KR101436611B1 - Soil conditioner for improving sodium accumulation in soil using macroporus inorganic mineral - Google Patents

Abstract

The present invention relates to a process for the production of microparticles comprising macroporous inorganic mineral, perlite, pulverized cocopeat, gypsum, amino acid liquid and oxalic acid as active ingredients The present invention provides a soil amendment agent for improving salt-accumulated soil, a method for producing the same, and a method for improving the salt-accumulated soil using the soil amendment agent.

Description

TECHNICAL FIELD [0001] The present invention relates to a soil improvement agent for improving the accumulation of salts in a soil using a porous sintered mineral,

The present invention relates to a process for the production of microparticles comprising macroporous inorganic mineral, perlite, pulverized cocopeat, gypsum, amino acid liquid and oxalic acid as active ingredients The present invention provides a soil amendment agent for improving salt-accumulated soil, a method for producing the same, and a method for improving the salt-accumulated soil using the soil amendment agent.

Salt accumulation is a phenomenon in which salinity is accumulated on the surface layer due to low amount of salinity due to evaporation and low amount of sediment from the upper layer to the lower layer of dry and semi-dry area with low rainfall and high amount of evaporation.

The management of salt accumulation during the cultivation of the cabbage in the facility house is one of the series problems that are difficult to solve as the series becomes longer. As for the house cultivation, the crops are grown intensively in the facility compared to the non - cultivation, and the chemical fertilizer and livestock manure are many, so that most of the nutrients are left in the soil and the salt accumulation occurs. In the house condition, which is not influenced by rainfall, the movement of water from the surface to the basement is weak, and the water moves up and down in the soil layer by the irrigation water, so that the leaching of fertilizer nutrients in the soil is decreased and remains in the soil. As the water moves up and down in the soil layer, the salts contained in the soil layer accumulate on the topsoil, causing problems of salt obstruction. In plantation cultivation areas, cropping is frequently occurred in a closed environment, and excessive use of high-concentration chemical fertilizer and composting of livestock complements cropping.

Salinity accumulation inhibits the growth of crops and causes loss of yield and quality. The major components involved in the increase in salt concentration are NO ₃ ^- , Cl ^- , and SO ₄ ^{2 -} . It is important to pay attention to salt damage when using a large amount of these substances. Farmers continue to increase their fertilization to further absorb nutrients, which in turn causes a vicious cycle in which soil salt concentrations become higher, and nutrients can accumulate in the soil and have a detrimental effect on the environment.

In house cultivation, salt accumulation is fateful, but attention to fertilizer type and fertilizer amount can delay salt accumulation rate. Usually, the salt removal is to lower the salt concentration of the soil. There are two main methods to remove salts: water removal using salts, salt removal using crops, and salt removal using organic materials.

It is difficult to expect the effect of removal of salt from water when a large amount of clean water is secured but the improvement of soil physical properties does not take priority. Removal of salt by the decontamination crop affects the decontamination effect of the crop and removal timing. Removal of salts by using organic matter changes the removal efficiency according to the carbonitride ratio, and in some cases, it increases the salt concentration or acidifies the soil. And the removal of the coatings causes the salt concentration to be greatly reduced when the salt - accumulated soil is exposed to natural rainfall. Therefore, there is a method of lowering the concentration of the salt in the soil by removing the coating in the summer in which it is difficult to cultivate the crop at a high temperature, but this is not a desirable method because of the large economic loss caused by not growing the crop. In addition, the salt removal method can reduce the salt concentration by the method of flounder, inversion of the subsoil, and the soil, but proper soil remediation agent treatment is necessary to increase the effect.

Therefore, it is necessary to develop a soil remediation agent for desalting to improve the physico - chemical characteristics of soils by effectively reducing the salts accumulated in the soil in various ways as well as applying the conventional salt removal method. Therefore, there is a need for a soil remediation agent for effectively removing accumulated salts from the soil and preventing the removed salts from raising the salinity of the soil by raising the capillary or reusing it.

Korean Patent Laid-Open Publication No. 2006-0008142 discloses a method for producing a salt accumulation-improving agent in soil, but is different from a soil-improving agent composition for improving salt-accumulated soil using the porous sintered mineral of the present invention.

It is an object of the present invention to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a method for effectively reducing the concentration of salts in a salt-accumulated soil by using a macroporus inorganic mineral, perlite, pulverized cocopeat, , Gypsum gypsum, amino acid liquid and oxalic acid. The present invention also provides a soil conditioner for soil improvement.

In order to solve the above-mentioned problems, the present invention relates to a method for producing a microporous sintered body comprising macroporous inorganic mineral, perlite, pulverized cocopeat, gypsum, amino acid liquid and oxalic acid ) As an active ingredient. The present invention also provides a soil conditioner for soil improvement.

The present invention also provides a method for producing the soil amendment agent for improving the salt-accumulated soil.

In addition, the present invention provides a method for improving a salt-accumulated soil comprising treating the salt-improving soil for improving the salt-accumulated soil.

The soil improvement agent of the present invention is economically advantageous because it substitutes industrial by-product resources which are porous sintered minerals (macroporus inorganic minerals (MIM)) having surface voids. The porous sintered mineral forms stabilized pores in the soil according to the particle size control, thereby maximizing the decontamination efficiency by acting as a selective moisture transfer path, and also preventing recolonization due to capillary rise. In particular, amino acids and other plant nutrients, even when nutrients are consumed in the MIM, remain in the soil, not only improving the soil physical properties but also improving the soil permeability.

In addition, porous sintered minerals bearing sulfate gypsum and amino acid increase the hydraulic conductivity in the same soil water potential and increase the downward mobility of the accumulated salts in the soil. When the granular soil conditioner is applied to the soil, it gradually dissolves in the form of water in the unsaturated soil moisture, and it supplies 17 amino acids and trace elements during the plant growth period to promote root growth as well as promoting root growth.

Also, the soil amendment agent of the present invention can effectively improve the salt accumulation on the salt-accumulated soil due to the over-concentration of organic matter. Also, in the case of farms with high reclaimed land or soil acidity, it also plays a role of lowering soil acidity, and amino acid in the soil conditioner plays a role to increase nitrate nitrogen content moving from the soil to the roots.

FIG. 1 is a graph comparing the characteristics (a) of the salt distribution according to the depth of the salt-accumulated soil and the salt distribution characteristic (b) according to the soil depth after treating the soil conditioner of the present invention with the salt-accumulated soil.

In order to accomplish the object of the present invention, the present invention provides a method for producing a porous sintered mineral, comprising the steps of: mixing a mixture of a macroporous inorganic mineral, perlite, pulverized cocopeat, gypsum, amino acid liquid and oxalic acid oxalic acid) as an active ingredient.

The macroporous inorganic mineral (MIM) was prepared by adding a sieve to a selected filler with a particle size of a certain range and then sieving the mixture at a temperature of 650 ° C for about 20 minutes, And then processed into an embedding material having a particle size that has passed through. In order to utilize surface voids present on the surface of porous sintered minerals for the purpose of enhancing moisture and nutrient holding function, when selected MIM is loaded on amino acid liquid (AAL), it is converted into functional porous body, I have. The porous sintered mineral may be, but is not limited to, washed coal bottom ash (CBA).

The perlite can be used as a material having a particle diameter of 0.5 mm or less to be treated as waste during the manufacturing process. The weight of the soil improving agent and the ratio of the pore formation during soil treatment can be increased to facilitate water movement, thereby improving drainage and ventilation And maintain the warmth in the case of the facility house.

The pulverized cocopeat may be obtained by pulverizing a raw material and passing the pulverized cocopeat through a 2 mm sieve. It not only increases surface area and material elution capacity per unit weight, but also increases water holding capacity, breathability, drainage and maintains elasticity.

The gypsum sulfate was dried and then converted to a total weight ratio. It plays a role in increasing calcium and sulfate ion supply ability.

The amino acid liquid was used to convert a solid gelatin raw material into a liquid state amino acid. It plays a role of supply of persistent nitrogen and 17 kinds of amino acids in the soil.

The oxalic acid, which is a kind of organic acid, is a crystalline powder having two carboxyl groups and is an organic acid of strong acid upon hydrolysis.

Preferably, the soil amendment agent for improving the salt-accumulated soil of the present invention comprises 30 to 36 parts by weight of macroporus inorganic mineral, 45 to 55 parts by weight of perlite, 15 to 19 parts by weight of pulverized cocopeat, 1 to 3 parts by weight of gypsum sulfate, 1 to 3 parts by weight of an amino acid liquid and 0.05 to 0.15 parts by weight of oxalic acid as an active ingredient ,

More preferably, 33 parts by weight of a porous sintered mineral (macroporus inorganic mineral), 50 parts by weight of perlite, 17 parts by weight of pulverized cocopeat, 2 parts by weight of gypsum gypsum , 2 parts by weight of an amino acid liquid and 0.1 parts by weight of oxalic acid as an active ingredient.

The present invention also relates to

(a) 30 to 36 parts by weight of a macroporus inorganic mineral and 45 to 55 parts by weight of perlite are mixed with 1 to 3 parts by weight of gypsum gypsum and 15 to 30 parts by weight of a pulverized cocopeat, 19 to 10 parts by weight of a binder resin; and sintering the mixture at 600 to 700 占 폚 for 10 to 30 minutes;

(b) stirring the gelatin powder at 55 to 65 ° C for 1 to 3 hours at 25 to 35 rpm to prepare an amino acid liquid;

(c) 1 to 3 parts by weight of the prepared liquid amino acid in step (b) and 0.05 to 0.15 part by weight of oxalic acid to prepare a mixture; And

(d) spraying the mixture of step (c) onto the sintered mixture of step (a) and drying the mixture at 180 to 220 ° C.

The method for producing the soil improving agent for improving salt-accumulated soil of the present invention is preferably

(a) A mixture of 33 parts by weight of a macroporus inorganic mineral and 50 parts by weight of perlite was mixed with 3 parts by weight of gypsum gum and 17 parts by weight of pulverized cocopeat. Lt; 0 > C for 20 minutes;

(b) stirring the gelatin powder at 60 rpm for 2 hours at 30 rpm to prepare an amino acid liquid;

(c) mixing 2 parts by weight of the prepared liquid amino acid in step (b) and 0.1 part by weight of oxalic acid to prepare a mixture; And

(d) spraying the mixture of step (c) onto the sintered mixture of step (a) and drying at 200 ° C.

The present invention also provides a method for improving a salt-accumulated soil comprising treating the salt-improving soil for improving the salt-accumulated soil.

The method for improving the salt-accumulated soil of the present invention is preferably such that the soil improvement agent for improving the salt-accumulated soil can be treated at 4400 to 5200 kg per 8-12a of salt-accumulated soil area, more preferably 4800 kg can do. More specifically it is preferred that the area 10a and the depth of 20 cm and the processing on the basis of about 240 ton of bulk density 1.2 g / cm ³ of salt accumulation soil to the salt accumulation soil amendment for soil improvement of the present invention 2% .

Hereinafter, the present invention will be described in detail by way of examples. However, the following examples are illustrative of the present invention, and the present invention is not limited to the following examples.

Manufacturing example  1: Manufacture of soil conditioner for soil improvement

(a) To a mixture of 33 kg of washed coal bottom ash (CBA) and 50 kg of perlite (P), 2 kg of sulfuric acid gypsum and 17 kg of pulverized cocopeat (PC) And sintered in a painting furnace at 650 ° C for about 20 minutes.

(b) Gelatin powder was added to a heated water bath and stirred at 60 rpm for 2 hours at 30 rpm to completely dissolve the gelatin powder and convert it into a water-soluble amino acid liquid.

(c) 2 kg of the converted liquid amino acid of step (b) and 0.1 kg of oxalic acid were mixed to prepare a mixture.

(d) The mixture of step (c) is sprayed on the sintered mixture of step (a), adsorbed on the surface of the mixture of step (a), and dried at 200 ° C.

Physicochemical characteristics of raw materials Raw material pH
(1: 5) EC
(dS m ^-1 ) CEC
(cmol kg ^-1 ) BD
(g cm ^-3 ) OM T-N NO ₃ -N NH ₄ -N Av.P ₂ O ₅ Ex.Cations (cmol _c L ^-1 ) (mg L ^-1 ) Ca K Mg Na (%) Na MIM 7.8 0.15 8.5 1.04 0.1 ND ND ND ND ≪ 0.1 ≪ 0.1 ≪ 0.1 ≪ 0.1 P 7.6 0.018 7.0 0.13 0.6 0.0 0.2 1.0 5.7 0.8 0.0 0.2 2.1 PC 6.48 0.5 31.46 0.16 91 1.81 0.4 2.8 33.1 7.3 10.7 8.4 8.9

EC (electrical conductivity), CEC (cation exchange capacity), BD (bulk density), OM (organic matter), TN (total nitrogen), NO ₃ -N NH ₄ -N (ammonia nitrogen), Av.P ₂ O ₅ (average phosphoric acid content), Ex.Cations (substitutional cation), ND (undetected)

Example  One: Soil improvement agent  Physico-chemical properties of salt-accumulated soils by treatment

The physicochemical properties of the salt-accumulated soil with high salt concentration used in the experiment are shown in Table 2 below. After the soil amendment agent of the present invention was treated with the salt-accumulating soil having physicochemical characteristics as shown in Table 2, the distribution of the salt in the soil was analyzed by the electric conductivity, which is a salt accumulation index. As a result, it was confirmed that the soil amendment agent of the present invention can be effectively used as an amendment agent for the improvement of salt accumulation soil by reducing the electric conductivity of the upper soil layer (FIG. 1).

Physicochemical properties of saline soils
Soil pH
(1: 5) EC
(dS m ^-1 ) OM (g kg ^-1 ) CEC
(cmol _c kg ^-1 )
ESP (%) Particle size distribution
(%) Clay Silt Sand Surface 7.7 33.9 1.5 7.11 45.1 6.1 56.1 37.8 Subsurface 7.8 14.7 1.5 7.19 56.2 5.4 57.1 37.5

EC (Electric conductivity), OM (organic matter), CEC (cation exchange capacity)

Exchangeable sodium percentage (ESP) = Exchangeable Na + (cmol _c kg ^-1 ) / CEC (cmol _c kg ^-1 ) × 100

Claims (5)

30 to 36 parts by weight of washed coal bottom ash, 45 to 55 parts by weight of perlite, 15 to 19 parts by weight of pulverized cocopeat, gypsum ), 1 to 3 parts by weight of a liquid amino acid and 0.05 to 0.15 parts by weight of oxalic acid as an active ingredient. delete delete (a) 30 to 36 parts by weight of washed coal bottom ash and 45 to 55 parts by weight of perlite are mixed with 1 to 3 parts by weight of gypsum gypsum and 15 parts by weight of pulverized cocopeat 15 To 19 parts by weight of a mixture is sintered at 600 to 700 ° C for 10 to 30 minutes;
(b) stirring the gelatin powder at 55 to 65 ° C for 1 to 3 hours at 25 to 35 rpm to prepare an amino acid liquid;
(c) 1 to 3 parts by weight of the prepared liquid amino acid in step (b) and 0.05 to 0.15 part by weight of oxalic acid to prepare a mixture; And
(d) spraying the mixture of step (c) onto the sintered mixture of step (a) and drying the mixture at 180 to 220 ° C. A method for improving a salt-accumulating soil, comprising treating the soil-improving soil for soil improvement of claim 1 with a salt-accumulating soil.

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