was evenly mixed in a weight ratio of 1:8:3 among honeysuckle, phellodendron and purslane, and a 10wt% caffeic acid solution was added, and ultrasonically immersed for 1h at 45°C and 450w. After the immersion was completed, it was washed with water until neutral and then dried to complete the pretreatment of the Chinese medicine.

[0047] Example 7

[0048] A method for pretreatment of traditional Chinese medicine, comprising the following steps:

[0049] The honeysuckle, phellodendron and purslane were dried at 45°C respectively, crushed and sieved through a 120-mesh sieve, the obtained Chinese medicine powder was evenly mixed in a weight ratio of 1:8:3 among honeysuckle, phellodendron and purslane, and a 10wt% salicylic acid solution was added, and ultrasonically immersed for 1h at 45°C and 450w. After the immersion was completed, it was washed with water until neutral and then dried to complete the pretreatment of the Chinese medicine.

[0050] Example 8

[0051] A method for pretreatment of traditional Chinese medicine, comprising the following steps:

[0052] Dry honeysuckle, phellodendron amurense and purslane at 45°C respectively, grind and pass through a 120-mesh sieve, mix the obtained Chinese medicine powder in a weight ratio of 1:8:3 among honeysuckle, phellodendron amurense and purslane, add 10wt% citric acid solution, and immerse in ultrasound at 40°C and 400w for 3h. After immersion, wash with water until neutral and then dry to complete the pretreatment of the Chinese medicine.

[0053] Example 9

[0054] A method for pretreatment of traditional Chinese medicine, comprising the following steps:

[0055] Dry honeysuckle, phellodendron amurense and purslane at 45°C respectively, grind and pass through a 120-mesh sieve, mix the obtained Chinese medicine powder in a weight ratio of 1:8:3 among honeysuckle, phellodendron amurense and purslane, add 10wt% citric acid solution, and ultrasonically immerse for 0.5h at 60°C and 550w. After immersion, wash with water until neutral and then dry to complete the pretreatment of the Chinese medicine.

[0056] Example 10

[0057] A method for preparing a composite fermentation product, comprising the following steps:

[0058] The pretreated Chinese medicine and bean dregs are mixed in a weight ratio of 1:8, a composite fermentation agent consisting of yeast, Bacillus subtilis, and lactic acid bacteria in a weight ratio of 2:1:1 (the effective number of live bacteria is 200 million / g) is added, and fermented at 35°C for 3 days to obtain a composite fermentation product;

[0059] The addition amount of the composite fermentation bacteria agent is 0.2wt% of the mixture of the traditional Chinese medicine and bean dregs.

[0060] Embodiment 11

[0061] A method for preparing a composite fermentation product, comprising the following steps:

[0062] The pretreated traditional Chinese medicine and bean dregs are mixed in a weight ratio of 1:5, a composite fermentation agent consisting of yeast, Bacillus subtilis, and lactic acid bacteria in a weight ratio of 2:1:1 (the effective number of live bacteria is 200 million / g) is added, and fermented at 35°C for 3 days to obtain a composite fermentation product;

[0063] The addition amount of the composite fermentation bacteria agent is 0.2wt% of the mixture of the traditional Chinese medicine and bean dregs.

[0064] Example 12

[0065] A method for preparing a composite fermentation product, comprising the following steps:

[0066] The pretreated traditional Chinese medicine and bean dregs are mixed in a weight ratio of 1:10, a composite fermentation agent consisting of yeast, Bacillus subtilis, and lactic acid bacteria in a weight ratio of 2:1:1 (the effective number of live bacteria is 200 million / g) is added, and fermented at 35° C. for 3 days to obtain a composite fermentation product;

[0067] The addition amount of the composite fermentation bacteria agent is 0.2wt% of the mixture of the traditional Chinese medicine and bean dregs.

[0068] Embodiment 13

[0069] A method for preparing a composite fermentation product, comprising the following steps:

[0070] The pretreated Chinese medicine and bean dregs are mixed in a weight ratio of 1:8, a composite fermentation agent consisting of yeast, Bacillus subtilis, and lactic acid bacteria in a weight ratio of 2:1:1 (the effective number of live bacteria is 200 million / g) is added, and fermented at 35°C for 5 days to obtain a composite fermentation product;

[0071] The addition amount of the composite fermentation bacteria agent is 0.2wt% of the mixture of the traditional Chinese medicine and bean dregs.

[0072] Embodiment 14

[0073] A modification method of activated carbon, the steps are as follows:

[0074] The activated carbon was mixed with a 3% nitric acid solution in a ratio of 1g:5mL and immersed at room temperature for 2h. The mixture was washed with water until neutral and dried at 100°C. The dried activated carbon was then mixed with a 15% FeSO4 and FeCl3 metal salt solution, wherein the weight ratio of FeSO4 to FeCl3 was 1:2. The pH was adjusted to 10 with a sodium hydroxide solution and then the temperature was raised to 65°C and immersed for 1h. The mixture was washed with water until neutral and dried at 100°C to obtain modified activated carbon.

[0075] Embodiment 15

[0076] A modification method of activated carbon, the steps are as follows:

[0077] The activated carbon was mixed with a 1% nitric acid solution in a ratio of 1g:5mL and immersed at room temperature for 2h. The mixture was washed with water until neutral and dried at 100°C. The dried activated carbon was then mixed with a 15% FeSO4 and FeCl3 metal salt solution, wherein the weight ratio of FeSO4 and FeCl3 was 1:2. The pH was adjusted to 10 with a sodium hydroxide solution and then the temperature was raised to 65°C and immersed for 1h. The mixture was washed with water until neutral and dried at 100°C to obtain modified activated carbon.

[0078] Example 16

[0079] A modification method of activated carbon, the steps are as follows:

[0080] The activated carbon was mixed with a 5% nitric acid solution in a ratio of 1g:5mL and immersed at room temperature for 2h. The mixture was washed with water until neutral and dried at 100°C. The dried activated carbon was then mixed with a 15% FeSO4 and FeCl3 metal salt solution, wherein the weight ratio of FeSO4 to FeCl3 was 1:2. The pH was adjusted to 10 with a sodium hydroxide solution and then the temperature was raised to 65°C and immersed for 1h. The mixture was washed with water until neutral and dried at 100°C to obtain modified activated carbon.

[0081] Embodiment 17

[0082] A modification method of activated carbon, the steps are as follows:

[0083] The activated carbon was mixed with a 3% nitric acid solution in a ratio of 1g:2mL and immersed at room temperature for 2h. The mixture was washed with water until neutral and dried at 100°C. The dried activated carbon was then mixed with a 15% FeSO4 and FeCl3 metal salt solution, wherein the weight ratio of FeSO4 and FeCl3 was 1:2. The pH was adjusted to 10 with a sodium hydroxide solution and then the temperature was raised to 65°C and immersed for 1h. The mixture was washed with water until neutral and dried at 100°C to obtain modified activated carbon.

[0084] Embodiment 18

[0085] A modification method of activated carbon, the steps are as follows:

[0086] The activated carbon was mixed with a 3% nitric acid solution in a ratio of 1g:5mL and immersed at room temperature for 2h. The mixture was washed with water until neutral and dried at 100°C. The dried activated carbon was then mixed with a 15% FeSO4 and FeCl3 metal salt solution, wherein the weight ratio of FeSO4 to FeCl3 was 1:2.5. The pH was adjusted to 10 with a sodium hydroxide solution and the temperature was raised to 65°C and immersed for 1h. The mixture was washed with water until neutral and dried at 100°C to obtain modified activated carbon.

[0087] Embodiment 19

[0088] A modification method of activated carbon, the steps are as follows:

[0089] The activated carbon was mixed with a 3% nitric acid solution in a ratio of 1g:5mL and immersed at room temperature for 1h. The mixture was washed with water until neutral and dried at 100°C. The dried activated carbon was then mixed with a 15% FeSO4 and FeCl3 metal salt solution, wherein the weight ratio of FeSO4 to FeCl3 was 1:2. The pH was adjusted to 10 with a sodium hydroxide solution and then the temperature was raised to 65°C and immersed for 1h. The mixture was washed with water until neutral and dried at 100°C to obtain modified activated carbon.

[0090] Embodiment 20

[0091] A modification method of activated carbon, the steps are as follows:

[0092] The activated carbon was mixed with a 3% nitric acid solution in a ratio of 1g:5mL and immersed at room temperature for 2h. The mixture was washed with water until neutral and dried at 100°C. The dried activated carbon was then mixed with a 15% FeSO4 and FeCl3 metal salt solution, wherein the weight ratio of FeSO4 to FeCl3 was 1:2. The pH was adjusted to 10 with a sodium hydroxide solution and then heated to 65°C and immersed for 2h. The mixture was washed with water until neutral and dried at 100°C to obtain modified activated carbon.

[0093] Embodiment 21

[0094] A modification method of activated carbon, the steps are as follows:

[0095] The activated carbon was mixed with a 3% nitric acid solution in a ratio of 1g:5mL and immersed at room temperature for 2h. The mixture was washed with water until neutral and dried at 100°C. The dried activated carbon was then mixed with a 15% FeSO4 and FeCl3 metal salt solution, wherein the weight ratio of FeSO4 to FeCl3 was 1:2. The pH was adjusted to 10 with a sodium hydroxide solution and then the temperature was raised to 60°C and immersed for 1h. The mixture was washed with water until neutral and dried at 100°C to obtain modified activated carbon.

[0096] Embodiment 22

[0097] A modification method of activated carbon, the steps are as follows:

[0098] The activated carbon was mixed with a 3% nitric acid solution in a ratio of 1g:5mL and immersed at room temperature for 2h. The mixture was washed with water until neutral and dried at 100°C. The dried activated carbon was then mixed with a 15% FeSO4 and FeCl3 metal salt solution, wherein the weight ratio of FeSO4 to FeCl3 was 1:2. The pH was adjusted to 12 with a sodium hydroxide solution and then heated to 65°C and immersed for 1h. The mixture was washed with water until neutral and dried at 100°C to obtain modified activated carbon.

[0099] Embodiment 23

[0100] A large-scale rice seedling raising matrix comprises the following raw materials in parts by weight:

[0101] 45 parts of composite fermentation product, 15 parts of modified activated carbon, 10 parts of earthworm castings, and 65 parts of vermiculite;

[0102] The composite fermentation product is the product of Example 1, and the modified activated carbon is the product of Example 13.

[0103] Embodiment 24

[0104] A large-scale rice seedling raising matrix comprises the following raw materials in parts by weight:

[0105] 30 parts of composite fermentation product, 10 parts of modified activated carbon, 10 parts of earthworm castings, and 50 parts of vermiculite;

[0106] The composite fermentation product is the product of Example 1, and the modified activated carbon is the product of Example 13.

[0107] Embodiment 25

[0108] A large-scale rice seedling raising matrix comprises the following raw materials in parts by weight:

[0109] 50 parts of composite fermentation product, 20 parts of modified activated carbon, 20 parts of earthworm castings, and 70 parts of vermiculite;

[0110] The composite fermentation product is the product of Example 1, and the modified activated carbon is the product of Example 13.

[0111] Comparative Example 1

[0112] Same as Example 23, except that the citric acid solution in Example 1 is replaced by a malic acid solution of equal concentration.

[0113] Comparative Example 2

[0114] Same as Example 23, except that the citric acid solution in Example 1 is replaced by an oxalic acid solution of equal concentration.

[0115] Comparative Example 3

[0116] Same as Example 23, except that the immersion condition is 45° C. for 1 h, and ultrasound is not used.

[0117] Comparative Example 4

[0118] Same as Example 23, except that the Chinese medicine raw material powder is replaced with honeysuckle, liquorice and scutellaria baicalensis in a weight ratio of 1:8:3.

[0119] Comparative Example 5

[0120] Same as Example 23, except that the nitric acid solution is replaced by a hydrochloric acid solution of equal concentration.

[0121] Comparative Example 6

[0122] Same as Example 23, except that: the activated carbon modification process is as follows: the activated carbon is mixed with a 3% nitric acid solution in a ratio of 1 g:5 mL, immersed at room temperature for 2 h, washed with water until neutral, and then dried at 100°C.

[0123] Comparative Example 7

[0124] The same as Example 22, except that: the activated carbon modification process is as follows: the activated carbon is mixed with a metal salt solution of FeSO4 and FeCl3 with a concentration of 15%, wherein the weight ratio of FeSO4 and FeCl3 is 1:2, the pH is adjusted to 10 with sodium hydroxide solution, the temperature is raised to 65°C and immersed for 1 hour, washed with water to neutrality and then dried at 100°C to obtain modified activated carbon.

[0125] Comparative Example 8

[0126] Same as Example 23, except that the metal salt solution is a CuSO4 solution with a concentration of 15%.

[0127] Comparative Example 9

[0128] Same as Example 23, except that no composite fermentation product is added.

[0129] Comparative Example 10

[0130] Same as Example 23, except that no modified activated carbon is added.

[0131] Test Example 1

[0132] The experiments were numbered, wherein Example 23 was designated as Treatment 1, and Comparative Examples 1 to 10 were designated as Treatments 2 to 11, respectively.

[0133] The same volume of materials from different treatments were evenly spread on trays of the same specifications. Each tray was sown with 100g of germinated rice seeds and covered with 0.5cm thick topsoil. The seedlings were raised in a greenhouse for 30 days. The 2.5-leaf stage was used as the standard. The occurrence of rice diseases was observed and recorded. After 30 days, 30 seedlings from each treatment were taken to measure the growth status of the rice seedlings.

[0134] The original data of each stage were collected and significance analysis was performed using IBM SPSS Statistics 26. The test results are shown in Table 1.

[0135]

[0136]

[0137] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A rice large-scale seedling raising matrix, characterized in that: The invention comprises the following raw materials in parts by weight: 30-50 parts of composite fermentation product, 10-20 parts of modified activated carbon, 10-20 parts of earthworm castings, 50-70 parts of vermiculite; The preparation method of the composite fermentation product is as follows: The Chinese medicine is pretreated and mixed evenly with bean dregs according to a certain proportion, and a composite fermentation agent is added and fermented to obtain the product; The composite fermentation agent is composed of yeast, Bacillus subtilis, and lactic acid bacteria in a weight ratio of (1-2):(1-2):(1-2); The Chinese medicine pretreatment method is as follows: The honeysuckle, phellodendron, and purslane are dried at low temperature and then crushed through a 80-120 mesh sieve, the obtained Chinese medicine powders are mixed in proportion and ultrasonically impregnated in a 10wt% citric acid solution, and after the impregnation is completed, they are washed with water until neutral and then dried, thus completing the pretreatment of the Chinese medicine; The preparation method of the modified activated carbon is as follows: The activated carbon and nitric acid solution are mixed in proportion and then impregnated once, washed with water until neutral and then dried, then the dried activated carbon is mixed with a metal salt solution, the pH is adjusted to 10-12 with a sodium hydroxide solution, and then the temperature is increased for a second impregnation, washed with water until neutral and then dried to obtain modified activated carbon; The concentration of the metal salt solution is 15%, and the metal salt is composed of FeSO4 and FeCl3 in a weight ratio of 1: (2-2.5); The weight ratio of the pretreated traditional Chinese medicine to the bean dregs is 1:(5-10).

2. A rice large-scale seedling raising matrix according to claim 1, characterized in that: The fermentation temperature is 30°C to 35°C, and the fermentation time is 1 to 5 days.

3. A rice large-scale seedling raising matrix according to claim 1, characterized in that: The solid-liquid ratio of the activated carbon to the nitric acid solution is 1 g: (2-5) mL.

4. A rice large-scale seedling raising matrix according to claim 1, characterized in that: The primary immersion temperature is room temperature, and the immersion time is 1 to 2 hours. The secondary immersion temperature is 60° C. to 65° C., and the immersion time is 1 to 2 hours.

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