CN113383631B

CN113383631B - Fixed-point application method of low-diffusivity organic fertilizer

Info

Publication number: CN113383631B
Application number: CN202110556193.9A
Authority: CN
Inventors: 夏志全
Original assignee: Beijing Yongfengtai Biotechnology Co ltd
Current assignee: Beijing Yongfengtai Biotechnology Co ltd
Priority date: 2021-05-21
Filing date: 2021-05-21
Publication date: 2022-04-26
Anticipated expiration: 2041-05-21
Also published as: CN113383631A

Abstract

The invention discloses a fixed-point application method of a low-diffusivity organic fertilizer, belonging to the technical field of organic fertilizers, which can be sent to the roots and stems of crops in soil at fixed points in a mode of loading organic fertilizers on carrier balls, then through a watering mode, when the carrier ball absorbs water, the carrier ball can trigger the release action of the organic fertilizer, meanwhile, the carrier ball is changed from a closed state to a communicated state with the outside, the air in the soil enters to trigger chemical reaction to generate certain heat, thereby forcing the carrier ball to expand to block the permeation path of water, accelerating the disintegration of the surface organic fertilizer and facilitating the rapid dissolution, in addition, the carrier ball can release oil substances which permeate at the bottom side of the carrier ball one step before water, and then the viscosity is increased under the action of high temperature to form an oil film, so that the permeation and barrier effects on water are obviously improved, and the roots and stems of crops can be fully absorbed by the dissolved organic fertilizer.

Description

Fixed-point application method of low-diffusivity organic fertilizer

Technical Field

The invention relates to the technical field of organic fertilizers, in particular to a fixed-point application method of a low-diffusivity organic fertilizer.

Background

The fertilizer application can not only improve the soil fertility, but also be an important measure for improving the yield of crops per unit area, the fertilizer is applied in a large amount at present, China is a large chemical fertilizer producing country and a large using country, the yield and the harvest of agriculture cannot be separated from the fertilizer for many years, but the fertilizer also brings a problem which cannot be ignored, agricultural experts have studied for many years, the hidden loss of the applied fertilizer is very serious, the cost is increased year by year, the benefit is continuously reduced, and the grain yield of each ton of the fertilizer is reduced from the initial 14.8 tons to the current 5.8 tons; in the soil with excessive application of chemical fertilizers, the content of inorganic matters is increased suddenly, the organic matters are weakened, the trace elements are unbalanced, crop diseases and insect pests become serious day by day, a large amount of chemical fertilizers are leached and dissolved with rainwater and are merged into underground water or flow into lakes, and the chemical fertilizers which are not utilized by crops obviously cause environmental pollution.

The organic fertilizer is mainly derived from plants and/or animals, and is a carbon-containing material which is applied to soil to provide plant nutrition as a main function. Is prepared from biological substances, animal and plant wastes and plant residues, eliminates toxic and harmful substances in the biological substances, and is rich in a large amount of beneficial substances, including: various organic acids, peptides and rich nutrient elements including nitrogen, phosphorus and potassium. The fertilizer not only can provide comprehensive nutrition for crops, but also has long fertilizer efficiency, can increase and update soil organic matters, promote microbial propagation, improve the physical and chemical properties and biological activity of soil, and is a main nutrient for green food production.

However, in the process of fertilizing, part of nutrients are easy to migrate to the deep soil along with the penetration of moisture in the soil, and the absorption capacity and range of crop roots are limited, so that part of nutrients are wasted during the application of the organic fertilizer and are difficult to be directly absorbed by the crop roots, and the actual dosage of the organic fertilizer is obviously increased compared with the required dosage of the crops.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide a fixed-point application method of a low-diffusivity organic fertilizer, which can be used for feeding a carrier ball at a fixed point into the root and stem of a crop in soil in a manner of loading the organic fertilizer on the carrier ball, then triggering the release action of the organic fertilizer after the carrier ball absorbs moisture in a watering manner, simultaneously converting the carrier ball from a closed state into a communicated state with the outside, triggering chemical reaction to generate certain heat after air in the soil enters, forcing the carrier ball to expand to block the permeation path of the moisture, accelerating the disintegration of the surface organic fertilizer to be beneficial to rapid dissolution, releasing oil substances from the carrier ball, further permeating at the bottom side of the carrier ball before the moisture, then forming an oil film under the action of high temperature and obviously improving the permeation and blocking effects on the moisture, the rhizomes of the crops can be ensured to fully absorb the dissolved organic fertilizer.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A fixed-point application method of a low-diffusivity organic fertilizer comprises the following steps:

s1, preparing the following raw materials in parts by weight: 15-25 parts of pig manure, 10-18 parts of pond sludge, 15-25 parts of corn straw, 2-8 parts of attapulgite powder, 6-10 parts of rock phosphate powder, 6-12 parts of humic acid, 10-14 parts of soybean meal, 3-5 parts of saccharides and 0.6-1.2 parts of leavening agent;

s2, mixing the raw materials, removing attapulgite powder and rock phosphate powder, and placing the mixture in a fermentation chamber for sealed fermentation, wherein the fermentation temperature is 35-45 ℃ and the fermentation time is 36-48 h;

s3, mixing the attapulgite powder and the rock phosphate powder after fermentation to prepare an organic fertilizer, and then covering the organic fertilizer on the outer surface of the carrier ball and drying and attaching the organic fertilizer;

s4, embedding the carrier ball into the root and stem of the crop in the soil at a fixed point, watering to trigger the organic fertilizer release action of the carrier ball, and delaying the diffusion of the organic fertilizer to the deep soil for the effective absorption of the root and stem of the crop;

s5, applying a magnetic field to recover and reproduce the carrier balls in the soil before next fertilization, so as to realize cyclic utilization;

the carrier ball comprises a hollow anti-seepage ball, a water-soluble end and a counterweight end, the organic fertilizer is covered on the outer surface of the hollow anti-seepage ball, the water-soluble end and the counterweight end are respectively connected to the upper end and the lower end of the hollow anti-seepage ball in an embedded mode, a plurality of water-absorbing fibers which are uniformly distributed are connected to the water-soluble end in an embedded mode, and the water-absorbing fibers extend to the outer side of the water-soluble end;

the hollow anti-seepage ball comprises an outer expansion film, an inner shaping net and a plurality of thermal expansion bags, wherein the inner shaping net is positioned on the inner side of the outer expansion film, the thermal expansion bags are uniformly connected between the outer expansion film and the inner shaping net, each thermal expansion bag comprises an inner hard heat-insulation sleeve, an expansion air bag and a plurality of heat-conducting wires, the expansion air bag is connected to one end, close to the outer expansion film, in the inner hard heat-insulation sleeve, one end, close to the inner shaping net, in the inner hard heat-insulation sleeve is filled with a self-heating material, the heat-conducting wires are uniformly connected to the inner side of one end, close to the outer expansion film, of the expansion air bag, and the heat-conducting wires penetrate through the expansion air bag and extend into the self-heating material;

the thermal expansion bag further comprises an outer elastic heat-insulating sleeve, the outer elastic heat-insulating sleeve is sleeved at one end, close to the outer expansion film, of the inner hard heat-insulating sleeve, one end of the outer elastic heat-insulating sleeve is connected with the inner hard heat-insulating sleeve, the other end of the outer elastic heat-insulating sleeve is connected with the expansion air bag, the outer elastic heat-insulating sleeve is made into a hollow structure by adopting an elastic material, and powdery silicon dioxide is filled in the outer elastic heat-insulating sleeve;

the counterweight end comprises an outer cladding, an inner oil bag and a thermal decomposition core, the inner oil bag is connected to the inner surface of the outer cladding, the thermal decomposition core is embedded and connected to the outer cladding, and the thermal decomposition core is communicated with the inner oil bag.

Further, in step S1, the sugar is a mixture of one or more of sugar cane, sugar beet and honey, and the leaven is a mixture of one or more of aspergillus oryzae, yeast and geotrichum candidum.

Further, the average water content of the raw material in step S1 is 12-17%.

Furthermore, the hollow anti-seepage ball is made of a heat-insulating material and is of a hollow structure, the water-soluble end is made of a water-soluble material, the counterweight end is made of a ferromagnetic material, and the weight of the counterweight end is greater than that of the water-soluble end.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) this scheme can be through the mode with carrier ball load fertilizer, the rhizome department of crop in the soil is sent into to the fixed point, then through the mode of watering, can trigger the release action of fertilizer after the carrier ball absorbs moisture, the carrier ball is changed into the intercommunication state with the external world by the encapsulated situation simultaneously, trigger chemical reaction after the air in the soil gets into and produces certain heat, thereby force the carrier ball to expand and carry out the shutoff to the infiltration route of moisture, the splitting that accelerates surface layer fertilizer simultaneously disintegrates helps dissolving fast, the carrier ball still can release oil matter in addition, it further permeates at the carrier ball bottom side earlier than moisture, then the viscosity grow can form the oil film under high temperature, show the promotion is to the infiltration separation effect of moisture, guarantee that the crop rhizome can fully absorb the fertilizer that dissolves.

(2) The carrier ball comprises a hollow anti-seepage ball, a water-soluble end and a counterweight end, an organic fertilizer is covered on the outer surface of the hollow anti-seepage ball, the water-soluble end and the counterweight end are respectively connected to the upper end and the lower end of the hollow anti-seepage ball in an embedded mode, the water-soluble end is connected with a plurality of water-soluble ends in an embedded mode and extends to the outer side of the water-soluble end, the counterweight end plays a counterweight role in the carrier ball, the carrier ball is guaranteed to be located in soil at a reasonable posture all the time, after water is absorbed and transferred to the counterweight end, the hollow anti-seepage ball and the outside after the counterweight end is dissolved start to trigger the release action of the organic fertilizer.

(3) The hollow anti-seepage ball comprises an outer expansion film, an inner shaping net and a plurality of heat expansion bags, wherein the inner shaping net is positioned on the inner side of the outer expansion film, the heat expansion bags are uniformly connected between the outer expansion film and the inner shaping net, the inner shaping net plays a role in basic shaping of the outer expansion film and avoids deformation caused by extrusion in soil, the heat expansion bags react with oxygen after contacting air to release heat and automatically trigger expansion action, the outer expansion film is pushed to synchronously expand by means of the supporting effect of the inner shaping net, the disintegration of organic fertilizers is accelerated, and the permeation path of moisture is blocked.

(4) The thermal expansion bag comprises an internal hard thermal insulation sleeve, an expansion airbag and a plurality of heat conducting wires, the expansion airbag is connected to one end, close to an external expansion film, of the internal hard thermal insulation sleeve, one end, close to an internal shaping net, of the internal hard thermal insulation sleeve is filled with a self-heating material, the heat conducting wires are evenly connected to the inner side of one end, close to the external expansion film, of the expansion airbag, the heat conducting wires penetrate through the expansion airbag and extend into the self-heating material, the expansion direction of the expansion airbag after being heated can be limited by the internal hard thermal insulation sleeve, after the self-heating material reacts with oxygen in the air to release heat, gas in the expansion airbag is heated through the heat conducting wires, and the expansion airbag is made to expand and then the external expansion film is pushed to synchronously expand.

(5) The heat expansion bag further comprises an outer elastic heat insulation sleeve, the outer elastic heat insulation sleeve is sleeved at one end, close to the outer expansion film, of the inner hard heat insulation sleeve, one end of the outer elastic heat insulation sleeve is connected with the inner hard heat insulation sleeve, the other end of the outer elastic heat insulation sleeve is connected with the expansion airbag, the outer elastic heat insulation sleeve can follow the expansion of the expansion airbag to follow synchronously, the heat insulation effect on the expansion airbag is kept all the time, the expansion effect is prevented from being influenced after heat loss, and meanwhile the expansion direction of the expansion airbag can be continuously limited.

(6) The pop-up insulation cover adopts elastic material to make hollow structure, and packs powdered silica in the pop-up insulation cover, utilizes silica to follow the deformation of pop-up insulation cover, not only can keep thermal-insulated effect, has certain hardness simultaneously and supports the inflation direction of inflation gasbag.

(7) The counter weight end includes surrounding layer, interior oil pocket and pyrolysis core, and interior oil pocket is connected on the internal surface of surrounding layer, and the pyrolysis core is inlayed and is connected on the surrounding layer, and the pyrolysis core keeps the intercommunication with interior oil pocket, and the pyrolysis core decomposes after receiving the influence of generating heat of thermal expansion bag, resumes the unblocked of interior oil pocket, and lubricating oil in it can permeate by the homeotropic outflow to the viscosity increase film that is heated gradually, fully prevents moisture and continues permeating downwards.

Drawings

FIG. 1 is a schematic flow chart of the present invention in use;

FIG. 2 is a schematic structural view of a carrier sphere of the present invention;

FIG. 3 is a schematic structural view of the hollow anti-seepage ball of the present invention;

FIG. 4 is a schematic view of the structure at A in FIG. 3;

FIG. 5 is a schematic view of the structure of the thermal balloon of the present invention;

FIG. 6 is a schematic view of the structure of the lubricating oil of the present invention during film formation.

The reference numbers in the figures illustrate:

1 hollow seepage-proofing ball, 11 external expansion film, 12 internal shaping net, 13 thermal expansion bag, 131 internal hard thermal insulation sleeve, 132 expansion air bag, 133 heat-conducting wire, 134 external elastic thermal insulation sleeve, 2 water-soluble end, 3 weight-balancing end, 31 external cladding, 32 internal oil bag, 33 thermal decomposition core and 4 water-absorbing fiber.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

referring to fig. 1-2, a method for applying a low-diffusivity organic fertilizer at a fixed point comprises the following steps:

s1, preparing the following raw materials in parts by weight: 15 parts of pig manure, 10 parts of pond sludge, 15 parts of corn straw, 2 parts of attapulgite powder, 6 parts of rock phosphate powder, 6 parts of humic acid, 10 parts of soybean meal, 3 parts of saccharides and 0.6 part of a leavening agent;

s2, mixing the raw materials, removing attapulgite powder and rock phosphate powder, and placing the mixture in a fermentation chamber for sealed fermentation, wherein the fermentation temperature is 35 ℃ and the fermentation time is 36 h;

and S5, applying a magnetic field to recover and reproduce the carrier balls in the soil before next fertilization, thereby realizing recycling.

In step S1, the sugar is a mixture of one or more of sugar cane, sugar beet and honey, and the leaven is a mixture of one or more of Aspergillus oryzae, yeast and Geotrichum candidum.

The average moisture content of the raw material in step S1 is 12-17%.

Referring to fig. 2, the carrier ball includes a hollow impermeable ball 1, a water soluble end 2 and a counterweight end 3, the organic fertilizer is covered on the outer surface of the hollow impermeable ball 1, the water soluble end 2 and the counterweight end 3 are respectively connected to the upper end and the lower end of the hollow impermeable ball 1 in an embedded manner, the water soluble end 2 is connected with a plurality of water absorbing fibers 4 which are uniformly distributed in an embedded manner, the water absorbing fibers 4 extend to the outer side of the water soluble end 2, the counterweight end 3 plays a role in balancing the carrier ball, the carrier ball is guaranteed to be always located in soil in a reasonable posture, and after the water absorbing fibers 4 absorb water and transfer to the counterweight end 3, the hollow impermeable ball 1 is communicated with the outside after the counterweight end 3 is dissolved, and then the release action of the organic fertilizer is triggered.

The hollow anti-seepage ball 1 is made of a heat-insulating material and is of a hollow structure, the water-soluble end 2 is made of a water-soluble material, the counterweight end 3 is made of a ferromagnetic material, and the weight of the counterweight end is larger than that of the water-soluble end 2.

Referring to fig. 3, the hollow anti-seepage ball 1 includes an outer expansion film 11, an inner shaping net 12 and a plurality of thermal expansion bags 13, the outer expansion film 11 is made of elastic heat conduction material, the inner shaping net 12 is made of hard heat conduction material, the inner shaping net 12 is located inside the outer expansion film 11, the thermal expansion bags 13 are uniformly connected between the outer expansion film 11 and the inner shaping net 12, the inner shaping net 12 plays a basic shaping role on the outer expansion film 11 to prevent deformation caused by extrusion in soil, the thermal expansion bags 13 react with oxygen to release heat after contacting with air and automatically trigger expansion action, the outer expansion film 11 is pushed to synchronously expand by the supporting effect of the inner shaping net 12, disintegration of organic fertilizer is accelerated, and a permeation path of moisture is blocked.

Referring to fig. 4-5, the thermal expansion bag 13 includes an inner hard thermal insulation sleeve 131, an expansion air bag 132 and a plurality of heat conduction wires 133, the expansion air bag 132 is connected to one end of the inner hard thermal insulation sleeve 131 close to the outer expansion film 11, one end of the inner hard thermal insulation sleeve 131 close to the inner shaping net 12 is filled with a self-heating material, the heat conduction wires 133 are uniformly connected to the inner side of one end of the expansion air bag 132 close to the outer expansion film 11, and the heat conduction wires 133 penetrate through the expansion air bag 132 and extend into the self-heating material, the inner hard thermal insulation sleeve 131 can limit the expansion direction of the expansion air bag 132 after being heated, and after the self-heating material reacts with oxygen in the air to release heat, the gas in the expansion air bag 132 is heated by the heat conduction wires 133 to be expanded, and then the outer expansion film 11 is pushed to be expanded synchronously.

The thermal expansion bag 13 still includes outer heat preservation cover 134 that plays, outer heat preservation cover 134 that plays cup joints in interior hard heat preservation cover 131 and is close to the one end of outer inflation membrane 11, and outer heat preservation cover 134 one end that plays is connected the other end with interior hard heat preservation cover 131 and is connected with inflation gasbag 132, outer heat preservation cover 134 that plays can follow inflation gasbag 132 and follow in step, remain the heat preservation effect to inflation gasbag 132 throughout, avoid the heat to cause the influence inflation effect behind the loss, can continue to restrict inflation gasbag 132's the direction of inflation simultaneously.

The outer elastic thermal insulation sleeve 134 is of a hollow structure made of elastic materials, powdered silicon dioxide is filled in the outer elastic thermal insulation sleeve 134, the silicon dioxide is utilized to follow the deformation of the outer elastic thermal insulation sleeve 134, the thermal insulation effect can be kept, and meanwhile, certain hardness is achieved to support the expansion direction of the expansion air bag 132.

Counterweight end 3 includes surrounding layer 31, interior oil pocket 32 and pyrolysis core 33, surrounding layer 31 is made for ferromagnetic material, pyrolysis core 33 can adopt sodium bicarbonate to make, it can decompose to be heated, interior oil pocket 32 is connected on the internal surface of surrounding layer 31, pyrolysis core 33 inlays and connects on surrounding layer 31, and pyrolysis core 33 and interior oil pocket 32 keep communicating, pyrolysis core 33 decomposes after receiving the fever influence of thermal expansion bag 13, resume the unblocked of interior oil pocket 32, lubricating oil in it can flow out with the tendency and permeate, and gradually be heated the viscosity increase and form the membrane, fully prevent moisture and continue infiltration downwards.

Example 2:

s1, preparing the following raw materials in parts by weight: 20 parts of pig manure, 14 parts of pond sludge, 20 parts of corn straw, 5 parts of attapulgite powder, 8 parts of rock phosphate powder, 8 parts of humic acid, 12 parts of soybean meal, 4 parts of saccharides and 0.9 part of a leavening agent;

s2, mixing the raw materials, removing attapulgite powder and rock phosphate powder, and placing the mixture in a fermentation chamber for sealed fermentation, wherein the fermentation temperature is 40 ℃ and the fermentation time is 42 h;

The remainder was in accordance with example 1.

Example 3:

s1, preparing the following raw materials in parts by weight: 25 parts of pig manure, 18 parts of pond sludge, 25 parts of corn straw, 8 parts of attapulgite powder, 10 parts of rock phosphate powder, 12 parts of humic acid, 14 parts of soybean meal, 5 parts of saccharides and 1.2 parts of a leavening agent;

s2, mixing the raw materials, removing attapulgite powder and rock phosphate powder, and placing the mixture in a fermentation chamber for sealed fermentation, wherein the fermentation temperature is 45 ℃ and the fermentation time is 48 hours;

The remainder was in accordance with example 1.

Referring to fig. 6, the carrier ball is loaded with an organic fertilizer, and is fed into the root and stem of a crop in soil at a fixed point, and then is watered, when the carrier ball absorbs moisture, the carrier ball triggers the release of the organic fertilizer, and simultaneously is changed from a closed state to a communicated state with the outside, and after air in the soil enters, the carrier ball triggers a chemical reaction to generate certain heat, so that the carrier ball is forced to expand to block the permeation path of the moisture, and the disintegration of the surface layer organic fertilizer is accelerated to facilitate rapid dissolution.

The above are merely preferred embodiments of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.

Claims

1. A fixed-point application method of a low-diffusivity organic fertilizer is characterized by comprising the following steps: the method comprises the following steps:

the carrier ball comprises a hollow anti-seepage ball (1), a water-soluble end (2) and a counterweight end (3), the organic fertilizer is covered on the outer surface of the hollow anti-seepage ball (1), the water-soluble end (2) and the counterweight end (3) are respectively connected to the upper end and the lower end of the hollow anti-seepage ball (1) in an embedded mode, a plurality of water-absorbing fibers (4) which are uniformly distributed are connected to the water-soluble end (2) in an embedded mode, and the water-absorbing fibers (4) extend to the outer side of the water-soluble end (2);

the hollow anti-seepage ball (1) comprises an outer expansion film (11), an inner shaping net (12) and a plurality of heat expansion bags (13), the inner shaping net (12) is positioned at the inner side of the outer expansion film (11), the heat expansion bags (13) are uniformly connected between the outer expansion film (11) and the inner shaping net (12), the heat expansion bag (13) comprises an inner hard thermal insulation sleeve (131), an expansion air bag (132) and a plurality of heat conduction wires (133), the expansion air bag (132) is connected with one end of the inner hard thermal insulation sleeve (131) close to the outer expansion film (11), one end of the inner hard insulating sleeve (131) close to the inner shaping net (12) is filled with self-heating material, the heat conducting wires (133) are uniformly connected to the inner side of one end of the expansion air bag (132) close to the outer expansion film (11), and the heat conducting wire (133) penetrates through the expansion air bag (132) and extends into the self-heating material;

the thermal expansion bag (13) further comprises an outer elastic heat-insulating sleeve (134), the outer elastic heat-insulating sleeve (134) is sleeved at one end, close to the outer expansion film (11), of the inner hard heat-insulating sleeve (131), one end of the outer elastic heat-insulating sleeve (134) is connected with the inner hard heat-insulating sleeve (131), the other end of the outer elastic heat-insulating sleeve is connected with the expansion air bag (132), the outer elastic heat-insulating sleeve (134) is made into a hollow structure by adopting an elastic material, and the outer elastic heat-insulating sleeve (134) is filled with powdery silicon dioxide;

the counterweight end (3) comprises an outer cladding (31), an inner oil bag (32) and a thermal decomposition core (33), the inner oil bag (32) is connected to the inner surface of the outer cladding (31), the thermal decomposition core (33) is connected to the outer cladding (31) in an embedded mode, and the thermal decomposition core (33) is communicated with the inner oil bag (32).

2. The method for the fixed-point application of the low-diffusivity organic fertilizer as claimed in claim 1, wherein the method comprises the following steps: in step S1, the sugar is a mixture of one or more of sugar cane, sugar beet and honey, and the leaven is a mixture of one or more of Aspergillus oryzae, yeast and Geotrichum candidum.

3. The method for the fixed-point application of the low-diffusivity organic fertilizer as claimed in claim 1, wherein the method comprises the following steps: the average moisture content of the raw material in step S1 is 12-17%.

4. The method for the fixed-point application of the low-diffusivity organic fertilizer as claimed in claim 1, wherein the method comprises the following steps: the hollow anti-seepage ball (1) is made of a heat-insulating material and is of a hollow structure, the water-soluble end (2) is made of a water-soluble material, the counterweight end (3) is made of a ferromagnetic material, and the weight of the counterweight end is larger than that of the water-soluble end (2).