JPH0652406U - Fertilizer pile - Google Patents

Abstract

(57) [Summary] [Purpose] To facilitate the driving of fertilizer piles and improve the effect of deep-layer fertilization. [Structure] A cap 4 is attached to the tip of a cylinder 1 that covers the fertilizer component 2 solidified into a rod shape. The cap 4 is formed into a conical shape to reduce the driving resistance. Further, the cap 4 is formed of biodegradable plastic, the cap 4 is decomposed by the action of microorganisms, and the fertilizer component is also eluted from the tip of the cylinder 1 by the decomposition.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a fertilizer pile driven into soil.

[0002]

[Prior art]

 As the fertilizer piles for fertilizing the roots of plants, those shown in FIGS. 4 and 5 have been conventionally known. In this fertilizer pile, a paper tube 12 provided with a coating layer 11 made of paraffin is filled with a fertilizer component 13 containing three fertilizers of nitrogen, phosphoric acid, and potassium and solidified, and embedded in the soil by driving into the soil. However, the fertilizer component is made to elute from the paper tube.

Since the fertilizer pile is buried in the soil by being driven, fertilization is easy, and since the fertilizer component does not elute at one time, it has excellent sustainability and exerts a great effect on tree growth. The cylinder decomposes in the soil and becomes soil organic matter, which not only contributes to the chemical improvement of the soil, but the hole after absorbing fertilizer serves as an air and water supply path into the soil, which gives favorable conditions to the roots, etc. It has the characteristics of.

[0004]

[Problems to be solved by the device]

 In the fertilizer pile, the tip of the paper tube 12 is squeezed into a conical shape, and a plurality of projections 15 extending in the axial direction are provided on the outer circumference of the conical portion 14 at equal intervals in the circumferential direction. Since the tip is cruciform, there is a large resistance to driving when driving, and it may not be possible to drive when the soil is hard, and there is the inconvenience that the fertilizer pile will break due to excessive driving.

This invention has a technical object to solve the above-mentioned inconvenience and to facilitate the driving of the fertilizer pile.

[0006]

[Means for Solving the Problems] In order to solve the above-mentioned problems, in the present invention, a conical cap made of biodegradable plastic is attached to the tip of a cylindrical body covering a fertilizer component solidified in a rod shape. It adopted a different configuration.

Here, the tubular body may be made of paper or may be made of biodegradable plastic.

Further, instead of biodegradable plastic, water-soluble thermoplastic resin may be used.

[0009]

[Action]

 As described above, since the conical cap is attached to the tip of the tubular body, the driving resistance of the fertilizer pile is small, and the fertilizer pile can be smoothly driven into the soil.

[0010]

【Example】

 An embodiment of this invention will be described below with reference to FIGS.

As shown in FIGS. 1 and 2, a solidified fertilizer component 2 is filled inside a tubular body 1 made of paper. Fertilizer component 2 has 3 fertilizers of nitrogen, phosphoric acid, and potassium as main components, and pesticides are mixed as needed.

A coating 3 made of paraffin is provided on the outside of the cylindrical body 1, and a cap 4 made of biodegradable plastic is attached to the tip.

Here, the biodegradable plastic refers to a plastic that is decomposed by the action of microorganisms in the natural environment. Examples of such biodegradable plastics include polymer alloys containing starch as a main component and hydrophilic and biodegradable modified polyvinyl alcohol.

The cap 4 has a conical portion 4a at its tip and a cylindrical portion 4b at its rear end. The cap 4 is attached to the tubular body 1 by means of press-fitting or adhering the tubular portion 4b to the tubular body 1. Here, the pyramidal portion 4a may be a cone or a pyramid.

The fertilizer pile shown in the embodiment has the above-mentioned structure, and when fertilizing using the fertilizer pile, the cap 4 is first driven into the soil as in the conventional fertilizer pile.

At the time of driving, the head cover 5 is covered on the rear end portion of the cylindrical body 1, and the head cover 5 is hammered with a mallet or the like. Here, the head cover 5 may be fitted in the tubular body 1 in advance.

In the embodiment, the head cover 5 is made of biodegradable plastic and is fixed to the rear end of the cylindrical body 1 by means of press fitting or adhesion.

At the time of driving the fertilizer pile as described above, since the cap 4 has a conical tip, the driving resistance is small, the cap 4 smoothly enters the soil, and the fertilizer is used even in the relatively hard soil. It can be penetrated without breaking the pile.

In the driven state of the fertilizer pile, the fertilizer component 2 is eluted from the cylinder 1 made of paper. Further, since the cap 4 is made of biodegradable plastic, the cap 4 is decomposed by microorganisms in about several months, and the fertilizer component 2 is also eluted from the tip of the cylinder 1. Instead of the cylinder 1 made of paper, a cylinder made of biodegradable plastic may be used. In this case, the conical cap 4 can be simultaneously formed on the tip of the tubular body 1, and the fertilizer component 2 can be eluted by the decomposition of the tubular body 1.

FIG. 3 shows another example of the cap 4. In the cap 4 shown in FIG. 3A, a plurality of ribs 6 are provided on the outer circumference.

In the cap 4 shown in FIG. 3B, a cylindrical portion 4c to be inserted inside the cylindrical body 1 is provided at the rear end of the conical portion 4a, and a plurality of ribs 6 are provided on the outer circumference.

In the cap 4 shown in FIG. 3C, a plurality of grooves 7 extending in the axial direction are provided on the outer circumference.

In any of the caps 4, the formation of the ribs 6 or the grooves 7 can increase the strength of the cap 4 and can effectively prevent the damage of the cap 4 during driving.

Although each of the caps 4 shown in FIG. 3 is formed with a plurality of small holes 8 in the conical portion 4a and the fertilizer component 2 is eluted from the small holes 8, the small holes 8 are You may omit it.

In the embodiment, at least the material of the cap 4 among the cylindrical body 1 and the cap 4 is formed of biodegradable plastic, but instead of the biodegradable plastic, it has excellent melt moldability and is soluble in water. A water-soluble thermoplastic resin may be used as the material.

Examples of the water-soluble thermoplastic resin include Ecomaty AX manufactured by Nippon Synthetic Chemical Industry Co., Ltd. By using such a water-soluble plastic resin, the cap 4 is dissolved or biodegraded by water, so that the fertilizer component 2 in the cylinder 1 is eluted as in the case of using biodegradable plastic. You can

[0027]

【effect】

 As described above, in the fertilizer pile according to the present invention, since the conical cap is attached to the tip of the cylindrical body, the resistance at the time of driving is small, and the fertilizer pile can smoothly enter the soil. This makes it possible to drive the fertilizer piles into the soil easily, and also to drive the soil into relatively hard soil.

In addition, by forming the cap from biodegradable plastic or water-soluble thermoplastic resin, the cap is decomposed or dissolved by microorganisms, and the cap is decomposed or dissolved to allow fertilizer components to be fed from the tip of the cylinder. Since it dissolves, the fertilizing effect in the deep part can be enhanced and the effect of environmental protection can be enhanced.

Further, by forming the tubular body with biodegradable plastic or water-soluble thermoplastic resin, it is possible to obtain more effect by environmental protection.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view showing an embodiment of a fertilizer pile according to the present invention.

FIG. 2 is an exploded perspective view of the above.

3 (a), (b), and (c) are perspective views showing another example of the same cap.

FIG. 4 is a partially cutaway front view showing a conventional fertilizer pile.

5 is a sectional view taken along line VV of FIG.

[Explanation of symbols]

 1 Paper tube 2 Fertilizer component 4 Cap

Claims (3)

[Scope of utility model registration request] 1. A fertilizer pile in which a conical cap made of biodegradable plastic is attached to the tip of a cylindrical body for covering the fertilizer component solidified in a rod shape. 2. The fertilizer pile according to claim 1, wherein the tubular body is made of biodegradable plastic. 3. The fertilizer pile according to claim 1 or 2, wherein a water-soluble thermoplastic resin is used instead of a biodegradable plastic as a material for the tubular body.