Coated organic slow-release compound fertilizer and preparation method thereof

Abstract

The invention discloses a coated organic slow-release compound fertilizer and a preparation method thereof, and the coated organic slow-release compound fertilizer comprises the following components: 65-80 parts of cow dung, 25-30 parts of a chemical fertilizer, 5-10 parts of straw, 15-20 parts of urea, 6-12 parts of calcium superphosphate, 7-15 parts of potassium sulfate, 0.5-2 parts of an insecticide, and 10-30 parts of poultry blood. The compound fertilizer prepared by the method has balanced components, and has the advantages of reducing chemical fertilizer consumption, increasing chemical fertilizer utilization rate, improving agricultural product quality, protecting environment and serving as production means of green food.

Description

Technical Field

[0001] This invention relates to the field of fertilizer production-related products, specifically a coated organic slow-release compound fertilizer and its preparation method. Background Art

[0002] Current fertilizers are mainly mixtures of macro-elements, micro-elements, and additives. They contain low levels of micro-elements, are not slow-release fertilizers, have poor efficacy, a narrow range of applications, and are suitable for a limited variety of crops. In recent years, with the increasing application of compound fertilizers in production, the unreasonable formulation and improper use of compound fertilizers have become increasingly prominent.

[0003] However, existing compound fertilizers are insufficient in fertility, do not significantly increase yield, and do not have insecticidal effects, making it difficult to meet market demand. Summary of the Invention

[0004] The purpose of this invention is to provide a coated organic slow-release compound fertilizer and its preparation method, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a coated organic slow-release compound fertilizer, comprising the following components: 65-80 parts cow manure, 25-30 parts chemical fertilizer, 5-10 parts straw, 15-20 parts urea, 6-12 parts superphosphate, 7-15 parts potassium sulfate, 0.5-2 parts insecticide, and 10-30 parts poultry blood.

[0006] Preferably, the product comprises the following components: 65 parts cow manure, 25 parts chemical fertilizer, 5 parts straw, 15 parts urea, 6 parts superphosphate, 7 parts potassium sulfate, 0.5 parts insecticide, and 10 parts poultry blood.

[0007] The preferred composition includes the following ingredients: 80 parts cow manure, 30 parts chemical fertilizer, 10 parts straw, 20 parts urea, 12 parts superphosphate, 15 parts potassium sulfate, 2 parts insecticide, and 30 parts poultry blood.

[0008] Preferably, the product comprises the following components: 70 parts cow manure, 20 parts chemical fertilizer, 8 parts straw, 17 parts urea, 8 parts superphosphate, 8 parts potassium sulfate, 1 part insecticide, and 20 parts poultry blood.

[0009] A method for preparing a coated organic slow-release compound fertilizer includes the following steps:

[0010] Step 1: Crush dried cow dung, pesticide, and straw, then add chemical fertilizer and mix thoroughly.

[0011] Step 2: Introduce the mixture from Step 1 into the urea solution, mix thoroughly, control the temperature at 70℃, and place it in a fermentation tank for heat preservation, moisture retention, and oxygen supply for fermentation.

[0012] Step 3: After fermentation, the material is transferred to the silo, granulated by a cutter, shaped by a disc granulator, and then sent to a two-stage negative pressure dryer to cool and obtain organic granules.

[0013] Step 4: Mix potassium sulfate, superphosphate, and poultry blood in proportion, convey to a drum, spray granulation, dry, cool, and screen, and coat the surface of the particles with a water-soluble polymer semi-permeable membrane to obtain inorganic particles.

[0014] Step 5: Mix and package the organic granules prepared in Step 3 and the inorganic granules prepared in Step 3 to produce compound microbial fertilizer.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] This coated organic slow-release compound fertilizer and its preparation method produce a compound fertilizer with balanced components, which has the advantages of reducing fertilizer usage, improving fertilizer utilization, improving the quality of agricultural products, protecting the environment, and serving as a green food production material. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0018] One embodiment of the present invention is a coated organic slow-release compound fertilizer and its preparation method, comprising the following components: 65-80 parts cow manure, 25-30 parts chemical fertilizer, 5-10 parts straw, 15-20 parts urea, 6-12 parts superphosphate, 7-15 parts potassium sulfate, 0.5-2 parts insecticide, and 10-30 parts poultry blood.

[0019] In this embodiment, the following components are included: 65 parts cow manure, 25 parts chemical fertilizer, 5 parts straw, 15 parts urea, 6 parts superphosphate, 7 parts potassium sulfate, 0.5 parts insecticide, and 10 parts poultry blood.

[0020] Working principle: Step 1, dry cow dung, pesticide, and straw are crushed and then mixed with chemical fertilizer.

[0021] Step 2: Introduce the mixture from Step 1 into the urea solution, mix thoroughly, control the temperature at 70℃, and place it in a fermentation tank for heat preservation, moisture retention, and oxygen supply for fermentation.

[0022] Step 3: After fermentation, the material is transferred to the silo, granulated by a cutter, shaped by a disc granulator, and then sent to a two-stage negative pressure dryer to cool and obtain organic granules.

[0023] Step 4: Mix potassium sulfate, superphosphate, and poultry blood in proportion, convey to a drum, spray granulation, dry, cool, and screen, and coat the surface of the particles with a water-soluble polymer semi-permeable membrane to obtain inorganic particles.

[0024] Step 5: Mix and package the organic granules prepared in Step 3 and the inorganic granules prepared in Step 3 to produce compound microbial fertilizer.

[0025] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

Claims

1. A coated organic slow-release compound fertilizer, characterized in that: It consists of the following ingredients: 65-80 parts cow manure, 25-30 parts chemical fertilizer, 5-10 parts straw, 15-20 parts urea, 6-12 parts superphosphate, 7-15 parts potassium sulfate, 0.5-2 parts insecticide, and 10-30 parts poultry blood.

2. The coated organic slow-release compound fertilizer according to claim 1, characterized in that: It consists of the following ingredients: 65 parts cow manure, 25 parts chemical fertilizer, 5 parts straw, 15 parts urea, 6 parts superphosphate, 7 parts potassium sulfate, 0.5 parts insecticide, and 10 parts poultry blood.

3. The coated organic slow-release compound fertilizer according to claim 1, characterized in that: It consists of the following ingredients: 80 parts cow manure, 30 parts chemical fertilizer, 10 parts straw, 20 parts urea, 12 parts superphosphate, 15 parts potassium sulfate, 2 parts insecticide, and 30 parts poultry blood.

4. The coated organic slow-release compound fertilizer according to claim 1, characterized in that: It consists of the following ingredients: 70 parts cow manure, 20 parts chemical fertilizer, 8 parts straw, 17 parts urea, 8 parts superphosphate, 8 parts potassium sulfate, 1 part insecticide, and 20 parts poultry blood.

5. The method for preparing a coated organic slow-release compound fertilizer according to claim 1, comprising the following steps: Step 1: Crush dried cow dung, pesticide, and straw, then add chemical fertilizer and mix thoroughly. Step 2: Introduce the mixture from Step 1 into the urea solution, mix thoroughly, control the temperature at 70℃, and place it in a fermentation tank for heat preservation, moisture retention, and oxygen supply for fermentation. Step 3: After fermentation, the material is transferred to the silo, granulated by a cutter, shaped by a disc granulator, and then sent to a two-stage negative pressure dryer to cool and obtain organic granules. Step 4: Mix potassium sulfate, superphosphate, and poultry blood in proportion, convey to a drum, spray granulation, dry, cool, and screen, and coat the surface of the particles with a water-soluble polymer semi-permeable membrane to obtain inorganic particles. Step 5: Mix and package the organic granules prepared in Step 3 and the inorganic granules prepared in Step 3 to produce compound microbial fertilizer.