JPH0630135U - Solid fertilizer - Google Patents

Abstract

(57) [Summary] [Objective] In a fertilizer using zeolite as a carrier, to provide means for visually confirming the remaining state of fertilizer components or the arrival of the next fertilization period, and if desired,
To provide stable solid fertilizer components that cannot be mixed together in the liquid state, while at the same time providing a solid fertilizer with an immediate effect comparable to the application of liquid fertilizer. To develop a step. [Constitution] The fertilizer of the present invention is a regular product mainly composed of natural zeolite carrying a fertilizer component and a water-soluble pigment. [Effect] Since the pigment gradually elutes due to irrigation, the residual state of the fertilizer component can be visually detected, and also the soil state can be detected by using an indicator as the pigment. In addition, the incompatible ingredients can be overcome by separately supporting the fertilizer components having incompatible ingredients with each other on the zeolite.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to fertilizers, particularly solid fertilizers suitable for gardening.

[0002]

[Prior art]

 It is well known that zeolite (general term for natural aluminosilicate minerals) has a large adsorptive power and cation exchange ability, and these properties are used to support fertilizer components on this mineral or as a soil conditioner. It is already well known (see, for example, JP-A-51-22549, JP-A-57-102119, JP-A-59-13687, and JP-A-61-266682).

However, the adsorbed fertilizer component gradually flows out by irrigation and diffuses into the soil. However, especially in the case of potting for gardening, the fertilizer holding capacity of the soil in the pot is limited. The effect diminishes relatively quickly. Therefore, it is desirable to let growers know the fertilization time by some method, but such means have not been developed so far.

In addition, some fertilizers are incompatible with each other (for example, calcium and magnesium water-soluble salts react with ammonium phosphate in an aqueous solution to form sparingly soluble calcium phosphate and magnesium phosphate, which precipitate. Therefore, it is often impossible to mix them in the form of liquid fertilizer at the same time.

[0005]

[Problems to be solved by the device]

 In view of the above circumstances, the main object of the present invention is to provide a means for visually confirming the remaining state of the fertilizer component or the arrival of the next fertilization period in the fertilizer using zeolite as a carrier. To do. An additional object of the present invention is to provide a solid fertilizer having a fast-acting effect comparable to that of liquid fertilizer while allowing stable coexistence of fertilizer components that cannot be simultaneously mixed in liquid form.

[Means for Solving the Problems]

In order to solve the above problems, the present invention provides a solid fertilizer characterized by being a fixed product mainly composed of natural zeolite carrying a fertilizer component and a water-soluble pigment. Hereinafter, various elements constituting the device will be described in terms of items.

Zeolite In the present invention, the term “zeolite” means a hydrous tectosilicate mineral of alkali, alkaline earth and aluminum. Examples thereof include borofluorite, ryopuffite, soda fluorite, soda fluorite, dak fluorite, morden fluorite, kifu fluorite, taba fluorite, hilphite, kaijuji fluorite, gismondite, Thomson fluorite, gmelin fluorite. In the present invention, "fixed shape" means not only a strict fixed shape artificially shaped from natural zeolite powder, but also macroscopic granules obtained by sieving natural zeolite minerals to a certain particle size. Including a thing.

Fertilizer component The fertilizer component is mainly composed of three major components, N, P and K, and a small amount or micronutrient such as S, Ca, Mg and Fe, Mn, Cu, Zn, Mo, B, Cl. A mixture of The ratio of N: P: K is generally 1: 2: 1. A very small amount of trace elements below Fe is sufficient.

One of the features of the present invention is that it does not have a contraindication as in general liquid fertilizer. For example, a fertilizer component containing urea and a fertilizer component containing lime phosphate are separately supported on zeolite. If so, by mixing both supported zeolites, they can be stored for a long time or directly applied without fear of incompatibilities.

It is ideal that each of the above components is directly mixed in the powder raw material at the time of granulation in that the hardly soluble fertilizer component can be freely added, but when natural granular zeolite is used, Adsorb fertilizer components in the form of an aqueous solution. Although the adsorbed fertilizer components elute fairly rapidly in the model elution test, the actual plant pot contains the soil, and the eluted fertilizer components are adsorbed in the soil. Even if is easily soluble, it is possible to obtain a sustained effect that is practically sufficient. The amount of liquid fertilizer that can be supported on the zeolite granules by this adsorption method is about 10 to 30% by weight.

Water-Soluble Pigment The water-soluble pigment is used as a standard to inform the elution state of the water-soluble fertilizer component, but at the same time, it is also useful for giving a pleasant aesthetic impression to the solid fertilizer product. As the pigment used here, pigments or dyes which are not easily laked by zeolite are suitable. Natural edible pigments such as copper chlorophyllin, β-carotene, cochineal, anthocyan and red yeast rice pigment are less likely to form lakes and are therefore preferable for the purpose of those which are less than the synthetic pigment in terms of fastness. However, synthetic dyes are sufficiently practical if they are sprayed in a small amount on zeolite.

However, for the purpose of designing, it is more preferable to use an indicator having a color change range between pH 5 and 8 as a colorant. For example, methyl red changes from red (pH 4.4) to yellow (pH 6.2), so if the degree of coloration is orange, it is a warning against excessively acidic soil. Examples of indicators that can also be used include those shown in Table 1 below.

Table-1

The above indicators are dissolved in water, dilute alkaline water or dilute ethanol water according to their respective properties, and spray-dried on a dried fertilizer-adsorbed zeolite, or the indicators are dissolved in a fertilizer solution, and the zeolite is dissolved. Adsorb to. At this time, if necessary, two kinds of indicators, for example, a mixture of methyl red and bromcresol green mixed at a ratio of 1: 1 will show a gray color at pH 5.4, but a red color on the acidic side and a red color on the alkaline side. Since each color changes to green sharply, the hydrogen ion concentration of the soil can be accurately known.

[0015]

[Action]

 The fertilizer component supported on the zeolite first elutes rapidly and then gradually in a numerical function due to irrigation, but in parallel with it, the pigment also elutes and gradually fades, so by observing the degree of coloring, The next fertilization time can be determined. In practice, it is virtually impossible for farmers and horticulturists to quantify the fertilizer components in soil, so it is actually possible to judge the degree of fertilization and the timing of fertilization by observing the color tone of the applied zeolite. It has great significance.

[0016] In particular, when the pigment is composed of a hydrogen ion concentration indicator, it is possible to know not only the runoff of the fertilizer components but also the approximate soil hydrogen ion concentration by the color tone, and the pH control suitable for the plant to be fertilized can also be performed. It will be possible.

[0017]

【Example】

 Hereinafter, embodiments of the invention will be described by way of examples, but the exemplification is merely for explanation, and does not mean a limitation or limitation of the idea of the invention.

Test Example 1 30 g of granular zeolite (particle size 2 to 3 ^m / _m ) was immersed in a commercially available fast-acting liquid fertilizer A (component: 7.10% nitrate nitrogen, water-soluble potassium (K ₂ O conversion) 3.17%). Then, it was dried with hot air to obtain a fertilizer-supporting zeolite. The amount of fertilizer components adsorbed was 26.8% by weight (0.367 g / g).

The above fertilizer-supported zeolite was packed in a titration buret and perfused with 30 mL of deionized water to measure the amounts of N and P in the eluate. The results are shown in Fig. 1. As shown in the figure, the concentrations of nitrogen and potassium decrease almost exponentially with each perfusion and become almost 0 at the fifth perfusion, indicating that the adsorbed fertilizer is almost completely utilized.

Test Example 2 In the test of the previous example, liquid fertilizer was commercial fast-acting liquid fertilizer B (component: ammonia nitrogen 1.19%, water-soluble phosphorus (P ₂ O ₅ conversion) 3.18%, water-soluble potassium (K ₂ O conversion). ) 7.32%; similar to the fertilizer of Test Example 1, except that the compounding contraindication) was changed. The amount of fertilizer components adsorbed was 13.4 wt% (0.155 g / g). The results are shown in Figure 2. Even in this case, the elution tendency of the components due to irrigation was the same as in the previous example.

Example 1 A fertilizer-supported zeolite was obtained in the same manner as in Test Example 1. A 0.5% aqueous solution of litmus was sprinkled on this and dried with warm air to obtain a pale purple granular colored fertilizer. As shown in the model diagram of FIG. 3, in each particle 1 of the fertilizer obtained here, the fertilizer particle 2 and the indicator particle 3 are carried on the surface 1a and the tunnel structure 1b inside the fertilizer, At the same time, the color changes depending on the pH of the soil. When this discoloration becomes red or blue, it can be visually recognized that the soil is acidic or alkaline soil unsuitable for cultivation.

Example 2 The fertilizer-supported zeolites of Test Example 1 and Test Example 2 were mixed at a weight ratio of 1: 1 and a 0.25% aqueous solution of bromothymol blue was spray-dried to the mixture to give a color-developing Zeo. The light-supported fertilizer was obtained. This fertilizer can be used without any contraindications and turns yellow when the pH of the soil becomes acidic.

[0023]

[Effect of device]

 As described above, the present invention contributes to the rationalization of agricultural and horticultural work by providing a solid fertilizer with a slow-acting effect that visually indicates the residual state of fertilizer components, more preferably the soil state. sell.

[Brief description of drawings]

FIG. 1 is a graph showing the elution state of commercial liquid fertilizer A supported on zeolite.

FIG. 2 is a graph showing the elution state of commercially available liquid fertilizer B supported on zeolite.

FIG. 3 is a model view of the structure of the solid fertilizer according to the present invention.

[Explanation of symbols]

 1: Whole solid fertilizer particles of the present invention 1a: 1 surface 1b: 1 tunnel structure 2: 1 fertilizer component 3: 1 pigment component

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Creator Tatsuyuki Kimura 185 Iwaguro, Tada, Ozu City, Ehime Prefecture, Japan Chemitec Co., Ltd.

Claims (4)

[Scope of utility model registration request] 1. A solid fertilizer, which is a fixed product mainly composed of natural zeolite carrying a fertilizer component and a water-soluble pigment. 2. The fertilizer according to claim 1, wherein the solid fertilizer is a mixture of fertilizer components which are mutually incompatible. 3. The fertilizer according to claim 1, wherein the soluble pigment is a hydrogen ion concentration indicator. 4. The fertilizer according to claim 2, wherein the indicator has a discoloration range of pH 5-8.