JPH11137081A - Completely degradable vegetational tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vegetational tool degrading in a suitable period when executed in a ground. SOLUTION: This vegetational tool 1 has a body 2 composed of a biodegradable plastic. The body 2 has a ground penetrating part 5 and an ammonia nitrogen fertilizer 8 is held therein. A pointed part made of a metal is attached to the tip of the ground penetrating part 5 and the vegetational tool 1 can readily be penetrated into the ground by the metallic pointed part. Since the degradation of the body 2 and corrosion of the pointed part made of the metal are promoted by the ammonia nitrogen fertilizer 8, the tool 1 is degraded in a suitable period after thick growing of plants on the vegetational ground to lose the original shape.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support for supporting a seedling, a stud for fixing a vegetation used for slope revegetation work to the ground, and a net-like body used for vegetation work floating above the ground. And a vegetation device for supporting or fixing a plant or vegetation material by penetrating one end portion into a vegetative disc like a spacer for use in a plant.

[0002]

2. Description of the Related Art Conventionally, a support for a seedling, a skewer for fixing a vegetation used for slope greening work to a vegetation board, and a net (for example, a net) used for vegetation work floated from the ground and supported. Vegetation tools such as spacers for wood,
It is made of bamboo, metal, plastic such as polyethylene.

[0003]

However, wood and bamboo cannot be mass-produced, and it is extremely difficult to control the decomposition rate in soil. Further, if the metal is left for a long time in a state where the original is fixed to the vegetation disk, there is a risk that a pedestrian may be injured by the metal object, particularly on a slope with a soft scaffold such as an embankment slope. In addition, plastics such as polyethylene have an environmental problem in that they remain semipermanently on the planting disc.

[0004]

SUMMARY OF THE INVENTION In order to solve such problems, the present invention provides a biodegradable method in which a main body such as a seedling support, a vegetation spit, and a spacer can be decomposed by soil microorganisms and naturally reduced. The vegetation is made of plastic.

However, since biodegradable plastics have high elasticity like plastics such as polyethylene, even if a pile-shaped member made of this biodegradable plastic is directly driven into a cut slope, etc. It rebounds due to elastic rebound and cannot penetrate to the desired depth.
Therefore, a metal pointed tip is attached to the ground penetration portion of the vegetation tool main body at the tip of the ground penetration portion to facilitate penetration into the ground.

On the other hand, soil microorganisms are involved in the decomposition of biodegradable plastics, and low molecular ammonia nitrogen is required for the propagation of soil microorganisms and the growth of plants. But,
Since the biodegradable plastic has an extremely high ratio of carbon to nitrogen (C / N ratio: the ratio of carbon to nitrogen) in organic matter, the biodegradable plastic deprives the soil of ammonia nitrogen when decomposing, As a result, the ammonia nitrogen required for plant growth is insufficient, resulting in so-called nitrogen starvation. Therefore, in the present invention,
At least the portion of the ground penetrating part of the body made of biodegradable plastic near the metal pointed tip holds ammonia nitrogen fertilizer, and the decomposition of the body made of biodegradable plastic is promoted by the ammonia nitrogen. Is done.

[0007]

As described above, the vegetation device according to the present invention has its main body made of biodegradable plastic.
Unlike vegetation tools made of wood or bamboo, they can be produced in large quantities. Also, since the metal point is attached to the penetration,
Vegetation can easily penetrate even on hard ground such as cut slopes. Furthermore, the decomposition of not only the body made of biodegradable plastic but also the metal cusps is promoted by the ammonia nitrogen fertilizer held in the vegetation tools, so that the metal cusps can be ground over a long period of time. And the metal object does not injure the person walking on the vegetation. And because the ammonia nitrogen required for biodegradable plastic decomposition is supplied from the vegetation tools, the natural ammonia nitrogen contained in the ground can be used for plant growth, and the plant does not fall into a nitrogen starvation state .

[0008]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. In FIGS. 1 and 2, a vegetation device indicated by reference numeral 1 is used, for example, to fix a vegetation used for, for example, slope greening, and a coating (net, rather than the like) for protecting the vegetation to a vegetation disc. A nail-shaped main body 2 made of a known biodegradable plastic is provided. The main body 2 has a cylindrical shaft portion 3, and one end (upper end) of the shaft portion 3 expands in the radial direction to form a hitting portion 4.
Are formed. On the other hand, the other end side (lower end side) of the shaft portion 3 is a penetration portion 5, and a distal end portion of the penetration portion 5 is a conical portion 6. The conical portion 6 is covered with a metal-conical tip 7 in the shape of a conical container having an internal shape corresponding to the outer shape of the conical portion, so that the penetration portion 5 can easily penetrate the ground. An ammonia nitrogen fertilizer 8 is held on the conical portion 6 of the main body 2 and on the surface of the penetrating portion 5 located in the vicinity thereof.

Examples of the biodegradable plastic constituting the main body 2 of the vegetation device 1 include those made of a polymer obtained by fermentation synthesis of microorganisms, and natural polymers such as plant-derived starch and animal-derived chitosan. And those composed of synthetic polymers such as polycaprolactane,
All are composed of carbon, hydrogen and oxygen, and have the property of being naturally reduced to carbon dioxide and water when decomposed by microorganisms.

The metal tip 7 is made of a known metal such as iron or aluminum, and a material whose corrosion is promoted by the ammonia nitrogen fertilizer 8 is preferably used.

The ammonium nitrogen fertilizer 8 comprises ammonium sulfate, ammonium nitrate,
Humic acid ammonium fertilizers, ammonium sulfate-based chemical fertilizers, advanced chemical fertilizers containing phosphorus and the like are preferably used.

[0012] Immediately after the main body 2 is injection-molded and before the main body 2 is solidified, the ammonia-nitrogen fertilizer 8 is first adhered to the penetrating portion 5 and then the metal tip 7 and the ammonium nitrogen fertilizer 8 are formed. The pointed head 7 is held over the conical portion 6.

The vegetation tool 1 formed in this manner strikes the hitting portion 4 to penetrate the metal pointed portion 7 and the penetrating portion 5 into the ground and lays it on a slope or the like, similarly to the conventional eye skewers. The fixed vegetation and the reticulated body are used by the vegetation tool 1 until the plant grows vigorously. To prevent the runoff.

Then, the main body 2 of the vegetation device 1 made of biodegradable plastic is decomposed by soil microorganisms to carbon dioxide and water, which are naturally reduced. Further, the decomposition of the main body 2 is promoted by the ammonia nitrogen fertilizer 8, and the plant loses its shape and disappears relatively early after the plant has grown on the slope. In addition, the decomposition rate of the main body 2 can be adjusted by the amount of the ammonia nitrogen fertilizer 8 held therein. However, the ammonia nitrogen contained in the soil is not deprived by the decomposition of the biodegradable plastic, and the plant absorbs the ammonia nitrogen in the soil and grows well.

Further, similarly to the main body 2 of the vegetation tool 1, the corrosion of the metal tip 7 is promoted by the ammonia nitrogen fertilizer 8, and the original shape is lost relatively early. Therefore, even when walking on the vegetation board, there is no risk of injury due to the metal point 7.

In addition, holes in the ground formed after the vegetation tools 1 are completely decomposed will later become nests of black wasps, ants and the like, forming a rich ecosystem. In particular, ants can be found in ant spraying plants, e.
It promotes the establishment of Yamamomo, violet, Kikeman, etc. and its distribution.

In addition, in the above embodiment, a conical container-shaped member is used as the metal point, but as shown in FIG. 3, a metal point 9 made of a solid conical member may be used. . In this case, a projection 10 is integrally formed on the surface of the metal point 9 facing the main body 2, and the end of the main body penetrating portion 5 corresponds to the metal point 9, and the end of the main body penetrating portion 5 is a flat surface in the transverse direction. The flat surface is provided with a hole 11 into which the projection 10 can be fitted, and the projection 10 is press-fitted into the hole 11 so that the main body 2 holds the metal point 9. The connection form between the metal point 9 and the main body 2 is not limited. For example, an engagement recess is formed in the metal point 9 and the projection formed on the main body 2 is fitted into the engagement recess. May be combined.

The ammonia nitrogen fertilizer 8 is sprayed and held on the body 2 which has not been solidified yet.
For example, even if a dent such as a groove is formed on the outer peripheral surface of the main body 2 and an ammonia nitrogen fertilizer is accommodated in the dent, and the dent is covered with an adhesive or a sheet made of a natural material to prevent falling off, Good.

Further, in the above embodiment, the ammonia nitrogen fertilizer 8 is held only in the penetrating portion 5 of the vegetation tool main body 2, but may be held over the entire length of the main body 2.

In the above, the embodiment in which the present invention is applied to a vegetation device (skewer) for holding a vegetation on the ground has been described.
The present invention can be similarly applied to a support for supporting a seedling, a spacer for supporting a net used for vegetation work by lifting it off the ground, and the shape of a vegetation tool is appropriately determined according to each purpose and use. It can be changed, and such a form also belongs to the scope of the present invention.

Also, a projection may be appropriately provided on a main body such as a skewer or a spacer or a hitting portion, and the projection material may be used to stop a covering material such as a net.

[Brief description of the drawings]

FIG. 1 is a perspective view of a vegetation tool according to the present invention.

FIG. 2 is an exploded perspective view of the vegetation tool shown in FIG.

FIG. 3 is a partially exploded perspective view showing another embodiment of the vegetation tool according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... vegetation implement, 2 ... main body, 3 ... shaft part, 4 ... hitting part, 5 ... penetration part, 7 ... metal tip, 8 ... ammonia nitrogen fertilizer.

Claims (1)

[Claims] 1. A body made of a completely biodegradable plastic having a ground penetrating portion, and a metal tip attached to a tip portion of the ground penetrating portion, wherein the ground penetrating portion has at least the metal penetrating portion. A completely degradable vegetation device characterized in that a part near the head holds an ammonia nitrogen fertilizer.