阅读说明：本技术 猪粪快速腐熟发酵有机肥及其制备方法 (Organic fertilizer prepared by quickly decomposing and fermenting pig manure and preparation method thereof ) 是由 霍杏娟 王宗抗 孟品品 冷为贵 陈燕文 吴冬 曾国才 于 2021-08-30 设计创作，主要内容包括：本发明公开了一种猪粪快速腐熟发酵有机肥及其制备方法,其中猪粪快速腐熟发酵有机肥包括猪粪：60-80％；辅料：20-40％；发酵菌剂0.1-0.2％；腐植酸0.25-0.5％；米糠0.25-0.5％；红糖粉0.1-0.2％；废糖蜜0.1-0.2％；本申请提供的制备方法工艺简单好控制,物料简单易得,成品质量稳定；通过优化物料组合,提供容易被微生物利用的养分,快速激活发酵菌种,使发酵温度快速升至高温阶段,大大缩短了有机肥的发酵制备时间,提高了生产效率。(The invention discloses a pig manure fast-decomposing fermented organic fertilizer and a preparation method thereof, wherein the pig manure fast-decomposing fermented organic fertilizer comprises the following components: 60 to 80 percent; auxiliary materials: 20 to 40 percent; 0.1 to 0.2 percent of zymogen agent; 0.25 to 0.5 percent of humic acid; 0.25-0.5% of rice bran; brown sugar powder 0.1-0.2%; 0.1-0.2% of waste molasses; the preparation method provided by the application has the advantages of simple and well-controlled process, simple and easily-obtained materials and stable finished product quality; by optimizing material combination, the nutrient which is easily utilized by microorganisms is provided, the fermentation strain is quickly activated, the fermentation temperature is quickly increased to a high-temperature stage, the fermentation preparation time of the organic fertilizer is greatly shortened, and the production efficiency is improved.)

1. The organic fertilizer is characterized by comprising a fermentation microbial inoculum, pig manure and microbial culture substances, wherein the microbial culture substances are brown sugar powder, waste molasses and rice bran special for fermentation and comprise a plurality of small molecular carbon sources and amino acids, so that microorganisms are propagated, and the number of floras is increased rapidly; the fermentation inoculum is one or more of filamentous fungi, actinomycetes and yeast; after the pig manure organic fertilizer is mixed with the pig manure, microorganisms are quickly excited and started to quickly occupy the advantages of flora, the reproduction of putrefying microorganisms is inhibited, the odor given out by wastes is reduced, the fermentation temperature is quickly increased, and the decomposing and fermenting time of the pig manure organic fertilizer is shortened to 6-10 days.

2. The fast-decomposing fermented organic fertilizer containing pig manure according to claim 1 is characterized by comprising the following components in percentage by weight:

pig manure: 60 to 80 percent;

auxiliary materials: 20 to 40 percent;

0.1 to 0.2 percent of zymogen agent;

0.25 to 0.5 percent of humic acid;

0.25-0.5% of rice bran;

brown sugar powder for fermentation 0.1-0.2%;

0.1-0.2% of waste molasses.

3. The organic fertilizer is characterized in that the auxiliary material is one or more of mushroom residue and straw stalk; pulverizing, sieving, and selecting 60-100 mesh mushroom residue or straw stalk.

4. The fast-decomposing fermented organic fertilizer containing pig manure according to claim 1, wherein the number of effective viable bacteria of the fermentation microbial inoculum is more than 1 hundred million/g.

5. The fast-decomposing fermented organic fertilizer containing pig manure as claimed in claim 4, wherein the mass ratio of the total mass of brown sugar powder and waste honey sugar special for fermentation to rice bran is 1: 1.

6. A preparation method of a pig manure fast-decomposing fermented organic fertilizer is characterized in that the pig manure fast-decomposing fermented organic fertilizer as claimed in any one of claims 1-4 is applied and produced; the preparation method comprises the following steps:

s1, mixing pig manure and auxiliary materials according to the carbon-nitrogen ratio of 1: 20-30, uniformly mixing to obtain a mixture A;

s2: uniformly mixing a fermentation inoculant, humic acid, rice bran, brown sugar powder and special fermentation waste molasses to obtain a mixture B;

s3, mixing the mixture A and the mixture B to obtain a fermented material, and adjusting the water content of the fermented material to be 45-55%;

s4, placing the fermentation material on a fermentation bed of a fermentation device for fermentation to obtain the decomposed pig manure organic fertilizer.

7. The method for preparing the pig manure rapidly-decomposing fermented organic fertilizer as claimed in claim 6, wherein in step S2, firstly, the fermentation bacteria agent, rice bran, brown sugar powder and waste molasses special for fermentation are mixed, and cultured for 8-10 hours at a temperature range of 25-40 ℃; then adding humic acid, stirring, and uniformly mixing to obtain a mixture B.

8. The method for preparing the pig manure rapidly-decomposing fermented organic fertilizer as claimed in claim 6, wherein in step S4, the fermented material is placed on the first layer fermentation bed of the fermentation equipment for fermentation, the material pile is 30-40cm high, and the fermented material is moved to the next layer fermentation bed after 24 hours; moving one layer downwards every 24 hours, moving the layer 3-4 times in the whole process, and keeping the temperature at 55 ℃ for 3-6 days for treatment.

9. The method for preparing the pig manure rapidly-decomposing fermented organic fertilizer as claimed in claim 6, wherein after the step S4, the temperature is adjusted, the temperature of the fermented material is reduced at 55 ℃, the fermented material is fermented for 4-5 days at a temperature below 45 ℃, and the fermented material on the bottommost layer of the fermentation bed is discharged to obtain the decomposed pig manure organic fertilizer.

Technical Field

The invention relates to the field of fertilizer processing, in particular to a fermented organic fertilizer capable of quickly decomposing pig manure and a preparation method thereof.

Background

With the continuous development of animal husbandry in China, the pig raising industry is greatly improved, and China becomes the first big pig raising country in the world. According to the report of the national statistical bureau, the total feeding quantity (the slaughtering quantity and the stocking quantity) of live pigs per year in China currently exceeds 10 hundred million. The pig raising industry is continuously developed to gradually meet the increasing demand of people for pork, but the pig raising industry also faces some increasingly outstanding problems while developing. In recent years, large pig farms are gradually increased, the number of scattered households is less, the pig raising mode is changed from rural scattered raising to intensive pig raising, pig food is changed from pigwash left by people to unified feed, the quantity of pig manure is large, and the pollution of the manure to the environment is increasingly serious. The livestock and poultry manure causes pollution to underground water, the content of microorganisms exceeds the standard, and toxic and harmful substances seriously exceed the bearing capacity of the environment; meanwhile, the air pollution caused by the excrement is obvious, and harmful gases such as ammonia gas and sulfur dioxide are increased; moreover, animal manure causes problems such as soil acidification and heavy metal residue. How to effectively treat the pollution of the livestock and poultry manure, develop circular economy, and efficiently utilize the livestock and poultry manure to change waste into valuable becomes a problem which is urgently needed to be solved in the economic development of China.

The pig manure contains a large amount of elements such as nitrogen, phosphorus and the like, and is an organic fertilizer with rich nutrition. At present, in the fertilizer application of pig manure, the processes mainly comprise direct drying, natural composting, microbial inoculant fermentation and the like. The microbial inoculant fermentation is characterized in that functional microbes are added on the basis of composting, the indigenous microbes are replaced by rapid propagation of beneficial microbes, the microbial community structure of the composting is regulated, the activity of the beneficial microbes is improved, and a complex and stable ecological system is formed by the mutual synergistic action of strains. The method has the advantages that organic materials such as excrement, straw and the like can be quickly decomposed to generate heat energy, so that the temperature of the organic materials is quickly raised, harmful microorganisms are inhibited or killed, the degree of decomposition is improved, and the biological organic fertilizer is prepared in a real sense. However, the existing microbial inoculant fermentation process still has the defects of serious odor, high heavy metal residue, low decomposition degree, long fermentation period and the like in the application of pig manure fertilization.

Disclosure of Invention

Aiming at the defects in the technology, the invention provides the fermented organic fertilizer for quickly decomposing the pig manure and the preparation method thereof, the process is simple and easy to control, the materials are simple and easy to obtain, and the quality of the finished product is stable; by optimizing material combination, the nutrient which is easily utilized by microorganisms is provided, the fermentation strain is quickly activated, the fermentation temperature is quickly increased to a high-temperature stage, the fermentation preparation time of the organic fertilizer is greatly shortened, and the production efficiency is improved.

In order to realize the purpose, the invention discloses a pig manure fast-decomposing fermented organic fertilizer which comprises a fermentation microbial inoculum, pig manure and a microbial culture substance, wherein the microbial culture substance is brown sugar powder, waste molasses and rice bran special for fermentation and comprises a plurality of small molecular carbon sources and amino acids, so that the microorganisms are propagated, and the number of floras is increased rapidly; the fermentation inoculum is one or more of filamentous fungi, actinomycetes and yeast; after the pig manure organic fertilizer is mixed with the pig manure, microorganisms are quickly excited and started to quickly occupy the advantages of flora, the reproduction of putrefying microorganisms is inhibited, the odor given out by wastes is reduced, the fermentation temperature is quickly increased, and the decomposing and fermenting time of the pig manure organic fertilizer is shortened to 6-10 days.

Preferably, the paint comprises the following components in percentage by weight:

pig manure: 60 to 80 percent;

auxiliary materials: 20 to 40 percent;

0.1 to 0.2 percent of zymogen agent;

0.25 to 0.5 percent of humic acid;

0.25-0.5% of rice bran;

brown sugar powder for fermentation 0.1-0.2%;

0.1-0.2% of waste molasses.

Preferably, the auxiliary material is one or a mixture of mushroom residues or straw stalks; pulverizing, sieving, and selecting 60-100 mesh mushroom residue or straw stalk.

Preferably, the number of effective viable bacteria of the fermentation inoculum is more than 1 hundred million/g.

Preferably, the mass ratio of the total mass of the brown sugar powder and the waste honey sugar special for fermentation to the rice bran is 1: 1.

The invention also discloses a preparation method of the pig manure fast-decomposing fermented organic fertilizer, which is applied to and used for producing the pig manure fast-decomposing fermented organic fertilizer; the preparation method comprises the following steps:

s1, mixing pig manure and auxiliary materials according to the carbon-nitrogen ratio of 1: 20-30, uniformly mixing to obtain a mixture A;

s2: uniformly mixing a fermentation inoculant, humic acid, rice bran, brown sugar powder and waste molasses to obtain a mixture B;

s3, mixing the mixture A and the mixture B to obtain a fermented material, and adjusting the water content of the fermented material to be 45-55%;

s4, placing the fermentation material on a fermentation bed of a fermentation device for fermentation to obtain the decomposed pig manure organic fertilizer.

Preferably, in step S2, the fermentation inoculum is first mixed with rice bran, brown sugar powder, and molasses, and cultured at 25-40 deg.C for 8-10 hr; then adding humic acid, stirring, and uniformly mixing to obtain a mixture B.

Preferably, in step S4, the fermentation material is placed on the first layer fermentation bed of the fermentation equipment for fermentation, the height of the material pile is 30-40cm, and after 24 hours, the fermentation material is moved to the next layer fermentation bed; moving one layer downwards every 24 hours, moving the layer 3-4 times in the whole process, and keeping the temperature at 55 ℃ for 3-6 days for treatment.

Preferably, after step S4, the temperature is adjusted, the fermented material at 55 ℃ is cooled, the temperature is controlled below 45 ℃ for fermentation for 4-5 days, and the fermented material on the bottommost fermentation bed is unloaded to obtain the decomposed pig manure organic fertilizer.

The invention has the beneficial effects that: the fast-decomposing fermented organic fertilizer of pig manure provided by the invention has the following advantages:

1) the special brown sugar powder for fermentation, the waste molasses, the rice bran and other nutrients which are easily utilized by microorganisms are added into the microbial inoculum and are mixed with the pig manure and other main and auxiliary materials after being mixed uniformly, so that the solid microbial inoculum and the materials can be mixed more uniformly, and moreover, a small molecular carbon source, amino acid and the like which are easily utilized are provided for beneficial microorganisms, so that the microorganisms can quickly adapt to a new environment to carry out mass propagation, the advantages of flora are occupied, the fermentation temperature is quickly raised, the temperature is raised to more than 50 ℃ within 24 hours (more than 60 ℃ in summer), the rotten fermentation time of the pig manure organic fertilizer is shortened to 6-10 days, 4-10 days are reduced compared with 10-20 days in the prior art, and the production efficiency is improved. Moreover, the microbial inoculum is quickly excited and started, quickly occupies the advantages of flora, inhibits the propagation of spoilage microorganisms, and reduces the odor emitted by wastes.

2) The main materials for fermentation are easily obtained and are solid wastes which are easily utilized by microorganisms, the material combination is simple, the source is stable, and the cost is low; the fermentation process is easy to control, and the product quality is stable.

3) The small intelligent fermentation equipment is used for replacing a common fermentation tank, the occupied area is small, the flexible assembly is realized, the treatment efficiency is high, and the energy consumption is low. The small intelligent fermentation equipment can be assembled into layers according to the needs, and the requirements of quick decomposition and fermentation of the pig manure can be met by 4-5 layers generally; does not need forced ventilation for oxygen supply, achieves the functions of oxygen supply and pile turning through layer moving, and provides conditions for the rapid treatment of the pig manure.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a flow chart of the steps of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "suspended", and the like do not imply that the components are required to be absolutely horizontal or suspended, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The invention discloses a pig manure fast-decomposing fermented organic fertilizer which comprises the following components in percentage by weight: pig manure: 60 to 80 percent; auxiliary materials: 20 to 40 percent; 0.1 to 0.2 percent of zymogen agent; 0.25 to 0.5 percent of humic acid; 0.25-0.5% of rice bran; brown sugar powder 0.1-0.2%; 0.1-0.2% of waste molasses. In the embodiment, the pig manure and the auxiliary materials are mixed, so that the auxiliary materials are utilized to increase gaps among the pig manure, increase an air flowing area, and can be filled with more microorganisms, so that the microorganisms can better act on the pig manure, and the substances in the pig manure are utilized to grow and breed, so that the pig manure is fermented to obtain the organic fertilizer; in addition, the auxiliary materials also provide nutrient substances for the growth of the microorganisms, and further increase the propagation speed of the microorganisms.

In order to realize the purpose, the auxiliary material is one or a mixture of mushroom residue and straw stalk; pulverizing, sieving, and selecting 60-100 mesh mushroom residue or straw stalk. In the embodiment, the rice straw and the mushroom residues are adopted, so that the cellulose in the auxiliary materials can be fully utilized as the nutrient required by the growth and the propagation of the microorganisms; cellulose is a macromolecular polysaccharide substance consisting of glucose, and is crushed after being crushed and screened, so that the obtained cellulose has small molecular particle size, and the cellulose is more convenient to act with fermentation strains to convert the cellulose into substances such as glucose and the like.

The fermentation microbial inoculum contains one or more of filamentous fungi, actinomycetes and microzyme, and the number of effective viable bacteria is more than 1 hundred million/g; the mass ratio of the total mass of the brown sugar powder and the waste honey sugar to the rice bran is 1: 1. In the embodiment, in order to convert the pig manure and the auxiliary materials into the organic fertilizer again, the fermentation bacteria agent is particularly added for conversion, and the fermentation bacteria agent is required to meet a certain requirement, if the requirement is lower than the requirement, after the fermentation bacteria agent is added into the pig manure, a part of the fermentation bacteria can die due to the adaptation process of the environment, so that the number of effective fermentation bacteria is reduced, the fermentation time is prolonged, and the fermentation rate is reduced; therefore, proper effective viable bacteria amount is needed, so that the pig manure can be quickly treated, and the quick fermentation can be realized in a short time; the brown sugar powder and the waste honey sugar are used as nutrient substances for early culture of the fermentation inoculant, and substances such as glucose, fructose and the like are provided for early growth and propagation of the fermentation inoculant, so that the fermentation inoculant can rapidly grow and propagate to generate a larger amount of microorganisms; in the specific use process, the brown sugar powder is special brown sugar powder for fermentation; the rice bran is a main byproduct of rice processing, contains a large amount of vitamins, phytol, amino acids, mineral substances and the like, and can meet the requirements of other nutrient substances except sugar required by the growth and the propagation of microorganisms; therefore, the rice bran, the brown sugar powder and the waste molasses are effectively mixed, so that enough nutrition is provided for the early growth and propagation of microorganisms.

Please refer to fig. 1; the invention also discloses a preparation method of the pig manure fast-decomposing fermented organic fertilizer, which is applied to producing the pig manure fast-decomposing fermented organic fertilizer claimed above; the preparation method comprises the following steps:

s1, mixing pig manure and auxiliary materials according to the carbon-nitrogen ratio of 1: 20-30, uniformly mixing to obtain a mixture A;

s2: uniformly mixing a fermentation inoculant, humic acid, rice bran, brown sugar powder and waste molasses to obtain a mixture B;

s3, mixing the mixture A and the mixture B to obtain a fermented material, and adjusting the water content of the fermented material to be 45-55%;

s4, placing the fermentation material on a fermentation bed of a fermentation device for fermentation to obtain the decomposed pig manure organic fertilizer.

In the specific implementation process, in step S2, firstly, the zymophyte agent, the rice bran, the brown sugar powder and the waste molasses are mixed and cultured for 8 to 10 hours at the temperature of between 25 and 40 ℃; then adding humic acid, stirring, and uniformly mixing to obtain a mixture B; because the fermentation strain contains microzyme, actinomycetes and other microorganisms, the optimal propagation temperature of the microzyme is about 30 ℃, and the optimal propagation temperature of the actinomycetes is about 40 ℃, the method is carried out by adopting a step-shaped heating mode, 5 ℃ is taken as a step, each step is cultured for about 2 hours at the temperature, namely, the step is cultured for 2 hours at 25 ℃, and then the temperature is raised to 30 ℃ for 2 hours; then raising the temperature to 35 ℃ for culturing for 2 hours, and finally culturing for 2 hours at 40 ℃, so that the proper growth temperature can be repeatedly given to each microorganism, the microorganism can be rapidly propagated, and the rice bran, the brown sugar powder and the waste molasses are used as necessary nutrition providers for the propagation of the microorganism, so that the sufficient supply of nutrient substances is ensured; humic acid is remains of animals and plants, mainly remains of plants, and is a kind of organic substances which are caused and accumulated by a series of processes of microbial decomposition, transformation and geochemistry; the organic substances in the humic acid can be further decomposed by microorganisms, so that after being mixed with the pig manure, the humic acid can generate more effective fertility, and the finally obtained fermented organic fertilizer has stronger fertility.

Placing the fermentation material on a first layer fermentation bed of a fermentation device for fermentation, wherein the height of the material pile is 30-40cm, and moving the fermentation material to a next layer fermentation bed after 24 hours; moving one layer downwards every 24 hours, moving the layer 3-4 times in the whole process, and keeping the temperature at 55 ℃ for 3-6 days for treatment. And after the step S4, adjusting the temperature, cooling the fermented material at 55 ℃, controlling the temperature below 45 ℃ for fermentation for 4-5 days, and unloading the fermented material on the bottommost fermentation bed to obtain the decomposed pig manure organic fertilizer. In the embodiment, in order to reduce the harm to the environment, the whole pig manure is fermented by adopting fermentation equipment, so that the problems of large smell, nutrient loss, environmental pollution and the like caused by open-air fermentation are solved; in addition, the fermentation temperature can be effectively adjusted by utilizing the fermentation equipment, and the working temperature of microorganisms is controlled, so that the aim of rapid fermentation is fulfilled; the water content condition is to provide a good environment for microorganisms, if the water content is too high, the strains can not breathe smoothly, so that part of the strains such as saccharomycetes can breathe without oxygen, and the generated substances such as alcohol and the like can not be absorbed by soil, so that the fertility of the organic fertilizer is reduced; if the water content is too low, sufficient water supply cannot be provided for the microorganisms to breathe, so that the whole water content needs to be controlled within a proper range, the microorganisms can breathe in oxygen, substances in the pig manure are decomposed, and organic matters capable of being absorbed by plants are generated.

The invention is illustrated below by means of specific examples, although the scope of protection of the invention is not limited thereto, and conventional alternatives that can be conceived by a person skilled in the art without inventive effort fall within the scope of protection of the present application.

The first embodiment is as follows:

weighing pig manure respectively: 6 kg; auxiliary materials: 3.15 kg; 0.1kg of zymophyte agent; 0.25kg of humic acid; 0.25kg of rice bran; brown sugar powder 0.1 kg; 0.15kg of waste molasses; then crushing the auxiliary materials, sieving the crushed auxiliary materials by a 60-mesh sieve to obtain processing auxiliary materials, and mixing the pig manure and the processing auxiliary materials according to the nitrogen-carbon ratio of 1:20 to obtain a mixture A; then mixing the fermentation inoculum with rice bran, brown sugar powder and waste molasses, carrying out step-shaped heating treatment at 25-40 ℃, adding humic acid after 8 hours, and uniformly stirring again to obtain a mixture B; and then mixing the mixture A and the mixture B, adjusting the water content of the mixture A to about 50%, and then transferring the mixture A to fermentation equipment for fermentation to obtain the pig manure decomposed organic fertilizer.

Example two:

weighing pig manure respectively: 6 kg; auxiliary materials: 3.15 kg; 0.1kg of zymophyte agent; 0.25kg of humic acid; 0.25kg of rice bran; brown sugar powder 0.1 kg; 0.15kg of waste molasses; then crushing the auxiliary materials, sieving the crushed auxiliary materials by a 80-mesh sieve to obtain processing auxiliary materials, and mixing the pig manure and the processing auxiliary materials according to the nitrogen-carbon ratio of 1:20 to obtain a mixture A; then mixing the fermentation inoculum with rice bran, brown sugar powder and waste molasses, carrying out step-shaped heating treatment at 25-40 ℃, adding humic acid after 8 hours, and uniformly stirring again to obtain a mixture B; and then mixing the mixture A and the mixture B, adjusting the water content of the mixture A to about 50%, and then transferring the mixture A to fermentation equipment for fermentation to obtain the pig manure decomposed organic fertilizer.

Example three:

weighing pig manure respectively: 6 kg; auxiliary materials: 3.15 kg; 0.1kg of zymophyte agent; 0.25kg of humic acid; 0.25kg of rice bran; brown sugar powder 0.1 kg; 0.15kg of waste molasses; then crushing the auxiliary materials, sieving the crushed auxiliary materials by a 100-mesh sieve to obtain processing auxiliary materials, and mixing the pig manure and the processing auxiliary materials in a nitrogen-carbon ratio of 1:20 to obtain a mixture A; then mixing the fermentation inoculum with rice bran, brown sugar powder and waste molasses, carrying out step-shaped heating treatment at 25-40 ℃, adding humic acid after 8 hours, and uniformly stirring again to obtain a mixture B; and then mixing the mixture A and the mixture B, adjusting the water content of the mixture A to about 50%, and then transferring the mixture A to fermentation equipment for fermentation to obtain the pig manure decomposed organic fertilizer.

The above three examples were tested, and the test results are shown in the following table:

after comparison through the three examples, the fact that the amount of each nutrient substance is increased along with the increase of the grinding degree of the auxiliary materials is discovered, but when the grinding degree is too high, the amount of the nutrient substance is reduced probably because the particle length of the auxiliary materials is too low after the grinding degree is too high, after the auxiliary materials are mixed with the pig manure, an agglomeration phenomenon is formed or a propagation area for microorganism implantation cannot be formed, so that the microorganism cannot completely react with the pig manure to generate enough nutrient substances, while the moisture content in the third example is increased, so that the microorganism is possibly subjected to anaerobic respiration instead of aerobic respiration, the moisture in the pig manure is not consumed, and the moisture content is increased, therefore, in the subsequent experiment process, the 80-mesh auxiliary materials are selected as the best choice.

Example four:

weighing pig manure respectively: 7.5 kg; auxiliary materials: 2.375 kg; 0.15kg of zymophyte agent; 0.4kg of humic acid; 0.35kg of rice bran; brown sugar powder 0.15 kg; 0.2kg of waste molasses; then crushing the auxiliary materials, sieving the crushed auxiliary materials by a 80-mesh sieve to obtain processing auxiliary materials, and mixing the pig manure and the processing auxiliary materials according to the nitrogen-carbon ratio of 1:20 to obtain a mixture A; then mixing the fermentation inoculum with rice bran, brown sugar powder and waste molasses, carrying out step-shaped heating treatment at 25-40 ℃, adding humic acid after 8 hours, and uniformly stirring again to obtain a mixture B; and then mixing the mixture A and the mixture B, adjusting the water content of the mixture A to about 50%, and then transferring the mixture A to fermentation equipment for fermentation to obtain the pig manure decomposed organic fertilizer.

Example five:

weighing pig manure respectively: 7.5 kg; auxiliary materials: 2.375 kg; 0.15kg of zymophyte agent; 0.4kg of humic acid; 0.35kg of rice bran; brown sugar powder 0.15 kg; 0.2kg of waste molasses; then crushing the auxiliary materials, sieving the crushed auxiliary materials by a 80-mesh sieve to obtain processing auxiliary materials, and mixing the pig manure and the processing auxiliary materials according to the nitrogen-carbon ratio of 1:25 to obtain a mixture A; then mixing the fermentation inoculum with rice bran, brown sugar powder and waste molasses, carrying out step-shaped heating treatment at 25-40 ℃, adding humic acid after 8 hours, and uniformly stirring again to obtain a mixture B; and then mixing the mixture A and the mixture B, adjusting the water content of the mixture A to about 50%, and then transferring the mixture A to fermentation equipment for fermentation to obtain the pig manure decomposed organic fertilizer.

Example six:

weighing pig manure respectively: 7.5 kg; auxiliary materials: 2.375 kg; 0.15kg of zymophyte agent; 0.4kg of humic acid; 0.35kg of rice bran; brown sugar powder 0.15 kg; 0.2kg of waste molasses; then crushing the auxiliary materials, sieving the crushed auxiliary materials by a 80-mesh sieve to obtain processing auxiliary materials, and mixing the pig manure and the processing auxiliary materials according to the nitrogen-carbon ratio of 1:30 to obtain a mixture A; then mixing the fermentation inoculum with rice bran, brown sugar powder and waste molasses, carrying out step-shaped heating treatment at 25-40 ℃, adding humic acid after 8 hours, and uniformly stirring again to obtain a mixture B; and then mixing the mixture A and the mixture B, adjusting the water content of the mixture A to about 50%, and then transferring the mixture A to fermentation equipment for fermentation to obtain the pig manure decomposed organic fertilizer.

The above three examples were tested, and the test results are shown in the following table:

through detection, the carbon-nitrogen ratio of the three groups of embodiments is changed a little when the pig manure and the auxiliary materials are mixed, the carbon-nitrogen ratio refers to the ratio of the total content of carbon in the organic matters to the total content of nitrogen, the proper nitrogen-carbon ratio is favorable for microbial fermentation and decomposition, analysis shows that the difference of nutrient substances in the three embodiments is small, the total nutrient content (dry basis) of all the treatments is more than 5%, and the organic matter content (dry basis) is more than 45%, so that the three embodiments meet the standard requirements of organic fertilizers specified by the state.

Breeding experiments were performed on the above three groups of examples, and a set of blank control experiments were added, with the following results:

sample name	The germination rate of the seeds is%	GI index%
			Blank space	95.00％	/
Treatment four	95.00％	93.00％
			Treatment five	96.67％	106.35％
Treatment six	96.67％	126.30％

The germination rate and GI index of the seeds are important indexes for judging the decomposition degree of the organic fertilizer. Judging that the food is not decomposed when the GI index is less than 80 percent; the GI index is 80-90 percent, and the product is judged to be thoroughly decomposed; the GI index is more than 90%, the product is judged to be completely decomposed, and the GI calculation mode of the application is as follows:

research shows that the decomposition degree of the organic fertilizer gradually increases along with the increase of the nitrogen-carbon ratio, but because the nutrient substances in the organic fertilizer are limited, the amount of the finally produced nutrient substances is not influenced by the excessively high carbon-nitrogen ratio, and the nitrogen-carbon ratio is selected to be 1:25 as the optimal nitrogen-carbon ratio.

The invention has the advantages that:

1) the pig manure decomposition fermentation time is shortened to 6-10 days, and is reduced by 4-10 days compared with the conventional fermentation time, so that the production efficiency is improved;

2) the obtained decomposed organic fertilizer is nontoxic and harmless: the germination rate of the seeds is more than 85 percent; GI index is more than 90%, and GI index of some batches is more than 100%;

3) the process is simple and uncomplicated to operate, the fermentation process is easy to control, and the quality of the organic fertilizer is stable.

The above disclosure is only for a few specific embodiments of the present invention, but the present invention is not limited thereto, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.