Organic fertilizer and preparation method thereof

Abstract

The invention relates to an organic fertilizer and a preparation method thereof, the organic fertilizer is characterized by comprising decomposed sheep manure, molasses liquid and gamma-aminobutyric acid, and the mass ratio of the decomposed sheep manure to the molasses liquid to the gamma-aminobutyric acid is (80-92): (8-20): (0.1-1). The organic fertilizer prepared by the invention is high in yield and good in hardness.

Description

Technical Field

[0001] The invention relates to organic fertilizer and a preparation method thereof. Background Art

[0002] Gansu is located at the intersection of the Loess Plateau, the Inner Mongolia Plateau and the Qinghai-Tibet Plateau. It has rich natural grassland resources and is suitable for the development of animal husbandry. This geographical and climatic condition provides a unique natural environment for sheep breeding. Gansu's sheep industry has a long history and is one of the main sources of income for local residents. Although sheep breeding can provide us with abundant meat and dairy products, it also brings with it the problem of sheep manure disposal. A large amount of sheep manure accumulates and pollutes the environment.

[0003] Sheep manure is a natural organic fertilizer, but it needs to be decomposed before it can be used in agriculture. Currently, the decomposition of sheep manure is basically based on experience, which leads to different fertilizer effects of decomposed sheep manure, that is, there is a problem of unstable quality.

[0004] The decomposed sheep manure is in a loose powdery state, and it is inconvenient to directly spread it as an organic fertilizer. Therefore, the decomposed sheep manure needs to be prepared into granules. However, the decomposed sheep manure contains a large amount of lignin and cellulose, which makes it difficult to granulate. Even if it is granulated reluctantly, it still has the problem of pulverization during storage. In order to solve the problem that the decomposed sheep manure is difficult to granulate and pulverize, a large amount of auxiliary materials are usually needed to be added in the granulation process to assist granulation. The addition of auxiliary materials not only affects the content of organic matter in the organic fertilizer, but also affects the fertilizer effect of the sheep manure. At present, there is no method to reduce the amount of auxiliary materials, and to improve the output of organic fertilizer prepared using sheep manure as raw material and prevent pulverization, and it is required that the method will not affect the content of organic matter in the organic fertilizer, nor will it affect the fertilizer effect of the organic fertilizer. Summary of the invention

[0005] The invention provides an organic fertilizer and a preparation method thereof, and solves the following technical problems: 1) the quality of decomposed sheep manure is unstable and the effect is poor; 2) the amount of auxiliary materials used is reduced, the output of granular organic fertilizer produced by using sheep manure as a raw material is not affected, and the granules are not pulverized; 3) the content of organic matter in the organic fertilizer is not affected, and the fertilizer effect of the sheep manure organic fertilizer is not affected.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: An organic fertilizer comprises decomposed sheep manure, molasses liquid and gamma-aminobutyric acid, wherein the mass ratio of the decomposed sheep manure, molasses liquid and gamma-aminobutyric acid is 80-92:8-20:0.1-1.

[0007] The decomposed sheep manure is carried out according to the following steps: After mixing the sheep manure and the straw, a mixture is obtained; Mix the Jinbaobei starter and bran to obtain the fermentation bacteria; The mixture and the fermentation bacteria are mixed to obtain a pre-pile; The pre-composted materials are aerobically decomposed and, if qualified, are obtained as sheep manure compost; The sugar content of the mixture is 38-41%, the carbon-nitrogen ratio is 24-26:1, and the EC value is 4.2-4.8; the sugar content of the sheep manure compost is 19-24%, the carbon-nitrogen ratio is 13-16:1, and the EC value is 2.8-3.2; the sugar content and carbon-nitrogen ratio are both calculated on a dry basis; the sugar includes monosaccharides and polysaccharides.

[0008] The pH of the organic fertilizer is 6.2-6.8; the solid content of the molasses liquid is 20-45%.

[0009] The straw is crushed straw; the length of the crushed straw is 1 to 3 cm; the mass ratio of the Jinbaobei starter to the bran is 1:9 to 12; the mass ratio of the mixture to the fermentation bacteria is 999 to 999.9:0.1 to 1.

[0010] The aerobic composting is carried out under the premise of maintaining the moisture content of the pre-compost at 55-65%, and the compost needs to be turned three days before composting, with an interval of 4-6 hours. After three days, the compost is turned when the compost temperature reaches 65°C; the aerobic composting condition is pH 6.0-8.5.

[0011] The preparation method of organic fertilizer is carried out according to the following steps: Mix γ-aminobutyric acid and molasses to obtain product A; Product A is added into decomposed sheep manure and mixed evenly, and then granulated, dried and cooled to obtain organic fertilizer.

[0012] The preparation method of organic fertilizer is carried out according to the following steps: Mix γ-aminobutyric acid and molasses to obtain product A; Product A is added into decomposed sheep manure, mixed evenly and the pH value is adjusted. After granulation, drying and cooling, organic fertilizer is obtained.

[0013] The product A is added into the decomposed sheep manure by atomizing the product A into the decomposed sheep manure.

[0014] The invention has the following beneficial technical effects: 1) The quality of the decomposed sheep manure in this application is stable and the effect is good.

[0015] 2) This application detects the sugar content, carbon-nitrogen ratio and EC value in the decomposed sheep manure, and sets the range of sugar content, carbon-nitrogen ratio and EC value in the decomposed sheep manure, so as to make the detection indicators more reasonable. It is applied to large-scale breeding, which can not only quickly detect the decomposition status of the decomposed sheep manure, but also ensure the stability of the fertilizer effect of the decomposed sheep manure.

[0016] 3) In the present application, molasses liquid is added to the decomposed sheep manure as a binder to improve the yield and particle hardness of the organic fertilizer prepared with decomposed sheep manure as raw material. However, molasses has a high viscosity and is not easy to disperse directly in the decomposed sheep manure. The produced particles are large and powdery. Although the yield is improved, it is not satisfactory. After adding γ-aminobutyric acid, the penetration of the molasses liquid can be improved, and it is easy to disperse in the decomposed sheep manure, thereby increasing the granulation yield, and the prepared particles are not easy to pulverize.

[0017] 4) The organic fertilizer prepared in this application has the advantages of high organic matter content and good fertilizer efficiency. DETAILED DESCRIPTION

[0018] In order to better understand the above technical solution, the technical solution of the present invention is described in detail below in conjunction with preferred examples. Example 1

[0019] An organic fertilizer is composed of decomposed sheep manure, urea, molasses liquid and gamma-aminobutyric acid in a mass ratio of 85:5:9.7:0.3.

[0020] The molasses liquid has a solid content of 40%, and the molasses liquid has a solid content of 40%, which is obtained by diluting molasses concentrate (solid content of 54%) with water.

[0021] The preparation method of organic fertilizer is carried out according to the following steps: Mix γ-aminobutyric acid and molasses to obtain product A; Product A and urea are added to decomposed sheep manure and mixed evenly, and then organic fertilizer is obtained after granulation, drying and cooling.

[0022] The product A is added into the decomposed sheep manure by atomizing the product A into the decomposed sheep manure.

[0023] The sheep manure is decomposed according to the following steps: the sheep manure and wheat straw are mixed to obtain a mixture; the Jinbaobei starter and bran are mixed to obtain fermentation bacteria; the mixture and the fermentation bacteria are mixed to obtain a pre-pile, and the pre-pile is aerobically decomposed, and after passing the test, the sheep manure compost is obtained, and the sugar content in the mixture is 39.6%, the carbon-nitrogen ratio is 25.5:1, and the EC value is 4.5; the sheep manure compost test results are that the sugar content is 21.2%, the carbon-nitrogen ratio is 14.7:1, and the EC value is 3.0; the sugar content and the carbon-nitrogen ratio are both calculated on a dry basis.

[0024] The straw is crushed straw; the crushed straw is 1 to 3 cm long; The mass ratio of Gymboree starter and bran is 1:10.

[0025] The aerobic composting is carried out under the premise of maintaining the moisture content of the pre-compost at 58-62%, and the compost needs to be turned three days before composting, with an interval of 5 hours. After three days, the compost is turned when the compost temperature reaches 65°C; the aerobic composting condition is pH 7.5-8.5.

[0026] The mass ratio of the mixture to the fermentation bacteria is 999.8:0.2. Example 2

[0027] An organic fertilizer is prepared by mixing decomposed sheep manure, urea, molasses and gamma-aminobutyric acid in a mass ratio of 85:5:9.7:0.3 and having a pH value of 6.5.

[0028] The molasses liquid has a solid content of 40%, and the molasses liquid has a solid content of 40%, which is obtained by diluting molasses concentrate (solid content of 54%) with water.

[0029] The preparation method of organic fertilizer is carried out according to the following steps: Mix γ-aminobutyric acid and molasses to obtain product A; Product A and urea are added to the decomposed sheep manure, mixed evenly and the pH value is adjusted. After granulation, drying and cooling, the organic fertilizer is obtained.

[0030] The product A is added into the decomposed sheep manure by atomizing the product A into the decomposed sheep manure.

[0031] The sheep manure is decomposed according to the following steps: the sheep manure and wheat straw are mixed to obtain a mixture; the Jinbaobei starter and bran are mixed to obtain fermentation bacteria; the mixture and the fermentation bacteria are mixed to obtain a pre-pile, and the pre-pile is aerobically decomposed, and after passing the test, the sheep manure compost is obtained, and the sugar content in the mixture is 39.6%, the carbon-nitrogen ratio is 25.5:1, and the EC value is 4.5; the sheep manure compost test results are that the sugar content is 21.2%, the carbon-nitrogen ratio is 14.7:1, and the EC value is 3.0; the sugar content and the carbon-nitrogen ratio are both calculated on a dry basis.

[0032] The straw is crushed straw; the crushed straw is 1 to 3 cm long; The mass ratio of Gymboree starter and bran is 1:10.

[0033] The aerobic composting is carried out under the premise of maintaining the moisture content of the pre-compost at 58-62%, and the compost needs to be turned three days before composting, with an interval of 5 hours. After three days, the compost is turned when the compost temperature reaches 65°C; the aerobic composting condition is pH 7.5-8.5.

[0034] The mass ratio of the mixture to the fermentation bacteria is 999.8:0.2. Example 3

[0035] An organic fertilizer is composed of decomposed sheep manure, urea, molasses liquid and gamma-aminobutyric acid in a mass ratio of 82.5:5:12:0.5.

[0036] The pH is 6.4.

[0037] The molasses liquid has a solid content of 40%, and the molasses liquid has a solid content of 40%, which is obtained by diluting molasses concentrate (solid content of 54%) with water.

[0038] The preparation method of organic fertilizer is carried out according to the following steps: Mix γ-aminobutyric acid and molasses to obtain product A; Product A is added into decomposed sheep manure and mixed evenly, and then granulated, dried and cooled to obtain organic fertilizer.

[0039] Mix γ-aminobutyric acid and molasses to obtain product A; Product A and urea are added to the decomposed sheep manure, mixed evenly and the pH value is adjusted. After granulation, drying and cooling, the organic fertilizer is obtained.

[0040] The product A is added into the decomposed sheep manure by atomizing the product A into the decomposed sheep manure.

[0041] The sheep manure is decomposed according to the following steps: the sheep manure and wheat straw are mixed to obtain a mixture; the Jinbaobei starter and bran are mixed to obtain fermentation bacteria; the mixture and the fermentation bacteria are mixed to obtain a pre-pile, and the pre-pile is aerobically decomposed, and after qualified detection, sheep manure compost is obtained, characterized in that the sugar content in the mixture is 40.4%, the carbon-nitrogen ratio is 26.5:1, and the EC value is 4.3; the sheep manure compost detection result is that the sugar content is 22.6%, the carbon-nitrogen ratio is 14.5:1, and the EC value is 2.9; the sugar content and the carbon-nitrogen ratio are both measured on a dry basis.

[0042] The straw is crushed straw; the crushed straw is 1 to 3 cm long; The mass ratio of Gymboree starter culture to bran is 1:11.

[0043] The aerobic composting is carried out under the premise of maintaining the moisture content of the pre-compost at 57-62%, and the compost needs to be turned three days before composting, with an interval of 4 hours. After three days, the compost is turned when the compost temperature reaches 65°C; the aerobic composting condition is pH 7.5-8.5.

[0044] The mass ratio of the mixture to the fermentation bacteria is 999.7:0.3. Example 4

[0045] An organic fertilizer is composed of decomposed sheep manure, ammonium sulfate, molasses liquid and gamma-aminobutyric acid in a mass ratio of 80:10:9:1.

[0046] The pH is 6.7.

[0047] The molasses liquid has a solid content of 40%, and the molasses liquid has a solid content of 40%, which is obtained by diluting molasses concentrate (solid content of 54%) with water.

[0048] The preparation method of organic fertilizer is carried out according to the following steps: Mix γ-aminobutyric acid and molasses to obtain product A; Add product A and ammonium sulfate to decomposed sheep manure, mix well and adjust the pH value. After granulation, drying and cooling, organic fertilizer is obtained.

[0049] The product A is added into the decomposed sheep manure by atomizing the product A into the decomposed sheep manure.

[0050] The sheep manure is decomposed according to the following steps: the sheep manure and corn stalks are mixed to obtain a mixture; the Jinbaobei starter and bran are mixed to obtain fermentation bacteria; the mixture and the fermentation bacteria are mixed to obtain a pre-pile, and the pre-pile is aerobically decomposed, and sheep manure compost is obtained after passing the test, and the sugar content in the mixture is 40.2%, the carbon-nitrogen ratio is 25.4:1, and the EC value is 4.4; the sheep manure compost test results are that the sugar content is 21.0%, the carbon-nitrogen ratio is 15.1:1, and the EC value is 2.9; the sugar content and the carbon-nitrogen ratio are both calculated on a dry basis.

[0051] The straw is crushed straw; the crushed straw is 1 to 3 cm long; The mass ratio of Gymboree starter and bran is 1:10.

[0052] The aerobic composting is carried out under the premise of maintaining the moisture content of the pre-compost at 58-65%, and the compost needs to be turned three days before composting, with an interval of 6 hours. After three days, the compost is turned when the compost temperature reaches 65°C; the aerobic composting condition is pH 7.0-8.5.

[0053] The mass ratio of the mixture to the fermentation bacteria is 999.5:0.5. Example 5

[0054] An organic fertilizer is prepared from decomposed sheep manure, monoammonium phosphate, molasses and gamma-aminobutyric acid in a mass ratio of 83.6:4:12:0.4.

[0055] The pH value is 6.5; the solid content of the molasses liquid is 42%, and the molasses liquid with a solid content of 42% is obtained by diluting molasses concentrate (solid content 54%) with water.

[0056] The preparation method of organic fertilizer is carried out according to the following steps: Mix γ-aminobutyric acid and molasses to obtain product A; Product A is added into decomposed sheep manure, mixed evenly and the pH value is adjusted. After granulation, drying and cooling, organic fertilizer is obtained.

[0057] The product A is added into the decomposed sheep manure by atomizing the product A into the decomposed sheep manure.

[0058] The sheep manure is decomposed according to the following steps: sheep manure, corn straw and wheat straw are mixed to obtain a mixture; Jinbaobei starter and bran are mixed to obtain fermentation bacteria; the mixture and the fermentation bacteria are mixed to obtain a pre-pile, and the pre-pile is aerobically decomposed. After passing the test, sheep manure compost is obtained, and the sugar content in the mixture is 40.5%, the carbon-nitrogen ratio is 25.3:1, and the EC value is 4.5; the sheep manure compost test results are that the sugar content is 21.2%, the carbon-nitrogen ratio is 14.4:1, and the EC value is 2.9; the sugar content and the carbon-nitrogen ratio are both calculated on a dry basis.

[0059] The straw is crushed straw; the crushed straw is 1 to 3 cm long; The mass ratio of Gymboree starter to bran is 1:12.

[0060] The aerobic composting is carried out under the premise of maintaining the moisture content of the pre-compost at 58-62%, and the compost needs to be turned three days before composting, with an interval of 5 hours. After three days, the compost is turned when the compost temperature reaches 65°C; the aerobic composting condition is pH 7.0-8.5.

[0061] The mass ratio of the mixture to the fermentation bacteria is 999.4:0.6.

[0062] The Jinbaobei starter in the above examples was purchased from Beijing Huaxia Kangyuan Technology Co., Ltd.

[0063] The beneficial effects of the present invention are further illustrated below in conjunction with test data: Experiment 1 1.1 Experimental location: a goat breeding farm in Dongquan Township, Zhang County, Dingxi City, Gansu Province.

[0064] 1.2 Experimental tests: sugar content (%), carbon-nitrogen ratio, EC value in the mixture and sugar content (%), carbon-nitrogen ratio and EC value in the compost, seed germination index (GI) (%).

[0065] 1.3 Test samples: Comparison 1 (except that the Jinbaobei fermentation agent was replaced by the organic fertilizer decomposition agent purchased from Beihai Qiangxing Biotechnology Co., Ltd., the other implementation methods were consistent with Example 1, and the composting days were the same. In terms of proportion, the sugar content (%), carbon-nitrogen ratio, and EC value in the mixture were consistent with those in Example 1, and the compost sugar content was 22.1%, the carbon-nitrogen ratio was 15.1:1, and the EC value was 3.1, which was close to the data in Example 1), Comparison 2 (except that the Jinbaobei fermentation agent was replaced by the EM bacteria purchased from Shandong Wanyang Biotechnology Co., Ltd., the other implementation methods were consistent with Example 1, and the composting days were the same. In terms of proportion, the sugar content (%), carbon-nitrogen ratio, and EC value in the mixture were consistent with those in Example 1. , EC value is consistent with Example 1, the sugar content of the compost is 21.6%, the carbon-nitrogen ratio is 14.9:1, and the EC value is 3.1, which is close to the data in Example 1), Comparison 3 (except that the sugar content in the mixture is 32.4%, the carbon-nitrogen ratio is 27.3:1, the EC value is 4.9, the sugar content in the compost is 18.4%, the carbon-nitrogen ratio is 16.9:1, and the EC value is 3.4, all others are consistent with Example 1), Comparison 4 (except that the sugar content in the sheep manure compost is 26.4%, the carbon-nitrogen ratio is 14.9, and the EC value is 3.2, all others are consistent with Example 1, including the data of the mixture), and decomposed sheep manure prepared in Example 1, Example 3 and Example 4.

[0066] 1.4 Experimental methods: Sugar content was detected by the phenol-sulfuric acid method; organic carbon was detected by the potassium dichromate volumetric method; nitrogen was detected by the Kjeldahl method; EC value was determined by the dilution method; seed germination index (GI) was carried out in accordance with the NY / T 505-2021 standard. The seeds used in the GI test were cucumber seeds and cabbage seeds, respectively, with 20 cucumber seeds and 20 cabbage seeds corresponding to each treatment.

[0067] Except for the experimental treatment, other operations were the same in this experiment.

[0068] Note: Cabbage seeds and cucumber seeds have different sensitivities, so their germination indexes are different. Cabbage is relatively more sensitive.

[0069] Regarding the decomposed sheep dung data of Comparison 1 and Comparison 2, due to the different selected strains, the decomposed sheep dung data can only be controlled to be consistent as much as possible, but cannot be completely consistent. Therefore, there is a slight difference between the decomposed sheep dung data of Comparison 1, Comparison 2 and Example 1.

[0070] 2 Results and analysis Sugar content, carbon-nitrogen ratio, EC value in the mixture, sugar content, carbon-nitrogen ratio and EC value in the compost, and seed germination index (GI) (%) are shown in Table 1 Table 1

[0071] From the data comparison of Comparison 1, Comparison 2 and Example 1 in Table 1, it can be seen that the effects of decomposed sheep manure prepared by different fermentation bacteria agents are not the same under the premise of meeting the detection indicators formulated in this application, that is, the selection of fermentation bacteria agents affects the use effect of this application. In the test of GI applied to cucumber, although there is a gap between Comparison 1 and Comparison 2 and this application, the gap is obviously not as good as that applied to cabbage, that is, cabbage has strong sensitivity, that is, Comparison 1 and Comparison 2 are applied to less sensitive crops, but the effect is not satisfactory when applied to sensitive crops.

[0072] It can be seen from the data comparison of Comparison 3, Comparison 4 and Example 1 that Comparison 3 is the sugar content (%), carbon-nitrogen ratio, EC value in the mixture and the sugar (%), carbon-nitrogen ratio and EC value in the compost, which are all different from those specified in the present application. Comparison 3 is the sugar (%), carbon-nitrogen ratio, and EC value in the mixture are the same as those in Example 1, but the sugar content (%) in the decomposed sheep manure exceeds the detection value range set in the present application, and the carbon-nitrogen ratio and EC value are within the detection value range set in the present application. Finally, the decomposed sheep manure prepared by Comparison 3 and Comparison 4 is also different from that prepared in Example 1 of the present application in terms of effect. In the test of GI applied to cucumber, although there is a gap between Comparison 3 and Comparison 4 and the present application, the gap is obviously not as good as that applied to cabbage, that is, cabbage is highly sensitive, that is, Comparison 3 and Comparison 4 are applied to less sensitive crops. The effect is okay, but the effect is not satisfactory when applied to sensitive crops.

[0073] In summary, the selection of fermentation strains, the material ratio in the mixture, and the setting of detection indicators in the decomposed sheep manure will all affect the effect of the prepared decomposed sheep manure.

[0074] Test 2 1.1 Test location: 50,000 tons / year organic fertilizer production line in Dingxi City, Gansu Province.

[0075] 1.2 Experimental tests: shift yield (tons / 8h), hardness (N), powder degree (%) and seed germination index (GI) (%).

[0076] 1.3 Test samples: Comparison 1 (except that molasses and γ-aminobutyric acid were not added, all other methods were consistent with Example 1), Comparison 2 (except that molasses was added but γ-aminobutyric acid was not added, all other implementation methods were consistent with Example 1), Comparison 3 (except that γ-aminobutyric acid was added but molasses was not added, all other implementation methods were consistent with Example 1), and organic fertilizers prepared in Example 1, Example 2, Example 3, and Example 4.

[0077] 1.4 Experimental method: The class yield was measured by weighing method; the hardness was tested by particle hardness meter; the degree of pulverization was distributed by sieving; the seed germination index (GI) (%) was carried out in accordance with NY / T 505-2021 standard. The seeds used in the GI test were cucumber seeds and cabbage seeds, and each treatment corresponded to 20 cucumber seeds and 20 cabbage seeds, respectively.

[0078] Powdering degree detection method: fill the produced organic fertilizer into bags, each bag weighs 40kg, and stack them 20 high. After stacking for one month, take the second to last bag. The two-person platform is 1.2 meters high. Let go of the bag at the same time to let it fall freely. Pour out the organic fertilizer and weigh it, recorded as m1. Open the bag, pour out the organic fertilizer, and use a 2-4mm sieve to sieve the organic fertilizer. Weigh the particles smaller than 2mm under the sieve, recorded as m2. Powdering degree = m2 / m1*100%.

[0079] Note: Cabbage seeds and cucumber seeds have different sensitivities, so their germination indexes are different. Cabbage is relatively more sensitive.

[0080] 2 Results and analysis The results of shift yield (tons / 8h), hardness (N), powder degree (%) and seed germination index (GI) (%) are shown in Table 2. Table 2

[0081] Note: Comparison 1 was stopped after only one shift due to low production, with a total production of 15.7 tons.

[0082] From the data comparison of Comparison 1, Comparison 2, Comparison 3 and Example 1, it can be seen that the simultaneous addition of molasses liquid and γ-aminobutyric acid can increase the yield and hardness of granular organic fertilizer with decomposed sheep manure as raw material, reduce the degree of pulverization, and improve its use effect.

[0083] From the data comparison of Example 1, Example 2, Example 3 and Example 4, it can be seen that different pH values ​​of organic fertilizers have an impact on the yield, particle hardness and pulverization degree of organic fertilizers, but have little effect on fertilizer efficiency.

Claims

1. An organic fertilizer, characterized in that: The invention comprises decomposed sheep manure, molasses liquid and gamma-aminobutyric acid, wherein the mass ratio of the decomposed sheep manure, molasses liquid and gamma-aminobutyric acid is 80-92:8-20:0.1-1.

2. The organic fertilizer according to claim 1, wherein The decomposed sheep manure is carried out according to the following steps: After mixing the sheep manure and the straw, a mixture is obtained; Mix the Jinbaobei starter and bran to obtain the fermentation bacteria; The mixture and the fermentation bacteria are mixed to obtain a pre-pile; The pre-composted materials are aerobically decomposed and, if qualified, are obtained as sheep manure compost; The sugar content of the mixture is 38-41%, the carbon-nitrogen ratio is 24-26:1, and the EC value is 4.2-4.8; the sugar content of the sheep manure compost is 19-24%, the carbon-nitrogen ratio is 13-16:1, and the EC value is 2.8-3.2; the sugar content and carbon-nitrogen ratio are both calculated on a dry basis; the sugar includes monosaccharides and polysaccharides.

3. The organic fertilizer according to claim 2, wherein The pH of the organic fertilizer is 6.2-6.8; the solid content of the molasses liquid is 20-45%.

4. The organic fertilizer as claimed in claim 2 or 3, characterized in that The straw is crushed straw; the length of the crushed straw is 1 to 3 cm; the mass ratio of the Jinbaobei starter to the bran is 1:9 to 12; the mass ratio of the mixture to the fermentation bacteria is 999 to 999.9:0.1 to 1.

5. The organic fertilizer as claimed in claim 2 or 3, characterized in that: The aerobic composting is carried out under the premise of maintaining the moisture content of the pre-compost at 55-65%, and the compost needs to be turned three days before composting, with an interval of 4-6 hours. After three days, the compost is turned when the compost temperature reaches 65°C; the aerobic composting condition is pH 6.0-8.

5.

6. The method for preparing an organic fertilizer as claimed in any one of claims 1 to 5, characterized in that: Follow these steps: Mix γ-aminobutyric acid and molasses to obtain product A; Product A is added into decomposed sheep manure and mixed evenly, and then granulated, dried and cooled to obtain organic fertilizer.

7. The method for preparing organic fertilizer as claimed in claim 6, wherein: Follow these steps: Mix γ-aminobutyric acid and molasses to obtain product A; Product A is added into decomposed sheep manure, mixed evenly and the pH value is adjusted. After granulation, drying and cooling, organic fertilizer is obtained.

8. The method for preparing organic fertilizer as claimed in claim 6 or 7, characterized in that: The product A is added into the decomposed sheep manure by atomizing the product A into the decomposed sheep manure.

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