Charcoal energy efficiency organic fertilizer and preparation method thereof

Abstract

The invention provides a biochar energy-efficiency organic fertilizer and a preparation method thereof. Every 100 kg of the biochar energy-efficiency organic fertilizer is prepared from the following raw materials: 15-16.6 kg of dry mushroom dregs, 15-16.4 kg of dry Chinese herbal medicine residues, 5-7.6 kg of dry straw, 40.8-50 kg of dry manure powder, 5-6.9 kg of ground phosphate rock, 5-6.6 kg of potassium mineral powder, 4.5-4.9 kg of yeast waste dry powder, and the balance of organic fertilizer zymophyte powder, urea and calcium powder. The fertilizer has the advantages that 1, the fertilizer efficiency of the organic fertilizer can be prolonged and is more stable, the fertilizer is comprehensive in nutrition, the seedling burning phenomenon is avoided, the maturity of vegetables and fruits is promoted, the yield is increased, and the taste is improved; 2, common raw materials are used as organic element sources, so that soil microorganisms can be cultured to grow, the soil structure can be improved, the problem of soil hardening can be solved, and the later-stage fertilization dosage can be reduced; 3, in the content of nutrients required by plants generated by conversion, the proportion of carbon, hydrogen and oxygen is about 95%, the proportion of nitrogen, phosphorus and potassium is about 4.5%, the proportion of calcium, sulfur, magnesium, iron, copper, zinc and boron is about 0.5%, and the content of carbon is about 45%, so that the efficiency of the organic fertilizer can be ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of biomass fertilizers, and in particular relates to a biochar energy-efficient organic fertilizer and a preparation method thereof. Background Art

[0002] Fertilizers are an important source of nutrients for plant growth. They mainly contain key elements such as nitrogen, phosphorus, and potassium. They are intended to replenish nutrients lost from the soil and thus increase crop yields. However, with the excessive and single use of chemical fertilizers, the soil environment is facing severe challenges. In the absence of organic matter, the aggregate structure of the soil is difficult to maintain, resulting in a decrease in the adhesion between soil particles, which in turn weakens the soil's ability to retain water.

[0003] When the soil cannot maintain suitable moisture, even if the quality of the fertilizer is high, the release of its nutrients will be adversely affected. Secondly, in order to deal with the problems caused by the long-term use of a single fertilizer, organic fertilizer has emerged as a solution on the market. Organic fertilizer not only contains the macro-elements and trace elements necessary for plants, but is also rich in organic nutrients. It is undoubtedly a comprehensive and efficient fertilizer choice. However, although organic fertilizer has a high nutrient content, it still has the characteristics of low efficiency, slow effect and short effect. Therefore, it is necessary to further optimize the formula and process of organic fertilizer to reduce costs and improve fertilizer efficiency. Summary of the invention

[0004] The purpose of the present invention is to provide a biochar energy-efficient organic fertilizer and a preparation method thereof, which can improve the soil environment, regulate the soil pH, and provide more suitable conditions for the growth of crops.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a biochar energy-efficient organic fertilizer, wherein every 100 kg of the biochar energy-efficient organic fertilizer is made of the following raw materials: 15-16.6 kg of dry fungus residue, 15-16.4 kg of dry Chinese herbal medicine residue, 5-7.6 kg of dry straw, 40.8-50 kg of dry manure powder, 5-6.9 kg of phosphate rock powder, 5-6.6 kg of potassium rock powder, 4.5-4.9 kg of yeast waste dry powder, and the remainder is organic fertilizer fermentation bacteria powder, urea and calcium powder.

[0006] Furthermore, every 100 kg of the biochar energy-efficient organic fertilizer is made from the following raw materials: 16.6 kg of dry fungus residue, 16.4 kg of dry Chinese herbal medicine residue, 7.6 kg of dry straw, 40.8 kg of dry manure powder, 6.9 kg of phosphate rock powder, 6.6 kg of potassium rock powder, 4.7 kg of yeast waste dry powder, and the remainder is organic fertilizer fermentation powder, urea and calcium powder.

[0007] Furthermore, every 100 kg of the biochar energy-efficient organic fertilizer is made from the following raw materials: 15.8 kg of dry fungus residue, 15.9 kg of dry Chinese herbal medicine residue, 6.5 kg of dry straw, 44.9 kg of dry manure powder, 6.2 kg of phosphate rock powder, 5.9 kg of potassium rock powder, 4.5 kg of yeast waste dry powder, and the remainder is organic fertilizer fermentation powder, urea and calcium powder.

[0008] Furthermore, every 100 kg of the biochar energy-efficient organic fertilizer is made from the following raw materials: 15 kg of dry fungus residue, 15 kg of dry Chinese herbal medicine residue, 5 kg of dry straw, 50 kg of dry manure powder, 5 kg of phosphate rock powder, 5 kg of potassium rock powder, 4.9 kg of yeast waste dry powder, and the remainder is organic fertilizer fermentation powder, urea and calcium powder.

[0009] Furthermore, the dry Chinese herbal medicine residue is made from at least one of the discarded residues of Astragalus, discarded residues of Angelica, discarded residues of Codonopsis, discarded residues of Isatis, discarded residues of Folium Isatidis, discarded residues of Houttuynia and discarded residues of Forsythia.

[0010] Furthermore, the dried orange straw is made of at least one of wheat straw, rice straw, corn straw, rape straw, peanut straw, and broad bean straw.

[0011] Furthermore, the dry manure powder is made of at least one of chicken manure powder, cow dung powder and sheep dung powder.

[0012] Furthermore, the yeast waste dry powder is prepared from waste left after yeast is prepared using at least one of malt, corn, soy protein and wheat syrup as raw materials.

[0013] Furthermore, the dry mushroom residue is obtained from waste after preparing mushroom powder with edible mushrooms as the main ingredient.

[0014] The present invention also provides a method for preparing the above-mentioned biochar energy-efficient organic fertilizer, comprising the following steps:

[0015] S1. Pyrolyze dried fungus residue, dried Chinese herbal medicine residue and dried straw at 500°C to 700°C under oxygen-limited conditions, and crush, ultrafinely grind, sieve, ultrasonicate and dry the pyrolysis products in sequence to obtain micro-nano biochar powder;

[0016] S2, drying, grinding and sieving the animal feces in sequence to obtain dry feces powder;

[0017] S3, drying, grinding and sieving the yeast waste in sequence to obtain dry yeast waste powder;

[0018] S4, mixing the micro-nano biochar preparation, dry feces powder, phosphate rock powder, potash rock powder, yeast waste dry powder, organic fertilizer fermentation bacteria powder, urea and calcium powder to obtain a mixture;

[0019] S5, putting the mixture into a pile or stack in the fermentation area, measuring the internal temperature of the mixture after standing for 10 days, and turning the mixture with a forklift or a compost turner when the temperature reaches 65-70°C, stirring and aerating the mixture, and controlling the humidity of the mixture between 65% and 70% during the turning and stacking to obtain a primary fermentation product;

[0020] S6, crushing the primary fermentation product and then letting it stand for 15-20 days to perform secondary fermentation, so that the internal temperature of the primary fermentation product drops to room temperature, thereby obtaining a secondary fermentation product;

[0021] S7. Grind the secondary fermentation product into powder to obtain biochar energy-efficient organic fertilizer.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention can prolong and stabilize the fertilizer effect of organic fertilizer through the combined action of different ingredients. The fertilizer is comprehensive in nutrition and will not burn seedlings. It helps to promote the maturity of vegetables and fruits, increase yield, and improve taste.

[0024] 2. The present invention is different from chemical fertilizers. It uses common raw materials as the source of organic elements, which can not only cultivate the growth of soil microorganisms, but also improve the soil structure, solve the problem of soil compaction, and reduce the amount of fertilizer used in the later stage.

[0025] 3. Among the nutrients required for plants produced by the transformation of the present invention, carbon, hydrogen and oxygen account for about 95%, nitrogen, phosphorus and potassium account for about 4.5%, calcium, sulfur, magnesium, iron, copper, zinc and boron account for about 0.5%, and the carbon content accounts for about 45%, which can ensure the effectiveness of organic fertilizer. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The figure is a growth comparison diagram of Kronen grape (the left figure is the organic fertilizer of Example 1, and the right figure is the chemical fertilizer);

[0027] Figure 2 The figure is a growth comparison diagram of red kiwifruit (the left figure shows the application of organic fertilizer of Example 1, and the right figure shows the application of chemical fertilizer);

[0028] Figure 3 This is a growth comparison diagram of cucumber (the left figure shows the application of the organic fertilizer of Example 2 for 7 days, and the right figure shows the application of chemical fertilizer for 7 days);

[0029] Figure 4 The growth comparison diagram of cucumber (the left diagram shows the application of organic fertilizer of Example 2 for 26 days, and the right diagram shows the application of chemical fertilizer for 26 days);

[0030] Figure 5 The figure is a growth comparison diagram of white radish (using the organic fertilizer of Example 2 of the present invention);

[0031] Figure 6The growth comparison diagram of lettuce (the left diagram shows the application of organic fertilizer of Example 2 for 32 days, and the right diagram shows the application of chemical fertilizer for 32 days);

[0032] Figure 7 The growth comparison diagram of Chinese cabbage (the left diagram shows the application of organic fertilizer of Example 2 for 10 days, and the right diagram shows the application of chemical fertilizer for 10 days);

[0033] Figure 8 The growth comparison diagram of tomatoes (the left diagram shows the application of Example 3 for 18 days, and the right diagram shows the application of chemical fertilizer for 18 days);

[0034] Fig. 9 The growth comparison diagram of rapeseed (the left diagram shows the application of Example 3 for 20 days, and the right diagram shows the application of chemical fertilizer for 20 days);

[0035] Fig.10 It is the test report information page of the organic fertilizer of Example 1;

[0036] Fig.11 This is the test report result page of the organic fertilizer of Example 1. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention are described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Embodiment 1

[0039] This embodiment discloses a biochar energy-efficient organic fertilizer, wherein 100 kg of biochar energy-efficient organic fertilizer is made of the following raw materials: 35 kg of micro-nano biochar preparation, 50 kg of dry feces powder, 5 kg of phosphate rock powder, 5 kg of potash rock powder, 4.9 kg of yeast waste dry powder, and the remainder is organic fertilizer fermentation bacterial powder, urea and calcium powder. Among them, the micro-nano biochar preparation is composed of 15 kg of dry bacterial residue, 15 kg of dry Chinese herbal medicine residue, and 5 kg of dry straw.

[0040] The dry mushroom powder is composed of the following raw materials in percentage by weight: 60% of enoki mushroom powder, 30% of shiitake mushroom powder and 10% of other mushroom powders.

[0041] The dry manure powder is composed of the following raw materials in percentage by weight: 50% of laying hen manure powder, 30% of sheep manure powder and 20% of cow manure powder.

[0042] The dry Chinese herbal medicine residue is composed of the following raw materials in percentage by weight: 14% of astragalus waste residue, 14% of angelica waste residue, 12% of codonopsis waste residue, 16% of isatis root waste residue, 18% of isatis indigotica waste residue, 14% of houttuynia cordata waste residue and 12% of forsythia waste residue.

[0043] The dried orange straw is composed of the following raw materials in the following weight percentages: 15% of wheat straw, 19% of rice straw, 17% of corn straw, 13% of rape straw, 21% of peanut straw and 15% of broad bean straw.

[0044] The yeast waste dry powder is composed of the following raw materials in percentage by weight: 28% of malt yeast waste, 24% of corn yeast waste, 25% of soy protein yeast waste, and 23% of wheat syrup yeast waste.

[0045] The dry fungus residue contains 500 million / g of phosphorus bacteria, 480 million / g of yeast, 400 million / g of Bacillus subtilis, 400 million / g of licheniformis, and 350 million / g of nitrogen-fixing bacteria. The dry Chinese herbal medicine residue powder contains 300 million / g of nitrogen-fixing bacteria, 280 million / g of phosphate-dissolving bacteria, and 210 million / g of potassium-dissolving bacteria.

[0046] The biochar energy-efficient organic fertilizer in this embodiment is used for fruit crop cultivation, and compared with the same variety of fruit crops using chemical fertilizers with equivalent costs, the yield is significantly improved.

[0047] like Figure 1 As shown, the Karenson grapes planted in Xichang City, Sichuan Province were fertilized in April 2023 and the fruits were picked on September 22, 2023. The yield of Karenson grapes applied with the biochar energy-efficient organic fertilizer in this embodiment increased by 500 kg per mu, and the appearance, sweetness and crispness were significantly better than those of chemical fertilizers with equivalent application costs.

[0048] The red kiwifruit planted in Cangxi County, Guangyuan City, has increased its yield by 250 kg per mu and matured 10-15 days earlier on average. The fruit has shiny green leaves, plump berries, smooth surface, and its sugar content has increased by 38%.

[0049] like Figure 2 As shown, Hongyang kiwifruit was planted in Pujiang, Chengdu, Sichuan. It was harvested in early December 2023. The yield per mu of the biochar energy-efficient organic fertilizer in this embodiment increased by 750 kg, and the sugar content reached 25.7%, indicating that the yield and quality were significantly better than the chemical fertilizer with the same application cost.

[0050] In addition, if Fig.10 , 11 As shown in the table below, the composition of the biochar energy-efficient organic fertilizer in this embodiment is compliant, and the soil quality is significantly improved before and after the use of the biochar energy-efficient organic fertilizer in this embodiment.

[0051]

[0052] Embodiment 2

[0053] This embodiment discloses a biochar energy-efficient organic fertilizer, wherein 100 kg of the biochar energy-efficient organic fertilizer is made of the following raw materials: 40.6 kg of micro-nano biochar preparation, 40.8 kg of dry feces powder, 6.9 kg of phosphate rock powder, 6.6 kg of potash rock powder, 4.7 kg of yeast waste dry powder, and the remainder is organic fertilizer fermentation bacteria powder, urea and calcium powder. Among them, the micro-nano biochar preparation is composed of 16.6 kg of dry bacteria residue, 16.4 kg of dry Chinese herbal medicine residue, and 7.6 kg of dry straw.

[0054] The dry mushroom powder is composed of the following raw materials in weight percentage: 58% of enoki mushroom powder, 34% of shiitake mushroom powder, and 8% of other mushroom powders. The dry manure powder is composed of the following raw materials in weight percentage: 58% of laying hen manure powder and 42% of sheep manure powder.

[0055] The dry Chinese herbal medicine residue is composed of the following raw materials in percentage by weight: 18% of astragalus waste residue, 13% of angelica waste residue, 18% of codonopsis waste residue, 19% of isatis root waste residue, 15% of isatis indigotica waste residue and 17% of forsythia waste residue.

[0056] The dried orange straw is composed of the following raw materials in the following weight percentages: 26% of wheat straw, 13% of rice straw, 22% of corn straw, 13% of peanut straw and 26% of broad bean straw.

[0057] The yeast waste dry powder is composed of the following raw materials in percentage by weight: 29% of malt yeast waste, 30% of corn yeast waste, 22% of soy protein yeast waste, and 19% of wheat syrup yeast waste.

[0058] The dry bacterial residue contains 560 million / g of phosphorus bacteria, 460 million / g of yeast, 360 million / g of Bacillus subtilis, 380 million / g of lichen spores, and 340 million / g of nitrogen-fixing bacteria. The dry Chinese herbal medicine residue powder contains 380 million / g of nitrogen-fixing bacteria, 360 million / g of phosphate-dissolving bacteria, and 290 million / g of potassium-dissolving bacteria. The biochar energy-efficient organic fertilizer in this embodiment is used for vegetable crop cultivation, and compared with the same variety of vegetable crops using chemical fertilizers with equivalent use costs, the yield is significantly improved.

[0059] The results of the trial planting of cucumbers in Honghe Hani and Yi Autonomous Prefecture, Yunnan Province showed that the yield of cucumbers per mu after applying traditional chemical fertilizers was 6,800 kg, while the yield of cucumbers per mu after applying the biochar energy-efficient organic fertilizer in this embodiment was 7,600 kg, an increase of 800 kg per mu, and an average early maturity of 5-10 days. Figure 3 and 4 As shown, the growth conditions of cucumbers on the 7th and 26th days after fertilization were compared. It can be seen that after applying the biochar energy-efficient organic fertilizer in this embodiment, the cucumber leaves are green and shiny, the surface is smooth, and the roots are stronger.

[0060] like Figure 5As shown in the figure, the radishes planted in Chongzhou City, Sichuan Province weigh 2.0-3.0 kg and taste sweet and juicy, while the radishes grown with chemical fertilizers of similar cost only weigh 0.5-0.8 kg.

[0061] like Figure 6 As shown in the figure, the growth of lettuce planted in the Pidu branch of the World Horticultural Exposition Park in Pidu District, Sichuan Province was significantly better after fertilization for 32 days with biochar energy-efficient organic fertilizer than with chemical fertilizer of similar application cost.

[0062] like Figure 7 As shown, the pakchoi planted in Huangshan, Anhui Province. It was sown and fertilized at the end of August 2023. Ten days after fertilization, the growth of biochar energy-efficient organic fertilizer was significantly better than that of chemical fertilizer with equivalent application cost.

[0063] In addition, as shown in the table below, the soil quality was significantly improved before and after the use of the biochar energy-efficient organic fertilizer in this embodiment.

[0064]

[0065]

[0066] Embodiment 3

[0067] This embodiment discloses a biochar energy-efficient organic fertilizer, wherein 100 kg of biochar energy-efficient organic fertilizer is made from the following raw materials: 38.2 kg of micro-nano biochar preparation, 44.9 kg of dry feces powder, 6.2 kg of phosphate rock powder, 5.9 kg of potash rock powder, 4.5 kg of yeast waste dry powder, and the remainder is organic fertilizer fermentation bacterial powder, urea and calcium powder. Among them, the micro-nano biochar preparation is composed of 15.8 kg of dry bacterial residue, 15.9 kg of dry Chinese herbal medicine residue, and 6.5 kg of dry straw.

[0068] The dry mushroom powder is composed of the following raw materials in weight percentage: 55% of enoki mushroom powder, 32% of shiitake mushroom powder, and 13% of other mushroom powders. The dry dung powder is composed of the following raw materials in weight percentage: 60% of sheep dung powder and 40% of cow dung powder.

[0069] The dry Chinese herbal medicine residue is composed of the following raw materials in percentage by weight: 22% of astragalus waste residue, 14% of codonopsis waste residue, 20% of isatis waste residue, 11% of isatis waste residue, 17% of houttuynia waste residue and 16% of forsythia waste residue.

[0070] The dried orange straw is composed of the following raw materials in percentage by weight: 18% of wheat straw, 24% of rice straw, 21% of corn straw, 23% of rape straw and 14% of peanut straw.

[0071] The yeast waste dry powder is composed of the following raw materials in percentage by weight: 33% of malt yeast waste, 32% of corn yeast waste, and 35% of soy protein yeast waste.

[0072] The dry fungus residue contains 520 million / g of phosphorus bacteria, 460 million / g of yeast, 350 million / g of Bacillus subtilis, 420 million / g of licheniformis, and 330 million / g of nitrogen-fixing bacteria. The dry Chinese herbal medicine residue powder contains 360 million / g of nitrogen-fixing bacteria, 350 million / g of phosphate-dissolving bacteria, and 260 million / g of potassium-dissolving bacteria.

[0073] like Figure 8 As shown, tomatoes were planted in Honghe Prefecture, Yunnan Province. They were sown and fertilized at the end of December 2023. 18 days after fertilization, the growth of biochar energy-efficient organic fertilizer was significantly better than that of chemical fertilizers with equivalent application costs.

[0074] like Fig. 9 As shown, rapeseed was planted in Chuxiong Yi Autonomous Prefecture, Yunnan Province. It was sown and fertilized on February 22, 2024. After 20 days of fertilization, the growth of biochar energy-efficient organic fertilizer was significantly better than that of chemical fertilizer with equivalent application cost.

[0075] In addition, as shown in the table below, the soil quality was significantly improved before and after the use of the biochar energy-efficient organic fertilizer in this embodiment.

[0076]

[0077]

[0078] Embodiment 4

[0079] This embodiment also discloses a method for preparing the above-mentioned biochar energy-efficient organic fertilizer, comprising the following steps:

[0080] S1. Dry fungus residue, dry Chinese herbal medicine residue and dry straw are pyrolyzed at 500-700°C under oxygen-limited conditions, and the pyrolysis products are crushed, ultrafinely ground, sieved, ultrasonicated and dried in sequence to obtain micro-nano biochar powder.

[0081] S2. Drying, grinding and sieving the animal feces in sequence to obtain dry feces powder.

[0082] S3, drying, grinding, and passing the yeast waste through a 60-mesh sieve in sequence to obtain dry yeast waste powder.

[0083] S4, mixing the micro-nano biochar preparation, dry manure powder, phosphate rock powder, potash rock powder, yeast waste dry powder, organic fertilizer fermentation bacteria powder, urea and calcium powder to obtain a mixture.

[0084] S5. Place the mixture into a pile or stack in the fermentation area, measure the internal temperature of the mixture after standing for 10 days, and use a forklift or a compost turner to turn the pile, stir and aerate when the temperature reaches 65-70°C. During the turning and piling, control the humidity of the mixture to be ≥65% to obtain a primary fermentation product.

[0085] S6. After the primary fermentation product is crushed, it is allowed to stand for 15-20 days and then subjected to secondary fermentation, so that the internal temperature of the primary fermentation product drops to room temperature, thereby obtaining a secondary fermentation product.

[0086] S7. Grind the secondary fermentation product into powder to obtain biochar energy-efficient organic fertilizer.

[0087] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

[0088] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified and replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A biochar energy-efficient organic fertilizer, characterized in that: Every 100kg of the biochar energy-efficient organic fertilizer is made of the following raw materials: 15-16.6kg of dry fungus residue, 15-16.4kg of dry Chinese herbal medicine residue, 5-7.6kg of dry straw, 40.8-50kg of dry manure powder, 5-6.9kg of phosphate rock powder, 5-6.6kg of potassium rock powder, 4.5-4.9kg of yeast waste dry powder, and the rest is organic fertilizer fermentation powder, urea and calcium powder.

2. A biochar energy-efficient organic fertilizer according to claim 1, characterized in that: Every 100kg of biochar energy-efficient organic fertilizer is made from the following raw materials: 16.6kg of dry fungus residue, 16.4kg of dry Chinese herbal medicine residue, 7.6kg of dry straw, 40.8kg of dry manure powder, 6.9kg of phosphate rock powder, 6.6kg of potassium rock powder, 4.7kg of yeast waste dry powder, and the rest is organic fertilizer fermentation powder, urea and calcium powder.

3. A biochar energy-efficient organic fertilizer according to claim 2, characterized in that: Every 100 kg of the biochar energy-efficient organic fertilizer is made of the following raw materials: 15.8 kg of dry fungus residue, 15.9 kg of dry Chinese herbal medicine residue, 6.5 kg of dry straw, 44.9 kg of dry manure powder, 6.2 kg of phosphate rock powder, 5.9 kg of potassium rock powder, 4.5 kg of yeast waste dry powder, and the remainder is organic fertilizer fermentation powder, urea and calcium powder.

4. A biochar energy-efficient organic fertilizer according to claim 3, characterized in that: Every 100kg of the biochar energy-efficient organic fertilizer is made of the following raw materials: 15kg of dry fungus residue, 15kg of dry Chinese herbal medicine residue, 5kg of dry straw, 50kg of dry manure powder, 5kg of phosphate rock powder, 5kg of potassium rock powder, 4.9kg of yeast waste dry powder, and the remainder is organic fertilizer fermentation powder, urea and calcium powder.

5. A biochar energy-efficient organic fertilizer according to claim 4, characterized in that: The dry Chinese herbal medicine residue is made from at least one of the discarded astragalus residue, the discarded angelica residue, the discarded codonopsis residue, the discarded isatis root residue, the discarded isatis leaf residue, the discarded houttuynia cordata residue and the discarded forsythia residue.

6. A biochar energy-efficient organic fertilizer according to claim 5, characterized in that: The dried orange straw is made of at least one of wheat straw, rice straw, corn straw, rape straw, peanut straw and broad bean straw.

7. A biochar energy-efficient organic fertilizer according to claim 6, characterized in that: The dry dung powder is made of at least one of chicken dung powder, cow dung powder and sheep dung powder.

8. A biochar energy-efficient organic fertilizer according to claim 7, characterized in that: The yeast waste dry powder is prepared from waste after yeast is prepared using at least one of malt, corn, soybean protein and wheat syrup as raw materials.

9. A biochar energy-efficient organic fertilizer according to claim 7, characterized in that: The dry mushroom residue is obtained from waste after mushroom powder is prepared using edible mushrooms as the main ingredient.

10. A method for preparing the biochar energy-efficient organic fertilizer according to claim 1, characterized in that: The steps include: S1. Pyrolyze dried fungus residue, dried Chinese herbal medicine residue and dried straw at 500°C to 700°C under oxygen-limited conditions, and crush, ultrafinely grind, sieve, ultrasonicate and dry the pyrolysis products in sequence to obtain micro-nano biochar powder; S2, drying, grinding and sieving the animal feces in sequence to obtain dry feces powder; S3, drying, grinding and sieving the yeast waste in sequence to obtain dry yeast waste powder; S4, mixing the micro-nano biochar preparation, dry feces powder, phosphate rock powder, potash rock powder, yeast waste dry powder, organic fertilizer fermentation bacteria powder, urea and calcium powder to obtain a mixture; S5, putting the mixture into a pile or stack in the fermentation area, measuring the internal temperature of the mixture after standing for 10 days, and turning the pile with a forklift or a pile turner when the temperature reaches 65-70°C, stirring and aerating the mixture, and controlling the humidity of the mixture between 65% and 70% during the turning and stacking to obtain a primary fermentation product; S6, crushing the primary fermentation product and then letting it stand for 15-20 days to perform secondary fermentation, so that the internal temperature of the primary fermentation product drops to room temperature, thereby obtaining a secondary fermentation product; S7. Grind the secondary fermentation product into powder to obtain biochar energy-efficient organic fertilizer.

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