Seedling cultivation device for slope greening

Abstract

Provided is a seedling cultivation device for slope greening that can improve the strength of the slope by the taproots of planted seedlings. 【Solution means】A seedling cultivation device for slope greening for growing seedlings to be planted on a slope, comprising a cylindrical container C1 with a length of 200 mm or more, into which a cylindrical net member N is inserted, and the cultivation soil S is filled through the net member N.

Description

Technical Field

[0001] The present invention relates to a device for cultivating seedlings for slope greening.

Background Art

[0002] Conventionally, in order to green a slope, a framework made of logs or the like is constructed along the contour lines of the slope, and materials containing plant seeds are applied or seedlings are planted between the frameworks (see, for example, Patent Documents 1 and 2).

[0003] By the way, in the method of applying materials containing plant seeds, since it takes time for greening to be completed, in order to shorten this period, a method of planting seedlings has been adopted.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] By the way, as the seedlings used in the method of planting seedlings, generally, seedlings grown in pots or root-wrapped trees obtained by digging up seedlings grown in the ground and cutting the taproots to form root balls are used. Seedlings grown in pots and root-wrapped trees have the advantage that transportation and planting operations are easy and the seedlings are less likely to die because they can be planted as they are without breaking the root balls. On the other hand, for example, in the case of seedlings of broad-leaved trees such as evergreen oaks such as Japanese oak and Japanese chinquapin, in the case of seedlings grown in pots and root-wrapped trees, the elongation of the taproot is inhibited, the taproot does not grow from the root ball, and the roots tend to spread on the surface layer of the soil. For this reason, it has been difficult to expect an improvement in the strength of the slope by the taproots of the planted seedlings.

[0006] In view of the problems of the method of planting seedlings in the above-mentioned conventional slope greening method, an object of the present invention is to provide a seedling cultivation device for slope greening that can improve the strength of the slope by the taproots of the planted seedlings.

Means for Solving the Problems

[0007] In order to achieve the above object, the seedling cultivation device for slope greening of the present invention is a seedling cultivation device for slope greening for growing seedlings to be planted on a slope, characterized in that a cylindrical net member is inserted into a cylindrical container having a length of 200 mm or more, and cultivation soil is filled through the net member.

[0008] In this case, the cylindrical container can be one having a length of 300 mm or more.

[0009] Also, the net member can be made of a biodegradable material.

[0010] Also, a cylindrical net member can be inserted into the cylindrical container, cultivation soil can be filled through the net member, seeds of evergreen oaks can be sown, and they can be managed together in a cultivation bucket.

Effects of the Invention

[0011] According to the seedling cultivation device for slope greening of the present invention, the seedlings to be planted on the slope can grow with taproots having a length of 200 mm or more. By planting these seedlings in a hole drilled to a depth equal to or greater than the length of the taproot on the slope without breaking the root ball, the growth of the taproots of the planted seedlings is not hindered, and the strength of the slope can be improved by the taproots of the planted seedlings.

Brief Description of the Drawings

[0012]

Figure 1

Figure 2

Embodiments for Carrying Out the Invention

[0013] Hereinafter, embodiments of the seedling cultivation device for slope greening of the present invention will be described with reference to the drawings.

[0014] Figs. 1 to 2 show an embodiment of the seedling cultivation device for slope greening of the present invention. The seedling cultivation device for slope greening of the present invention is for growing seedlings T used in the slope greening method of planting seedlings T on a slope G shown in Fig. 2, and these seedlings T can be grown by the method shown in Fig. 1.

[0015] First, as shown in Fig. 1(1), a cylindrical net member N is inserted into a cylindrical container C1 made of bamboo or synthetic resin with a node removed having an inner diameter of 80 to 100 mm, a length of 200 mm or more, preferably about 300 mm or more (up to 500 mm), and cultivation soil S is filled through this net member N. The net member N is for preventing the root ball of the seedling T from collapsing during planting, and a synthetic resin one, particularly one made of a biodegradable material that decomposes in the soil in about several years, can be preferably used. For the cultivation soil S, soil with good drainage and containing fertilizer, for example, "Wakayama Soil" (trade name) manufactured by Kusube Sangyo Co., Ltd., can be used.

[0016] Next, as shown in Fig. 1(2), broad-leaved tree seeds Se such as evergreen oaks like Chinese evergreen oak and Japanese evergreen oak are sown in the cylindrical container C1 filled with the cultivation soil S, and they are collectively managed and grown in a cultivation barrel C2.

[0017] In the case of seedlings grown in a favorable environment, usually, in about two years, seedlings T can be obtained in which the taproot R has grown to a length of 200 mm or more, preferably 300 mm or more (the elongation of the taproot R is not inhibited).

[0018] Then, as shown in Fig. 1(3), by taking out the seedling T from the cylindrical container C1, the state where the root ball of the seedling T is protected by the net member N is maintained, and it can be directly planted on the slope G as it is.

[0019] When planting the seedling T in which the taproot R has grown to a length of 200 mm or more, preferably 300 mm or more, obtained in this way, on the slope G, as shown in Fig. 2, the seedling T is planted in a hole H drilled to a depth D (300 mm or more, preferably 500 mm or more, more preferably 1000 mm or more) equal to or greater than the length of the taproot R on the slope G without destroying the root ball.

[0020] The diameter of the hole H is set to an inner diameter of about 80 to 120 mm that can accommodate the root ball of the seedling T without breaking it, and the gap is filled with cultivation soil S containing fertilizer and having good drainage, for example, "Wakayama Soil" (trade name) manufactured by Kusube Sangyo Co., Ltd.

[0021] In this case, on the slope G, if necessary, a timberwork W (see Patent Documents 1 and 2) made of logs or the like is constructed along the contour lines, and after planting the seedling T between the timberworks W, a vegetation base layer C is formed by spraying or the like.

[0022] In this way, by using a broad-leaved tree seedling T in which the taproot has grown to a length of 200 mm or more, preferably 300 mm or more (the elongation of the taproot R is not inhibited) for the seedling T planted on the slope G, and planting this seedling T in a hole H drilled to a depth equal to or greater than the length of the taproot R on the slope G without destroying the root ball, the growth of the taproot R of the planted seedling T is not hindered, and the taproot of the seedling T grows beyond 1 meter about 1 to 2 years after planting, and the strength of the slope G can be improved by the taproot R of the seedling T.

[0023] As described above, the seedling cultivation device for slope greening according to the present invention has been described based on its embodiments. However, the present invention is not limited to the configurations described in the above embodiments, and its configuration can be appropriately changed without departing from the gist thereof.

Industrial Applicability

[0024] Since the seedling cultivation device for slope greening of the present invention can improve the slope strength by the taproots of the planted seedlings, it can be suitably used for the purpose of growing seedlings used in a slope greening method in which a framework made of logs or the like is constructed along the contour lines of the slope and seedlings are planted between the frameworks. In addition, it can be widely used for the purpose of growing seedlings used in other slope greening methods.

Explanation of Signs

[0025] G Slope W Framework H Hole C Vegetation base layer T Seedling R Taproot Se Seed N Net member C1 Cylindrical container C2 Cultivation barrel S Cultivation soil

Claims

1. A seedling cultivation device for greening slopes for cultivating seedlings to be planted on slopes, comprising a cylindrical container having a length of 200 mm or more, a cylindrical net member inserted therein, and cultivation soil filled therethrough.

2. 2. The seedling cultivation device for revegetating a slope according to claim 1, wherein the cylindrical container has a length of 300 mm or more.

3. 2. The seedling cultivation device for greening a slope according to claim 1, wherein the net member is made of a biodegradable material.

4. A seedling cultivation device for greening slopes as described in claim 1, 2 or 3, characterized in that a cylindrical net member is inserted into the cylindrical container, cultivation soil is filled through the net member, seeds of evergreen oaks are sown, and the seeds are kept together in a cultivation bucket.

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