KR102195026B1 - The Vegetative Soil Composition and Method of Slope Afforestation using Thereof - Google Patents

Abstract

The present invention relates to a vegetative soil composition and a construction method using the same. The eco-friendly vegetative soil composition comprises, based on 100 parts by weight of clay powder: 20-50 parts by weight of coco peat; 10-30 parts by weight of vermiculite; 10-30 parts by weight of pearlite; 10-30 parts by weight of zeolite; 10-30 parts by weight of diatomite; 10-30 parts by weight of bark; 10-30 parts by weight of rice husks; 10-30 parts by weight of leaf mold; 0.00001-2 parts by weight of a microbial agent; 5-30 parts by weight of minerals; 20-50 parts by weight of humic acid; and 10-30 parts by weight of defatted rice bran. The eco-friendly vegetative soil composition is capable of evenly growing above-ground and underground parts of plants planted on a target surface for greening, improving nutrient holding capacity, a moisturizing effect, and air permeability, and enhancing adhesion of afforestation plants and erosion resistance of the soil, thereby successfully and efficiently greening slops, and thus has the effect of creating vegetation that is stabilized continuously.

Description

The Vegetative Soil Composition and Method of Slope Afforestation using Thereof}

The present invention relates to a green soil composition and a construction method using the same, and more particularly, while uniformly growing the above-ground and underground portions of plants planted on a green soil composition, and improves retention, moisturizing power and breathability, and adhesion of green plants, The present invention relates to an eco-friendly green soil composition and a construction method using the same to increase the erosion resistance of soil so that it can be successfully and efficiently greened on slopes.

Since there is still no standard for design and construction suitable for our situation, Korea's slope greening work is only urgently focused on early greening, and is mainly constructed with exotic grasses (sheep grass). In particular, by applying the greening method indiscriminately without analyzing the ecological environment of the damaged slope, most of the green plants are killed within 2 to 3 years and the slope is re-degraded.

In addition, foreign weed species (sheep grass) for greening on slopes have the potential to spread to the surrounding ecosystem, and if they dominate, they interfere with the natural invasion of surrounding vegetation, and if they do not match the climate of Korea, they are naturally culled within several years. Need

When civil works such as opening a road or building a residential site are carried out, a soil cut surface is generated. The soil cut surface is made of hard rock, soft rock, weathered rock, and other rock layers, making it difficult to grow plants. In other words, it is difficult to create vegetation because there is too little or no soil layer on the incision surface.

Moreover, since the incision surface is steep and the vegetation is not well formed, there is a very high risk of erosion and collapse due to rain or storm.

In order to solve this erosion and collapse problem, structures such as retaining walls or blocks were constructed with concrete on the cut surface of the soil. These structures are very difficult to construct on rock cuts or steep slopes without soil, and there is a problem that they do not harmonize with the surrounding natural environment for aesthetic reasons.

Due to the above-described problem, recently, an eco-friendly method of artificially providing an environment in which vegetation can be created on the incision surface of the soil has been studied. For example, there is a method of attaching a green soil composition capable of smooth germination and growth of plants to a soil cut surface.

Green soil must have excellent adhesion to the incision surface of the soil, must be robust against external environments such as rain or storm, and vegetation must be formed quickly to stabilize the slope.

In addition, the main material of the dry method, which is one of the existing general slope greening methods, is a method of spraying vegetation base material with air using sewage and pulp sludge processed from industrial waste, and the material is a method of plant growth after the plant grows. Rather, there is a case of transmitting, and there are various problems with the dry method after construction, a dropping phenomenon due to the self-weight of the artificial soil thickness, a plant death occurring within 2 to 3 years, and the resulting artificial soil flow.

Accordingly, the green soil construction method is being attempted as a greening construction method that artificially creates an environment in which plants can grow on the soil cut surface through an eco-friendly construction method.

This green soil construction method is a construction method that creates artificial conditions in which plants can grow naturally by spraying green soil produced to have good moisturizing power and contain a large amount of nutrients on the soil incision surface in a thickness of 1 to 10 cm. Therefore, in the application of the green soil construction method, in order to be suitable for the restoration goal considering the natural environment in the future, we boldly escape from the greening method focusing on exotic grasses (sheep grass), secure the stability of the slope damaged by the construction, and consider the surrounding natural environment. It is necessary to improve the aesthetics and scenery, to create a stable vegetation continuously, and to have a vegetation structure that is advantageous for reducing carbon dioxide.

As such a prior art, Korean Patent No. 10-1224632 discloses an eco-friendly green soil composition using an eco-friendly material and a construction method using an eco-friendly green soil composition.

The technical problem to be solved in the present invention is to uniformly grow the above-ground and underground parts of plants planted on the target surface for greening by using eco-friendly materials, while improving the retaining power, moisturizing power and breathability, adhesion of green plants, and erosion resistance of the soil. It is intended to provide an eco-friendly green soil composition that can continuously create stable vegetation by successfully and efficiently performing greening construction on the slope by increasing it.

In addition, another technical problem to be solved in the present invention is to provide a method of greening a target surface using the eco-friendly green soil composition.

In order to solve the above technical problem, in the present invention, 20 to 50 parts by weight of coco peat, 10 to 30 parts by weight of vermiculite, 10 to 30 parts by weight of pearlite, 10 to 30 parts by weight of zeolite, 10 to 10 parts by weight of diatomaceous earth 30 parts by weight, bark 10 to 30 parts by weight, rice husk 10 to 30 parts by weight, side leaf 10 to 30 parts by weight, microbial preparation 0.00001 to 2 parts by weight, minerals 5 to 30 parts by weight, humic acid 20 to 50 parts by weight, and degreasing steel It provides an eco-friendly green soil composition containing 10 to 30 parts by weight.

In order to solve the above-described other technical problem, the present invention provides a construction method comprising spraying the eco-friendly green soil composition onto a greening target surface.

The eco-friendly green soil composition according to the present invention uniformly grows the above-ground and underground parts of plants planted on the target surface for greening construction, improves the reserve power, moisturizing power, and ventilation, and increases the adhesion of green plants and the erosion resistance of the soil. It has the effect of continuously creating stable vegetation by performing greening on the slope.

The eco-friendly green soil composition of the present invention comprises 20 to 50 parts by weight of coco peat, 10 to 30 parts by weight of vermiculite, 10 to 30 parts by weight of pearlite, 10 to 30 parts by weight of zeolite, 10 to 30 parts by weight of diatomaceous earth, and bark 10 to 30 parts by weight, rice husk 10 to 30 parts by weight, side leaf 10 to 30 parts by weight, microbial preparation 0.00001 to 2 parts by weight, minerals 5 to 30 parts by weight, humic acid 20 to 50 parts by weight, and degreasing steel 10 to 30 parts by weight It characterized in that it includes.

The soil powder according to the present invention may be any conventional soil powder in the art, but it is preferable to use soil powder, more preferably loess powder, weathered basalt soil, or a mixture thereof.

Here, the soil powder is included in the green soil composition to provide organic matter, ventilation, etc. for the growth of microorganisms and plants.

In the eco-friendly green soil composition according to the present invention, the content of the remaining ingredients other than soil powder is based on 100 parts by weight of soil powder.

The raw material of the cocopeat (COIR) is a fibrous material of tropical palm trees and is a chemically inert (a property that does not actively cause a chemical reaction) due to its high content of [lignin]. It is a non-toxic, odorless material that is resistant to microbial penetration, stable oxidation conditions, and contains significant organic nutrients and trace elements. The water holding capacity is very high, 6 to 9 times the weight of the building, and the amount of voids (the gap filled with air or water between soil particles) is good at 96%. The particle size is 0.1~0.4mm, the vapor phase rate is 12~15%, and the effective moisture content is 25~28%. The top soil using this is characterized by stable physical and chemical properties, and excellent workability due to its very light weight compared to other materials. Although it was introduced later than peat moss in Korea, it is well received as a material that can be used casually from large-scale seedlings to small-scale farmers, and the farm household supply rate is very high.

In the eco-friendly green soil composition of the present invention, the coke peat is used in an amount of 20 to 50 parts by weight based on 100 parts by weight of soil powder. At this time, if the amount of coke peat used is less than 20 parts by weight, the moisturizing power of green soil is not satisfactory, and if it exceeds 50 parts by weight, there is a concern that the water holding power may be too high.

Vermiculite (vermiculite) is an aluminum silicate gemstone (a material produced by the deterioration of biotite), mainly produced in South America and the United States, containing magnesium and iron, and treated with high heat at 1,000°C to increase the volume by 10-15 times. It is artificial soil for gardening. The weight is 1/5 of the sand and the moisture absorption capacity is 3 times that of the sand, so it is suitable for sowing soil. In particular, it is an ideal soil that does not have to worry about the occurrence of pests and weeds, has abundant water-retaining power and little heat conduction.

In the eco-friendly green soil composition of the present invention, the vermiculite is used in an amount of 10 to 30 parts by weight based on 100 parts by weight of soil powder. At this time, if the amount of vermiculite used is less than 10 parts by weight, the moisturizing power of green soil is not satisfactory, and if it exceeds 30 parts by weight, there is a concern that the water holding power may be too high.

The pearlite is a white, light particle made by swelling more than 10 times that of ore by high heat treatment at 760°C. It has good ventilation and water retention, so that it retains moisture for a long time in crops requiring transplantation. Since it is maintained, it is an artificial soil that facilitates the establishment of roots. The weight is about 86% lighter than sand, so it is easy to move when watered, and when mixed with other soil materials, it contains adequate air and moisture to soften the soil, so the growth of fine roots is good. On the other hand, there is almost no base substitution capacity, so there is no bore ability. It is used as a soil modifier to increase soil porosity, and is also used as an auxiliary material for horticultural soil.

In the eco-friendly green soil composition of the present invention, the perlite is used in an amount of 10 to 30 parts by weight based on 100 parts by weight of soil powder. At this time, if the amount of perlite used is less than 10 parts by weight, the air permeability of green soil is not satisfactory, and if it exceeds 30 parts by weight, there is a concern that the air permeability may be too high.

The zeolite is a fine porous mineral of feldspar and has excellent water holding power, bore retention and drainage power, and has high adsorption power of harmful gases and harmful substances. In addition, since it prevents soil acidification and supplies nutrients such as K, Mg, and Ca, it is used as a soil conditioner, fertilizer mixture, and extender.

In the eco-friendly green soil composition of the present invention, the zeolite is used in an amount of 10 to 30 parts by weight based on 100 parts by weight of earth powder. At this time, if the amount of zeolite used is less than 10 parts by weight, the retaining power of green soil is not satisfactory, and if it exceeds 30 parts by weight, there is a concern that the retaining power will be too high.

The diatomaceous earth is a grayish-white sediment formed by the remains of single-celled aquatic plants called diatoms sinking in a lake or sea. Most of them are made of amorphous silica. They are physicochemically stable inorganic substances that are porous, lightweight, have excellent water absorption, water holding power, and retaining power, and retain nutrients and then gradually elute them, and have harmful gas removal and insecticidal effects.

In the eco-friendly green earth composition of the present invention, the diatomaceous earth is used in an amount of 10 to 30 parts by weight based on 100 parts by weight of earth powder. At this time, if the amount of diatomaceous earth used is less than 10 parts by weight, the retaining power of green soil is not satisfactory, and if it exceeds 30 parts by weight, there is a concern that the retaining power may be too high.

The bark is composted from wastes from the lumber industry or the pulp industry and is relatively inexpensive, but before use, it must undergo a corrosion process to remove growth-inhibiting substances such as acetic acid and lower the C/N rate. The substitution capacity is also very high. However, it is difficult to purchase the same material because the quality of the product is different depending on the kind of trees used as raw materials and the processing process, and there is a drawback that it takes a lot of effort and time for decomposition.

In the eco-friendly green soil composition of the present invention, the bark is used in an amount of 10 to 30 parts by weight based on 100 parts by weight of soil powder.

The rice husk is difficult to process due to its high content of lignin and silicic acid, but has an advantage of high decomposition stability. The absorption rate is lower than that of peat moss, but can be increased depending on the shape or size of the processed particles, but has excellent ventilation. However, the cation substitution capacity is low, the pH is constantly high, and the self-binding force is low, so there is a disadvantage in that the formability is somewhat inferior in crops such as peppers with little development of roots.

In the eco-friendly green soil composition of the present invention, the rice husk is used in an amount of 10 to 30 parts by weight based on 100 parts by weight of the soil powder. At this time, if the amount of rice husk used is less than 10 parts by weight, the air permeability of green soil is not satisfactory, and if it exceeds 30 parts by weight, there is a concern that the air permeability is too high.

The side leaves are made by decaying fallen leaves and are made by depositing them in a mountainous area or artificially. When used in combination with other soil or mixed soil, drainage and ventilation are good, and the soil is expanded and softened to maintain its physical properties for a long time. . As a material for fallen leaves, thick oak, oak, and chestnut are ideal. The fallen leaves of conifers contain terepin oil, which is harmful to the crop half, and bamboo leaves are not good because there are many occurrences of white dog disease and scleroderma.

In the eco-friendly green soil composition of the present invention, the side leaf is used in an amount of 10 to 30 parts by weight based on 100 parts by weight of soil powder.

The microbial preparation according to the present invention promotes the decomposition of various organic substances such as miscellaneous pollutants and various environmental pollutants existing in the soil through direct/indirect actions, thereby improving the physical/chemical properties of the soil and promoting the granulation of the soil. As a result, it not only promotes the growth of crops, but also plays a role in healthy soil, which is the basis of crop production.

Preferred microbial agents are not particularly limited, but recommended are Rhodopseudomonas capsulata, Lactobacillus plantarum, Nitrosomonas europea, and Nitrobacter Winogradsky. winogradskyi), Rhodobacter azotoformans, or at least one mixture selected from these is preferably used, but it is recommended to use those obtained by naturally thawing cryopreserved microorganisms.

Specifically, the microbial preparation according to the present invention may contain a fungus capable of solubilizing phosphoric acid and insoluble nutrients, and the fungi decompose organic matter and contribute to the uniform growth of crops.

Preferred as such a microorganism preparation may be selected from one or more microorganisms of the genus Aspergillus, genus Rhizopus, and genus Bacillus, and the microorganism of the genus Aspergillus is most preferably an Aspergillus niger (KACC 93025).

The Aspergillus niger (KACC 93025) can decompose poorly soluble phosphoric acid in the soil into free phosphoric acid, thereby solving crop cultivation disorders caused by salts in which poorly soluble phosphate is accumulated, and included in the main ingredient material. It plays a role in decomposing salts.

The preferred amount of the microbial preparation can be changed according to the user's selection, but it is recommended that the amount is 0.00001 to 2 parts by weight based on 100 parts by weight of soil powder.

The mineral material according to the present invention is for supplying various trace elements absolutely necessary for the growth and fruiting of crops, and any minerals conventional in the art for this purpose may be used.

Preferred minerals may be dolomite, zeolite, biotite, phyllite, elvanite, vermiculite, bulite, silicate, seralite, or a mixture of at least one selected from these.

In a specific embodiment, the mineral material according to the present invention may be processed mineral material. In this case, a mineral processed by a conventional mineral processing method in the art may be used, but it is recommended to use at least one or more mixtures selected from zeolite, biotite, phyllite, elvanite, vermiculite, pyrite, silicate, seraite, or 200 to 240. A grinding step of grinding with a mesh; A mixing step of stirring and mixing the pulverized mineral; A mineral heat treatment step of heat-treating the mixed mixture; And a cooling step of cooling the heat-treated mixture at room temperature. In this case, the heat treatment step includes heating at a temperature of 150 to 200°C for 3 to 5 minutes.

The preferred amount of minerals can be changed according to the user's selection, but it is preferably 5 to 30 parts by weight based on 100 parts by weight of earthen powder.

The humic acid according to the present invention decomposes/reduces salinity remaining in the ground, inhibits the decomposition action of microorganisms in the soil, thereby increasing the spawn of microorganisms, thereby ultimately increasing the curing and recovery ability of the soil. Any humic acid commonly used in the art may be used.

In particular, the humic acid according to the present invention is a lignin protein complex, where organic matter applied to the soil is decomposed by various microorganisms, and those that are easily degraded among the original tissues are decomposed and disappeared, and the remaining material is modified or synthesized in a certain form of brown or dark brown. It can be said that it is a complex substance in the colloid that is not present.

Looking at the function of these humic acids on the soil, humic acid has a very high cation substitution capacity of 200 to 600 me/100kg, so it is very effective in improving the bore capacity, and its high buffering capacity is effective in solving the problem of salt accumulation in the soil, and its high water holding capacity reduces drought damage. It is effective in improving the soil physical properties through the promotion of the formation of a group structure of the soil, and has the function of increasing the activity by feeding the useful soil microorganisms.

Moreover, the humic acid improves the germination rate of seeds in crop production, improves the germination rate, and also functions to stimulate the development of microflora in the soil.Although humic acid itself is not a fertilizer, it acts as a fertilizer adjuvant. It acts to help trace elements move from soil to plants.

The preferred amount of humic acid can be changed according to the user's selection, but it is preferable that the amount is 20 to 50 parts by weight based on 100 parts by weight of soil powder.

The degreasing steel according to the present invention is to support the nutrition of plants by being decomposed into organic matter by microorganisms in the soil, and any conventional degreasing steel in the art used for this purpose may be used, but preferably The oil left by extracting the oil from the rice bran is used, and the amount is preferably 10 to 30 parts by weight based on 100 parts by weight of the soil powder.

In particular, the skim steel is used after oil is extracted from rice bran to remove the oil component, but still contains multiple nutrients such as various protein starches, polysaccharides, vitamins, minerals, and fiber.

The eco-friendly green soil composition according to the present invention may further include one or more additives according to the following specific aspects.

As a specific embodiment, the eco-friendly green soil composition according to the present invention may further include 5 to 20 parts by weight of brown sugar based on 100 parts by weight of soil powder in order to suitably match the C/N ratio (Carbon/Nitrogen ratio) of the composition.

Here, the C/N ratio refers to the ratio of the weight of carbon (C) to the weight of nitrogen (N) contained in an organism or organic matter.

In another specific aspect, the eco-friendly green soil composition according to the present invention further comprises 10 to 40 parts by weight of an extender based on 100 parts by weight of soil powder in order to improve the granulation, ventilation, and mechanical action of the soil as a carrier material without activity. Can include.

The preferred bulking agent may be any conventional bulking agent in the art, but it is recommended to use silica sand, silicate, sand, vermiculite, or a mixture thereof.

In another specific aspect, the eco-friendly green soil composition according to the present invention uses carboxymethyl chitosan based on 100 parts by weight of soil powder in order to promote the growth of crops by improving the disease resistance of crops by showing excellent antibacterial activity in the green soil composition. It may further contain 1 to 10 parts by weight, and the carboxymethyl chitosan is a chitosan derivative and is usually extracted from the shells of crustaceans such as crabs and shrimps.

As another specific embodiment, the eco-friendly green soil composition according to the present invention may further include 1 to 20 parts by weight of fermented grain based on 100 parts by weight of soil powder to enhance the activity of microorganisms present in the soil.

In another specific aspect, the eco-friendly green soil composition according to the present invention may further include 0.1 to 1 part by weight of lime goto based on 100 parts by weight of soil in order to correct the acidity of the soil and supplement the potassium component in the soil.

As for the construction method using the eco-friendly green soil composition according to the present invention having such a configuration, any conventional green soil composition construction method in the art may be used, but it will be described for ease of explanation of the present invention.

In the present invention, 20 to 50 parts by weight of coco peat, 10 to 30 parts by weight of vermiculite, 10 to 30 parts by weight of pearlite, 10 to 30 parts by weight of zeolite, 10 to 30 parts by weight of diatomaceous earth, 10 to 30 parts by weight of bark Eco-friendly green soil containing parts, rice husk 10 to 30 parts by weight, side leaf 10 to 30 parts by weight, microbial preparation 0.00001 to 2 parts by weight, minerals 5 to 30 parts by weight, humic acid 20 to 50 parts by weight, and 10 to 30 parts by weight of degreasing steel It provides a construction method comprising spraying the composition onto the surface to be greened.

Here, the construction surface on which the green soil composition is sprayed is not limited to the slope surface, and it is possible to construct on various construction surfaces according to the user's selection.

In addition, it is recommended to use a method commonly used in the art for the method of spraying the green soil composition onto the surface to be greened, for example, the slope.

Hereinafter, the present invention will be described in detail through examples. However, the following examples are for illustrative purposes only and are not intended to limit the scope of the present invention by these examples.

<Example 1>

30 parts by weight of coco peat, 20 parts by weight of vermiculite, 20 parts by weight of pearlite, 20 parts by weight of zeolite, 20 parts by weight of diatomaceous earth, 20 parts by weight of bark, 20 parts by weight of rice husk, 20 parts by weight of side leaf, microbial preparation 1 An eco-friendly green soil composition was prepared by mixing and mixing parts by weight, 20 parts by weight of minerals, 30 parts by weight of humic acid, and 20 parts by weight of degreasing steel.

<Example 2>

40 parts by weight of coco peat, 10 parts by weight of vermiculite, 30 parts by weight of pearlite, 10 parts by weight of zeolite, 20 parts by weight of diatomaceous earth, 20 parts by weight of bark, 10 parts by weight of rice husk, 20 parts by weight of side leaf, microbial preparation 1 An eco-friendly green soil composition was prepared by mixing and mixing parts by weight, 20 parts by weight of minerals, 20 parts by weight of humic acid, and 20 parts by weight of degreasing steel.

<Example 3>

30 parts by weight of coco peat, 20 parts by weight of vermiculite, 30 parts by weight of pearlite, 20 parts by weight of zeolite, 10 parts by weight of diatomaceous earth, 10 parts by weight of bark, 10 parts by weight of rice husk, 20 parts by weight of side leaf, microbial preparation 1 An eco-friendly green soil composition was prepared by mixing and mixing parts by weight, 20 parts by weight of minerals, 20 parts by weight of humic acid, and 20 parts by weight of degreasing steel.

<Comparative Example 1>

A green soil composition was prepared in the same manner as in Example 1, except that the coco peat was not used.

<Comparative Example 2>

A green soil composition was prepared in the same manner as in Example 1, except that the pearlite was not used.

<Comparative Example 3>

A green soil composition was prepared in the same manner as in Example 1, except that the zeolite was not used.

<Comparative Example 4>

A green soil composition was prepared in the same manner as in Example 1, except that the humic acid was not used.

<Test Example 1>

The eco-friendly green soil compositions prepared according to Examples 1 to 3 and Comparative Examples 1 to 4 were mixed and blended in each composition ratio and sprayed onto each of the slopes of 10 m ² .

Here, the mounting thickness was selected and constructed in consideration of geology, rock quality, soil condition, and natural environment according to the construction area.

Then, native herbaceous plants such as sheep grass, cornflower, and cosmos, and woody plants such as Albizia julibrissin and Ssari were planted in the same manner, and germination and growth of plants were confirmed for about one month, and are shown in Table 1.

In addition, the compressive strength and adhesion strength of the construction surface constructed according to the above example were measured and shown in Table 1.

Here, the compressive strength was performed according to the test method according to KS F 2314 (2001), and the adhesion strength was performed according to the test method according to KS F 4716 (2006).

First germination date (time) Survival rate (%)/31 days Compressive strength (N/㎟) Adhesion strength (N/㎟) Example 1 37 98 0.28 0.15 Example 2 38 97 0.25 0.13 Example 3 36 97 0.26 0.14 Comparative Example 1 35 56 0.12 0.09 Comparative Example 2 34 65 0.13 0.08 Comparative Example 3 36 58 0.12 0.09 Comparative Example 4 36 61 0.13 0.07

As shown in Table 1, the eco-friendly green soil compositions according to Examples 1 to 3 showed good survival rates, compression strength of at least 0.25 N/mm2, and adhesion strength of at least 0.13N/mm2, It can be seen that it has a strength enough to resist external impact or rain, and has a very good adhesion than general soil and conventional dry, wet, and semi-wet materials. On the other hand, in the case of Comparative Examples 1 to 4, it was found that the survival rate was low and the compressive strength and adhesion strength were low.

As described above, those skilled in the art to which the present invention pertains will understand that the present invention can be implemented in other specific forms without changing the technical spirit or essential features. Therefore, all the embodiments described above are illustrative and should be understood as non-limiting. The scope of the present invention should be construed as including all changed or modified forms derived from the meaning and scope of the claims to be described later rather than the above detailed description, and equivalent concepts thereof.

Claims (2)

Based on 100 parts by weight of earthen powder, 20 to 50 parts by weight of coco peat, 10 to 30 parts by weight of vermiculite, 10 to 30 parts by weight of pearlite, 10 to 30 parts by weight of zeolite, 10 to 30 parts by weight of diatomaceous earth, 10 to 30 parts by weight of bark, Rice hull 10 to 30 parts by weight, side leaf 10 to 30 parts by weight, microbial preparation 0.00001 to 2 parts by weight, minerals 5 to 30 parts by weight, humic acid 20 to 50 parts by weight, degreasing steel 10 to 30 parts by weight and silica sand, sand, vermiculite Or 10 to 40 parts by weight of an extender consisting of a mixture thereof,
The microbial preparation is at least one selected from microorganisms of the genus Aspergillus, genus Rhizopus, and genus Bacillus,
The skim steel is an eco-friendly green soil composition to remove oil components by extracting oil from rice bran.
A construction method comprising spraying the eco-friendly green soil composition according to claim 1 on a greening target surface.