CN115093259A - Method for carrying out aerobic composting on livestock and poultry manure added with bean dregs and compost product - Google Patents
Method for carrying out aerobic composting on livestock and poultry manure added with bean dregs and compost product Download PDFInfo
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Abstract
The invention provides a method for carrying out aerobic composting on livestock and poultry manure added with bean dregs and a compost product, wherein the method for carrying out the aerobic composting on the livestock and poultry manure added with the bean dregs comprises the following steps: measuring the water content, organic matters, total organic carbon, total Kjeldahl nitrogen, carbon-nitrogen ratio and pH of the bean dregs, the straws and the livestock and poultry manure; mixing bean dregs, straws and livestock and poultry manure to obtain a mixed stockpile; putting the mixed compost into a compost box for aerobic composting to obtain a response index of the compost; obtaining the total expected value of the compost by analyzing the response surface of the response index of the compost; obtaining the mixture ratio of the aerobic compost preferably under the condition that the total expected value is larger than the preset total expected threshold value; and (3) adjusting the water content and/or the carbon-nitrogen ratio of the mixed material stack ratio by utilizing the mixed material stack ratio, and carrying out aerobic composting.
Description
Technical Field
The invention belongs to the technical field of organic waste treatment in livestock and poultry industry, and particularly relates to a method for carrying out aerobic composting on livestock and poultry manure added with bean dregs and a compost product.
Background
China is a big country for agricultural production, and produces a large number of grains and a large number of livestock and poultry in a market every year. The large amount of agricultural production also brings a large amount of organic wastes, and the organic wastes are important factors influencing the ecological environment of villages and towns, the appearance of villages and residents and the physical health of residents in China at the present stage.
The composting technology is considered as an important treatment mode for reducing, harmlessly treating, stabilizing and circularly utilizing the livestock and poultry manure. Composting is a process in which microorganisms degrade organic matters, form humus (mainly fulvic acid and humic acid) and humify and tend to be stable. Humus is considered as an important nutrient in compost, which can not only improve the physicochemical properties and biological characteristics of soil, provide nutrients required by crops, but also restore contaminated soil by complexing toxic pollutants in soil. However, the conventional composting process mainly aims at the treatment of garbage, and takes into account that the amount of mineralization and reduction is large, while the quality of the compost product, i.e., the content and the degree of stabilization of humus, are small. The problems can be solved to a certain extent by adding different physical and chemical additives into the compost materials, but the cost of each additive is high, the time and the labor are consumed, and various toxic and harmful substances including heavy metals can be contained, so that the satisfactory effect cannot be achieved.
Disclosure of Invention
In order to solve the technical problems, the present disclosure provides a method for aerobic composting of livestock and poultry manure with bean dregs and a compost product, so as to at least partially solve the technical problems.
In order to solve the technical problem, the technical scheme provided by the disclosure is as follows:
as one aspect of the present disclosure, there is provided a method for aerobic composting of livestock manure to which bean dregs are added, comprising:
measuring the water content, organic matter, total organic carbon, total Kjeldahl nitrogen, carbon-nitrogen ratio and pH of the bean dregs, the straws and the livestock and poultry manure;
mixing the bean dregs, the straw and the livestock and poultry manure to obtain a mixed windrow;
putting the mixed compost into a compost box for aerobic composting to obtain a response index of the compost;
obtaining the total expected value of the compost by analyzing the response surface of the response index of the compost;
obtaining the mixture windrow proportion of the optimal aerobic compost under the condition that the overall expected value is larger than a preset overall expected threshold value;
and (3) adjusting the water content and/or the carbon-nitrogen ratio of the mixed compost ratio by using the mixed compost ratio, and performing aerobic composting.
In one embodiment, the response indicators of the compost include: carbon-nitrogen ratio of starting point and end point, organic matter degradation rate, seed germination rate, pH value, humification index and humification degree.
In one embodiment, the predetermined overall desired threshold is 0.7.
In one embodiment, the mixture ratio of the mixed compost for obtaining the preferred aerobic compost comprises:
the dry weight of the bean dregs is 33.3-16.7%;
the dry weight ratio of the straws is 33.3-16.7%;
the dry weight ratio of the livestock and poultry manure is 66.7-33.3%.
In one embodiment, the carbon-nitrogen ratio in the mixed material mixture ratio is 20-28;
the water content of the mixed stack is 60-70%.
In one embodiment, the bean dregs have the water content of 10-15%, the organic matter of 90-98%, the pH value of 7-8, the total organic carbon of 40-45%, the total Kjeldahl nitrogen of 2.5-3% and the carbon-nitrogen ratio of 14-15.
In one of the embodiments, the first and second electrodes are,
the bean dregs comprise at least one of semen Phaseoli, semen Phaseoli Radiati, semen glycines, and soybean dregs;
the livestock and poultry manure comprises at least one of pig manure, cow manure, sheep manure, horse manure and chicken manure;
the straw comprises: at least one of corn, sugarcane, wheat and rice straw.
In one embodiment, the straw is 2-3cm in length.
In one embodiment, the method further comprises the following steps:
aerobic composting is carried out by adopting a turning mode;
wherein, the compost is turned over once every day for 1 to 5 days; turning the compost once every two days on 6-14 days of composting; turning the compost every 5 days for 15-55 days of composting.
As another aspect, a compost product is provided, which is obtained by using the method of aerobic composting with livestock and poultry manure added with bean dregs in the above embodiment.
Based on the technical scheme, the method for carrying out aerobic composting on livestock and poultry manure added with bean dregs and the compost product provided by the disclosure at least have the following beneficial effects:
(1) the method comprises the steps of establishing a co-composting system of livestock and poultry manure, straw and bean dregs, carrying out material mixing design by a response surface method to obtain an optimal aerobic composting and composting ratio, and carrying out aerobic composting by the composting and composting ratio, so that the condensation and aromatization degrees of humus of the compost are enhanced, and the quality of the compost is enhanced.
(2) The obtained compost raw materials are proportioned to carry out aerobic composting, wherein the bean dregs are used as exogenous precursor organic matters, and the bean dregs are added into the aerobic composting, so that on one hand, sufficient humus precursor substrates are provided for formation of humus, on the other hand, the nutrition and environmental requirements of related functional microorganisms are met, the metabolic activity of the microorganisms is promoted, the enzymatic activity of the microorganisms is enhanced, and the improvement of the flora structure is facilitated. Therefore, the bean dregs are added in the composting process, so that the humification degree of the compost can be enhanced, and the quality of compost products is improved.
(3) In the embodiment of the disclosure, the livestock and poultry manure, the straw and the bean dregs are agricultural production wastes rich in organic matters, and basically do not contain toxic and harmful substances such as heavy metals, and the like, and the mixed use of the livestock and poultry manure, the straw and the bean dregs is beneficial to popularization and use of subsequent compost products, so that the aim of changing waste into valuables is achieved.
Drawings
FIG. 1 is a flow chart of a method for aerobic composting of livestock and poultry manure with bean dregs added in the embodiment of the disclosure;
FIG. 2 is a diagram of different raw material ratios of cow dung-corn stalk-bean dregs by using experimental design software to design a simplex gravity center in the embodiment of the present disclosure;
FIG. 3A is an index graph of response surface of germination rates of seeds of ten mixed windrow aerobic composts with different mixture ratios in the embodiment of the disclosure;
FIG. 3B is an index graph of the response surface of aerobic composting pH of ten mixed windrows of different mix ratios in an embodiment of the disclosure;
FIG. 3C is an index graph of response surfaces of humification indexes of aerobic composts of ten mixed windrows with different mixture ratios in the disclosed embodiment;
FIG. 3D is an index graph of response surface of aerobic composting polymerization degree of ten mixed windrows with different mixture ratios in the disclosed embodiment;
FIG. 3E is a response surface plot of organic matter degradation rates for ten different blending ratios of the mixed windrow aerobic compost in the disclosed example;
FIG. 3F is an index graph of response surface of the ratio of carbon to nitrogen ratio at the end point to the ratio of initial carbon to nitrogen ratio for ten different blending ratios of mixed windrow aerobic composting in the disclosed embodiment;
FIG. 4 is a general expected contour plot for different response indicators in an embodiment of the present disclosure.
Detailed Description
To make the objects, technical solutions and advantages of the present disclosure more apparent, the present disclosure will be described in further detail below with reference to specific embodiments and the accompanying drawings.
The method aims at solving the problems of insufficient thorough decomposition, low humification degree and the like of the current compost, and provides the method for adding the bean dregs into the compost, taking the bean dregs as an exogenous precursor, providing sufficient humus precursor substrate for humus formation, meeting the nutritional and environmental requirements of related functional microorganisms and promoting the metabolic activity of the microorganisms. Meanwhile, in the experimental Design process, a Design Expert software is provided for simplex gravity center Design to select test points, and the optimal aerobic compost mixing and stacking proportion of the livestock manure-straw-bean dreg multi-element composting system is obtained through a material mixing Design test and a response surface analysis method, so that the livestock manure aerobic composting method added with the bean dregs is provided, and aims to strengthen the humification process of composting, increase the yield of humus serving as a good soil conditioner, improve the quality of compost products and promote the resource utilization of agricultural waste biomass.
FIG. 1 is a flow chart of a method for aerobic composting of livestock and poultry manure with bean dregs added in the embodiment of the present disclosure.
As shown in fig. 1, the method for aerobic composting of livestock and poultry manure added with bean dregs of the present disclosure comprises: step S101-step S106.
Step S101: and (3) measuring the water content, organic matters, total organic carbon, total Kjeldahl nitrogen, carbon-nitrogen ratio and pH of the bean dregs, the straws and the livestock and poultry manure.
Step S102: mixing the bean dregs, the straws and the livestock and poultry manure to obtain a mixed stockpile.
Step S103: and putting the mixed compost into a compost box for aerobic composting to obtain the response index of the compost.
Step S104: and (4) obtaining the total expected value of the compost by performing response surface analysis on the response indexes of the compost.
Step S105: obtaining the mixture ratio of the aerobic compost preferably under the condition that the total expected value is larger than the preset total expected threshold value;
step S106: and (3) adjusting the water content and/or the carbon-nitrogen ratio of the mixed compost ratio by using the mixed compost ratio, and carrying out aerobic composting.
In the embodiment of the disclosure, a co-composting system of livestock and poultry manure-straw-bean dregs is established, a mixing design is carried out by a response surface method to obtain an optimal aerobic composting mixed compost proportion, and aerobic composting is carried out according to the mixed compost proportion, so that the condensation and aromatization degree of humus of the compost can be enhanced, and the compost quality is enhanced.
According to an embodiment of the present disclosure, in step S101, the bean dregs include at least one of red beans, mung beans, soybeans, and soybean dregs; wherein the water content of the bean dregs is 10-15%, the organic matter is 90-98%, the pH value is 7-8, the total organic carbon is 40-45%, the total Kjeldahl nitrogen is 2.5-3%, and the carbon-nitrogen ratio is 14-15.
According to an embodiment of the present disclosure, in step S101, the livestock manure includes at least one of pig manure, cow manure, sheep manure, horse manure, and chicken manure; the straw includes: at least one of corn, sugarcane, wheat and rice straw.
It should be noted that bean dregs, straws and livestock and poultry manure of other common beans may be used, and are not limited to the listed bean dregs, straws and livestock and poultry manure.
According to an embodiment of the present disclosure, in step S102, the bean dregs, straw and livestock manure are mixed to obtain a mixed windrow, and the length of the straw is controlled to be 2-3cm before mixing so that it can be uniformly mixed with the bean dregs and livestock manure.
According to the embodiment of the disclosure, in step S103, aerobic composting is performed on livestock and poultry manure, bean dregs and straw, and the terminal carbon-nitrogen ratio/initial carbon-nitrogen ratio (T), organic matter degradation rate (OM Loss), seed germination rate (GI), pH, conductivity (EC), Humification Index (HI), and humus polymerization Degree (DP) are used as compost response indexes, which can comprehensively evaluate compost stability, maturity, nutrient content and the like, and the specific measurement methods of the indexes are as follows:
the detection method of the carbon-nitrogen ratio (C/N) comprises the following steps: the carbon-nitrogen ratio is the ratio of total organic carbon to Kjeldahl nitrogen, wherein the total organic carbon refers to the carbon content of organic matters in the raw material, and the Kjeldahl nitrogen refers to the nitrogen content measured by a Kjeldahl method and comprises organic nitrogen and ammonia nitrogen in the raw material, and is also called total nitrogen. The total organic carbon adopts a potassium dichromate volumetric method (NY/T525-2021); the total nitrogen is digested by concentrated sulfuric acid hydrogen peroxide-Kjeldahl method (NY/T525-2021). Although solid phase C/N is a traditional method and is often used as a classical parameter for evaluating the degree of decomposition, the fact that the C/N of different compost substrates is different and the C/N is simply reduced to a certain value is not reasonable as an index of decomposition of the compost, so that the ratio (T) of the end C/N to the initial C/N of the compost is relatively more illustrative, and the compost is considered to be decomposed when the T value is less than 0.6.
The determination of pH and conductivity (EC) includes: mixing a fresh compost sample with deionized water according to a solid-to-liquid ratio of 1: 10 (w: v), and rotating at a speed of 150 r.min at a temperature of 25 DEG C -1 The mixture is taken out after shaking and leaching for 2 hours in a shaking table and is kept stand. And respectively detecting the pH value and the EC value of the leaching solution by using a pH meter and a conductivity meter.
The determination of water content and organic matter comprises: the organic content was reduced by ignition (HJ 761-2015) by burning the clean crucible in a muffle furnace at 600 ℃ to constant weight (M) 1 ) And recording the weight (M) of the crucible filled with a proper amount of fresh sample 2 ) Then placing the mixture in an electrothermal drying oven at 105 ℃ and drying the mixture to constant weight (M) 3 ) Finally, the mixture is placed in a muffle furnace to be burnt for 3 hours at the temperature of 600 ℃, cooled to room temperature in a drier, and weighed (M) 4 ) Wherein the organic matter content and the water content are shown in the following formulas (1) to (2):
the determination of the germination rate of the seeds comprises the following steps: uniformly placing 10 Chinese cabbage seeds on filter paper of a culture dish, taking 5ml of water extract obtained in the process of measuring the pH value into the culture dish filled with the filter paper, then adding 5ml of deionized water into each culture dish, and wrapping the culture dish by a preservative film to prevent water from evaporating. Placing the culture dish in a light-proof constant-temperature incubator, culturing for 48h in a constant-temperature environment of 25 ℃, determining the number and the root length of germinated seeds, and simultaneously taking 5ml of deionized water as a blank control test, wherein the calculation formula (3) of the germination rate of the seeds is as follows:
wherein GI is seed germinationThe ratio; s. the T Average number of seeds germinated in the experimental group; l is T The average root length of the seeds in the experimental group is mm; sc is the average seed germination number of the control group; lc represents the average root length, mm, of the seeds in the control group.
The humification index and the polymerization degree of the compost are shown in formulas (4) to (5):
humification Index (HI) ═ HA/TOC × 100% (4);
degree of Polymerization (Degree of Polymerization, D) P )＝HA/FA (5)：
Wherein HA is humic acid, FA is fulvic acid, and TOC is total organic carbon.
Determination of fulvic acid and humic acid: compost samples are mixed according to the solid-to-liquid ratio of 1: 10 (w: v) and 0.1 mol.L -1 NaOH and 0.1 mol. L-1 Na 4 P 2 O 7 The mixed solution is evenly mixed and then is heated to 25 ℃ for 150 r.min -1 The mixture is shaken for 24 hours under the condition. At 4000 r.min -1 Centrifuging at rotation speed for 20min, and collecting supernatant containing Humus (HS). With 10% H 2 SO 4 The pH of the supernatant is adjusted to 1 and the supernatant is kept stand for 24 hours. This time precipitated as Humic Acid (HA) and the supernatant as Fulvic Acid (FA). The supernatant was collected after centrifugation and the pellet was washed with 0.05M H 2 SO 4 Washed 3 times and then dissolved in 0.1M sodium hydroxide to give a HA solution.
The content of Total Organic Carbon (TOC) in each component is determined by a potassium dichromate volumetric method.
The humification rate is the ratio of humic acid to total organic carbon content, and the higher the value, the more organic substances in the waste are converted into humus.
The polymerization degree is the ratio of the contents of humic acid and fulvic acid, and the higher the value is, the more complex the structure of the humus is, and the higher the aromaticity is, the more stable the structure of the humus is.
According to the embodiment of the disclosure, in step S104, in order to obtain the preferred mixed compost proportion of the aerobic compost, the response indexes of the compost are subjected to single-factor response surface analysis, the optimization directions of the response values are set by software, and the total expected values of the compost under different proportions can be obtained and plotted into a contour map. The optimization direction for setting each response value by using software may be: the pH value of the compost is close to 7, the response values such as T, GI, HA/TOC, HA/FA, OM Loss and the like are better, and then the 6 indexes are considered, so that the total expected value of the compost under different proportions is obtained.
According to the embodiment of the disclosure, in step S105, in the case that the total expected composting value is greater than the preset total expected threshold value, the mixed compost proportion of the preferable aerobic composting is obtained, wherein the preset total expected threshold value is 0.7.
According to an embodiment of the disclosure, the preferable mixture windrow ratio of the aerobic compost comprises: the dry weight of the bean dregs is 33.3-16.7%; the dry weight ratio of the straws is 33.3-16.7%; the dry weight of the livestock and poultry manure is 66.7-33.3%.
According to the embodiment of the disclosure, in step S106, aerobic composting is performed by adjusting the carbon-nitrogen ratio in the mixed windrow to 20-28 and the water content to 60-70% by using the mixture ratio of the mixed windrow in step S105. In the aerobic composting process, a pile turning mode is adopted, and the pile turning is carried out once every day within 1-5 days of the composting; turning the compost once every two days on 6-14 days of composting; turning the pile every 5 days for 15-55 days of composting to obtain the compost product.
The method for aerobic composting of livestock and poultry manure with added bean dregs and the compost product of the present disclosure are further illustrated by the following specific examples, in which cow manure, corn stalks and bean dregs are used as mixed compost. It should be noted that the following specific examples are given by way of illustration only and the scope of the disclosure is not limited thereto.
Examples
Firstly, the results of the specific physicochemical property tests of the moisture content, organic matter%, Total Organic Carbon (TOC), total kjeldahl nitrogen (KTN), carbon-nitrogen ratio (C/N), and pH of the bean dregs, the straw, and the cow dung are shown in table 1.
TABLE 1 physicochemical Properties of okara, straw and cow dung in the examples of the present disclosure
Secondly, the corn straws, the bean dregs and the cow dung are subjected to simplex gravity center design, different aerobic composts are selected from test points, and a specific mixed compost proportioning test scheme is shown in table 2.
FIG. 2 is a diagram of different raw material ratios of cow dung-corn stalk-bean dregs by using experimental design software to design a simplex gravity center in the embodiment of the present disclosure.
As shown in fig. 2, the numbers in the figure represent the numbers of the different mix-pile proportioning schemes in table 2, i.e. the distribution in the figure is based on the different mix-pile proportioning schemes in table 2.
TABLE 2 mixture ratio of cow dung, corn stalk and bean dregs in the disclosed embodiment
Example 1
The bean dregs, the corn straws and the cow dung are uniformly mixed to obtain a mixed stacking material, wherein the straw (dry weight) accounts for about 33.3%, the cow dung (dry weight) accounts for 33.3%, and the bean dregs (dry weight) accounts for 33.3% (the number 7 in the table 2). In this interval, the C/N ratio of the raw material was about 20, and the water content of the mixed windrow was adjusted to about 60%. Finally, the mixed compost is loaded into a compost box, aerobic composting is carried out in a pile turning mode, and pile turning is carried out once every day on 1-5 days of composting; turning the compost once every two days on 6-14 days of composting; turning the compost once every five days on 15-55 days of composting.
Example 2
The same method as that of example 1 is adopted, and the only difference is that the proportion of the corn straw raw material is changed from 33.3% to 66.7%, the proportion of the cow dung is changed from 33.3% to 16.7%, and the proportion of the bean dregs is changed from 33.3% to 16.7% (the number of the product is 8 in the table 2), and the specific steps are as follows:
and uniformly mixing the three materials to obtain a mixed stacking material, wherein the proportion of the corn straws (dry weight) is about 66.7%, the proportion of the cow dung (dry weight) is about 16.7%, and the proportion of the bean dregs (dry weight) is about 16.7%. In this interval, the C/N ratio of the raw material was about 28, and the water content of the mixed windrow was adjusted to about 60%. Finally, the mixed compost is loaded into a compost box, aerobic composting is carried out in a pile turning mode, and pile turning is carried out once every day on 1-5 days of composting; turning the compost once every two days on the 6 th to 14 th days of the compost; turning the compost once every five days on 15-55 days of composting.
Comparative example
Comparative example A mixed windrow of different proportions of 10 proportions in Table 2 was aerobically composted except for the proportions of 7 (example 1) and 8 (example 2). The procedure of comparative example was the same as that of example 1 except that the compounding ratio of the mixed dough was different.
After the mixed compost with different proportions is uniformly mixed, putting the mixed compost into a compost box for aerobic composting, wherein the response indexes of the obtained composts with different proportions are shown in figures 3A-3F. By performing single-factor response surface analysis on different response indexes in fig. 3A to 3F, the total expected value of the compost under different proportioning conditions can be obtained and plotted as a contour map (fig. 4).
FIG. 4 is a general expected contour plot for different response indicators in an embodiment of the present disclosure.
As shown in FIG. 4, the larger the value on the contour line in the graph represents the higher the expectation value, and the larger the expectation value (the expectation value is less than 1) shows that the composting decomposition index conforms to the optimization direction, and the composting effect is better.
As can be seen from the figures 2-4, when the proportion of two of the three raw materials of the bean dregs, the corn straws and the cow dung is too large or the compost is independently composted, the compost can not reach the standard. In order to obtain the optimal compost proportioning scheme, the expected value of 0.70 is taken as a limit, and a relatively optimal proportioning combination can be obtained: namely, the straw accounts for 66.7-33.3%, the livestock manure accounts for about 33.3-16.7%, and the bean dregs accounts for about 33.3-16.7% (example 1-2), and for the mixed compost of other proportions, the expected values corresponding to the proportions of 8 raw materials are less than 0.7, and the expected values do not reach the expected standard.
Therefore, T and OM L are considered together to obtain high quality compost product o ss、GI、pH、HI、D P The 6 response indexes adopt the method for carrying out aerobic composting by adding the livestock and poultry manure with the bean dregs provided by the disclosure, and the humification degree and the product quality are higherThe compost product of (1).
The above-mentioned embodiments are intended to illustrate the objects, aspects and advantages of the present disclosure in further detail, and it should be understood that the above-mentioned embodiments are only illustrative of the present disclosure and are not intended to limit the present disclosure, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.
Claims (10)
1. A method for carrying out aerobic composting on livestock and poultry manure added with bean dregs comprises the following steps:
measuring the water content, organic matters, total organic carbon, total Kjeldahl nitrogen, carbon-nitrogen ratio and pH of the bean dregs, the straws and the livestock and poultry manure;
mixing bean dregs, straws and livestock and poultry manure to obtain a mixed stockpile;
putting the mixed compost into a compost box for aerobic composting to obtain a response index of the compost;
obtaining the total expected value of the compost by analyzing the response indexes of the compost;
obtaining the mixture ratio of the aerobic compost preferably under the condition that the total expected value is larger than a preset total expected threshold value;
and adjusting the water content and/or the carbon-nitrogen ratio of the mixed compost ratio by using the mixed compost ratio, and carrying out aerobic composting.
2. The method of claim 1, wherein the response indicators of the composting comprise: carbon-nitrogen ratio of starting points and end points, organic matter degradation rate, seed germination rate, pH value, humification index and humification degree.
3. The method of claim 1, wherein the preset overall desired threshold is 0.7.
4. The method of claim 1, wherein the blending of the compost to obtain the preferably aerobic compost comprises:
the dry weight of the bean dregs accounts for 33.3-16.7%;
the dry weight of the straws accounts for 33.3-16.7%;
the dry weight ratio of the livestock and poultry manure is 66.7-33.3%.
5. The method of claim 4, wherein the carbon to nitrogen ratio in the mixed windrow blend ratio is 20-28;
the water content of the mixed stacking material is 60-70%.
6. The method according to claim 1, wherein the moisture content of the bean dregs is 10-15%, the organic matter is 90-98%, the pH is 7-8, the total organic carbon is 40-45%, the total Kjeldahl nitrogen is 2.5-3%, and the carbon-nitrogen ratio is 14-15.
7. The method of claim 1, wherein,
the bean dregs comprise at least one of red beans, mung beans, soybeans and soybean dregs;
the livestock and poultry manure comprises at least one of pig manure, cow manure, sheep manure, horse manure and chicken manure;
the straw comprises: at least one of corn, sugarcane, wheat and rice straw.
8. The method of claim 1 or 7, wherein the straw is 2-3cm in length.
9. The method of claim 1, further comprising:
aerobic composting is carried out by adopting a turning mode;
wherein, the compost is turned over once every day for 1 to 5 days; turning the compost once every two days on 6-14 days of composting; turning the compost every 5 days for 15-55 days of composting.
10. A compost product obtained using the method of any of claims 1-9.
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