The kit of the tube type for supplying the oxygen to the soil and method of using it.

Abstract

The present invention relates to a tube-shaped kit for soil insertion and a method of use using the same, comprising a smooth or pointed tube for supplying oxygen contained in the air to the soil to provide an aerobic soil environment where oxygen is present so as to prevent the generation of greenhouse gases such as methane (CH4) generated from crop roots' oxygen respiration or anaerobic soil.

Description

Technology Field

[0001] The present invention relates to a tube-shaped kit for supplying oxygen contained in the air to soil and a method of using the same, in order to provide an aerobic soil environment where oxygen is present so as to prevent the generation of greenhouse gases such as methane (CH4) generated from crop roots' aerobic respiration or anaerobic soil. More specifically, the invention relates to a tube-shaped kit for supplying oxygen to soil and a method of using the same, wherein the shape or method of use of the tube can be selectively adjusted to provide effective workability and excellent efficacy depending on the physical properties or shape of the soil and the location of insertion when inserting a hollow tube into the soil to supply oxygen contained in the air into the soil. Background Technology

[0003] During the process of crop cultivation, root development and growth are linked to soil air (oxygen) and temperature; consequently, root respiration, enzymatic activity, microbial activity, and the action of root mycorrhizal fungi are closely related to the air in the soil.

[0005] For plants to grow strong, their roots must be strong, and for plant roots to grow strong, they absolutely need oxygen as well as adequate nutrients and water. Plants also respire through their roots as well as their leaves, and for plants to grow well, root respiration must be smooth. For this reason, even when growing in soil, a method of mixing in coarse white perlite is sometimes applied to create air holes to ensure good drainage.

[0007] The minimum oxygen concentration required for crop growth is 5 ppm, so it must not fall below this level. Since the energy required for plant root development is obtained through respiration for growth and physiological functions, if the amount of dissolved oxygen near the roots is insufficient, metabolic disorders occur due to a rapid decrease in respiration, which inhibits growth. In particular, as plant growth becomes more vigorous at high temperatures and the demand for oxygen increases for nutrient absorption, the dissolved oxygen concentration of the supply water decreases rapidly, becoming a limiting factor for growth.

[0009] If root oxygen in the soil and water is abundant during the crop cultivation process, measures are needed to significantly improve the growing environment, including the optimization of root respiration and establishment, the maximization of catabolism, assimilation, and biochemical processes, the maximization of nutrient or water absorption rates, the normalization of metabolic processes, the strengthening of crop resistance, the reduction of topdressing and pesticide use, the maximum stabilization of crop growth, increased yield and marketability, the overcoming and resolution of salt accumulation, and the overcoming and resolution of gas damage or continuous cropping problems.

[0011] In addition, when root oxygen is deficient, problems must be considered, such as poor root establishment and reduced absorption of water and nutrients, metabolic disorders of the roots, poor catabolic, assimilated, and biochemical processes, resulting in nutrient loss, excessive topdressing, salt accumulation, and reduced resistance to pests and diseases, which prevent crops from growing properly, as well as the potential for root death due to increased ethylene production.

[0013] Therefore, it is acknowledged that oxygen supply is crucial for crop cultivation, as it enables the fundamental and inherent vitality and liveliness of the underground roots and above-ground leaves, stems, and fruits to increase marketability and yield, and further allows crops to develop natural resistance to diseases and pests. Nevertheless, due to a lack of imagination and technical expertise, oxygen supply technologies for crop roots are inadequate or require significant costs, resulting in a situation where they are not widely utilized by farmers.

[0014] Methane (CH4), along with carbon dioxide and nitrous oxide, is a major greenhouse gas reported to account for more than 20% of total global greenhouse gases. In particular, despite its relatively short atmospheric residence time, methane is one of the important greenhouse gases with a Global Warming Potential (GWP) approximately 28 times higher than that of carbon dioxide due to its high infrared absorption capacity; total global methane emissions amount to 530 Tg per year. -1 It is estimated that approximately 54–72% of total emissions are released into the atmosphere due to anthropogenic activities such as rice cultivation. Globally, methane emitted from rice paddies amounts to 40–100 Tg per year. -1 At the level of an average of 60 Tg year -1 It is estimated to account for about 5 to 30 percent of the total artificially emitted methane.

[0016] Among the six major greenhouse gases affecting global warming, excluding carbon dioxide, methane accounts for the highest proportion, and in fact, although methane has long been overshadowed by CO2, it has a huge impact on the rise in global temperatures.

[0018] Unlike carbon dioxide, which is mostly emitted in the energy sector, most methane is known to be generated in water-containing soil, including in the agricultural and waste sectors. In nature, methane is produced by the anaerobic respiration of microorganisms, and the production of methane by microorganisms is carried out by methanogens in an axic environment, such as the anaerobic degradation and fermentation of organic matter.

[0020] Methane (CH4), a long-lived greenhouse gas (LLGHG), is a gas with a warming effect about 15 to 34 times stronger than carbon dioxide (CO2). Since industrialization, the concentration of methane in the atmosphere has been on a steady upward trend, and it is reported that the global warming impact caused by the radiative forcing of methane currently accounts for about 16% of total greenhouse gases, which is the second largest share after carbon dioxide (66%).

[0022] Unlike carbon dioxide, the combustion of fossil fuels is not the primary source of methane emissions. Most methane emissions are caused by biological factors, specifically the activity of methanogenic bacteria. Generally, methanogenic bacteria produce methane by decomposing organic matter in oxygen-deficient environments. Freshwater rice paddies are a prime example of an oxygen-deficient environment, and it is known that approximately 8% of anthropogenic methane emissions originate from these paddies.

[0024] In Korea, where rice paddies account for 53% (865,000 ha) of the total agricultural land area, approximately 22% of total domestic methane emissions are generated during rice cultivation. Considering the proportion of global anthropogenic methane emissions accounted for by rice cultivation, this is a significant amount, making the reduction of methane from rice paddies an essential part of reducing national methane emissions.

[0026] In this regard, although various studies have been conducted domestically to prevent or minimize methane generation, there has been no comprehensive summary of domestic research cases. Consequently, it is difficult to assess the current research status and discuss directions for necessary research areas. Furthermore, the absence of domestic research literature that addresses methane generation and emissions in detail from paddy soils or landfills makes it difficult for those encountering these unique environments and methane emissions for the first time to understand the situation.

[0028] Therefore, a method should be developed to provide long-term oxygen respiration for crop roots and an aerobic atmosphere for the soil through simple physical methods while minimizing the economic burden.

[0030] The following describes prior art patents for supplying beneficial oxygen or hydrogen to the body to minimize oxygen respiration and methane generation in plant roots.

[0032] Korean published patent application number 10-2020-0031826 discloses an oxygen-generating mineral fertilizer characterized by comprising a central zeolite mass, a calcium peroxide inner shell containing a decomposition catalyst that surrounds the outer surface of the zeolite mass, and a slag outer shell that surrounds the outer surface of the calcium peroxide inner shell.

[0033] Korean published patent application number 10-2018-0100503 discloses a plant cultivation box for bottom watering with an air layer that allows plants to be grown in a pot without a drainage hole.

[0034] Korean published patent application number 10-2009-0098349 presents an oxygen farming system using a microbubble device.

[0035] In Korean Published Patent Application No. 10-2020-0170459, 2Na2CO 3*?*An oxygen generating agent composition comprising 3H2O2; K2O; Ca(OH)2; CaCO3; and a water-soluble acid, and a method for manufacturing the same are presented.

[0036] Korean Published Patent Application No. 10-2020-0125838 discloses a cobalt catalyst for oxygen evolution and a method for manufacturing the same, which has a structure in which hollow nanoparticles of cobalt trioxide (Co3O4) are dispersed on a reduced graphene oxide support due to the Kirkendall effect, thereby having electrochemical reaction activity suitable for water electrolysis and significantly improved catalyst stability under acidic high potential conditions.

[0037] Korean published patent registration number 10-2314179 presents a fertilizer composition for reducing methane gas generation containing ethephon as an active ingredient and its uses.

[0038] Korean Patent Publication No. 10-2023-0164955 presents a composition for reducing soil-derived methane gas generation containing humic acid-coated hydroxyapatite as an active ingredient and uses thereof.

[0039] In Korean Published Patent Registration No. 10-2582127, the genus Lactobacillus ( Lactobacillus sp.) Microorganisms, Limosil Lactobacillus genus ( Limosilactobacillus sp.) Microorganisms, Bacillus genus ( Bacillus sp.) Microorganisms and the genus Saccharomyces ( Saccharomyces The present invention provides a method for preparing a functional single-ingredient feed composition comprising the step of adding a grain fermentation liquid to a mixed culture of microorganisms (sp.) and fermenting it, a functional single-ingredient feed composition prepared by the said method, and a fermented feed containing the same.

[0040] Korean Patent Publication No. 10-2023-0015589 presents a composition for reducing methane gas generation containing lignin, humic acid, or an iron complex thereof as an active ingredient.

[0041] Korean Patent Publication No. 10-2023-0002321 presents a method for reducing methane gas emitted from the surface of a landfill cover layer or surface of a waste landfill and a methane gas reduction system for the same, characterized by installing a bio-active layer using a bio-media that is installed on the cover layer or surface of a landfill, has a specific surface area, porosity, and permeability coefficient that allows aerobic methane-oxidizing microorganisms to be activated and methane gas to flow freely, and has thermal conductivity that can protect the methane-oxidizing microorganisms from changes in atmospheric temperature; and while the methane gas emitted from the surface of the cover layer or surface of the landfill passes through the bio-active layer, the methane gas is converted into carbon dioxide by the methane oxidation reaction of aerobic methane-oxidizing microorganisms activated by oxygen supply through atmospheric diffusion and then released into the atmosphere.

[0042] Korean Patent Publication No. 10-2014-0117991 presents a composition for inhibiting methane gas production containing a chelating agent as an active ingredient to provide a method for economically and effectively inhibiting methane gas production.

[0043] However, it was confirmed that in the prior art described above, there is no implementation technology regarding a tube-shaped kit for supplying oxygen contained in the air to the soil and a method of using the same in order to provide an aerobic soil environment where oxygen is present so as to prevent the generation of greenhouse gases such as methane (CH4) generated from crop roots or anaerobic soil, as in the present invention, and the novel technology of the present invention was developed. Prior art literature

[0045] KR Application No. 10-2020-0031826KR Application No. 10-2018-0100503KR Application No. 10-2009-0098349KR Application No. 10-2020-0170459KR Application No. 10-2020-0125838KR Registration No. 10-2314179KR Publication No. 10-2023-0164955KR Registration No. 10-2582127KR Publication No. 10-2023-0015589KR Publication No. 10-2023-0002321KR Publication No. 10-2014-0117991 The problem to be solved

[0046] The present invention aims to provide a tube-shaped kit for supplying oxygen contained in the air to the soil and a method of using the same, so as to provide an aerobic soil environment where oxygen is present for a long period of time, thereby maximizing the oxygen respiration of crop roots to produce high-quality crops and preventing the generation of greenhouse gases such as methane (CH4) in anaerobic soil by providing an aerobic atmosphere to the soil environment. means of solving the problem

[0048] The technical concept of the present invention, disclosed as a means to achieve the above objective, is a technology of a tube-shaped kit for supplying oxygen to soil to facilitate the aerobic respiration of crop roots and to reduce greenhouse gas emissions, specifically methane generated in anaerobic soil environments, by supplying oxygen into the soil through a hollow tube inserted into the soil. For this purpose, the tube is configured such that, depending on the physical properties of the soil, the insertion opening is made of a smooth tube for insertion into soft, non-firm soil, or, to minimize clogging of the tube caused by soil inflow when the tube is inserted into hard soil by external force, the insertion opening is made of a pointed tube with a tube cover closed. After inserting the pointed tube into the soil, the tube is inserted and fixed until the tube cover touches the inside of the tube using a tube cover pusher, and then the tube is pulled to the length of the tube cover to open the tube cover. Furthermore, depending on the crop cultivation environment of open-field or greenhouse cultivation, a cap or U-shaped The invention features a tube-shaped kit for supplying oxygen to soil, wherein a tube is optionally configured at the top of the tube and includes a means for supplying oxygen contained in the air, and the oxygen is supplied from the top of the tube when additional chemical oxygen supply is required or when the supply of components necessary for crop growth is required. Effects of the invention

[0050] As stated in the background technology above, the present invention allows for the insertion of a hollow tube into the soil to supply oxygen from the air to the soil for a long period, thereby enabling high yields of high-quality crops through the oxygen respiration of plant roots. Furthermore, by minimizing the generation of greenhouse gases, such as methane, in soils with an anaerobic atmosphere where oxygen is absent, it is expected to contribute significantly to the creation of economic benefits for farmers and play a major role in preventing global warming, which is becoming increasingly serious. Brief explanation of the drawing

[0052] FIG. 1: An exemplary diagram of a tube-shaped kit for supplying oxygen to soil, wherein the insertion opening of the tube is formed in a smooth shape for inserting the tube-shaped kit according to the present invention into soft soil that is not firm. FIG. 2: An example of a tube-shaped kit according to the present invention for supplying oxygen to soil, wherein the insertion opening of the tube is formed in a pointed shape so that the insertion opening of the tube can be controlled to close and open when the tube is inserted into the soil by external power when the soil is hard. FIG. 3: An example of a tube-shaped kit for supplying oxygen to soil, wherein a rainwater inflow prevention cap is formed on the upper part of the tube to prevent rainwater from entering the tube during the process of open-field cultivation of crops according to the present invention. FIG. 4: An example of a tube-shaped kit for supplying oxygen to soil, wherein a U-shaped tube is formed at the top of the tube to prevent rainwater from entering the tube during the process of open-field cultivation of crops according to the present invention. Specific details for implementing the invention

[0053] The technical concept of the present invention will be explained in detail below with reference to the drawings.

[0055] FIG. 1 is an example of a tube-shaped kit according to the present invention for supplying oxygen to soil, wherein the insertion opening of the tube (10) is made of a flat shape for inserting the tube (10) into soft soil that is not firm. The tube (10) of FIG. 1 can be inserted into and removed from the soil by applying a small external force, and is configured such that when additional chemical oxygen supply is required or components necessary for the growth of crops are required, oxygen can be supplied from the upper part of the tube (10) through an additional functional supply means (70) while including a means for supplying oxygen contained in the air through the tube (10). This configuration allows for the provision of oxygen respiration to plant roots while cultivating crops without being affected by the crop cultivation environment or rainfall in open fields or greenhouse cultivation sites, and creates an aerobic atmosphere in the soil to provide reduction of methane greenhouse gas.

[0057] FIG. 2 is an exemplary illustration of a tube-shaped kit according to the present invention for supplying oxygen to soil, wherein the insertion port of the tube (10) is formed in a pointed shape so that the opening of the insertion port of the tube (10) can be controlled to be closed and opened when the tube (10) is inserted into the soil by external power because the soil is hard. The tube-shaped kit of FIG. 2 is composed of a pointed tube (10) in which a tube cover (20) is fixed to a hinge (30) at the lower end of the insertion part of the tube (10). In order to minimize blockage of the tube due to soil inflow into the tube (10) when the tube (10) is inserted into the soil by external force because the soil is hard, the tube cover (20) is closed at the insertion port of the pointed tube (10) and the tube (10) is inserted into the soil. After inserting the pointed tube (10) into the soil, the tube inside the tube (10) is pushed using the tube cover pusher (40) The tube (10) is inserted and fixed up to the point where the cover (20) touches, and is pulled by the length of the tube cover (20) so that the tube cover (20) is opened. The tube (10) inserted into the soil includes a means for supplying oxygen contained in the air, and is configured so that when chemical oxygen supply is required or components necessary for crop growth are required, they can be supplied from an additional functional supply means (70) from the top of the tube (10). This configuration allows for the cultivation of crops without being affected by the crop cultivation environment or rainfall in open fields or greenhouse cultivation sites, and provides oxygen respiration for plant roots and creates an aerobic atmosphere in the soil, thereby providing methane greenhouse gas reduction.

[0059] FIG. 3 is an exemplary illustration of a tube (10) shaped kit for supplying oxygen to soil, wherein a rainwater inflow prevention cap (50) is formed on the upper part of the tube (10) to prevent rainwater from entering the tube (10) during the process of open-field cultivation of crops according to the present invention. The tube (10) shaped kit of FIG. 3 is composed of a pointed tube (10) in which a tube cover (20) is fixed to a hinge (30) at the lower end of the insertion part of the tube (10). In order to minimize clogging of the tube (10) due to soil inflow when the tube (10) is inserted into the soil by external force because the soil is hard, the tube cover (20) is blocked at the insertion opening of the pointed tube (10) and inserted into the soil. After inserting the pointed tube (10) into the soil, the tube cover pusher (40) is used to insert and fix the tube cover (20) inside the tube (10) until it touches. The tube (10) is configured to be pulled to the length of the tube cover (20) so that the tube cover (20) is opened, and a rainwater inflow prevention cap (50) is configured on the upper part of the tube (10) to prevent rainwater from entering the tube (10) during the process of cultivating crops in an open field. The rainwater inflow prevention cap (50) is fixed to a rainwater inflow prevention cap support (60) formed on the inner and outer upper part of the tube (10) to prevent rainwater from entering the tube (10). The tube (10) inserted into the soil includes a means for supplying oxygen contained in the air, and is configured to supply from an additional functional supply means (70) from the upper part of the tube when chemical oxygen supply is required or when components necessary for crop growth are required. This configuration allows for the reduction of methane greenhouse gas by providing oxygen respiration to plant roots and creating an aerobic atmosphere in the soil while cultivating crops, without being affected by the crop cultivation environment or rainfall in open fields or greenhouse cultivation sites.

[0061] FIG. 4 is an exemplary illustration of a tube-shaped kit for supplying oxygen to soil, wherein a U-shaped tube is formed at the top of the tube (10) to prevent rainwater from entering the tube (10) during the process of open-field cultivation of crops according to the present invention. The tube-shaped kit of FIG. 4 is composed of a pointed tube (10) in which a tube cover (20) is fixed to a hinge (30) at the lower end of the insertion part of the tube (10). In order to minimize clogging of the tube due to soil inflow when the tube (10) is inserted into the soil by external force because the soil is hard, the tube cover (20) is blocked at the insertion opening of the pointed tube (10) and the tube is inserted into the soil. After inserting the pointed tube (10) into the soil, the tube (10) is inserted and fixed using the tube cover pusher (40) until the tube cover (20) inside the tube (10) touches, and the tube (10) is then... The tube cover (20) is configured to be opened by pulling it by the length of the cover (20), and a U-shaped tube cover (80) is inserted into the upper part of the tube (10) to prevent rainwater from entering the tube (10) during the process of cultivating crops in an open field. The tube (10) inserted into the soil includes a means for supplying oxygen contained in the air, and is configured to supply from an additional functional supply means (70) from the upper part of the tube (10) when chemical oxygen supply is required or when components necessary for crop growth are required. This configuration allows for the cultivation of crops without being affected by the crop cultivation environment or rainfall in open fields or greenhouse cultivation sites, and provides oxygen respiration for plant roots and creates an aerobic atmosphere in the soil, thereby providing methane greenhouse gas reduction.

[0063] The additional function supply means (70) through the above tube (10) can supply oxygen contained in the air to the soil by means of the tube (10) inserted into the soil of the present invention, and can supply a chemical oxygen supply composition or a fertilizer supply composition into the tube (10) by means of the additional function supply means (70) inside the tube (10).

[0065] The above chemical oxygen supply composition consists of hydrogen peroxide (H2O2) or persulfate, and after inserting the tube (10) into the soil, the chemical oxygen supply composition is diluted to a concentration of 25 ppm to 5,000 ppm and supplied through the supply means (70) of additional function at the top of the tube (10). Then, as shown in Chemical Reaction Equation 1 below, the chemical oxygen supply composition supplied to the soil causes oxygen to be generated slowly over a long period by the decomposition agent of hydrogen peroxide (H2O2) or persulfate present in the soil, thereby enabling high yields of high-quality crops through oxygen respiration of plant roots, as well as converting the anaerobic soil atmosphere into an aerobic soil atmosphere, which can prevent or minimize the generation of methane, which has a greenhouse effect index 23 times higher than carbon dioxide.

[0067] Hydrogen peroxide supplied to soil (2H2O2) + Trace amounts of inorganic substances present in the soil (hydrogen peroxide decomposition catalyst) → 2H2O + Oxygen (O2)↑-------------------------<Chemical Equation 1>

[0070] The above fertilizer supply composition is intended to help plant growth by increasing the productivity of the soil over a long period of time through the composition of fertilizer supplied through the tube (10). For this purpose, the fertilizer supply composition may consist of: compost in liquid or solid form; self-sufficient fertilizers, which are natural fertilizers produced by farms such as manure, human manure, or wood ash; organic fertilizers made by composting oilseed meal, fish meal, bone meal; nitrogen fertilizers composed of ammonium sulfate, ammonium chloride, urea, calcium nitrate, ammonium nitrate, etc., which can provide leaf growth of plants; phosphate fertilizers that can help fruit growth; potassium fertilizers that can help growth and root development; compound fertilizers containing two or more of the three main fertilizer components, nitrogen (N), phosphorus (P), and potassium (K); lime fertilizers; magnesium fertilizers; silicate fertilizers; or one or more fertilizers containing trace element fertilizers, all of which may be placed inside the tube (10). It can be supplied.

[0072] When considering the need for high hardness, ductility, weldability, processing, durability, and economic feasibility, it is preferable to select and use a steel pipe for the above tube (10). When considering corrosion resistance due to chemical reactions caused by specific soil environments, it is preferable to use a tube made of copper, nickel, brass, aluminum, and various stainless steels. When considering long-term corrosion resistance, it is preferable to use a tube made of synthetic resin composed of polyethylene (PE), polybutylene (PB), polyvinyl chloride (PVC), acrylonitrile butadiene-styrene (ABS), cellulose acetate-butyrate (CAB), polyolefin, and polyesters.

[0074] Before describing the embodiments of the invention to embody the technical concept of the present invention, terms and words used in the specification or claims of the present application should not be interpreted as being limited to their ordinary or dictionary meanings, and the scope of protection of the present invention should be interpreted in a meaning and concept consistent with the technical concept of the present invention. Furthermore, the examples described in this specification are merely the most preferred embodiments of the present invention and do not represent all of the technical concept of the present invention; therefore, it should be understood that various equivalents and modifications that can replace them may exist at the time of filing the present application.

[0076] Example 1

[0077] A carbon steel tube with an outer diameter of 42.7 mm, a thickness of 3.6 mm, and a length of 500 mm was prepared, and the part to be inserted into the soil was processed into a pointed shape, and a tube was prepared in which the lid is connected to a hinge to provide the ability to close and open the lid.

[0078] To verify the methane reduction effect of the tube, an ice box measuring 240 cm × 180 cm × 140 cm was prepared, and soil, which is expected to have a complex medium due to its generally high level of contamination, was filled to 70% of the height inside the ice box. Then, groundwater was supplied to ensure water was present in the soil, and atmospheric air was not supplied to the soil for 10 days. After inserting the tube prepared in Example 1 into the soil with a push rod inserted inside, the tube was pulled out while pushing the push rod to a depth of about 10 cm. A total of 4 open tubes were inserted under conditions of uniform distribution, and the change in the redox potential of the soil was checked for 14 days.

[0080] Example 2

[0081] The procedure was performed in the same manner as Example 1 above, except that an aluminum tube with an outer diameter of 34 mm, an outer diameter of 28 mm, and a length of 500 mm was prepared, the part to be inserted into the soil was processed into a pointed shape, and a tube was prepared in which the lid is connected to a hinge to provide the ability to close and open the lid.

[0083] Example 3

[0084] The procedure was carried out in the same manner as Example 1 above, except that a stainless steel tube with a nominal diameter of 32 mm, an outer diameter of 42.7 mm, and a length of 500 mm was prepared, the part to be inserted into the soil was processed into a pointed shape, and a tube was prepared in which the lid is connected to a hinge to provide the ability to close and open the lid.

[0086] Example 4

[0087] A plain polyvinyl chloride (PVC) tube with an outer diameter of 38 mm, an inner diameter of 31 mm, and a length of 500 mm was prepared.

[0088] To verify the methane reduction effect of the tube, an ice box measuring 240 cm × 180 cm × 140 cm was prepared, and soil expected to have a low contamination level and not a complex medium was filled to 70% of the height inside the ice box. Then, groundwater was supplied to ensure water was present in the soil, and the air from the atmosphere was not supplied to the soil. The prepared tube was inserted, and the change in the redox potential of the soil was checked for 14 days.

[0090] Example 5

[0091] A plain polyethylene (PE) tube with an outer diameter of 42 mm, a thickness of 4.0 mm, and a length of 500 mm was prepared.

[0092] To verify the methane reduction effect of the tube, an ice box measuring 240 cm × 180 cm × 140 cm was prepared, and soil expected to have a low contamination level and not a complex medium was filled to 70% of the height inside the ice box. Then, groundwater was supplied to ensure water was present in the soil, and the air from the atmosphere was not supplied to the soil. The prepared tube was inserted, and the change in the redox potential of the soil was checked for 14 days.

[0094] Example 6

[0095] The procedure was carried out in the same manner as Example 1, except that 5 ml of hydrogen peroxide (Samjeonsunyak) at a concentration of 25 ppm was supplied per hour into the tube inserted into the soil.

[0097] Example 7

[0098] The procedure was performed in the same manner as Example 5, except that 2.0 ml of ammonium persulfate solution diluted to a concentration of 5,000 ppm was supplied per hour into the tube inserted into the soil.

[0100] The values ​​of the oxidation and reduction potentials of Comparative Examples 1 to 7 and Examples 1 to 7 above are shown in Table 1.

[0101] When the soil environment is an aerobic atmosphere where oxygen is present, methane is not produced; instead, carbon dioxide, which has a much lower greenhouse effect than methane, is produced, and the oxidation potential of the soil shows a positive value. Conversely, when the soil environment is an anaerobic (oxygen-free) atmosphere where oxygen is absent, methane is generated, which has a greenhouse effect index approximately 23 times higher than carbon dioxide, and the redox potential of the soil shows a negative value.

[0102] Accordingly, in order to confirm the effectiveness of the methane reduction technology based on the technology of this institute, the change in the redox potential of the soil over 14 days was verified using the KS I ISO 11271 method for measuring the redox potential of soil (field measurement method).

[0104] division Soil potential (mV) day 2 days elapsed 4 days have passed 6 days elapsed 8 days elapsed 12 days elapsed 14 days elapsed Example 1 -234 692 720 714 716 694 704 Example 2 -228 688 694 696 674 680 682 Example 3 -230 724 702 706 714 722 729 Example 4 -218 702 694 689 698 720 714 Example 5 -230 712 701 698 710 728 719 Example 6 -214 807 798 802 810 796 804 Example 7 -220 786 777 780 782 789 775

[0106] Example 8

[0107] A plain polyvinyl chloride (PVC) tube with an outer diameter of 38 mm, an inner diameter of 31 mm, and a length of 500 mm was inserted into watermelon seedlings planted in the soil of a 660 m² greenhouse at a distance of about 10 cm, and the average weight of 450 harvested watermelons was checked after a cultivation period of 120 days to compare the effects of the technology of the present invention.

[0109] Example 9

[0110] A pointed carbon steel tube prepared in Example 1 above was inserted into the soil of 20 grapevines, and the average weight of Campbell variety grapes for 20 vines was checked after a cultivation period of 150 days to compare the effects according to the technical concept of the present invention.

[0112] Comparative Examples 8–9

[0113] The procedure was performed in the same manner as Examples 8 and 9, except that the tube was not inserted into the soil.

[0115] The results of Comparative Examples 8–9 and Examples 8–9 are shown in Table 2.

[0117] Gubut Average weight of harvested crops Watermelon (kg / piece) Grapes (g / bunch) Example 8 10.6 - Example 9 - 358 Comparison Example 8 7.34 - Comparison Example 9 - 296

[0119] As shown in Table 1, in Examples 1 to 7, after preparing to prevent oxygen from the air from entering the soil and leaving it for 10 days, the soil potential was checked using the KS I ISO 11271 method for measuring the redox potential of a sheep (field measurement method). As a result, the soil developed into an anaerobic soil environment (anoxic), and the redox potential was found to be -234 to -214 mV, which suggests that methanogenesis by methanogenic bacteria in the soil can be promoted.

[0120] On the other hand, when a tube-shaped kit for reducing methane greenhouse gas in water-containing soil according to the technology of the present invention was inserted into the soil and the change in the redox potential of the soil was checked for 14 days, it was confirmed that an aerobic soil environment (oxygenated) was maintained for a long period, and a high aerobic atmosphere with a redox potential of +674 to +810 mV was observed for 14 days.

[0122] In particular, as shown in Examples 6 and 7, it was confirmed that the oxidation potential value was higher when hydrogen peroxide (H2O2) and ammonium persulfate, which are chemical oxygen supply compositions, were supplied into the tube inserted into the soil. This confirmed that in order to create a soil environment with an active aerobic atmosphere depending on the soil conditions, the greenhouse gas methane generated in the soil can be reduced by supplying a chemical oxygen supply composition according to the technical concept of the present invention.

[0124] As shown in Table 2, when a tube-shaped kit for supplying oxygen to crop cultivation sites is not inserted into the soil, the average weight of one watermelon is 7.34 kg and the average weight of one bunch of grapes is 296 g. However, when the tube-shaped kit for supplying oxygen according to the present invention is inserted into the soil, the average weight of one watermelon increases to 10.6 kg and the average weight of one bunch of grapes increases significantly to 358 g.

[0125] Therefore, it is expected that a tube-shaped kit capable of stably supplying oxygen to the soil of crop cultivation sites for an extended period can not only prevent or reduce the generation of methane greenhouse gases from the soil but also increase the potential for high-yield, high-quality crops through aerobic respiration of plant roots. This is expected to significantly contribute to generating economic benefits for farms and securing their technological competitiveness by minimizing labor while improving crop growth and increasing productivity. Explanation of the symbols

[0128] 10: Tube (pipe) 20: Tube cover 30: Hinge 40: Tube cover stick 50: Roof to prevent rainwater from entering 60: Roof support to prevent rainwater ingress 70: Means of supplying additional functions 80: U-shaped tube cover

Claims

Claim 1 A tube-shaped kit for stably supplying oxygen from the air to soil for a long period of time, wherein a hollow, plain tube (10) with both ends open, or a pointed tube (10) that is inclinedly connected by a hinge joint to one end of a hollow, plain tube (10) with both ends open so that a cover can be opened and closed, is inserted into the soil so that oxygen contained in the air is supplied into the soil through the tube (10); wherein, when additional supply of a chemical oxygen composition or fertilizer components necessary for the growth of crops is required in addition to the oxygen contained in the air through the tube (10), the chemical oxygen composition or fertilizer components are supplied from the upper part of the tube (10) inserted into the soil; and wherein, depending on whether rainwater enters the inside of the tube (10) inserted into the soil, a cap (50) for preventing rainwater inflow or a U-shaped tube cover (80) is selectively connected to or not connected to the upper part of the tube (10). A tube-shaped kit for supplying oxygen to soil and a device using the same How to use. Claim 2 A tube-shaped kit for supplying oxygen to soil, characterized in that, in claim 1, the tube (10) is one type of pipe selected from steel pipe, copper pipe, nickel pipe, brass pipe, aluminum pipe, stainless steel pipe, polyethylene (PE), polybutylene (PB) pipe, polyvinyl chloride (PVC) pipe, acrylonitrile butadiene-styrene (ABS) pipe, cellulose acetate-butyrate (CAB) pipe, polyolefin pipe, and polyester pipe. Claim 3 A tube-shaped kit for supplying oxygen to soil, characterized in that, in claim 1, the chemical oxygen composition is composed of hydrogen peroxide (H2O2) or persulfate, diluted to a concentration of 25 ppm to 5,000 ppm, and supplied through the path of an additional functional supply means (70) at the top of the tube (10). Claim 4 A tube-shaped kit for supplying oxygen to soil, characterized in that, in claim 1, the fertilizer component is selected from one or more fertilizers consisting of a liquid or solid self-sufficient fertilizer, organic fertilizer, nitrogen fertilizer, phosphate fertilizer, potassium fertilizer, compound fertilizer, magnesium fertilizer, silicate fertilizer, and trace element fertilizer.

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