Organic fertilizer containing high-yield urease inhibitor and preparation method thereof

Abstract

The invention provides an organic fertilizer containing a high-yield urease inhibitor and a preparation method thereof, and belongs to the technical field of organic fertilizers. The organic fertilizer comprises corn straw, rice husk, livestock and poultry manure, bentonite, calcium superphosphate, plant ash, distillers' grains, humic acid, sawdust, sodium selenite, sodium alginate, a urease inhibitor, a mixture of rice chaff and husk, biogas residue, shell powder and borax. The urease inhibitor adopted by the invention can change oxidation-reduction conditions of a micro-ecological environment in soil, reduce the activity of soil urea, reduce the water solubility of urea, slow down the hydrolysis rate of urea, and disrupt the metabolic pathway of microorganisms capable of generating urease, so that the pathway for synthesizing urease is blocked, the distribution density of urease in soil is reduced, and the soil quality is improved. The decomposition speed of urea is slowed down. In addition, humic acid, sodium selenite, sodium alginate and other components are added, so that the content of trace elements is supplemented. The fertilizer is comprehensive in nutrition supply and more remarkable in crop production promotion.

Description

Technical Field

[0001] The invention relates to the technical field of organic fertilizers, in particular to an organic fertilizer containing a high-yield urease inhibitor and a preparation method thereof. Background Art

[0002] Organic fertilizer refers to organic matter mainly derived from plants and animals, which is applied to the soil after biochemical treatment to provide plant nutrition as a carbon-containing material. Organic fertilizers include human feces, manure, compost, green manure, cake fertilizer, biogas fertilizer, etc., which are characterized by a wide variety, wide sources, and long fertilizer effects. Common sources of organic fertilizers include: animal and plant residues: such as crop straw (straw left after the harvest of crops such as wheat, corn, and rice), dead branches and leaves, and forage grass; animal excrement: such as livestock and poultry manure (chicken, duck, pig, cattle, sheep, etc.), earthworm manure, etc.; urban organic waste: such as kitchen waste, urban sludge, etc.

[0003] Urease inhibitors refer to a class of chemical agents that can inhibit the activity of urease in the soil and delay the hydrolysis of urea. Soil urease is a specific hydrolase in the soil that can catalyze the hydrolysis of urea. The mechanism of urease inhibitors controlling urea hydrolysis mainly has two aspects: one is that its oxidation reduces the activity of urease; the other is that it competes for ligands to reduce the activity of urease. Several special fertilizers containing slow-release nitrogen fertilizers such as hydroquinone and dicyandiamide have been promoted and applied to a certain area. Urease inhibitors can also be used as ruminant feed additives, which can effectively reduce the ammonia content in the air in poultry houses, improve the environment, and increase the efficiency of nitrogen utilization by animals. In the prior art, the nutrient supply of conventional organic fertilizers is not comprehensive enough, and the role of promoting the growth of crops needs to be improved. In this case, how to improve the effectiveness of organic fertilizers has always been a technical problem that needs to be solved in this field. Summary of the invention

[0004] The technical problem to be solved by the present invention is: how to provide an organic fertilizer with stronger nutrient supply capacity and more significant promotion effect on crop growth.

[0005] In order to achieve the above technical objectives, the present invention adopts the following technical solutions: An organic fertilizer containing a high-yield urease inhibitor comprises the following ingredients: corn stalks, rice husks, livestock and poultry manure, bentonite, superphosphate, plant ash, wine lees, humic acid, sawdust, sodium selenite, sodium alginate, urease inhibitor, rice bran, biogas residue, shell powder and borax.

[0006] Preferably, the organic fertilizer comprises the following ingredients in parts by weight: 20-26 parts of corn stalks, 15-18 parts of rice husks, 12-17 parts of livestock and poultry manure, 6-8 parts of bentonite, 0.2-0.5 parts of superphosphate, 2-4 parts of wood ash, 3-5 parts of wine grains, 1-1.5 parts of humic acid, 2-4 parts of sawdust, 0.5-0.8 parts of sodium selenite, 0.3-0.7 parts of sodium alginate, 0.4-0.6 parts of urease inhibitor, 3-6 parts of bran, 4-5 parts of biogas residue, 1-3 parts of shell powder, and 2-3 parts of borax.

[0007] Preferably, the organic fertilizer comprises the following ingredients in parts by weight: 22-24 parts of corn stalks, 16-17 parts of rice husks, 14-15 parts of livestock and poultry manure, 7-7.5 parts of bentonite, 0.3-0.4 parts of superphosphate, 2.5-3.5 parts of wood ash, 3.6-4.4 parts of wine grains, 1.2-1.4 parts of humic acid, 2.5-3 parts of sawdust, 0.6-0.8 parts of sodium selenite, 0.4-0.6 parts of sodium alginate, 0.4-0.5 parts of urease inhibitor, 3.5-5 parts of bran, 4.2-4.8 parts of biogas residue, 2-2.7 parts of shell powder, and 2.3-2.6 parts of borax.

[0008] Preferably, the organic fertilizer comprises the following ingredients in parts by weight: 23 parts of corn stalks, 16.5 parts of rice husks, 14.5 parts of livestock and poultry manure, 7.2 parts of bentonite, 0.36 parts of superphosphate, 3 parts of wood ash, 4 parts of wine grains, 1.3 parts of humic acid, 2.7 parts of sawdust, 0.7 parts of sodium selenite, 0.5 parts of sodium alginate, 0.45 parts of urease inhibitor, 4.2 parts of rice bran, 4.5 parts of biogas residue, 2.4 parts of shell powder, and 2.5 parts of borax.

[0009] Preferably, the organic fertilizer also includes 0.2-0.4 parts by weight of aspartic acid.

[0010] Preferably, the organic fertilizer also includes 0.8 to 1.5 parts by weight of calcium ammonium nitrate.

[0011] Preferably, the organic fertilizer also includes 0.1 to 0.3 parts by weight of casein.

[0012] Preferably, the organic fertilizer further comprises 0.5-0.9 parts by weight of green algae powder.

[0013] Preferably, the organic fertilizer is composed of the following ingredients in parts by weight: 23 parts of corn stalks, 16.5 parts of rice husks, 14.5 parts of livestock and poultry manure, 7.2 parts of bentonite, 0.36 parts of superphosphate, 3 parts of wood ash, 4 parts of wine lees, 1.3 parts of humic acid, 2.7 parts of sawdust, 0.7 parts of sodium selenite, 0.5 parts of sodium alginate, 0.45 parts of urease inhibitor, 4.2 parts of bran, 4.5 parts of biogas residue, 2.4 parts of shell powder, 2.5 parts of borax, 0.3 parts of aspartic acid, 1 part of calcium ammonium nitrate, 0.2 parts of casein, and 0.7 parts of green algae powder.

[0014] On the basis of the above technical scheme, the present invention further provides a preparation method of the above organic fertilizer, comprising the following steps: drying a formula amount of corn stalks, rice husks, sawdust, and bran to a moisture content of 10% to 15%, then crushing to 50 mesh, mixing, and maintaining in an ultrasonic oscillation environment (ultrasonic oscillation frequency maintained at 40kHz to 70kHz) for 2 to 3 hours to obtain a mixture; dissolving a formula amount of superphosphate, humic acid, sodium selenite, sodium alginate, and urease inhibitor in water, spraying them on the surface of the mixture, and stirring evenly; mixing a formula amount of livestock and poultry manure, wine lees, and biogas residue evenly, adding a formula amount of shell powder and borax, mixing with the stirred materials, adjusting the humidity to 20% to 25%, mixing in a formula amount of bentonite and wood ash, and then granulating to obtain the organic fertilizer.

[0015] The present invention uses corn stalks, rice husks, livestock and poultry manure, bentonite, superphosphate, plant ash, wine lees, humic acid, sawdust, sodium selenite, sodium alginate, urease inhibitor, bran, biogas residue, shell powder, and borax to construct an organic fertilizer containing a high-yield urease inhibitor. Although the components of this technical solution are relatively complex, the technical effect of the present invention is obtained by this, so the essential characteristics of the present invention are concentrated in the above component solution. This is hereby explained.

[0016] The present invention provides an organic fertilizer containing a high-yield urease inhibitor and a preparation method thereof. The technical solution uses corn stalks and rice husks as main components, not only providing a comprehensive source of nutrition, but also the plant fiber has good structurality, can effectively improve the ventilation, and increase the soil moisture retention capacity; at the same time, a certain amount of livestock and poultry manure is added, which is rich in organic matter and mineral elements, and provides initial microorganisms. In addition, the urease inhibitor used in the present invention can change the redox conditions of the microecological environment in the soil, reduce the activity of soil urea, reduce the water solubility of urea, slow down the hydrolysis rate of urea, and disrupt the metabolic pathway of microorganisms that can produce urease, so that the pathway of synthesizing urease is blocked, thereby reducing the distribution density of urease in the soil and slowing down the decomposition rate of urea. In addition, the present invention adds humic acid, sodium selenite, sodium alginate and other ingredients to supplement the content of trace elements. The present invention has comprehensive nutrient supply and more significant promotion of crop production. DETAILED DESCRIPTION

[0017] The specific embodiments of the present invention will be described in detail below. In order to avoid too much unnecessary details, the well-known structures or functions will not be described in detail in the following examples. The approximate language used in the following examples can be used for quantitative expression, indicating that the quantity can be allowed to have a certain change without changing the basic function. Unless otherwise defined, the technical and scientific terms used in the following examples have the same meaning as those generally understood by those skilled in the art to which the present invention belongs.

[0018] Example 1 An organic fertilizer containing a high-yield urease inhibitor comprises the following ingredients in parts by weight: 20 parts of corn stalks, 15 parts of rice husks, 12 parts of livestock and poultry manure, 6 parts of bentonite, 0.2 parts of superphosphate, 2 parts of plant ash, 3 parts of wine lees, 1 part of humic acid, 2 parts of sawdust, 0.5 parts of sodium selenite, 0.3 parts of sodium alginate, 0.4 parts of urease inhibitor, 3 parts of rice bran, 4 parts of biogas residue, 1 part of shell powder and 2 parts of borax. Its preparation method is as follows: the corn stalks, rice husks, sawdust and bran of the formula are aired to a moisture content of 10%, and then crushed to 50 meshes, mixed, and kept in an ultrasonic oscillation environment for 2 hours to obtain a mixture; the superphosphate, humic acid, sodium selenite, sodium alginate and urease inhibitor of the formula are dissolved in water, sprayed on the surface of the mixture, and stirred evenly; the livestock and poultry manure, vinasse and biogas residue of the formula are mixed evenly, shell powder and borax of the formula are added, mixed with the materials after stirring, the humidity is adjusted to 20%, bentonite and plant ash of the formula are mixed, and then granulated to obtain the organic fertilizer. For the organic fertilizer of the present embodiment, it is detected that its organic matter content is 68.53%, the total nitrogen content is 435.7g / kg, the available nitrogen content is 222.9g / kg, the available phosphorus content is 88.4g / kg, and the available potassium content is 105.8g / kg. The organic fertilizer of this embodiment was applied to the cultivated soil. After 6 days, soil samples were taken and tomato seeds that had been soaked and germinated were sown therein. The germination rate on 10 days and the physiological indicators of the seedlings on 30 days were calculated: the germination rate on 10 days was 96.5%, the fresh weight of the seedlings per plant on 30 days was 15.4 g, and the root volume of the seedlings per plant on 30 days was 2.58 cm 3 , the number of root tips per seedling on day 30 was 21, and the chlorophyll content of the seedling on day 30 was 2.54 mg / g.

[0019] Example 2 An organic fertilizer containing a high-yield urease inhibitor is characterized in that the organic fertilizer comprises the following ingredients in parts by weight: 26 parts of corn stalks, 18 parts of rice husks, 17 parts of livestock and poultry manure, 8 parts of bentonite, 0.5 parts of superphosphate, 4 parts of plant ash, 5 parts of wine lees, 1.5 parts of humic acid, 4 parts of sawdust, 0.8 parts of sodium selenite, 0.7 parts of sodium alginate, 0.6 parts of urease inhibitor, 6 parts of rice bran, 5 parts of biogas residue, 3 parts of shell powder, and 3 parts of borax. Its preparation method is as follows: the corn stalks, rice husks, sawdust and bran of the formula are aired to a moisture content of 15%, and then crushed to 50 meshes, mixed, and kept for 3 hours in an ultrasonic oscillation environment to obtain a mixture; the superphosphate, humic acid, sodium selenite, sodium alginate and urease inhibitor of the formula are dissolved in water, sprayed on the surface of the mixture, and stirred evenly; the livestock and poultry manure, vinasse and biogas residue of the formula are mixed evenly, shell powder and borax of the formula are added, mixed with the materials after stirring, the humidity is adjusted to 25%, bentonite and plant ash of the formula are mixed, and then granulated to obtain the organic fertilizer. For the organic fertilizer of the present embodiment, it is detected that its organic matter content is 66.28%, the total nitrogen content is 414.2g / kg, the available nitrogen content is 208.4g / kg, the available phosphorus content is 84.7g / kg, and the available potassium content is 101.2g / kg. The organic fertilizer of this embodiment was applied to the cultivated soil. After 6 days, soil samples were taken and tomato seeds that had been soaked and germinated were sown therein. The germination rate on 10 days and the physiological indicators of the seedlings on 30 days were calculated: the germination rate on 10 days was 97.3%, the fresh weight of the seedlings per plant on 30 days was 15.1 g, and the root volume of the seedlings per plant on 30 days was 2.44 cm 3 The number of root tips per seedling on day 30 was 19, and the chlorophyll content of the seedling on day 30 was 2.30 mg / g.

[0020] Example 3 An organic fertilizer containing a high-yield urease inhibitor, the organic fertilizer comprises the following components in parts by weight: 22 parts of corn stalks, 16 parts of rice husks, 14 parts of livestock and poultry manure, 7 parts of bentonite, 0.3 parts of superphosphate, 2.5 parts of plant ash, 3.6 parts of wine lees, 1.2 parts of humic acid, 2.5 parts of sawdust, 0.6 parts of sodium selenite, 0.4 parts of sodium alginate, 0.4 parts of urease inhibitor, 3.5 parts of bran, 4.2 parts of biogas residue, 2 parts of shell powder, and 2.3 parts of borax. For the organic fertilizer of this embodiment, the organic matter content is detected to be 63.85%, the total nitrogen content is 419.2 g / kg, the available nitrogen content is 203.6 g / kg, the available phosphorus content is 90.2 g / kg, and the available potassium content is 109.1 g / kg. The organic fertilizer of this embodiment was applied to the cultivated soil. After 6 days, soil samples were taken and tomato seeds that had been soaked and germinated were sown therein. The germination rate on 10 days and the physiological indicators of the seedlings on 30 days were calculated: the germination rate on 10 days was 98.2%, the fresh weight of the seedlings per plant on 30 days was 15.7 g, and the root volume of the seedlings per plant on 30 days was 2.61 cm 3, the number of root tips per seedling on day 30 was 20, and the chlorophyll content of the seedling on day 30 was 2.77 mg / g.

[0021] Example 4 An organic fertilizer containing a high-yield urease inhibitor, the organic fertilizer comprises the following components in parts by weight: 24 parts of corn stalks, 17 parts of rice husks, 15 parts of livestock and poultry manure, 7.5 parts of bentonite, 0.4 parts of superphosphate, 3.5 parts of plant ash, 4.4 parts of wine lees, 1.4 parts of humic acid, 3 parts of sawdust, 0.8 parts of sodium selenite, 0.6 parts of sodium alginate, 0.5 parts of urease inhibitor, 5 parts of bran, 4.8 parts of biogas residue, 2.7 parts of shell powder, and 2.6 parts of borax. For the organic fertilizer of this embodiment, the organic matter content is detected to be 64.75%, the total nitrogen content is 435.7 g / kg, the available nitrogen content is 239.1 g / kg, the available phosphorus content is 85.0 g / kg, and the available potassium content is 110.3 g / kg. The organic fertilizer of this embodiment was applied to the cultivated soil. After 6 days, soil samples were taken and tomato seeds that had been soaked and germinated were sown therein. The germination rate on 10 days and the physiological indicators of the seedlings on 30 days were calculated: the germination rate on 10 days was 97.9%, the fresh weight of the seedlings per plant on 30 days was 14.2 g, and the root volume of the seedlings per plant on 30 days was 2.23 cm 3 , the number of root tips per seedling on day 30 was 18, and the chlorophyll content of the seedling on day 30 was 2.26 mg / g.

[0022] Example 5 An organic fertilizer containing a high-yield urease inhibitor, the organic fertilizer comprises the following components in parts by weight: 23 parts of corn stalks, 16.5 parts of rice husks, 14.5 parts of livestock and poultry manure, 7.2 parts of bentonite, 0.36 parts of superphosphate, 3 parts of plant ash, 4 parts of lees, 1.3 parts of humic acid, 2.7 parts of sawdust, 0.7 parts of sodium selenite, 0.5 parts of sodium alginate, 0.45 parts of urease inhibitor, 4.2 parts of bran, 4.5 parts of biogas residue, 2.4 parts of shell powder, and 2.5 parts of borax. For the organic fertilizer of this embodiment, the organic matter content is detected to be 72.88%, the total nitrogen content is 446.1 g / kg, the available nitrogen content is 236.9 g / kg, the available phosphorus content is 95.2 / kg, and the available potassium content is 117.4 g / kg. The organic fertilizer of this embodiment was applied to the cultivated soil. After 6 days, soil samples were taken and tomato seeds that had been soaked and germinated were sown therein. The germination rate on 10 days and the physiological indicators of the seedlings on 30 days were calculated: the germination rate on 10 days was 99.5%, the fresh weight of the seedlings per plant on 30 days was 16.8 g, and the root volume of the seedlings per plant on 30 days was 2.83 cm 3 , the number of root tips per seedling on day 30 was 23, and the chlorophyll content of the seedling on day 30 was 2.79 mg / g.

[0023] Example 6 An organic fertilizer containing a high-yield urease inhibitor, the organic fertilizer comprising the following components in parts by weight: 23 parts of corn stalks, 16.5 parts of rice husks, 14.5 parts of livestock and poultry manure, 7.2 parts of bentonite, 0.36 parts of superphosphate, 3 parts of plant ash, 4 parts of wine lees, 1.3 parts of humic acid, 2.7 parts of sawdust, 0.7 parts of sodium selenite, 0.5 parts of sodium alginate, 0.45 parts of urease inhibitor, 4.2 parts of rice bran, 4.5 parts of biogas residue, 2.4 parts of shell powder, 2.5 parts of borax, 0.3 parts of aspartic acid, 1 part of calcium ammonium nitrate, 0.2 parts of casein, and 0.7 parts of green algae powder. The organic fertilizer of this embodiment was tested to have an organic matter content of 74.20%, a total nitrogen content of 450.0 g / kg, an available nitrogen content of 245.4 g / kg, an available phosphorus content of 96.4 g / kg, and an available potassium content of 111.2 g / kg. The organic fertilizer of this embodiment was applied to the cultivated soil, and soil samples were taken after 6 days of maintenance. Soil samples were then sown into the soil after soaking and germination. The germination rate on 10 days and the physiological indexes of the seedlings on 30 days were calculated: the germination rate on 10 days was 99.9%, the fresh weight of the seedlings per plant on 30 days was 17.5 g, and the root volume of the seedlings per plant on 30 days was 2.93 cm 3 , the number of root tips per seedling on day 30 was 23, and the chlorophyll content of the seedling on day 30 was 2.89 mg / g.

[0024] Comparative Example 1 Organic fertilizer products produced by Shijiazhuang Fuming Biological Organic Fertilizer Co., Ltd. For the organic fertilizer of this embodiment, the organic matter content was detected to be 51.35%, the total nitrogen content was 328.4g / kg, the available nitrogen content was 186.1g / kg, the available phosphorus content was 72.1g / kg, and the available potassium content was 79.3g / kg. The organic fertilizer of this embodiment was applied to the cultivated soil, and soil samples were taken after keeping it for 6 days. The tomato seeds that had been soaked and germinated were sown therein, and the germination rate on 10 days and the physiological indicators of the seedlings on 30 days were counted: the germination rate on 10 days was 91.4%, the fresh weight of the seedlings per plant on 30 days was 13.3g, and the root volume of the seedlings per plant on 30 days was 2.10cm 3 , the number of root tips per seedling on day 30 was 15, and the chlorophyll content of the seedling on day 30 was 2.11 mg / g.

[0025] Comparative Example 2 Organic fertilizer products produced by Shandong Yishunfa Chemical Co., Ltd. For the organic fertilizer of this embodiment, the organic matter content was detected to be 49.77%, the total nitrogen content was 351.4g / kg, the available nitrogen content was 191.9g / kg, the available phosphorus content was 75.6g / kg, and the available potassium content was 88.3g / kg. The organic fertilizer of this embodiment was applied to the cultivated soil, and soil samples were taken after 6 days. The tomato seeds that had been soaked and germinated were sown therein, and the germination rate on 10 days and the physiological indicators of the seedlings on 30 days were counted: the germination rate on 10 days was 92.7%, the fresh weight of the seedlings per plant on 30 days was 13.1g, and the root volume of the seedlings per plant on 30 days was 2.22cm 3 , the number of root tips per seedling on day 30 was 16, and the chlorophyll content of the seedling on day 30 was 2.35 mg / g.

[0026] Comparative Example 3 Based on the composition of the organic fertilizer in Example 1, urease inhibitors were removed. For the organic fertilizer in this example, the organic matter content was detected to be 67.26%, the total nitrogen content was 412.3 g / kg, the available nitrogen content was 224.5 g / kg, the available phosphorus content was 86.8 g / kg, and the available potassium content was 107.1 g / kg. The organic fertilizer in this example was applied to the cultivated soil, and soil samples were taken after keeping it for 6 days. Tomato seeds that had been soaked and germinated were sown therein, and the germination rate on 10 days and the physiological indicators of the seedlings on 30 days were counted: the germination rate on 10 days was 90.2%, the fresh weight of the seedlings per plant on 30 days was 12.2 g, and the root volume of the seedlings per plant on 30 days was 2.15 cm 3 , the number of root tips per seedling on day 30 was 16, and the chlorophyll content of the seedling on day 30 was 2.29 mg / g.

[0027] The embodiments of the present invention are described in detail above, but the contents are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the scope of the present invention shall be included in the protection scope of the present invention.

Claims

1. An organic fertilizer containing a high-yield urease inhibitor, characterized in that Includes the following ingredients: corn straw, rice husk, livestock and poultry manure, bentonite, superphosphate, wood ash, wine grains, humic acid, sawdust, sodium selenite, sodium alginate, urease inhibitors, rice bran, biogas residue, shell powder, and borax.

2. The organic fertilizer containing a high-yield urease inhibitor according to claim 1, characterized in that: The organic fertilizer comprises the following ingredients in parts by weight: 20-26 parts of corn stalks, 15-18 parts of rice husks, 12-17 parts of livestock and poultry manure, 6-8 parts of bentonite, 0.2-0.5 parts of superphosphate, 2-4 parts of wood ash, 3-5 parts of wine lees, 1-1.5 parts of humic acid, 2-4 parts of sawdust, 0.5-0.8 parts of sodium selenite, 0.3-0.7 parts of sodium alginate, 0.4-0.6 parts of urease inhibitor, 3-6 parts of rice bran, 4-5 parts of biogas residue, 1-3 parts of shell powder and 2-3 parts of borax.

3. The organic fertilizer containing a high-yield urease inhibitor according to claim 2, characterized in that: The organic fertilizer comprises the following ingredients in parts by weight: 22-24 parts of corn stalks, 16-17 parts of rice husks, 14-15 parts of livestock and poultry manure, 7-7.5 parts of bentonite, 0.3-0.4 parts of superphosphate, 2.5-3.5 parts of wood ash, 3.6-4.4 parts of wine lees, 1.2-1.4 parts of humic acid, 2.5-3 parts of sawdust, 0.6-0.8 parts of sodium selenite, 0.4-0.6 parts of sodium alginate, 0.4-0.5 parts of urease inhibitor, 3.5-5 parts of rice bran, 4.2-4.8 parts of biogas residue, 2-2.7 parts of shell powder and 2.3-2.6 parts of borax.

4. The organic fertilizer containing a high-yield urease inhibitor according to claim 3, characterized in that: The organic fertilizer comprises the following ingredients in parts by weight: 23 parts of corn stalks, 16.5 parts of rice husks, 14.5 parts of livestock and poultry manure, 7.2 parts of bentonite, 0.36 parts of superphosphate, 3 parts of wood ash, 4 parts of wine lees, 1.3 parts of humic acid, 2.7 parts of sawdust, 0.7 parts of sodium selenite, 0.5 parts of sodium alginate, 0.45 parts of urease inhibitor, 4.2 parts of rice bran, 4.5 parts of biogas residue, 2.4 parts of shell powder and 2.5 parts of borax.

5. The organic fertilizer containing a high-yield urease inhibitor according to claim 3, characterized in that: The organic fertilizer also includes 0.2-0.4 parts by weight of aspartic acid.

6. The organic fertilizer containing a high-yield urease inhibitor according to claim 3, characterized in that: The organic fertilizer also includes 0.8-1.5 parts by weight of calcium ammonium nitrate.

7. The organic fertilizer containing a high-yield urease inhibitor according to claim 3, characterized in that: The organic fertilizer also includes 0.1-0.3 parts by weight of casein.

8. The organic fertilizer containing a high-yield urease inhibitor according to claim 3, characterized in that: The organic fertilizer also includes 0.5-0.9 parts by weight of green algae powder.

9. The organic fertilizer containing a high-yield urease inhibitor according to claim 3, characterized in that: The organic fertilizer is composed of the following ingredients in parts by weight: 23 parts of corn stalks, 16.5 parts of rice husks, 14.5 parts of livestock and poultry manure, 7.2 parts of bentonite, 0.36 parts of superphosphate, 3 parts of wood ash, 4 parts of wine lees, 1.3 parts of humic acid, 2.7 parts of sawdust, 0.7 parts of sodium selenite, 0.5 parts of sodium alginate, 0.45 parts of urease inhibitor, 4.2 parts of rice bran, 4.5 parts of biogas residue, 2.4 parts of shell powder, 2.5 parts of borax, 0.3 parts of aspartic acid, 1 part of calcium ammonium nitrate, 0.2 parts of casein and 0.7 parts of green algae powder.

10. The method for preparing an organic fertilizer according to any one of claims 1 to 9, characterized in that: The method comprises the following steps: drying a formulated amount of corn stalks, rice husks, sawdust and bran until the moisture content is 10% to 15%, then crushing to 50 meshes, mixing, and keeping in an ultrasonic oscillation environment for 2 to 3 hours to obtain a mixture; dissolving a formulated amount of superphosphate, humic acid, sodium selenite, sodium alginate and urease inhibitor in water, spraying the mixture on the surface of the mixture, and stirring evenly; mixing a formulated amount of livestock and poultry manure, wine lees and biogas residue evenly, adding a formulated amount of shell powder and borax, mixing with the stirred materials, adjusting the humidity to 20% to 25%, mixing in a formulated amount of bentonite and plant ash, and then granulating to obtain the organic fertilizer.