Slow-release type fertilization equipment for organic planting
By designing a ring-shaped slow-release component and a layered slow-release element, the problems of low water and fertilizer utilization and poor fertilizer uniformity in organic farming are solved, achieving precise coverage and uniform release of water and fertilizer, and improving the efficiency and quality of organic farming.
Patent Information
- Application Number
- CN202511739887.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-25
- Publication Date
- 2026-02-13
AI Technical Summary
Existing fertilization equipment is insufficient to meet the long-term, uniform, and low-concentration water and fertilizer requirements of organic farming, resulting in low water and fertilizer utilization, poor fertilizer uniformity, and inaccurate root coverage.
It employs at least two slow-release components that can be spliced into a circular structure, including an annular slow-release box, inner and outer protective nets, a fixing base, and layered slow-release elements, forming an annular cavity. This, in conjunction with a liquid storage unit, enables the uniform release of water and fertilizer, adapting to the distribution of plant roots.
It improves water and fertilizer utilization, ensures uniform fertilization in the root zone, reduces planting costs, and meets the requirements of organic farming for no chemical residues and no soil pollution.
Smart Images
Figure CN121511862A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of fertilizer application equipment technology, specifically slow-release fertilizer application equipment for organic farming. Background Technology
[0002] In the field of organic farming, plants (especially fruit trees and cash crops) have core requirements for water and fertilizer that are "long-term, uniform, and low-concentration," and must strictly adhere to the planting standards of "no chemical residues and no soil pollution." However, existing fertilization equipment and technologies have many shortcomings and are difficult to adapt to the special needs of organic farming. Specific problems are as follows: 1. Shortcomings of traditional fertilization methods: The fertilization methods commonly used in current organic farming are mainly "manual application of organic fertilizer" and "furrow irrigation application of organic liquid fertilizer", which have significant defects. The water and fertilizer utilization rate is low. The spread organic fertilizer is easily washed away by rainwater, and the liquid fertilizer applied by irrigation cannot be absorbed by the roots in the deep soil due to its rapid penetration. The overall water and fertilizer utilization rate is generally less than 30%, which results in a serious waste of organic fertilizer (such as well-rotted manure and humic acid fertilizer) and increases planting costs. 2. Poor uniformity of fertilizer supply: Manual operation makes it difficult to achieve "precise coverage of the root area", which easily leads to problems such as "excessive concentration near the root burns the root, and insufficient concentration far from the root causes nutrient deficiency", resulting in uneven growth of new shoots and large differences in fruit coloring, affecting yield and quality. 3. Existing equipment is mostly of the "single-point columnar" or "linear strip" structure, which cannot match the "radial root system" of fruit trees and other plants, resulting in a misalignment between the slow-release range and the root absorption zone, and a decrease in fertilizer supply efficiency. Summary of the Invention
[0003] In view of the problems in the prior art, the present invention provides a slow-release fertilizer application device for organic farming.
[0004] The technical solution adopted by the present invention to solve its technical problem is: a slow-release fertilization device for organic planting, including at least two slow-release components that can be spliced into a circular structure, each of the slow-release components including an annular slow-release box, an inner annular protective net, an outer annular protective net, an annular fixing seat, a slow-release element and a liquid storage unit. The annular slow-release box is connected end to end by a detachable sealing structure to form an annular cavity adapted to the distribution of plant roots. The lower end of the annular fixing seat is provided with a pointed or angular structure that can be inserted into the soil for fixing. It is used to be embedded in the bottom of the annular groove dug near the plant roots. The annular slow-release box is supported on the ground and is assembled with the annular fixing seat in a corresponding manner to form an accommodating space. Both the inner and outer annular protective nets are located within the accommodating space, and their upper and lower ends are respectively fixedly connected to the annular slow-release box and the annular fixing seat to form an annular interlayer for limiting the slow-release component. The slow-release component is disposed in the annular interlayer, with its upper end penetrating through the annular slow-release box. The side wall of the annular slow-release box is abutted and fixed to the upper end of the slow-release component by a locking component. Its lower end is inserted into the annular positioning groove opened on the annular fixing seat, and the side wall of the annular fixing seat is abutted and fixed to the lower end of the slow-release component by a locking component. The liquid storage unit is installed on the outside or top of at least one of the annular slow-release boxes. The liquid storage unit is connected to the inside of the annular slow-release box through a liquid delivery component and is used to replenish water and fertilizer into the annular slow-release box. The slow-release component has a layered structure, consisting of an outer protective layer with impact resistance, a middle filter layer with impurity filtration, and an inner absorbent layer with water absorption and slow-release function, from the outside to the inside.
[0005] Specifically, the detachable sealing structure includes at least one of bolts, clips, or locks, and the annular slow-release box is provided with a sealing gasket at the joint between its ends.
[0006] Specifically, the outer protective layer is made of a corrosion-resistant rigid material, which includes any one of modified polymer materials, corrosion-resistant metal materials, or composite corrosion-resistant materials.
[0007] Specifically, the middle filter layer is made of a material with liquid permeation filtration function, which includes any one of non-woven fabric, woven mesh or porous membrane.
[0008] Specifically, the inner absorbent layer includes at least one of hydrophilic fiber products and porous absorbent materials.
[0009] Specifically, the edges of the outer protective layer and the middle filter layer are sealed by hot pressing, and the middle filter layer and the inner absorbent layer are bonded together by dot-like bonding with low-melting-point EVA hot melt adhesive.
[0010] Specifically, the annular fixing seat is made of a soil corrosion resistant material, which includes any one of anti-corrosion plastic, stainless steel, or anti-corrosion coated metal.
[0011] Specifically, the liquid storage unit includes a liquid storage tank, which is equipped with a liquid filling port and a suitable sealing gasket, and the liquid storage tank is made of transparent or semi-transparent material.
[0012] Specifically, the locking component is a bolt, and a buffer pad is provided at the contact point between the locking component and the release component.
[0013] The beneficial effects of this invention are: 1. Precise root coverage, reducing waste: This invention uses at least two interlocking slow-release components to form a ring structure (0.8-1.5m in diameter, 30-60cm in depth) adapted to the root distribution of the plant, ensuring that the slow-release component is completely aligned with the dense root area; the closed cavity of the ring slow-release box can prevent water and fertilizer loss, and combined with the "high water absorption-slow release" characteristics of the slow-release component, it improves water and fertilizer utilization and significantly reduces planting costs; 2. 360° Circular Coverage, Perfectly Matching Radial Root Distribution: This invention uses at least two connectable slow-release components to form a circular structure adapted to the radial range of the fruit tree's root system (usually 0.8-1.5m outside the canopy projection). The circular slow-release box, inner circular protective net, outer circular protective net, and slow-release components together constitute a "circular fertilizer supply belt," which can evenly release water and fertilizer to every direction in the dense root area. This completely avoids the limitations of existing "single-point columnar" equipment that can only cover a local root system and "linear strip" equipment that can only supply fertilizer along a straight line, ensuring that the radially distributed lateral roots and fibrous roots can efficiently obtain water and fertilizer. Attached Figure Description
[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0015] Figure 1 This is a schematic diagram of the structure of the slow-release fertilizer application device for organic farming provided by the present invention; Figure 2 A cross-sectional structural schematic diagram of the slow-release fertilizer application device for organic farming provided by the present invention; Figure 3 The present invention provides a slow-release fertilizer application device for organic farming. Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a schematic diagram showing the disassembled structure of the slow-release fertilizer application device for organic farming provided by the present invention. Figure 5 The present invention provides a slow-release fertilizer application device for organic farming. Figure 4 Enlarged structural diagram at point B; Figure 6 This is a schematic diagram of the slow-release component of the slow-release fertilizer application device for organic farming provided by the present invention.
[0016] In the diagram: 1. Annular slow-release box; 2. Inner annular protective net; 3. Outer annular protective net; 4. Annular fixing seat; 5. Slow-release component; 51. Outer protective layer; 52. Middle filter layer; 53. Inner absorbent layer; 6. Liquid storage tank; 61. Liquid outlet pipe. Detailed Implementation
[0017] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.
[0018] like Figures 1-6 As shown, the slow-release fertilization device for organic farming of the present invention includes at least two slow-release components that can be spliced into a circular structure. Each slow-release component includes an annular slow-release box 1, an inner annular protective net 2, an outer annular protective net 3, an annular fixing seat 4, a slow-release component 5, and a liquid storage unit. The annular slow-release box 1 is connected end to end by a detachable sealing structure to form an annular cavity adapted to the distribution of plant roots; The lower end of the annular fixing seat 4 is provided with a pointed or angular structure that can be inserted into the soil for fixing. It is used to embed into the bottom of the annular groove dug near the plant roots. The annular slow release box 1 is supported on the ground and is assembled with the annular fixing seat 4 in a corresponding manner to form a accommodating space. The inner ring-shaped protective net 2 and the outer ring-shaped protective net 3 are both located within the accommodating space, and their upper and lower ends are respectively fixedly connected to the ring-shaped slow-release box 1 and the ring-shaped fixing seat 4 to form an annular interlayer for limiting the slow-release component 5. The slow-release component 5 is located in the annular interlayer, with its upper end penetrating through the annular slow-release box 1. The side wall of the annular slow-release box 1 is abutted and fixed to the upper end of the slow-release component 5 by a locking component. Its lower end is inserted into the annular positioning groove opened on the annular fixing seat 4. The side wall of the annular fixing seat 4 is abutted and fixed to the lower end of the slow-release component 5 by a locking component. The liquid storage unit is installed on the outside or top of at least one annular slow-release tank 1. The liquid storage unit is connected to the inside of the annular slow-release tank 1 through a liquid delivery component and is used to replenish water and fertilizer into the annular slow-release tank 1. The slow-release component 5 has a layered structure, which includes, from the outside to the inside, an outer protective layer 51 with impact protection function, a middle filter layer 52 with impurity filtration function, and an inner water-absorbing layer 53 with water absorption and slow-release function.
[0019] Specifically, the detachable sealing structure includes at least one of bolts, clips, or locks, and the annular slow-release box 1 has sealing gaskets at both ends. This facilitates disassembly and maintenance, ensuring installation progress.
[0020] Specifically, the outer protective layer 51 is made of a corrosion-resistant rigid material, which includes any one of modified polymer materials, corrosion-resistant metal materials, or composite corrosion-resistant materials. The rigid material (such as modified PET or 316L stainless steel) has a tensile strength ≥80MPa and an impact strength ≥5kJ / m. 2It can directly block the impact of stones and hard soil clods with a diameter of ≥2mm in the soil, or the accidental scraping of farm tools during cultivation, and prevent the middle filter layer 52 and the inner water-absorbing layer 53 from being damaged by external forces. Because organic orchard soil has been used for a long time, the pH value fluctuates greatly (4-8) and is rich in corrosive substances such as humic acid and organic acids. Modified polymer materials (such as PET with added antioxidants) and anti-corrosion metal materials (such as 316L stainless steel) can achieve "no corrosion after being buried in the soil for many years". This not only avoids the aging and embrittlement of the protective layer itself (such as ordinary plastics which become embrittled in 3 months), but also prevents corrosion products (such as iron ions generated by the rusting of ordinary steel mesh) from dissolving and polluting the soil or water and fertilizer, which meets the requirement of "no chemical residue" for organic planting.
[0021] Specifically, the middle filter layer 52 is made of a material with liquid permeability filtration function, which includes any one of non-woven fabric, woven mesh, or porous membrane. Non-woven fabric (porosity 60%-70%), woven mesh (50-100 mesh), and porous membrane (pore size 0.1-0.5mm) can accurately block fine sand, clay particles, or organic residues with a diameter ≥0.1mm in the soil, preventing them from entering the inner water-absorbing layer (53) and clogging the pores. Compared with the design without a filter layer, the pore clogging rate of the water-absorbing layer is reduced from more than 30% to less than 5%, ensuring that the water-absorbing layer always maintains the function of "high-efficiency water absorption and uniform slow release", avoiding local "fertilizer interruption" or "fertilizer damage" caused by clogging; the liquid permeability rate of the selected material is ≥100ml / (m 2 •s) ensures that water and fertilizer, after being initially blocked by the outer protective layer, can quickly penetrate into the absorbent layer without significant retention; at the same time, the material itself has a tear resistance of ≥3cN / dtex, which can withstand the lateral tensile force generated when the absorbent layer expands (such as SAP expanding in volume by 30-50% after absorbing water), avoiding the filter layer from tearing and failing, and ensuring long-term filtration function.
[0022] Specifically, the inner absorbent layer 53 includes at least one of hydrophilic fiber products and porous absorbent materials. The hydrophilic fiber products (such as modified PET felt with a water absorption ratio of 8-12 times) and porous absorbent materials (such as sponge with a water absorption ratio of 10-15 times) serve as the base material and can meet the storage requirements of ordinary organic liquid fertilizers (such as composted manure).
[0023] Specifically, the edges of the outer protective layer 51 and the middle filter layer 52 are sealed by hot pressing, and the middle filter layer 52 and the inner absorbent layer 53 are bonded together by dot-like bonding with low melting point EVA hot melt adhesive.
[0024] Specifically, the annular fixing base 4 is made of soil corrosion resistant material, which includes any one of anti-corrosion plastic, stainless steel, or anti-corrosion coated metal. The annular fixing base 4 is the "basic support" of the equipment and needs to be buried in the bottom of the annular groove (30-50cm deep) for a long time. Soil corrosion resistant material (such as anti-corrosion PP plastic or 316L stainless steel) can resist the erosion of soil acid and alkali and microorganisms.
[0025] Specifically, the liquid storage unit includes a liquid storage tank 6, which is equipped with a liquid filling port and a suitable sealing component. The liquid storage tank 6 is made of transparent or semi-transparent material, facilitating the addition of water and fertilizer and making it easy to observe the internal liquid level.
[0026] Specifically, the locking component is a bolt, and a buffer pad is provided at the contact point between the locking component and the slow-release element 5. This prevents damage to the slow-release element 5. The buffer pad can disperse the local pressure of the bolt on the slow-release element, preventing the outer protective layer from cracking and the inner absorbent layer from compacting due to direct bolt compression (compaction will reduce the water absorption ratio).
[0027] In use, firstly, excavate an annular groove (30-60cm deep) in an area with dense root distribution (usually within 0.8-1.5m of the canopy projection) to match the root depth, providing basic positioning space for equipment installation. The annular slow-release box 1 is installed end-to-end using bolts and sealing gaskets. The annular fixing seat 4 is then inserted into the corresponding annular groove. After the lower end of the annular fixing seat 4 contacts the bottom of the annular groove, soil is filled through the gap between the annular slow-release box 1 and the annular groove, and then compacted. The soil enters through the inner annular protective net 2 and the outer annular protective net 3 and comes into contact with the slow-release component 5. The inner and outer annular protective nets 2 and 3 isolate large pebbles, preventing them from abrading the slow-release component 5. The lower end of the annular fixing seat 4 has an angular cross-section. The annular slow-release box 1 is then pressed down and inserted into the bottom of the annular groove for fixation. The upper end of the annular slow-release box 1 is supported on the ground. Water and fertilizer are added through the storage tank 6. The water and fertilizer enter the annular slow-release tank 1 through the lower outlet pipe 61. The slow-release component 5 absorbs the water and fertilizer. The slow-release component 5 quickly absorbs and stores the water and fertilizer through the hydrophilic properties of the inner water-absorbing layer 53. Then, with the synergistic effect of the outer protective layer 51 and the middle filter layer 52, the water and fertilizer are slowly released into the surrounding soil through the soil contact surface. Since the whole device is distributed in a ring, the released water and fertilizer will form a 360° circumferential coverage near the plant roots. Combined with the uniform fertilizer release characteristics of the slow-release component 5, the water and fertilizer concentration difference in the root distribution area can be avoided. The uniformity of water and fertilizer required for organic planting is guaranteed from both spatial dimension and release rate.
[0028] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.
Claims
1. A slow-release fertilizer application device for organic farming, characterized in that, It includes at least two slow-release components that can be spliced into a circular structure. Each slow-release component includes an annular slow-release box (1), an inner annular protective net (2), an outer annular protective net (3), an annular fixing seat (4), a slow-release element (5), and a liquid storage unit. The annular slow-release box (1) is connected end to end by a detachable sealing structure to form an annular cavity adapted to the distribution of plant roots; The lower end of the annular fixing seat (4) is provided with a pointed or angular structure for insertion into the soil for embedding into the bottom of the annular groove dug near the plant roots. The annular slow-release box (1) is supported on the ground and is assembled with the annular fixing seat (4) in a corresponding manner to form a accommodating space. The inner annular protective net (2) and the outer annular protective net (3) are both located in the accommodating space, and their upper and lower ends are respectively fixedly connected to the annular slow-release box (1) and the annular fixing seat (4) to form an annular interlayer for limiting the slow-release component (5). The slow-release component (5) is located in the annular interlayer, with its upper end penetrating through the annular slow-release box (1). The side wall of the annular slow-release box (1) is abutted and fixed to the upper end of the slow-release component (5) by a locking component. Its lower end is inserted into the annular positioning groove opened on the annular fixing seat (4). The side wall of the annular fixing seat (4) is abutted and fixed to the lower end of the slow-release component (5) by a locking component. The liquid storage unit is installed on the outside or upper end of at least one of the annular slow-release boxes (1). The liquid storage unit is connected to the inside of the annular slow-release box (1) through a liquid delivery component and is used to replenish water and fertilizer into the annular slow-release box (1). The slow-release component (5) has a layered structure, which includes, from the outside to the inside, an outer protective layer (51) with impact protection function, a middle filter layer (52) with impurity filtration function, and an inner water-absorbing layer (53) with water absorption and slow-release function.
2. The slow-release fertilizer application equipment for organic farming according to claim 1, characterized in that: The detachable sealing structure includes at least one of bolts, clips or locks, and the annular slow-release box (1) is provided with a sealing gasket at the joint of the two ends.
3. The slow-release fertilizer application equipment for organic farming according to claim 1, characterized in that: The outer protective layer (51) is made of a corrosion-resistant rigid material, which includes any one of modified polymer materials, corrosion-resistant metal materials or composite corrosion-resistant materials.
4. The slow-release fertilizer application device for organic farming according to claim 1, characterized in that: The middle filter layer (52) is made of a material with liquid permeation filtration function, which includes any one of non-woven fabric, woven mesh or porous membrane.
5. The slow-release fertilizer application device for organic farming according to claim 1, characterized in that: The inner absorbent layer (53) includes at least one of hydrophilic fiber products and porous absorbent materials.
6. The slow-release fertilizer application device for organic farming according to claim 1, characterized in that: The edges of the outer protective layer (51) and the middle filter layer (52) are sealed by hot pressing, and the middle filter layer (52) and the inner absorbent layer (53) are bonded together by dot-like bonding with low melting point EVA hot melt adhesive.
7. The slow-release fertilizer application device for organic farming according to claim 1, characterized in that: The annular fixing seat (4) is made of a soil corrosion resistant material, which includes any one of anti-corrosion plastic, stainless steel or anti-corrosion coated metal.
8. The slow-release fertilizer application device for organic farming according to claim 1, characterized in that: The liquid storage unit includes a liquid storage tank (6), which is provided with a liquid filling port and a suitable sealing gasket, and the liquid storage tank (6) is made of transparent or semi-transparent material.
9. The slow-release fertilizer application device for organic farming according to claim 1, characterized in that: The locking component is a bolt, and a buffer pad is provided at the contact point between the locking component and the release component (5).