阅读说明：本技术 一种红霉素菌渣制备的有机肥料及其制备方法 (Organic fertilizer prepared from erythromycin mushroom residue and preparation method thereof ) 是由 李志杰 邓留杰 董丽萍 韩丽丽 热沙来提 张广立 于 2021-08-16 设计创作，主要内容包括：本发明属于有机肥料技术领域,具体涉及一种红霉素菌渣制备的有机肥料及其制备方法。本发明的有机肥料是将原料堆肥发酵后制成,所述原料包括如下重量份的组分：红霉素菌渣30～70份；农作物废弃物5～35份；粪便5～35份。腐熟完成后的有机肥料中有机质含量大于70％,氮磷钾含量总和大于6.2％,且各元素含量比例、pH和导电率合理,堆肥后经盆栽验证,在施肥量2％以内的实施例中,对玉米的发芽和生长有显著的促进作用。本发明对红霉素菌渣进行了安全的资源化利用,经济效益高,长期使用对土壤的改变和破坏小,具有很好的应用前景。(The invention belongs to the technical field of organic fertilizers, and particularly relates to an organic fertilizer prepared from erythromycin mushroom dregs and a preparation method thereof. The organic fertilizer is prepared by fermenting raw materials through composting, wherein the raw materials comprise the following components in parts by weight: 30-70 parts of erythrocin bacterial residues; 5-35 parts of crop wastes; 5-35 parts of excrement. The organic matter content of the decomposed organic fertilizer is more than 70%, the total content of nitrogen, phosphorus and potassium is more than 6.2%, the content proportion of each element, the pH value and the electric conductivity are reasonable, and potted plant verification shows that the organic fertilizer has a remarkable promotion effect on the germination and growth of corns in the embodiment in which the fertilizing amount is within 2%. The invention carries out safe resource utilization on the erythrocin fungi residues, has high economic benefit, has little change and damage to soil after long-term use, and has good application prospect.)

1. The organic fertilizer is characterized by being prepared by fermenting raw materials through composting, wherein the raw materials comprise the following components in parts by weight:

30-70 parts of erythrocin bacterial residues;

5-35 parts of crop wastes;

5-35 parts of excrement.

2. The organic fertilizer as claimed in claim 1, wherein said raw materials comprise the following components in parts by weight:

30 parts of erythrocin bacterial residues;

35 parts of crop waste;

35 parts of excrement.

3. An organic fertilizer according to claim 1, characterized in that: the crop waste is selected from at least one of straw, rice chaff or bran, and is preferably straw; the straw is selected from at least one of corn straw, wheat straw, soybean straw or rice straw;

and/or the manure is at least one of cow manure, pig manure, sheep manure or chicken manure.

4. An organic fertilizer according to any one of claims 1 to 3, characterized in that it has the following criteria:

the organic matter content is 76.30-85.89 wt.%;

3.46-5.06 wt.% of total nitrogen content;

total phosphorus content in P₂O₅1.63-1.68 wt.%;

the total potassium content is expressed as K₂0.91-1.69 wt.% on O basis;

the pH value is 7.81-7.89.

5. The organic fertilizer according to claim 4, characterized in that said organic fertilizer has the following criteria:

organic content 85.89 wt.%;

total nitrogen content 5.06 wt.%;

total phosphorus content in P₂O₅1.68 wt.%;

the total potassium content is expressed as K₂0.91 wt.% O;

the pH was 7.89;

and/or the organic fertilizer has the following indexes:

organic content 76.30 wt.%;

total nitrogen content 3.46 wt.%;

total phosphorus content in P₂O₅1.63 wt.%;

the total potassium content is expressed as K₂1.69 wt.% O;

the pH was 7.81.

6. The process for the preparation of an organic fertilizer according to any one of claims 1 to 5, characterized in that it comprises the following steps:

(1) mixing the raw materials, and adding a zymophyte agent; the raw materials comprise erythromycin mushroom dregs, crop wastes and animal wastes;

(2) composting and fermenting, wherein turning is carried out every 3-4 days during fermentation;

(3) and (5) aging after fermentation is finished, thus obtaining the product.

7. The method of claim 6, wherein: the erythromycin mushroom residue is subjected to inactivation treatment before being used in the step (1), and the inactivation treatment comprises the following processes: hydrolyzing at 160-170 ℃ for 12-15 min, and spray drying at 450-500 ℃ to obtain the product;

and/or the water content of the erythrocin fungi residues is 5-13 wt.%, the nitrogen content is 1-6 wt.%, and the potassium content is K₂0.9-3 wt.% based on O;

and/or the crop waste is crushed to a length of less than 2cm prior to use in step (1).

8. The method of claim 6, wherein: in the step (1), the fermentation inoculum comprises: trichoderma harzianum, Bacillus subtilis, Bacillus licheniformis, white rot fungi, and Streptomyces; and/or, various zymophytes in the zymophyte agent are used in equal proportion; and/or the addition amount of the microbial inoculum is 1-3 g per kilogram of raw materials;

and/or after the raw materials are mixed, adjusting the water content to 50-60 wt.%.

9. The method of claim 6, wherein: in the step (2), during the fermentation period, turning piles within 1-12 days every 3 days, and after 12 days, turning piles every 4 days; and/or, during the fermentation, maintaining the water content at 50-60 wt.%.

10. The method of claim 6, wherein: in the step (3), the judgment basis of the end of fermentation is as follows: detecting that the temperature of the material is reduced to below 40 ℃ and is not increased any more;

and/or the aging treatment time is 7-15 days.

Technical Field

The invention belongs to the technical field of organic fertilizers, and particularly relates to an organic fertilizer prepared from erythromycin mushroom dregs and a preparation method thereof.

Background

The traditional chemical fertilizers such as ammoniacal nitrogen fertilizer, amide nitrogen fertilizer, cyanamide nitrogen fertilizer and the like have a certain yield increasing effect, but have the advantages of high volatility and low utilization rate. Much more application is needed to obtain yield increase, which invisibly increases the burden on farmers. Meanwhile, a large amount of traditional fertilizers used for a long time bring about a lot of side effects, such as change of soil physicochemical properties (especially pH value), destruction of soil aggregate structure (mainly related to properties such as organic matter content and conductivity), reduction of moisture capacity and the like. In particular, excessive use of nitrogen fertilizer not only affects the fertilizer efficiency, but also causes imbalance of the proportion of nitrogen, phosphorus, potassium and trace elements in soil, soil hardening and soil fertility reduction. Because of the maladjustment of the element proportion, the nitrogen element far exceeds the growth requirement of crops, the serious waste of the nitrogen element is caused, more than 65 percent of the fertilizer is lost without being absorbed by the crops, and the water eutrophication is further caused. This has become a global agricultural problem.

Therefore, the rapid popularization of advanced application technologies such as organic fertilizers, formulated fertilization and the like is a great trend of agricultural development. In recent years, with the increasing improvement of the living standard of people, the quality requirements of grains and melons and fruits are also continuously improved, the production and the application of the organic fertilizer are gradually paid attention, the traditional organic fertilizer is mainly prepared by fermenting livestock and poultry manure and straws, can provide nutrients for crops after being applied, and has the effects of balancing the nutrition and improving the soil compared with a chemical fertilizer. In order to increase the sources of organic fertilizers, the raw materials and the production method of the organic fertilizers need to be developed on the basis of the prior art.

The antibiotic residues are produced in the production industry of antibiotic raw material medicines, and are produced by using fermentation residues left after the antibiotic is produced by fermenting and metabolizing microorganisms and filtering erythromycin fermentation liquor by a ceramic membrane. The annual capacity of erythromycin in China currently exceeds 1 million tons, correspondingly, about 10 million tons of antibiotic residues are generated every year, most of the existing treatment modes of the antibiotic residues are incineration and landfill, the treatment cost is about 1000-2000 yuan/ton, and great economic pressure is brought to antibiotic production enterprises. In fact, the mushroom dregs after being inactivated by antibiotics contain rich organic nutrient substances such as protein, amino acid and the like, and also contain important inorganic nutrient elements such as nitrogen, phosphorus and potassium, and the like, and the mushroom dregs serving as fertilizer can achieve better yield increase effect than livestock and poultry manure and straw organic fertilizer.

The Chinese patent application CN103641529A provides an organic fertilizer, which comprises the following raw materials: 40-45% of erythromycin bacterial slag, 20-25% of tylosin bacterial slag, 10-15% of straws, 5-10% of beer yeast dry slag and 5-25% of human and animal excreta. However, the existing erythromycin manufacturers do not necessarily produce tylosin at the same time, and even beer at the same time. This results in a lower utility value of the solution. In addition, the erythromycin bacterium residues adopted by the method contain a large amount of erythromycin residues, and can induce microorganisms to generate mutation when directly performing composting treatment, so that the risk of drug-resistant gene proliferation and occurrence of super bacteria is generated.

The Chinese patent application CN105110826B provides a method for culturing a microbial agent by utilizing erythromycin bacterial slag, wherein the erythromycin bacterial slag is subjected to high-temperature steam explosion harmless treatment, so that antibiotic residues cannot be completely removed, and the drug resistance risk still exists in the later composting process. In addition, the composting method is only used for culturing microbial agents, and the produced organic fertilizer is not decomposed after the process treatment, so that the problem of seedling burning still exists.

In addition, in the prior art, the combination and proportion of the erythromycin mushroom residue and other components are optimized according to the properties and the nutrient content of the organic fertilizer, so that the produced organic fertilizer has poor growth promoting effect on crops or causes unnecessary damage to the element balance in soil.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides an organic fertilizer prepared from erythrocin fungi residues and a preparation method thereof, and aims to provide an organic fertilizer prepared from erythrocin fungi residues and a preparation method thereof, wherein the organic fertilizer comprises the following components: the high-quality organic fertilizer with high contents of nitrogen, phosphorus, potassium and organic matters and complete decomposition is prepared by fermenting the erythrocin fungi residues, the crop wastes and the excrement. The organic fertilizer has good quick-acting property after being applied, and does not have the problems of seedling burning and the like.

An organic fertilizer is prepared by composting and fermenting raw materials, wherein the raw materials comprise the following components in parts by weight:

30-70 parts of erythrocin bacterial residues;

5-35 parts of crop wastes;

5-35 parts of excrement.

Preferably, the raw materials comprise the following components in parts by weight:

30 parts of erythrocin bacterial residues;

35 parts of crop waste;

35 parts of excrement.

Preferably, the crop waste is selected from at least one of straw, rice chaff or bran, and is preferably straw; the straw is selected from at least one of corn straw, wheat straw, soybean straw or rice straw;

and/or, the manure is selected from cow manure.

Preferably, the organic fertilizer has the following indexes:

the organic matter content is 76.30-85.89 wt.%;

3.46-5.06 wt.% of total nitrogen content;

total phosphorus content in P₂O₅1.63-1.68 wt.%;

the total potassium content is expressed as K₂0.91-1.69 wt.% on O basis;

the pH value is 7.81-7.89;

preferably, the organic fertilizer has the following indexes:

organic content 85.89 wt.%;

total nitrogen content 5.06 wt.%;

total phosphorus content in P₂O₅1.68 wt.%;

the total potassium content is expressed as K₂0.91 wt.% O;

the pH was 7.89;

and/or the organic fertilizer has the following indexes:

organic content 76.30 wt.%;

total nitrogen content 3.46 wt.%;

total phosphorus content in P₂O₅1.63 wt.%;

the total potassium content is expressed as K₂1.69 wt.% O;

the pH was 7.81.

The invention also provides a preparation method of the organic fertilizer, which comprises the following steps:

(1) mixing the raw materials, and adding a zymophyte agent; the raw materials comprise erythromycin mushroom dregs, crop wastes and animal wastes;

(2) composting and fermenting, wherein turning is carried out every 3-4 days during fermentation;

(3) and (5) aging after fermentation is finished, thus obtaining the product.

Preferably, the erythromycin waste residue is subjected to inactivation treatment before being used in the step (1), and the inactivation treatment comprises the following processes: hydrolyzing at 160-170 ℃ for 12-15 min, and drying at 450-500 ℃ to obtain the product;

and/or the water content of the erythrocin fungi residues is 5-13 wt.%, the nitrogen content is 1-6 wt.%, and the potassium content is K₂0.9-3 wt.% based on O;

and/or the crop waste is crushed to a length of less than 2cm prior to use in step (1).

Preferably, in step (1), the fermentation inoculant comprises: trichoderma harzianum, Bacillus subtilis, Bacillus licheniformis, white rot fungi, and Streptomyces; and/or, various zymophytes in the zymophyte agent are used in equal proportion; the addition amount of the fermentation inoculum is 1-3 g per kilogram of raw materials; and/or after the raw materials are mixed, adjusting the water content to 50-60 wt.%.

Preferably, in the step (2), during the fermentation period, turning the pile every 3 days within 1-12 days, and after 12 days, turning the pile every 4 days; and/or, during the fermentation, maintaining the water content at 50-60 wt.%.

Preferably, in step (3), the judgment of the end of fermentation is based on: detecting that the temperature of the material is reduced to below 40 ℃ and is not increased any more; and/or the aging treatment time is 7-15 days.

In the invention, the weight parts of the raw materials are calculated by dry weight.

The technical scheme of the invention has the following beneficial effects:

1. the organic fertilizer has balanced nutrient content and high utilization rate. According to the invention, through reasonable raw material proportion, the total content of nitrogen, phosphorus and potassium nutrient elements is high and is more than 6.2%, which is far higher than the standard which is more than 5.0% and is specified by the organic fertilizer standard (NY 525-2012). And each nutrient element has reasonable proportion, improves the utilization rate and avoids destroying the element balance in the soil.

2. Compared with the traditional chemical fertilizer, most of the nutrients such as nitrogen, phosphorus and potassium in the organic fertilizer prepared by utilizing the erythrocin fungi residues are combined in the organic matter components and are gradually released along with the biodegradation of the organic matter, so that a good slow release effect is achieved.

3. The residual antibiotics in the erythromycin mushroom dregs can have certain drug resistance induction risk, and if the mushroom dregs containing erythromycin fermentation live bacteria and antibiotic residues are directly contacted with microorganisms in the compost fermentation bacteria agent and induced domestication is carried out, the transfer of drug resistance genes can be induced, and a novel drug resistance strain is generated. In the preferred scheme of the invention, the antibiotic residues without antibiotic residues after harmless treatment by high-temperature hydrolysis and spray drying are used as raw materials, so that the propagation of resistance genes and the proliferation of drug-resistant bacteria are effectively avoided, and the risk of drug resistance can be reduced to the minimum.

4. Changing waste into valuable, changing the erythromycin mushroom dregs generated in the antibiotic production process from waste into resources, and realizing value utilization. The organic matter content is high, and the organic fertilizer is rich in amino acid and other nutrient substances. The organic matter content in the fungus residue is up to more than 70%, and more than 50% of the organic matter content is protein and amino acid, and the organic matter content is converted into humic acid, polypeptide, amino acid and the like after composting. When the fertilizer is used as an organic fertilizer, the content of organic matters such as humic acid can be increased, hydrophilic groups in soil can be increased, the soil can form a good granular structure, and the fertilizer is favorable for keeping moisture and improving the utilization efficiency of elements such as nitrogen, phosphorus and potassium. The polypeptide and amino acid components can promote the chlorophyll content of the leaves to be increased, strengthen the photosynthesis of crops and improve the disease resistance of the crops.

5. Effectively solving the problem of seedling burning when the mushroom dregs are directly used as fertilizer. The erythromycin mushroom dregs have acidity. And after the organic fertilizer is prepared, the pH value of the soil is easy to reduce when the organic fertilizer is applied to the ground. Through research, the change of the pH value of the soil can cause the metabolism and flocculation of plants, thereby causing the change of the root system environment and causing the decay of the root system of the plants. According to the method, the organic waste materials such as cow dung, straws and fungus residues are fully and uniformly mixed to be fully fermented and decomposed, so that the phenomenon of seedling burning is successfully avoided, and a guarantee is provided for the safe use of fertilizer products.

Obviously, many modifications, substitutions, and variations are possible in light of the above teachings of the invention, without departing from the basic technical spirit of the invention, as defined by the following claims.

The present invention will be described in further detail with reference to the following examples. This should not be understood as limiting the scope of the above-described subject matter of the present invention to the following examples. All the technologies realized based on the above contents of the present invention belong to the scope of the present invention.

Drawings

FIG. 1 is a process flow diagram of a technical method for preparing organic fertilizer from erythromycin mushroom residue compost provided by the invention;

FIG. 2 shows the variation trend of NPK and organic matter content in example 2 of the present invention;

FIG. 3 shows the experimental results of potting with organic fertilizer prepared in example 2 of the present invention;

FIG. 4 shows comparative results of potting experiments with 1% addition of organic fertilizer prepared in various examples of the present invention.

Detailed Description

Example 1:

a composting technical method for preparing organic fertilizer by utilizing erythromycin fermentation bacteria residue specifically comprises the following steps:

step a, performing antibiotic inactivation and spray drying (high temperature drying at 450 ℃) processing on filter residues generated after ceramic membrane filtration through high temperature hydrolysis (saturated steam at 165 ℃ for 12min), and detecting that the content of erythromycin is lower than a detection limit through a high performance liquid chromatography to obtain erythromycin mushroom residues;

b, mixing the erythrocin bacterial residues, the cow dung and the straws according to 70 parts (calculated by dry weight) of the erythrocin bacterial residues, 15 parts (calculated by dry weight) of the cow dung and 15 parts (calculated by dry weight) of the straws;

c, adding 3g/kg of compost fermentation bacteria agent into the mixed material and uniformly mixing; the fermentation inoculum is trichoderma harzianum, bacillus subtilis, bacillus licheniformis, white rot fungi and streptomyces which are mixed in equal proportion;

d, regulating the water content to 60% by using tap water;

and e, filling the mixed material into a heat-insulation compost fermentation container, wherein the compost fermentation container is a square or round container made of plastics or other equivalent materials and wrapped by heat-insulation cotton with the thickness of 5cm, the total height of the container is not less than 50cm, and the material filling height is 40 cm. Inserting a thermometer to record temperature data, and covering to start fermentation;

and f, turning the piles once 3d in the initial stage of compost fermentation (rapid temperature rise), and turning the piles once 4d after 12d (temperature does not rise violently any more). Regulating the water content to 50-60% with tap water in the whole process;

and g, after the temperature of the materials is reduced to below 40 ℃ after 30 days, the temperature is not increased, pile turning is not performed, aging treatment is performed for 14 days, and composting is completed.

In the composting process, each turning and sampling is used for detecting the residue of the fuchsin sample, the content of organic matters, the content of nitrogen, phosphorus and potassium elements, pH and conductivity, and the fertilizer efficiency and the maturity are verified by a pot experiment after composting is completed. The residual concentration of erythromycin obtained by the measurement is shown in Table 1.

Table 1 example 1 erythromycin residue detection results in composting process

After compound composting treatment, the fertilizer efficiency indexes of the obtained decomposed organic fertilizer are as follows: pH7.89, organic matter content 85.89%, total nitrogen content 5.06%, total phosphorus content (expressed as P)₂O₅Calculated as K) 1.68%, total potassium content (in K)₂Calculated by O) 0.91 percent, and the total amount of the nitrogen, phosphorus and potassium nutrient elements is 7.65 percent.

Example 2:

the technical method for preparing the organic fertilizer by the erythromycin fermentation bacteria residue compost specifically comprises the following steps:

step a, performing antibiotic inactivation and spray drying (high temperature drying at 450 ℃) processing on filter residues generated after ceramic membrane filtration through high temperature hydrolysis (saturated steam at 165 ℃ for 12min), and detecting that the content of erythromycin is lower than a detection limit through a high performance liquid chromatography to obtain erythromycin mushroom residues;

b, mixing the erythrocin bacterial residues, the cow dung and the straws according to 30 parts (calculated by dry weight) of the erythrocin bacterial residues, 35 parts (calculated by dry weight) of the cow dung and 35 parts (calculated by dry weight) of the straws;

c, adding 3g/kg of compost fermentation bacteria agent into the mixed material and uniformly mixing; the fermentation inoculum is trichoderma harzianum, bacillus subtilis, bacillus licheniformis, white rot fungi and streptomyces which are mixed in equal proportion;

d, regulating the water content to 60% by using tap water;

and e, filling the mixed material into a heat-insulation compost fermentation container, wherein the compost fermentation container is a square or round container made of plastics or other equivalent materials and wrapped by heat-insulation cotton with the thickness of 5cm, the total height of the container is not less than 50cm, and the material filling height is 40 cm. Inserting a thermometer to record temperature data, and covering to start fermentation;

and f, turning the piles once 3d in the initial stage of compost fermentation (rapid temperature rise), and turning the piles once 4d after 12d (temperature does not rise violently any more). Regulating the water content to 50-60% with tap water in the whole process;

and g, after the temperature of the materials is reduced to below 40 ℃ after 30 days, the temperature is not increased, pile turning is not performed, aging treatment is performed for 14 days, and composting is completed.

In the composting process, each turning and sampling is used for detecting the residue of the fuchsin sample, the content of organic matters, the content of nitrogen, phosphorus and potassium elements, pH and conductivity, and the fertilizer efficiency and the maturity are verified by a pot experiment after composting is completed. The residual concentration of erythromycin obtained by the measurement is shown in Table 2.

Table 2 example 2 erythromycin residue detection results in composting process

Date of composting

0d

2d

6d

19d

28d

43d

Erythromycin content

Not detected out

Not detected out

Not detected out

Not detected out

Not detected out

Not detected out

As shown in figure 2, the fertilizer efficiency indexes of the decomposed organic fertilizer after compound composting treatment are as follows: pH7.81, organic matter content 76.30%, total nitrogen content 3.46%, total phosphorus content (expressed as P)₂O₅Calculated as K) 1.63%, and the total potassium content (in terms of K)₂Calculated by O) 1.69 percent and the total amount of the nitrogen, phosphorus and potassium nutrient elements is 6.78 percent.

Comparative example 1:

the technical method for preparing the organic fertilizer by the erythromycin fermentation bacteria residue compost specifically comprises the following steps:

step a, performing antibiotic inactivation and spray drying (high temperature drying at 450 ℃) processing on filter residues generated after ceramic membrane filtration through high temperature hydrolysis (saturated steam at 165 ℃ for 12min), and detecting that the content of erythromycin is lower than a detection limit through a high performance liquid chromatography to obtain erythromycin mushroom residues;

b, mixing the erythrocin bacterial residues, the cow dung and the straws according to 10 parts (calculated by dry weight) of the erythrocin bacterial residues, 45 parts (calculated by dry weight) of the cow dung and 45 parts (calculated by dry weight) of the straws;

c, adding 3g/kg of compost fermentation bacteria agent into the mixed material and uniformly mixing; the fermentation inoculum is trichoderma harzianum, bacillus subtilis, bacillus licheniformis, white rot fungi and streptomyces which are mixed in equal proportion;

d, regulating the water content to 60% by using tap water;

and e, filling the mixed material into a heat-insulation compost fermentation container, wherein the compost fermentation container is a square or round container made of plastics or other equivalent materials and wrapped by heat-insulation cotton with the thickness of 5cm, the total height of the container is not less than 50cm, and the material filling height is 40 cm. Inserting a thermometer to record temperature data, and covering to start fermentation;

and f, turning the piles once 3d in the initial stage of compost fermentation (rapid temperature rise), and turning the piles once 4d after 12d (temperature does not rise violently any more). Regulating the water content to 50-60% with tap water in the whole process;

and g, after the temperature of the materials is reduced to below 40 ℃ after 30 days, the temperature is not increased, pile turning is not performed, aging treatment is performed for 14 days, and composting is completed.

In the composting process, each turning and sampling is used for detecting the residue of the fuchsin sample, the content of organic matters, the content of nitrogen, phosphorus and potassium elements, pH and conductivity, and the fertilizer efficiency and the maturity are verified by a pot experiment after composting is completed. The residual concentration of erythromycin obtained by the measurement is shown in Table 2.

Table 3 example 3 erythromycin residue detection results in composting process

Date of composting

0d

2d

6d

19d

28d

43d

Erythromycin content

Not detected out

Not detected out

Not detected out

Not detected out

Not detected out

Not detected out

After compound composting treatment, the fertilizer efficiency indexes of the obtained decomposed organic fertilizer are as follows: pH7.44, organic matter content 73.26%, total nitrogen content 2.63%, total phosphorus content (expressed as P)₂O₅Calculated as K) 1.57%, and the total potassium content (in terms of K)₂Calculated by O) 2.22 percent and the total amount of the nitrogen, phosphorus and potassium nutrient elements is 6.42 percent.

From the comparative example, the pH value, the organic matter content and the total amount of the nitrogen, phosphorus and potassium nutrient elements of the organic fertilizer are all reduced when the use amount of the raw materials exceeds the range of the invention, and the proportion of the nitrogen, phosphorus and potassium nutrient elements is far away from the reasonable requirement of crop growth.

Experimental example 1

This experimental example a potting experiment of corn was carried out using the organic fertilizer prepared in example 2, and three experimental groups were a no fertilizer control group without fertilizer application, a 1% fertilizer application amount (corresponding to 2 tons of fertilizer per mu) group and a 2% fertilizer application amount (corresponding to 4 tons of fertilizer per mu), respectively.

The results show (fig. 3) that germination and growth were significantly promoted in the 1% and 2% fertilization rate groups compared to the no fertilizer control group.

Experimental example 2

This example potting experiments of corn were carried out using the organic fertilizers prepared in example 1, example 2 and comparative example 1, all at 1% fertilizing amount (corresponding to 2 tons of fertilizer per acre).

The results show (fig. 4) that germination and growth of corn were significantly promoted in the experimental groups of examples 1 and 2 compared to the control group without fertilizer and the experimental group of comparative example 1. The growth promoting conditions of the experimental group of the example 2 and the experimental group of the example 1 are similar and are superior to the growth conditions of the experimental group of the comparative example 1.

In conclusion, the organic fertilizer provided by the invention has high organic matter content, high total nutrient element content and high element content proportion, and has excellent promotion effect on the germination and growth of crops. In addition, the invention carries out safe resource utilization on the erythrocin fungi residues, has high economic benefit, and has little change and damage to soil after long-term use, thereby having good application prospect.