JPH0328748Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a vegetation bag that is used on cut slopes and the like that are artificially created in civil engineering works.

(Conventional technology) Conventionally, concrete blocks have been installed on slopes as a greening method on cut slopes where hard ground such as bedrock is difficult for plant root systems to penetrate, or where plants have poor growth. Alternatively, a method is generally used in which a slope is divided and protected by constructing a slope using cast-in-place concrete, and a vegetation sandbag filled with soil is pasted within the frame.

As one of the above-mentioned vegetation bags, a part of the bag formed of a coarse mesh material is made into a double structure to form a pocket-like storage part, and in this storage part, slow-release fertilizer, ordinary fertilizer, etc. Japanese Utility Model Application No. 59-38555 and Utility Model Application Publication No. 1983-1989 house a cylinder filled with soil improvement sources such as soil improvement agents and water retention agents to supply nutrients stably to plants over a long period of time. This is proposed in Publication No. 147344.

This vegetation bag is made by putting soil inside to form a sandbag, and since the fertilizer inside the cylinder deteriorates excessively when it comes into contact with the outside air, the cylinder is generally placed on the ground side. Can be pasted.

(Problem that the invention aims to solve) However, since this vegetation bag has a cylinder filled with soil improvement source located on its outer periphery, fertilizer is absorbed by rainwater etc. that has permeated into the sandbag. Once dissolved, it had the disadvantage that it was easily washed away without being absorbed into the soil within the sandbag.

In addition, the slow-release fertilizer can only exert its function mainly through the intervention of soil microorganisms, and the fertilizer located on the cut surface side, that is, the part that is not in contact with the soil, It has the disadvantage that nutrients cannot be made effective by soil microorganisms.

In addition, soil conditioners, water retention agents, etc. are also located on the cut surface side of the outer periphery, which has the disadvantage that they cannot effectively contribute to the soil within the vegetation bag.

As a result of the above, there was a problem in that plants could not effectively absorb nutrients from the soil bags for vegetation, and would wither and die due to lack of fertilizer.

(Means for Solving the Problems) The present invention was made to solve the above problems, and it is possible to use a cylindrical body with a soil improvement source inside the vegetation bag to an extent that does not hinder the growth of plants. The bag is housed in a bag formed of a roughly knitted net-like body, and one end of the cylinder is attached to approximately the center of the bottom of the bag, while the opening is expanded to the upper end of the opening of the bag. A string is provided that passes approximately through the center of the opening in this state, and the other end of the cylindrical body is attached to the center of the string.

Therefore, if the opening of the vegetation bag is widened, the soil improvement source containing fertilizer etc. will be located in the center of the bag, and if soil is poured into this bag, the soil improvement source will be located in the center of the soil. Therefore, fertilizers and the like are supplied to the soil by rainwater infiltration without being washed away, and nutrients can be stably supplied to plants over a long period of time.

(Example) Hereinafter, the present invention will be described based on drawings which are one example.

In FIG. 1, reference numeral 1 indicates a vegetation bag according to the present invention, and this vegetation bag 1 roughly consists of a bag body 2, a tube filled with a soil improvement source, and a tube provided inside the bag body 2. It is composed of a body 13.

As shown in FIG. 2, the bag 2 has seeds 5 and fertilizer 6 spread at a uniform density between conventionally known water-degradable sheets 3 and 4 mixed with fibers made of thermoplastic resin. Strings of synthetic resin (polyethylene, polypropylene), etc. are attached to the vegetation sheet 8 in which the seeds 5 and fertilizer 6 are partitioned and stored by heat-sealing 7 at predetermined intervals. A net-like body 9 is formed by knitting a net-like body 9 and a vegetation substrate 11 is bonded with a heat seal 10 into a bag shape.

The cylindrical body 13 is made of a known water-decomposable sheet, and is filled with a mixture of soil improvement sources such as a slow-release fertilizer, a normal fertilizer, a soil conditioner, and a water retention agent (not shown).

The cylindrical body 13 is housed inside the bag 2, and one end 13a of the bag 2 located on the opening 2a side is symmetrically provided at the upper end of the opening 2a so as to pass through the center thereof. The other end portion 13b is fixed to approximately the center of the bottom portion 2b.

The end portion 13b of the cylindrical body 13 may be fixed to the bottom portion 2b by bonding with an adhesive or by sewing when the bag body 2 is formed.

When the vegetation bag 1 having the above structure is opened by holding the opening 2a of the bag body 2, the cylindrical body 13 opens into the opening 2a.
Located approximately in the center of

In this state, soil is poured into the opening 2a, and the opening 2a is closed with a tie string 14 provided on the opening 2a side of the bag body 2, and a soil bag for vegetation as shown in FIG.
form 5.

Note that the method for closing the opening 2a is as follows:
4, but may be a fastener, a clip, or any other means that can be closed.

Then, this soil bag 15 for vegetation is pasted within a slope constructed with concrete blocks or the like on a cut slope or the like.

In this way, the vegetation sandbag 15 constructed on the slope is protected from the fertilizer, etc. inside the sandbag 15 by the cylindrical body 13 and the surrounding soil even in the event of rain or the like. Sandbags 15 are not easily washed away by passing water.
Stay within.

For this reason, soil improvement sources such as fertilizers are
In particular, slow-release fertilizers are gradually decomposed by soil microorganisms, maintain their fertilizing effect over a long period of time, and act effectively on plant growth.

In the above embodiment, the bag body 2 is provided with the vegetation sheet 8 on the entire inner surface of the net-like body 9, but it is not limited to this, and it may be provided only on a part,
The vegetation sheet 8 may not be provided, and the seeds 5 and fertilizer 6 may be mixed into the soil that is put into the sandbag 15.

Further, in the embodiment, the sheet 3 of the bag body 2,
4 and the cylindrical body 13 are made of a known water-decomposable sheet, but they are not limited to this, and pulp,
It may be an organic vegetation sheet made by inserting a beaten and fibrillated organic soil improvement material and drying it, or the cylinder 13 may be formed from knitted fabric or straw.

In addition, this organic vegetation sheet gradually decomposes when it contains rainwater, etc., and functions as a soil conditioner. It also absorbs fertilizer and prevents the root system of plants from coming into direct contact with fertilizer and causing concentration problems. do.

Further, in the above embodiment, the vegetation sheet 8 is made of two sheets 3 and 4 that sandwich the seeds 5 and the fertilizer 6, but the present invention is not limited to this. Seeds 5 may be provided in the upper layer, and fertilizers 6, soil improvement materials, etc. may be stored separately in the lower layer. In this case, since the seeds 5 do not come into direct contact with the fertilizer 6, concentration disturbances caused by the fertilizer 6 can be prevented.

Furthermore, in the embodiment, the opening 2a of the bag body 2
Two strings 12 that hold the cylinder 13 on the sides are provided symmetrically at the upper end of the opening 2a so as to pass through the center thereof, but the number and arrangement of the strings are not limited to the above embodiment. Opening 2 of bag body 2
It is sufficient that one end of the cylindrical body 13 is located in the center of the expanded state of a.

(Effects of the invention) As is clear from the above explanation, the vegetation bag according to the invention has a cylindrical body filled with a soil improvement source inside a bag formed of a net-like body, and a cylindrical body filled with soil. When a vegetation sandbag is formed, the sandbag is positioned approximately at the center of the bag.

Therefore, if the opening of the bag is widened, the cylinder will always be located in the center, and if soil is poured into the bag, the cylinder will be located in the center of the soil.

Therefore, if you lay a bag filled with soil on the slope,
Fertilizer, etc. is diffused into the sandbag by gravity water caused by rainfall passing through the vegetation bag, and is diluted to an appropriate concentration for plant growth, preventing concentration disturbances in plants and stably maintaining plants for a long period of time. The nutrients necessary for growth can be retained, and fertilizer will not be wasted outside.

Furthermore, during this period, soil microorganisms multiply in large quantities, allowing the slow-release fertilizer to fully demonstrate its effectiveness and promoting soil fertilization.

For this reason, the plants will not wither and die due to lack of nutrients, but will grow vigorously, making it possible to achieve ideal greenery.

[Brief explanation of the drawing]

FIG. 1: A perspective view of a vegetation bag according to the present invention.
Fig. 2: Partial cross-sectional view of the vegetation bag. Figure 3: Perspective view of vegetation sandbag. 1... Vegetation bag, 2... Bag body, 3, 4... Sheet, 5 seeds, 6... Fertilizer, 8... Vegetation sheet, 9
... Reticular body, 11 ... Vegetation substrate, 12 ... String, 1
3... Cylindrical body, 15... Sandbag for vegetation.

Claims (1)

[Claims for Utility Model Registration] (1) A cylinder having a soil improvement source inside is housed in a bag formed of a coarse mesh body, and one end of the cylinder is attached to the approximate center of the bottom of the bag. On the other hand, a string is provided at the upper end of the opening of the bag and passes approximately through the center of the opening when the opening is expanded, and the other end of the cylinder is attached to the center of the string. Vegetation bag. (2) The vegetation bag according to claim 1, wherein the bag body includes a vegetation sheet having at least seeds on its inner surface. (3) The vegetation bag as set forth in claims 1 and 2 of the utility model registration claim, wherein the cylindrical body is formed of a water-degradable sheet. (4) Claim 3 of the above-mentioned utility model registration claim, characterized in that the water-degradable sheet is an organic vegetation sheet made from pulp and a beaten and fibrillated vegetable organic soil improvement material. Vegetation bag as described. (5) The vegetation bag according to claims 1 and 2 of the utility model registration claim, wherein the cylindrical body is made of fabric. (6) The vegetation bag according to claims 1 and 2 of the utility model registration, wherein the cylindrical body is made of straw.