JPH0640791A - Paste-type fertilizer containing organic matter including dicyandiamide - Google Patents

Abstract

PURPOSE:To obtain a paste-type fertilizer having a slow effect of fertilizing in which solid-liquid separation of the fertilizer component is stabilized. CONSTITUTION:A specified amt. of dicyandiamide is incorporated into a paste- type fertilizer containing org. matter including protein decomposition material containing a fibrous form. Thereby, the fertilizer has an slow effect of fertilizing so that additional manure can be omitted. Runoff of the fertilizer is prevented, which suppresses environmental pollution.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paste fertilizer containing an organic substance containing dicyandiamide, which is intended to be a slow-release fertilizer.

[0002]

2. Description of the Related Art Conventionally, pasty fertilizers are mainly produced by using fertilizer substances and organic-containing liquids such as alcohol fermentation waste liquids. Paste-type fertilizer belongs to high-viscosity suspension type compound fertilizer, which is regarded as effective as basic fertilizer, easy to pump, and can be combined with transplanting equipment and seeding equipment to perform multiple operations at the same time. Therefore, the use of pasty fertilizer has enabled the most suitable fertilization method for the growth and variety of crops. Furthermore, even if soil fertilization is applied, there is no runoff and it is effective for environmental conservation, and it is used not only for paddy rice but also for upland cultivation.

[0003]

However, with the advancement of fertilizer applicators, the number of fertilizer application positions has changed from one to a plurality of locations, a technology more suited to the growth of crops has been developed, and fertilization including topdressing from the basic fertilizer center is required. However, past fertilizers are generally fast-acting even when considering the fertilizer application position, its amount, and its distribution. is there.

The present invention solves the above-mentioned problems of the prior art, imparts a slow-acting effect to paste fertilizer, and
It is intended to contain long-term fertilizer components and achieve long-term storage stability.

[0005]

[Means for Solving the Problems] In order to achieve the above object, the inventors of the present invention have conducted extensive studies, and as a result, dicyandiamide (HN (HN :) CNHCN) is effective,
The present invention has been completed. That is, the gist of the present invention is a paste-like fertilizer containing dicyandiamide in an organic paste-like fertilizer containing a fibrous protein-decomposed product. Furthermore, the present invention secures the slow-acting effect of the paste-like fertilizer by a synergistic effect with the fiber-form protein hydrolyzate, and further contains a high-level fertilizer component, which enables stable long-term storage.

[0006]

[Operation] The configuration and operation of the present invention will be described. In the present invention, the amount of dicyandiamide added to the paste fertilizer is targeted to be in the range of 5 to 80% of the nitrogen component, but is appropriately determined depending on the cultivation period of the crop.

Next, a method for producing the pasty fertilizer according to the present invention will be described. According to the method described in Japanese Patent Publication No. Sho 60-21954, the main component of production is molasses alcohol waste liquid concentrate as an organic liquid raw material, a protein raw material such as soybean powder is added to the base, and caustic potassium is further added to pH 12 to 13 at a temperature. It is kept at 40-50 ° C for 10 hours to form an organic liquid raw material, and then it is blended with urea, ammonium sulfate, ammonium phosphorus, salting and dicyandiamide (hereinafter referred to as Dd) as a powder raw material so as to secure a predetermined fertilizer component. Form a powdered raw material, and knead this powdered raw material with a liquid material that has been finely pulverized in advance, and then age it to obtain a product.
Alternatively, it may be mixed with a liquid raw material and finely pulverized by a wet pulverizer to form a paste. The paste fertilizer thus obtained has a pH of 4 to 6.5 and a viscosity (centipoise) of 1,000 to
It is adjusted to 3,000 (20 ℃).

In the above, when Dd is added, it may be ground as a powder raw material alone, or may be mixed with other raw materials and ground. Further, it is also possible to continuously mix powder and liquid raw materials and wet pulverize as in the means described in Japanese Patent Publication No. 29640/1990. The amount of Dd added is appropriately set depending on the degree of slow-release effect as described above.

[0009]

EXAMPLES Examples of the present invention will be described, but the present invention is not limited thereto.

[0010]

[Example 1] As a powder raw material, urea, phosphorus ammonium, Dd, and salt were used, and nitrogen N: 21%, phosphoric acid P ₂ O ₅ : 23%, Kari K ₂ O: 1
It was blended so as to be 4% (Dd-type nitrogen was 6%). As a liquid raw material, 11 parts by weight of defatted soybean powder and 8 parts by weight of caustic potassium were added to 81 parts by weight of molasses alcohol waste liquid concentrate, and the mixture was treated at 45 ° C. for 10 hours. 55 parts by weight of the powder raw material and 45 parts by weight of the liquid raw material were gradually added and mixed, and wet-pulverized to obtain a paste fertilizer. The paste-like fertilizer obtained was 12.3% nitrogen and 1 phosphoric acid.
The viscosity was 2.3% and 8%, and the viscosity was in the range of 1,000 to 3,000 CP. The pH was 6.0, the specific gravity was 1.42, and the Dd-type nitrogen was 3.0%.

[0011]

[Embodiment 2] As a powder raw material, urea, phosphorus ammonium, Dd, and salt were used, and nitrogen N: 22%, phosphoric acid P ₂ O ₅ : 23%, Kari K ₂ O: 1
It was blended so as to be 6% (Dd-type nitrogen is 10%). As a liquid raw material, add 13.5 parts by weight of defatted soybean powder and 9.5 parts by weight of caustic potassium to 77 parts by weight of molasses alcohol waste liquid concentrate and add at 45 ° C.
Treated for 10 hours. 62.5 parts by weight of the powder raw material and liquid raw material 3
Wet pulverization was performed while gradually adding and blending 7.5 parts by weight to obtain a paste fertilizer. The pasty fertilizer obtained is nitrogen 14.5.
%, Phosphoric acid 14.2%, potassium 14.2%, viscosity of 1,000 to 3,000
It was in the CP range. pH 6.0, specific gravity 1.42, Dd-state nitrogen 6.0
%Met.

[0012]

[Embodiment 3] Urea, phosphorus ammonium, Dd and salt were used as powder raw materials, nitrogen N: 23.5%, phosphoric acid P ₂ O ₅ : 17%, Kari K ₂ O: 1
It was blended so as to be 9% (Dd-type nitrogen was 10%). As a liquid raw material, 13 parts by weight of gelatin and 9 parts by weight of caustic potassium were added to 78 parts by weight of the molasses alcohol waste liquid concentrate, and the mixture was treated at 45 ° C. for 10 hours. 60.5 parts by weight of the powder raw material and 39.5 parts by weight of the liquid raw material were gradually added and mixed, and wet-ground to obtain a paste-like fertilizer. The paste-like fertilizer obtained was 15.3% nitrogen and 1 phosphoric acid.
The viscosity was 0.5% and Kari 15.2%, and the viscosity was in the range of 1,000 to 3,000 CP. The pH was 6.1, the specific gravity was 1.40, and the Dd-type nitrogen was 6.0%.

The pasty fertilizers obtained in Examples 1 to 3 were placed in a glass measuring cylinder (1 L) and allowed to stand,
The degree of separation of the solid-liquid was measured, and the height of the separated liquid was shown in%. The measurement results are shown in Table 1. Table 1 1 month later 2 months later 4 months later Example 1 product 1.2 1.5 1.8% Example 2 product 1.0 1.3 3.5 %% Example 3 product 1.5 1 .8 2.0% Cultivation test example A cultivation test of the pasty fertilizer of the present invention was conducted as follows.

Each of the following fertilizers was placed in a 1 / 5,000 pot in a depth of 5 cm and 15 cm in a depth of 0.45 with nitrogen components respectively.
The fertilizer was fertilized row by row, and two rice seedlings were transplanted to each 2 cm of the fertilized soil 2 cm. After transplanting, it was flooded and cultivated. 1st ward: Paste fertilizer (12-12-12) Upper 3g, Lower 3
g. 2nd ward: Paste fertilizer (12-12-12) 3.75g on the upper stage, 3.
75 g.

District 3: Paste fertilizer containing 3% Dd (12-12
-12) Upper 3.75g, Lower 3.75g. 4th ward: Paste fertilizer containing 6% Dd (14-14-14) Upper 3.2
1g, lower 3.21g. Cultivated under the above-mentioned cultivation conditions and the results of the growth survey are shown in Table 2.
It was shown to. Table 2 Transplant 30 days 60 days 90 days 120 days (harvest) Plant height Number of stems Number of plant height Number of stems Number of plant height Number of ears Number of ears 1 Number of ears 1000 grains Harvest g / pot 1 ward 35.6 14.5 65.1 36.0 78.0 21.0 21.0 88 20.8 62.6 2 ward 35.8 15.5 65.8 35.5 80.0 22.5 21.0 89 20.7 64.8 3rd ward 35.4 15.5 64.5 30.5 78.5 24.5 22.5 94 21.0 71.1 4th ward 35.0 14.0 64.2 28.5 78.5 25.5 23.0 93 21.1 72.6 Mineralization test The test method is to remove 1 kg of soil in a beaker Fertilize in soil, leave it in a flooded state, and then change it with inorganic nitrogen (Nmg /
100 g) was measured. The amount of fertilizer applied was the same as in the cultivation test example.
The measurement results are shown in Table 3.

Table 3 15th day 30th day 45th day 60th day 75th day 90th day 15 ℃ 25 ℃ 15 ℃ 25 ℃ 15 ℃ 25 ℃ 15 ℃ 25 ℃ 15 ℃ 25 ℃ 15 ℃ 25 ℃ 1 ward 28.6 28.5 28.3 28.6 28.5 28.6 27.5 28.0 27.5 27.9 27.4 28.6 2 Ward 25.8 27.0 27.0 27.1 27.0 27.1 26.5 26.4 26.0 25.8 25.6 25.4 3 Ward 20.4 23.5 21.5 25.5 25.5 26.5 26.0 27.0 27.0 27.0 26.5 26.5 4 Ward 20.5 22.0 20.6 23.5 22.0 24.2 24.0 26.0 26.1 27.0 26.7 27.5 As the above results show, it is understood that the addition amount of Dd affects the promotion of mineralization. In the cultivation test, the delay of mineralization caused fertilization effect in the latter half of the growth, and it was revealed that the yield was increased by omitting additional fertilization and improving the yield components. Thus, the amount of Dd added is determined in consideration of the cultivation period of the crop.

[0017]

EFFECTS OF THE INVENTION Since the present invention is constituted as described above, by adding dicyandiamide, the slow-acting effect of the paste-like fertilizer is achieved, and the fertilizing effect provides strong sustainability to the growth of crops. The supply of nutrients and the addition of fertilizer were eliminated, and the fibrous protein hydrolyzate provided good solid-liquid separation stability, and high fertilization accuracy improved fertilizer efficiency. It has the effect of suppressing environmental pollution due to the runoff of fertilizer, and is extremely useful in industry.

Claims (1)

[Claims] 1. A paste-like fertilizer containing an organic substance containing dicyandiamide, characterized in that dicyandiamide is added to a paste-like fertilizer containing an organic substance containing a fibrous protein degradation product.