KR101826261B1 - Preparation method for water-soluble powder for non-precipitating one-pack type liquid nutrient composition of alternative forms of comercial multi-pack type liquid nutrient solution or fertilizer - Google Patents

Abstract

The water-soluble powder for a non-sedimented one-pack type nutrient solution prepared by the method of the present invention can easily produce a one-packed nutrient solution composition that does not need to be dissolved in each of the solutions A and B in one-pack type, Since the liquid nutrient solution fertilizer composition hardly precipitates, the clogging of the feed pipe can be remarkably reduced, the waste of minerals can be reduced, the minerals can be supplied to the crops in an amount as desired, and there is no expensive exclusive nutrient supply device , Can enhance the absorption capacity of crops while lowering concerns about the accumulation of mineral salts in the soil and environmental pollution. Also, the water-soluble powder for the non-sedimented one-pack type nutrient solution composition can be fertilized into the crop for mineral supply with the water-soluble powder itself without preparing the non-sedimented one-pack type nutrient solution composition.

Description

[Description of the Related Art] A method for preparing a water-soluble powder for a non-sedimented one-pack type nutrient solution of fertilizer, which is a multi-pack type liquid nutrient substitute for commercial use, or fertilizer}

The present invention relates to a method for producing a water-soluble powder for nutrient solution fertilizer used for growing crops, a water-soluble powder for nutrient solution fertilizer prepared from the water-soluble powder, and a cultivation method using the same.

Crops can be grown when the optimum range of minerals for optimum growth is different depending on the kind and variety of crops, and when the necessary minerals are properly supplied. When the minerals absorbed from the roots are lacking or overproduced, And [Bennett, 1993; Nelson, 2003].

Since the cultivation of nutrients has been put to practical use, many efforts have been made to develop a reasonable nutrient management method for each crop in each stage of growth. The representative types of nutrients currently used are: Korean native nutrient solution based on Japanese native nutrient solution, Yamazaki nutrient solution [Yamasaki, 1984] based on the raw nutrient solution, the absorption rate of nutrients absorbed by plants and water [Yamasaki, 1984], nutrient solution for each crop based on the nutrient solution of the Netherlands Greenhouse Crops Institute [Sonneveld and Straver Are being developed variously.

Domestic and Foreign Facilities Since the nutrient solution used in the horticulture industry in Korea has a serious problem of sedimentation when it is dissolved in water, it usually dissolves the exclusive nutrient solution composition separated into Solution A and Solution B, It is common to mix the devices and feed them to crops. In order to solve this problem, the commercialization of high quality and high productivity of high quality and high productivity [Gyonggi ARES, 2002], commercial cultivation [NIHA, 2003] and nutrient supply system [NHRI, 2006] Research is underway.

Tables 1 and 2 show the composition of typical representative nutrient solutions used in domestic and overseas facility horticulture sites by crops.

On the other hand, vitamin C, the most representative of antioxidants, is the most abundant water-soluble oxide in plant cells. Vitamin C plays a role in Xanthophyll circuits due to high synthesis rate and accumulation in chloroplasts, especially in plants. During vitagenic phytosynthesis and photoprotection, Vit The C-protected functions are interrelated. The concentration of vitamin C in chloroplasts is 50 mM (Smirnoff, 1996) and is an important component of an oxidative defense system that evolved to remove active oxygen (ROS) in plants.

Bennet, W.F. 1993 Nutrient deficiencies and toxicities in crop plant. AS Press, St. Paul, Minn, USA. Nelson, P.V.2003. Greenhouse operation and management. 6thed.PrenticeHall, NJ. Yamazaki Aya. 1984. All the cultivation of nutrient solution. Hiroshima company, Tokyo. pp. 34-40, 49-55. Sonneveld, C. and N. Straver. 1992. Voedingsoplossingen voor groenten en bloemen geteeld in water of substraten (Nutrient solution for vegetables and flowers grown in water or substrates). Voedingsoplossingen glastuinbouw. No. 8. P. 15. Gyonggi ARES (Gyonggi-Do Agricultural Research and Extension Services). 2002. Annual research report of Gyonggi-Do Agricultural Research report og Agricultural Research & Extension Services. GARES, Suwon, Korea. P.197-222. NIHA (National Institute of Highland horticulture). Annual research report of the national institute of highland agriculture. NIHA, Pyongchang, Korea. P.390-397. NHRI (National Horicultural Research Institute) .2006. Annual research report on national horticultural research institute. NHRI, Suwon, Korea. Pp. 138-159. Smirnoff, N.1996. The function and metabolism of ascorbic acid in plants. Ann. Bot. (78) 661-669.

It is an object of the present invention to provide a method for producing a nutrient solution which is free from the inconvenience of dissolving and dissolving in each of solutions A and B such as the conventional multi-liquid nutrient solution, and also, when a certain period of time elapses after mixing, It is not necessary to use an expensive dedicated nutrient supply device in which each of the multi-component nutrient solutions is dissolved and then mixed and supplied, and it is possible to improve the ability to absorb the nutrients in the crop, And to provide a method for producing a water-soluble powder for a non-sedimented one-pack type nutrient solution.

Another object of the present invention is to provide a water-soluble powder for a non-sedimented one-pack type nutrient solution prepared by the above method.

The present invention relates to a first bulk element containing at least two members selected from the group consisting of nitrogen, phosphoric acid and potassium; A second bulk element containing at least one selected from the group consisting of calcium and magnesium; 1. A method for producing a water-soluble powder for a nutrient solution for one-pack type mineral nutrient solution, comprising a trace element containing at least one selected from the group consisting of iron, manganese, zinc, boron, copper and molybdenum,

Wherein the source of nitrogen is at least one selected from the group consisting of potassium nitrate, ammonium phosphate monobasic, magnesium nitrate and ammonium nitrate,

The source of the phosphoric acid is at least one selected from the group consisting of potassium phosphate monobasic and ammonium phosphate,

The source of potassium is at least one selected from the group consisting of potassium phosphate, potassium nitrate, potassium sulfate, and potassium chloride,

Wherein the source of calcium is at least one selected from the group consisting of calcium nitrate and calcium chloride,

The source of magnesium may be at least one selected from the group consisting of magnesium sulfate and magnesium nitrate,

The source of iron is EDTA-iron,

The source of manganese is manganese sulfate,

The source of zinc is zinc sulfate,

The source of the boron is at least one selected from the group consisting of borax and boric acid,

The source of copper is copper sulfate,

The source of molybdenum is molybdenum soda,

Mixing a mixture of the first mass element, the second mass element and a trace element source with vitamin C at a humidity of 10% or more; And a second step of drying the mixture. The present invention also relates to a method for producing a water-soluble powder for a non-sedimented one-pack type nutrient solution.

The vitamin C is ascorbic acid or sodium ascorbate which is excellent in water solubility, and is preferably ascorbic acid.

The 'non-precipitated' used in the present invention is such that substantially no precipitate is formed such that the water-soluble powder is mixed with water to produce an aqueous solution, as well as several days or weeks have elapsed. The fact that substantially no precipitate is formed means that when the water-soluble powder is mixed with water to prepare an aqueous solution and measured after 24 hours, the amount of the first mass element, the second mass element and the trace element added to the water- The weight of the precipitate produced from the combined gross weight is 2% or less, preferably 1% or less, more preferably 0.5% or less, and most preferably 0.2% or less.

The first step is carried out for 20 minutes to one week, preferably for 40 minutes to 24 hours, more preferably for 1 hour to 6 hours. The lower limit of the mixing time in the first step is set to a sufficient time for the first mass element, the second mass element and the trace element to react with the vitamin C powder. Since the upper limit of the mixing time in the first step is not that the reaction proceeds or the quality is changed once the reaction of the first mass element, the second mass element and the trace element with vitamin C is completed, Is meant to provide a realistic time range that can be used in the commercial production of water-soluble powders for non-sedimented one-part nutrient solutions.

The first step can be carried out by stirring. The stirring speed is not particularly limited as long as it is capable of dissolving during the dissolution and the reaction time, but it may be usually 10 to 300 rpm, preferably 20 to 100 rpm.

The first step may be carried out at room temperature without heating or cooling separately. However, the above-mentioned first-step reaction is carried out at a relative humidity of 10% or more, preferably 15 to 70%, more preferably 20 to 50%. When the humidity is lower than the lower limit, even when the mixture of the sources of the first mass element, the second mass element and the trace element is mixed with the vitamin C, the reaction hardly occurs sufficiently quickly. If the humidity exceeds the upper limit value, drying and drying of the water-soluble powder may increase the cost and time. In order to reduce the drying cost and time, it is desirable to perform the one-step reaction by lowering the relative humidity as much as possible.

In step 1, a deliquescent powder or crystal contained in the sources of the first mass element, the second mass element and the trace element causes the vitamin C to react with a minimum amount of moisture in the air. The powder or crystal having the deliquescent property includes, for example, calcium nitrate, potassium nitrate, ammonium nitrate, zinc sulfate or calcium chloride.

When the deliquescent powders or crystals are first dissolved by moisture in the air, powders or crystals which are not deliquescent or weakly soluble in water, such as, for example, potassium nitrate, potassium phosphate monobasic, ammonium phosphate, magnesium sulfate, Magnesium, potassium sulfate, EDTA-iron, borax, boric acid, manganese sulfate, copper sulfate, molybdenum soda, and potassium chloride may be partially dissolved.

The mixture of the first mass element, the second mass element, and the source of the trace element may be mixed with each other before the step 1 to form granules, and then the mixture may be prepared. The mixture is prepared by mixing powders or crystals having resolubility other than magnesium sulfate having a large crystal grain size and powders or crystals having solubility in water to form granules having a size of 1 to 10 mm, preferably 2 to 5 mm, A mixed mixture is prepared.

Vacuum drying, hot air drying or freeze drying can be used for the second step, and vacuum drying can be carried out at room temperature, preferably without any additional heating or cooling.

The present invention also provides a water-soluble powder for a non-sedimented one-pack type nutrient solution prepared by the above method,

The present invention relates to a water-soluble powder for a non-sedimented one-pack type nutrient solution characterized by containing 10 to 100 parts by weight of the vitamin C with respect to 100 parts by weight of a mixture of the first mass element, the second mass element and the source of the trace element.

The vitamin C may be 10 to 100 parts by weight, preferably 20 to 50 parts by weight, based on 100 parts by weight of the mixture of the first mass element, the second mass element and the source of the trace element. When the water-soluble powder of the present invention is dissolved in water, a precipitate may be formed. If the water-soluble powder exceeds the upper limit, the content of vitamin C in the water-soluble powder of the present invention is increased but the pH is increased to an appropriate level Can be lowered.

In the water-soluble powder for the non-sedimented one-pack type nutrient solution of the present invention, the composition of the mixture of the first massive element, the second massive element and the trace elemental source varies depending on the specification of the fertilizer, the step of growing the crop, can do.

The water-soluble powder for a non-sedimented one-pack type nutrient solution according to the present invention contains at least two kinds of bulk elements, and the total amount of nitrogen combined with ammonia nitrogen and nitrate nitrogen, the total amount of water soluble phosphoric acid and water- It may be a compound fertilizer [Notification No. 2015-21 of the Rural Development Administration] 'Establishment and designation of fertilizer process standards'.

The water-soluble powder for non-sedimented one-pack type nutrient solution according to the present invention contains at least 0.1% by weight of water-soluble manganese, at least 0.05% by weight of water-soluble boron, at least 0.1% by weight of water- 0.05% by weight or more of water-soluble zinc and 0.05% by weight or more of water-soluble copper.

The water-soluble powder for the non-sedimented one-pack type nutrient solution of the present invention may be, for example, a nutrient solution fertilizer for supergene for use in crops in the early stage of growth. The supernatant nutrient solution composition may have a ratio of nitrogen, phosphoric acid, and potassium of 10-40: 1.5-6: 2-8. Also, it is preferable that at least two kinds of ammonium nitrate 25 to 75 wt%, potassium monophosphate 7 to 20 wt% and magnesium nitrate 7 to 20 wt% are used as a large element supply source, 0.08 to 0.35 wt% of EDTA- Wherein at least one of boric acid 0.02 to 0.1 wt.%, Copper sulfate 0.002 to 0.01 wt.%, Zinc sulfate 0.4 to 2 wt.%, Manganese sulfate 0.02 to 0.1 wt.% And molybdenum soda 0.002 to 0.01 wt.% And ascorbic acid 10 To 40% by weight and a purified water balance. And may further contain 0.4 to 2% by weight of calcium chloride as a calcium source.

The water-soluble powder for the non-sedimented one-pack type nutrient solution of the present invention may be, for example, a nutritive nutrient solution composition for use in a crop of the reproductive or deletion stage. The nutrient solution composition for deletion may have a ratio of nitrogen, phosphoric acid and potassium of 3.5-15: 1.5-6: 12-50. Also, it is preferable that at least two kinds of potassium nitrate, potassium monophosphate, 6 to 20 wt% and 6 to 20 wt% of potassium nitrate are used as a source of a large element, 0.08 to 0.35 wt% of EDTA- Wherein the aqueous solution contains at least one of boric acid 0.02-0.1 wt%, copper sulfate 0.002-0.01 wt%, zinc sulfate 0.003-0.03 wt%, manganese sulfate 0.02-0.1 wt% and molybdenum soda 0.002-0.01 wt%, ascorbic acid 10 To 40% by weight and a purified water balance. And may further contain 0.4 to 2% by weight of calcium chloride as a calcium source.

The present invention also provides a cultivation method of a crop for fertilizing a water-soluble powder for the non-sedimented one-pack type nutrient solution.

The water-soluble powder for non-sedimented one-pack type nutrient solution can be fertilized as it is. However, it can be diluted with water to give fertilization of leaves, fertilization of habitats, simultaneous application of leaves and plants and dilution of 100 to 10000 times, preferably 500 to 5000 times And can be used 1 to 15 times / January, and the standard application amount per crop seedling is 5 to 500 mL once.

The water-soluble powder for a non-sedimented one-pack type nutrient solution prepared by the method of the present invention can easily produce a one-packed nutrient solution composition that does not need to be dissolved in each of the solutions A and B in one-pack type, Since the liquid nutrient solution fertilizer composition hardly precipitates, the clogging of the feed pipe can be remarkably reduced, the waste of minerals can be reduced, the minerals can be supplied to the crops in an amount as desired, and there is no expensive exclusive nutrient supply device , Can enhance the absorption capacity of crops while lowering concerns about the accumulation of mineral salts in the soil and environmental pollution. Also, the water-soluble powder for the non-sedimented one-pack type nutrient solution composition can be fertilized into the crop for mineral supply with the water-soluble powder itself without preparing the non-sedimented one-pack type nutrient solution composition.

1 is a photograph of the powder for supernatant nutrient solution prepared in Comparative Example 1-1.
FIG. 2 is a photograph of the powder of Comparative Example 1-1 after 24 hours of dilution with water 500 times.
Fig. 3 is a photograph of a water-soluble powder for a nutrient solution for supergene prepared in Example 1-1. Fig.
4 is a photograph of water-soluble powder of Example 1-1 after 24 hours of dilution with water 500 times.
5 is a photograph of the powder for nutrient solution for feces prepared in Comparative Example 2. Fig.
6 is a photograph of a water-soluble powder for nutrient solution for insemination prepared in Example 2. Fig.
7 is a photograph of the water-soluble powder of Example 2 diluted 500 times in water after 24 hours.
8 is a photograph of the calcium-supplying supernatant powder prepared in Comparative Example 3 after dilution 500 times in water for 24 hours.
FIG. 9 is a photograph of the water-soluble powder for a nutrient solution for calcium supplements prepared in Example 3 diluted 500 times with water after 24 hours.

Hereinafter, the present invention will be described in more detail with reference to preferred embodiments. However, these examples are intended to illustrate the present invention more specifically, but the scope of the present invention is not limited thereto.

Comparative Example 1-1: Preparation of powders for nutrient solution for supergene

1) Manufacturing process

Mix 1 kg of trace elements and trace elements in the nutrient solution fertilizer composition table of Table 3 to prepare powder for nutrient solution for super nutrient solution. The bulk elements and trace elements in Table 3 are all water-soluble powders.

Raw material name Mixed amount (g) Formulation ratio (%) Ammonium nitrate NH ₄ NO ₃ 633 63.3 1st phosphate KH ₂ PO ₄ 176 17.6 Magnesium nitrate Mg (NO _{3) 2} 6H ₂ O o 176 17.6 EDTA-iron Fe-EDTA 2.11 0.211 Boric acid H ₃ BO ₃ 0.70 0.07 Copper sulfate CuSO ₄ .5H ₂ O 0.05 0.005 Zinc sulfate ZnSO ₄ .7H ₂ O 11.3 1.13 Manganese sulfate MnSO ₄ .H ₂ O 0.49 0.049 Molybdenum soda Na ₂ MoO ₄ .2H ₂ O 0.06 0.006 Sum - 1,000 100

2) Characteristics and Characteristics

In Comparative Example 1-1, the NPK was 18.9-3.14-4.0.

Comparative Example 1-1 was a white powder (see FIG. 1), and a precipitate was formed immediately after dissolving 500 times in water and dissolving it (see FIG. 2). The amount of the precipitate measured after 24 hours of diluting the nutrient solution for fertilizer of Comparative Example 1-1 was 12.8%. The amount of the precipitate was calculated by dividing the dry weight of the precipitate by the total weight of the mass elements and the trace elements added.

Example 1-1: Preparation of water-soluble powder for non-sedimented one-pack type nutrient solution for supercritical water

1) Manufacturing process

A) Step 1: Heat the reactor at 50 占 폚 for 30 minutes to remove moisture in the reactor.

B) Step 2: When Step 1 is completed, the temperature of the reactor is adjusted to room temperature (20 ° C).

(C) Step 3: 1 kg of a mixture of a large amount of element and trace element (except for ascorbic acid) (the powder of Comparative Example 1-1) was simultaneously added to the reactor of Step 1 in the nutrient solution fertilizer composition table of Table 4 and stirred at 30 rpm, [ENDTECH, MODEL: LUH-712H, Korea] to adjust the relative humidity in the reactor to 25%.

Raw material name Mixed amount (g) Formulation ratio (%) Ammonium nitrate NH ₄ NO ₃ 633 49.7 1st phosphate KH ₂ PO ₄ 176 13.8 Magnesium nitrate Mg (NO ₃ ) ₂ .6H ₂ O 176 13.8 EDTA-iron Fe-EDTA 2.11 0.17 Boric acid H ₃ BO ₃ 0.70 0.05 Copper sulfate CuSO ₄ .5H ₂ O 0.05 0.004 Zinc sulfate ZnSO ₄ .7H ₂ O 11.3 0.88 Manganese sulfate MnSO ₄ .H ₂ O 0.49 0.04 Molybdenum soda Na ₂ MoO ₄ .2H ₂ O 0.06 0.005 Ascorbic Acid C ₆ H ₈ O ₆ 275 21.57 Sum - 1,275 100

D) Step 4: 276 g of ascorbic acid is added to the reactor and stirred at 30 rpm for 1 hour.

E) Step 5: When step 4 is completed, vacuum drying is performed at 20 ° C to prepare a water-soluble powder for nutrient solution fertilizer.

2) Characteristics and Characteristics

In Example 1-1, the NPK was 18.9-3.14-4.0.

The nutrient solution composition of Example 1-1 was light brown powder (see Fig. 3), and no sediment was observed when diluted 500 times with water (see Fig. 4). The amount of the precipitate measured after 24 hours of diluting the water-soluble powder for the nutrient solution fertilizer of Example 1-1 was less than 0.01%.

Examples 1-2 and 1-3: Preparation of water-soluble powder for nutrient solution fertilizer

(138 g) and 3 times (828 g) were added to the amounts of ascorbic acid in Step 4 in Example 1-1, respectively, in the same manner as in Examples 1-2 and 1-3 To prepare a water-soluble powder.

The water-soluble powders for the nutrient solution fertilizer of Examples 1-2 and 1-3 had the same NPK as the water-soluble powder for the nutrient solution fertilizer of Example 1-1. When the content of ascorbic acid was increased, the water- When diluted, the degree of brownness was increased, but no sediment was observed. The amount of the precipitate measured after 24 hours of production of the water-soluble powder for nutrient solution fertilizer of Examples 1-2 and 1-3 was less than 0.01%.

Examples 1-4 to 1-6 and Comparative Example 1-2: Preparation of powders for nutrient solution for supercritical fluids

Comparative Example 1-2 and Examples 1-4, 1-5, and 1- (1) were prepared in the same manner as in Example 1-1 except that the humidity of Step 3 was adjusted to 5%, 15%, 45%, and 65% 6 powder for nutrient solution fertilizer is prepared.

In Comparative Example 1-2, even if the agitation time of Step 4 was increased, the degree of brownness of the powder was not similar to that of Example 1-1, and the powder of Comparative Example 1-2 was diluted 500 times with water, Was 8.8%. This is the result of a 500-fold dilution, and the higher the amount of fertilizer added, the higher the amount of precipitate produced.

In Examples 1-4 to 1-6, the amount of the precipitate measured after 24 hours after the powder was diluted 500 times with water was less than 0.01%. However, as the relative humidity increased, the vacuum drying time of Process 5 for pulverization increased.

Comparative Example 2: Preparation of powder for nutrient solution for deletion

1) Manufacturing process

The bulk elements and trace elements of 1 kg of the nutrient solution fertilizer composition table in Table 5 are mixed to prepare powders for nutrient solution fertilizer for superpowers. The bulk elements and trace elements in Table 5 are all water-soluble powders.

Raw material name Mixed amount (g) Formulation ratio (%) Potassium nitrate KNO ₃ 664 66.4 1st phosphate KH ₂ PO ₄ 166 16.6 Magnesium sulfate MgSO ₄ .7H ₂ O 166 16.6 EDTA-iron Fe-EDTA 1.99 0.199 Boric acid H ₃ BO ₃ 0.66 0.066 Copper sulfate CuSO ₄ .5H ₂ O 0.05 0.005 Zinc sulfate ZnSO ₄ .7H ₂ O 0.40 0.04 Manganese sulfate MnSO ₄ .H ₂ O 0.47 0.047 Molybdenum soda Na ₂ MoO ₄ .2H ₂ O 0.07 0.007 Sum - 1,000 100

2) Characteristics and Characteristics

In Comparative Example 2, the NPK was 7.21-2.96-23.9.

Comparative Example 2 is a white powder (see Fig. 5), and a precipitate is formed immediately after dissolving 500 times in water and dissolving it. The amount of the precipitate measured after 24 hours of diluting the nutrient solution fertilizer powder of Comparative Example 2 was 11%.

Example 2: Preparation of water-soluble powder for non-precipitation single-liquid nutrient fertilizer for deletion

1) Manufacturing process

A) Step 1: Heat the reactor at 50 占 폚 for 30 minutes to remove moisture in the reactor.

B) Step 2: When Step 1 is completed, the temperature of the reactor is adjusted to room temperature (20 ° C).

C) Step 3: 1 kg of a mixture of a large amount of element and trace element (powder of Comparative Example 2) except for ascorbic acid was simultaneously added to the reactor of Step 1 in the composition of the nutrient solution fertilizer of Table 6, and the mixture was stirred at 30 rpm, ENDTECH, MODEL: LUH-712H, Korea) to adjust the relative humidity in the reactor to 25%.

Raw material name Mixed amount (g) Formulation ratio (%) Potassium nitrate KNO ₃ 664 52.08 1st phosphate KH ₂ PO ₄ 166 13.02 Magnesium sulfate MgSO ₄ .7H ₂ O 166 13.02 EDTA-iron Fe-EDTA 1.99 0.156 Boric acid H ₃ BO ₃ 0.66 0.052 Copper sulfate CuSO ₄ .5H ₂ O 0.05 0.004 Zinc sulfate ZnSO ₄ .7H ₂ O 0.40 0.031 Manganese sulfate MnSO ₄ .H ₂ O 0.47 0.037 Molybdenum soda Na ₂ MoO ₄ .2H ₂ O 0.07 0.005 Ascorbic Acid C ₆ H ₈ O ₆ 275 21.57 Sum - 1,275 100

D) Step 4: 276 g of ascorbic acid is added to the reactor and stirred at 30 rpm for 1 hour.

E) Step 5: When step 4 is completed, vacuum drying is performed at 20 ° C to prepare a water-soluble powder for nutrient solution fertilizer.

2) Characteristics and Characteristics

In Example 2, the NPK was 7.21-2.96-23.9.

The nutrient solution composition of Example 2 was a light brown powder (see FIG. 6), and no sediment was observed when diluted 500 times with water (see FIG. 7). The amount of the precipitate measured after 24 hours of diluting the water-soluble powder for the nutrient solution fertilizer of Example 2 was less than 0.01%.

Comparative Example 3: Preparation of powder for nutrient solution fertilizer for calcium-supplying super-cleaner

1) Manufacturing process

The bulk of the nutrient solution fertilizer composition table in Table 7 and 1 kg of trace elements are mixed to prepare a powder for nutrient solution fertilizer for superpowers. The bulk elements and trace elements in Table 7 are all water-soluble powders.

Raw material name Mixed amount (g) Formulation ratio (%) Potassium nitrate KNO ₃ 664 65.67 1st phosphate KH ₂ PO ₄ 166 16.42 Magnesium sulfate MgSO ₄ .7H ₂ O 166 16.42 EDTA-iron Fe-EDTA 1.99 0.197 Boric acid H ₃ BO ₃ 0.66 0.065 Copper sulfate CuSO ₄ .5H ₂ O 0.05 0.005 Zinc sulfate ZnSO ₄ .7H ₂ O 11.3 1.12 Manganese sulfate MnSO ₄ .H ₂ O 0.47 0.046 Molybdenum soda Na ₂ MoO ₄ .2H ₂ O 0.07 0.007 Calcium chloride CaCl ₂ .2H ₂ O 11.12 1.10 Sum - 1,011.12 100

2) Characteristics and Characteristics

In Comparative Example 3, NPK is 4.816-0.801-1.011.

Comparative Example 3 was a white powder, which was diluted 500-fold with water, and a precipitate was produced in a lower portion immediately after dissolution (see FIG. 8). The amount of the precipitate measured after 24 hours of diluting the nutrient solution for fertilizer of Comparative Example 2 was 13.2%.

Example 3: Preparation of water-soluble powder for non-sedimented one-pack type nutrient solution for calcium-supplying super-sediment

1) Manufacturing process

A) Step 1: Heat the reactor at 50 占 폚 for 30 minutes to remove moisture in the reactor.

B) Step 2: When Step 1 is completed, the temperature of the reactor is adjusted to room temperature (20 ° C).

C) Step 3: In the reactor of Step 1, 1.011 kg of a mixture of a bulk element and a trace element (powder of Comparative Example 1-1) except for ascorbic acid in the composition of the nutrient solution fertilizer of Table 8 were simultaneously introduced and stirred at 30 rpm, [ENDTECH, MODEL: LUH-712H, Korea] to adjust the relative humidity in the reactor to 25%.

Raw material name Mixed amount (g) Formulation ratio (%) Ammonium nitrate NH ₄ NO ₃ 633 49.251 1st phosphate KH ₂ PO ₄ 176 13.681 Magnesium nitrate Mg (NO ₃ ) ₂ .6H ₂ O 176 13.681 EDTA-iron Fe-EDTA 2.11 0.164 Boric acid H ₃ BO ₃ 0.70 0.054 Copper sulfate CuSO ₄ .5H ₂ O 0.05 0.004 Zinc sulfate ZnSO ₄ .7H ₂ O 11.3 0.876 Manganese sulfate MnSO ₄ .H ₂ O 0.49 0.038 Molybdenum soda Na ₂ MoO ₄ .2H ₂ O 0.06 0.005 Calcium chloride CaCl ₂ .2H ₂ O 11.12 0.865 Ascorbic Acid C ₆ H ₈ O ₆ 275 21.382 Sum - 1,286 100

D) Step 4: 275 g of ascorbic acid is added to the reactor and stirred at 30 rpm for 1 hour.

E) Step 5: When step 4 is completed, vacuum drying is performed at 20 ° C to prepare a water-soluble powder for nutrient solution fertilizer.

2) Characteristics and Characteristics

In Example 3, the NPK is 4.816-0.801-1.011.

Example 3 was white powder, light brown powder, and no sediment was observed when diluted 500-fold with water (see FIG. 9). The amount of the precipitate measured after 24 hours of diluting the water-soluble powder for the nutrient solution fertilizer of Example 3 was less than 0.01%.

Experimental Example 1: Determination of the characteristics of fertilizer through cultivation of hot lettuce (red skirt)

The nutrient solution for fertilizer of Example 2 and Comparative Example 2 having the same mass elements and trace element composition was diluted to 1,000 times (high concentration), 2000 times (medium concentration) and 4000 times (low concentration) 50 mL each time. Groups that did not have the nutrient solution fertilizer composition were tested as a control group. The management of water and the control of the test material other than the nutrient solution fertilizer composition treatment were carried out in accordance with the environmentally friendly cultivation standard.

As a result of the analysis of the soil conditions at the test site, That is, the pH was 7, the organic content was 30 g / kg, P was 536 mg / kg, K was 699 mg / kg, Ca was 4,821 mg / kg and Mg content was 1,434 mg / kg and the EC value was 8.4 dS / (P < 0.01). Because of the nature of environment friendly farmers, the amount of phosphoric acid was high because of the high usage of organic fertilizer, and three kinds of minerals were also high.

During the test period, the temperature was measured at 2: 10cm depth, and the temperature was 18 ℃ at the time of the preparation. The temperature of the second harvesting stage to the 7th stage was maintained at 20 ~ 21 ℃, After 9th, it reached 31 ℃.

1) Confirmation of the occurrence of weakness

In comparison with the control group, it was confirmed whether or not the weak solution occurred in the diluted nutrient solution of Example 2 and Comparative Example 2. The occurrence of the weakness was confirmed by the occurrence of the tip-burn phenomenon of the leaf of the informative crop and the occurrence of the occurrence of the symptom or death of the disclosed crop.

Compared with the control group, the nutrient solution of Example 2 and Comparative Example 2 showed no symptoms due to the weakness at all treatment concentrations.

2) Investigation of increase in lettuce yield (production)

Lettuce was harvested for a total of 10 weeks starting from the first harvest stage. Table 9 shows the average yields per lettuce of the lettuce at the time when the lettuce was harvested during harvesting.

The optimum rhizosphere temperature of lettuce is 15 ~ 22 ℃, the high temperature limit temperature is 25 ℃, and the low temperature limit temperature is 13 ℃ [Yong Bum et al. Hydroponics technology of export fruit and vegetables. pp 87. 2010.], and within the optimum rhizosphere temperature range until the 7th week after the planting, but beyond the high temperature limit temperature after 8 weeks. Therefore, the yield of lettuce was divided into yields of 1-7 weeks and yields of 8-9 weeks.

Within the optimum rhizosphere temperature range, the ratio of the control group (101 g) to the control group (123) was 123 to 134%, and there was no significant difference in the treatment concentration on the yield (p <0.05).

In the case of Example 2, the amount was 109 to 125% of that of the control group, and the production amount was lower in the high concentration group (1000-fold dilution). It was judged that in Example 2, minerals exceeding the in vivo requirement of the crop were absorbed in vivo, resulting in a decrease in yield.

In the case of the temperature outside the high temperature limit temperature, in Comparative Example 2, there was no or little effect of increasing the production amount, but in Example 2, the production was increased from 122 to 123% as compared with the control group, And it was found. Therefore, it has been confirmed that the water-soluble powder for nutrient solution of the present invention has the possibility of increasing the production amount while increasing the cultivation period of lettuce to the temperature condition outside the optimum rhizospheric temperature range.

Experimental Example 2: Determination of fertilizer characteristics by cultivating low temperature of lettuce (red skirt)

The water-soluble powders for nutrient solution fertilizer of Examples 1-1 and 1-1 having the same mass elements and trace element composition ratios were diluted to 500 times (high concentration), 1000 times (medium concentration) and 2000 times (low concentration) Once per week, 50 mL per plant was fertilized. As a control group, water soluble powder for nutrient solution fertilizer was not treated. Water management and test material management other than water-soluble powder treatment for nutrient solution fertilizer were carried out in accordance with environmentally friendly cultivation standards.

As a result of the analysis of the soil conditions at the test site, That is, the pH was 7, the organic content was 25 g / Kg, P was 438 mg / Kg, K was 0.37 cmol + / Kg, Ca was 6.5 cmol + / Kg and Mg content was 2.7 cmol + (P <0.01). The results of this study are as follows.

During the test period, the temperature was measured at 2: 10cm depth, and the temperature was 24.5 ℃ at the time of the preparation. From the 2nd harvest stage to the 7th stage, the range was maintained at 14.6-18.0 ℃, And reached 10.3 to 12.1 캜 at 15th week.

1) Confirmation of the occurrence of weakness

When compared with the control group, it was confirmed whether or not the dilution treatment of the nutrient solution fertilizer of Example 1-1 and Comparative Example 1-1 occurred weakness. The occurrence of the weakness was confirmed by the occurrence of the tip-burn phenomenon of the leaf of the informative crop and the occurrence of the occurrence of the symptom or death of the disclosed crop.

Compared with the control group, the 1000 and 2000 dilution cultures did not show any weakness. However, in the case of 500-fold dilution of Comparative Example 1-1, the weakening began to occur from the 2nd week, and at the 7th week, about 29% of the total crops were weakened.

However, in Example 1-1, no weakening occurred at all dilution concentrations. Therefore, in Example 1-1, all of the treatment groups were diluted 500 times, 1000 times, and 2000 times, and the treatment group in Comparative Example 1-3 was diluted 2000 times.

2) Investigation of increase in lettuce yield (production)

Lettuce was harvested for a total of 15 weeks starting from the first harvest stage in a week. At the time of reaching the lower temperature limit of lettuce during the harvesting period, the whole test was completed and the average yield per 1 week of lettuce was shown in Table 10.

It was within the optimum rhizosphere temperature range until 7 weeks after the planting, but exceeded the low temperature limit temperature after 8 weeks. Therefore, the yield of lettuce is divided into 1 to 7 weekly yields and 8 to 15 weekly yields.

In comparison with the control group (89.9 g), the content of Comparative Example 1-1 was 120.8%, but that of Example 1-1 was 151-174% of that of the control group. 130 percent higher. No particular trend was shown by the treatment concentration in Example 1-1.

In the case of the temperature outside the low temperature limit temperature, the effect of increasing the production amount in Comparative Example 1-1 was insignificant, but in Example 1-1, the production amount of 122 to 129% was increased. Therefore, it has been confirmed that the water-soluble powder for nutrient solution of the present invention has the possibility of increasing the production amount while increasing the cultivation period of lettuce to the temperature condition outside the optimum rhizospheric temperature range.

Claims (3)

A first bulk element containing at least two species selected from the group consisting of nitrogen, phosphoric acid and potassium; A second bulk element containing at least one selected from the group consisting of calcium and magnesium; 1. A method for producing a water-soluble powder for a nutrient solution for one-pack type mineral nutrient solution, comprising a trace element containing at least one selected from the group consisting of iron, manganese, zinc, boron, copper and molybdenum,
Wherein the source of nitrogen is at least one selected from the group consisting of potassium nitrate, ammonium phosphate monobasic, magnesium nitrate and ammonium nitrate,
The source of the phosphoric acid is at least one selected from the group consisting of potassium phosphate monobasic and ammonium phosphate,
The source of potassium is at least one selected from the group consisting of potassium phosphate, potassium nitrate, potassium sulfate, and potassium chloride,
Wherein the source of calcium is at least one selected from the group consisting of calcium nitrate and calcium chloride,
The source of magnesium may be at least one selected from the group consisting of magnesium sulfate and magnesium nitrate,
The source of iron is EDTA-iron,
The source of manganese is manganese sulfate,
The source of zinc is zinc sulfate,
The source of the boron is at least one selected from the group consisting of borax and boric acid,
The source of copper is copper sulfate,
The source of molybdenum is molybdenum soda,
Mixing a mixture of the first mass element, the second mass element and a trace element source with vitamin C at a humidity of 10% or more; And a second step of drying the mixture. The method for producing a water-soluble powder for non-sedimented one-pack type nutrient solution according to claim 1, The method of claim 1, wherein the first step is performed for 20 minutes to 1 week. delete

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