Compound fertilizer based on coconut fiber and preparation method thereof

Abstract

The invention belongs to the technical field of agriculture, and relates to a coconut fiber-based compound fertilizer and a preparation method thereof. According to the invention, the algae powder is rich in trace elements and plant growth regulators, so that the growth of plants is promoted and the stress resistance is improved; the coffee grounds are matched to increase soil permeability and provide a nitrogen source; the insect excrement can improve the soil fertility; the shell powder can provide calcium and other minerals and improve the soil structure; and the coconut fiber can improve the air permeability and drainage of the soil and reduce the irrigation frequency.

Description

Technical Field

[0001] The invention belongs to the technical field of agriculture and relates to a composite fertilizer based on coconut shell fiber and a preparation method thereof. Background Art

[0002] In modern agricultural production, traditional fertilizers are widely used due to their significant yield-increasing effects, and they play a key role in increasing crop yields. However, as time goes by, the negative impacts of these fertilizers on soil quality and the ecological environment have increasingly attracted people's attention. On the one hand, long-term and large-scale application of chemical fertilizers will lead to problems such as deterioration of soil structure, decreased fertility, and reduced microbial activity; on the other hand, elements such as nitrogen and phosphorus in chemical fertilizers are easily lost with water, causing environmental pollution problems such as eutrophication of water bodies.

[0003] Especially in arid and semi-arid areas, water resources are scarce, and traditional agricultural models often require frequent irrigation to maintain crop growth, which not only significantly increases agricultural production costs, but also exacerbates over-exploitation and waste of water resources. In order to meet this challenge, many researchers and farmers have begun to explore more sustainable agricultural practices, such as adopting water-saving irrigation techniques, planting drought-resistant crop varieties, and using organic fertilizers to replace some chemical fertilizers. These practices help reduce dependence on chemical fertilizers and effectively improve soil health, thereby achieving a balance between efficient resource utilization and environmental protection. Through comprehensive management strategies and technological innovations, the environmental burden of traditional fertilizers can be gradually reduced and the sustainable development of agricultural production can be promoted. Summary of the invention

[0004] The object of the present invention is to solve the above problems in the prior art and to provide a composite fertilizer based on coconut shell fiber which can provide nutrients required by plants and reduce irrigation requirements.

[0005] The purpose of the present invention can be achieved through the following technical scheme: a composite fertilizer based on coconut shell fiber, the composite fertilizer comprises the following raw materials in parts by mass: 50-150 parts of coconut shell fiber, 40-60 parts of algae powder, 20-50 parts of insect feces, 10-30 parts of coffee grounds, and 5-15 parts of shell powder.

[0006] In the above-mentioned coconut shell fiber-based compound fertilizer, the compound fertilizer includes the following raw materials in parts by mass: 80-100 parts of coconut shell fiber, 50-60 parts of algae powder, 20-30 parts of insect feces, 10-20 parts of coffee grounds, and 5-10 parts of shell powder.

[0007] Coconut shell, as a natural plant fiber, has excellent water retention capacity, which makes it an ideal fertilizer substrate. The present invention combines a variety of other eco-friendly fertilizer raw materials, such as algae powder, insect feces, coffee grounds and shell powder, to prepare an efficient compound fertilizer. This fertilizer can not only effectively improve the soil structure, but also significantly improve the comprehensive effect of fertilizers. By reducing the number of irrigations, precious water resources can be saved, and soil fertility can be improved, promoting the sustainable development of agricultural production.

[0008] Algae powder is a product processed from seaweed. It is rich in trace elements and plant growth regulators, which can promote plant growth and development and enhance plant resistance.

[0009] Coffee grounds are rich in organic matter and nitrogen, which can increase soil aeration and provide essential nutrients for plants.

[0010] Insect droppings are an excellent source of organic fertilizer that can increase soil fertility and improve the physical properties of the soil.

[0011] Oyster shell powder contains high concentrations of calcium and other minerals that help regulate soil pH and improve soil structure.

[0012] Coconut shell fiber itself has good air permeability and drainage, which can help the soil maintain proper moisture and reduce unnecessary irrigation times.

[0013] The invention scientifically combines these components to effectively improve soil structure, increase soil water retention and air permeability, and provide comprehensive nutrition to meet the needs of crops at different growth stages. In addition, by reducing the number of irrigation times, the fertilizer also helps to alleviate water resource pressure in arid areas and reduce agricultural production costs.

[0014] In the above-mentioned coconut shell fiber-based compound fertilizer, the algae powder is seaweed that is dried and then ground into powder.

[0015] In the above-mentioned coconut shell fiber-based compound fertilizer, the insect feces is a mixture of bee feces and fly maggot feces in a mass ratio of 1: (0.5-1.5).

[0016] In the above-mentioned coconut shell fiber-based compound fertilizer, the shell powder is oyster shell powder.

[0017] The present invention also provides a method for preparing the above-mentioned coconut shell fiber-based composite fertilizer, which comprises the following steps: the method comprises the following steps: subjecting coffee grounds to high-temperature carbonization treatment, then mixing them with seaweed powder, insect feces, shell powder and coconut shell fiber, and finally subjecting them to anaerobic composting treatment.

[0018] In the above-mentioned preparation method of a composite fertilizer based on coconut shell fiber, the high temperature carbonization treatment temperature is 400-500°C and the time is 1-3 hours. The coffee grounds after high temperature carbonization become carbonized organic matter, which can increase the content of soil organic matter while improving soil fertility, promote soil microbial activity, and enhance the stability of organic matter, making it more suitable as a fertilizer.

[0019] In the above-mentioned method for preparing a composite fertilizer based on coconut shell fiber, the anaerobic composting treatment temperature is 50-70°C and the time is 40-55 days. High temperature treatment can kill pathogens in compost materials, improve the sanitary safety of compost, and convert organic matter into humus more quickly and fully, improving the nutritional content of fertilizers. Too high a temperature (>70°C) will cause nitrogen loss in the compost, leading to the death of microorganisms, reducing fertilizer quality and causing environmental pollution (methane and ammonia). Too low a temperature (<50°C) cannot effectively disinfect pathogenic microorganisms in the compost, reducing the safety of the fertilizer, and will also lead to incomplete fermentation, affecting the quality and stability of the fertilizer.

[0020] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention utilizes the excellent water retention capacity of coconut shell fiber combined with eco-friendly raw materials such as algae powder, insect feces, coffee grounds and shell powder to prepare a highly efficient compound fertilizer.

[0021] 2. The present invention utilizes algae powder which is rich in trace elements and plant growth regulators, which helps to promote plant growth and improve stress resistance; coffee grounds can increase soil permeability and provide a nitrogen source; insect feces can improve soil fertility; shell powder can provide calcium and other minerals and improve soil structure; and coconut shell fiber can improve soil aeration and drainage and reduce irrigation frequency.

[0022] 3. The composite fertilizer based on coconut shell fiber of the present invention can not only effectively improve soil structure and fertility, but also significantly enhance the comprehensive effect of fertilizer. By reducing the number of irrigation times, the fertilizer helps to save precious water resources, reduce agricultural production costs, and promote the sustainable development of agricultural production; 4. The coconut shell fiber-based compound fertilizer of the present invention can enhance the nutrient supply capacity of the soil and improve the nutrient absorption rate of plants, thereby promoting the healthy growth of plants and increasing crop yields. DETAILED DESCRIPTION

[0023] The following are specific embodiments of the present invention, which further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0024] Embodiment 1:

[0025] S1. Prepare the following raw materials by weight: 95 parts of coconut shell fiber, 55 parts of algae powder, 23 parts of insect feces, 18 parts of coffee grounds, and 8 parts of shell powder; S2, carbonizing the coffee grounds at 450°C for 2h; S3, then mixed with seaweed powder, insect feces, shell powder and coconut shell fiber, and finally subjected to anaerobic composting at 50℃ for 45 days.

[0026] Embodiment 2:

[0027] S1. Prepare the following raw materials by weight: 80 parts of coconut shell fiber, 50 parts of algae powder, 20 parts of insect feces, 10 parts of coffee grounds, and 5 parts of shell powder; S2, carbonizing the coffee grounds at 450°C for 2h; S3, then mixed with seaweed powder, insect feces, shell powder and coconut shell fiber, and finally subjected to anaerobic composting at 50℃ for 45 days.

[0028] Embodiment 3:

[0029] S1. Prepare the following raw materials by weight: 100 parts of coconut shell fiber, 60 parts of algae powder, 30 parts of insect feces, 20 parts of coffee grounds, and 10 parts of shell powder; S2, carbonizing the coffee grounds at 450°C for 2h; S3, then mixed with seaweed powder, insect feces, shell powder and coconut shell fiber, and finally subjected to anaerobic composting at 50℃ for 45 days.

[0030] Embodiment 4:

[0031] The only difference from Example 1 is that the coffee grounds are not subjected to high-temperature carbonization.

[0032] Embodiment 5:

[0033] The only difference from Example 1 is that the anaerobic composting temperature is 30°C.

[0034] Embodiment 6:

[0035] The only difference from Example 1 is that the anaerobic composting treatment temperature is 100°C.

[0036] Comparative Example 1: The difference from Example 1 is that algae powder is not contained, and the rest is the same as Example 1.

[0037] Comparative Example 2: The difference from Example 1 is that it does not contain insect feces, and the rest is the same as Example 1.

[0038] Comparative Example 3: The difference from Example 1 is that coffee grounds are not contained, and the rest is the same as Example 1.

[0039] Comparative Example 4: The difference from Example 1 is that shell powder is not contained, and the rest is the same as Example 1.

[0040] Comparative Example 5: The difference from Example 1 is that coconut shell fiber is not contained, and the rest is the same as Example 1.

[0041] Taking the soil in Beilun District, Ningbo City, Zhejiang Province as an example, the compound fertilizers prepared in Examples 1-6 and Comparative Examples 1-5 were added to corn soil sieved through a 2mm sieve at a mass ratio of 2%, and the experiment was conducted in a greenhouse. Before the experiment, the dried seeds were soaked for 1 day in advance to promote seed water absorption and germination, and then placed in a warm, humid and ventilated environment for germination. After that, the seeds with white buds were transferred to soil with different fertilizers, and an equal and appropriate amount of water was added. The effects of different compound fertilizers in Examples 1-6 and Comparative Examples 1-5 on soil fertility were determined. After 14 days of cultivation, the soil moisture retention and other conditions in each culture pot were analyzed.

[0042] Table 1: Statistical results of soil moisture retention and other conditions of the compound fertilizers prepared in Examples 1-6 and Comparative Examples 1-5 in each culture pot after 14 days of cultivation

[0043] In summary, the compound fertilizer of the present invention can significantly increase the organic carbon content of the soil and improve the physical and chemical properties of the soil, such as enhancing the fertility and structural stability of the soil. The implementation of the fertilizer can effectively increase the growth rate of crops and improve the nutritional content and quality of the plants. In addition, it converts a variety of agricultural by-products and waste into fertilizers, reduces resource waste, improves resource utilization efficiency, reduces dependence on chemical fertilizers, reduces soil and water pollution, and is in line with the development direction of sustainable agriculture.

[0044] The parts of the embodiments herein that are not exhaustive of the midpoint values ​​of the technical scope claimed for protection by the present invention and the new technical solutions formed by equivalent replacement of single or multiple technical features in the technical solutions of the embodiments are also within the scope claimed for protection by the present invention; at the same time, in all the listed or unlisted embodiments of the scheme of the present invention, each parameter in the same embodiment merely represents an example of its technical solution (i.e., a feasible solution), and there is no strict coordination and limitation relationship between the parameters, wherein the parameters can be replaced with each other without violating the axioms and the claims of the present invention, unless otherwise stated.

[0045] The technical means disclosed in the scheme of the present invention are not limited to the technical means disclosed in the above technical means, but also include technical schemes composed of any combination of the above technical features. The above is a specific implementation of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications are also regarded as the protection scope of the present invention.

[0046] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A composite fertilizer based on coconut shell fiber, characterized in that: The compound fertilizer comprises the following raw materials in parts by weight: 50-150 parts of coconut shell fiber, 40-60 parts of algae powder, 20-50 parts of insect excrement, 10-30 parts of coffee grounds, and 5-15 parts of shell powder.

2. A composite fertilizer based on coconut shell fiber according to claim 1, characterized in that: The compound fertilizer comprises the following raw materials in parts by weight: 80-100 parts of coconut shell fiber, 50-60 parts of algae powder, 20-30 parts of insect excrement, 10-20 parts of coffee grounds, and 5-10 parts of shell powder.

3. A composite fertilizer based on coconut shell fiber according to claim 1 or 2, characterized in that: Algae powder is seaweed that is dried and ground into powder.

4. A composite fertilizer based on coconut shell fiber according to claim 1 or 2, characterized in that: Insect feces is a mixture of bee feces and fly maggot feces in a mass ratio of 1:(0.5-1.5).

5. A composite fertilizer based on coconut shell fiber according to claim 1 or 2, characterized in that: Shell powder is oyster shell powder.

6. A method for preparing a composite fertilizer based on coconut shell fiber as claimed in claim 1 or 2, characterized in that: The method comprises the following steps: subjecting coffee grounds to high-temperature carbonization treatment, then mixing them with seaweed powder, insect excrement, shell powder and coconut shell fiber, and finally subjecting them to anaerobic composting treatment.

7. The method for preparing a composite fertilizer based on coconut shell fiber according to claim 5, characterized in that: The high temperature carbonization treatment temperature is 400-500°C and the time is 1-3h.

8. The method for preparing a composite fertilizer based on coconut shell fiber according to claim 5, characterized in that: The anaerobic composting treatment temperature is 50-70℃ and the time is 40-55 days.

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