JPS5923481Y2 - Underground structure in lawn area - Google Patents

Description

[Detailed explanation of the invention] This invention is made by covering stones such as crushed stone with a covering material made of fertilizer ingredients, fibers, adhesives, etc., and then laying a coated stone material that serves as a drainage and water-retaining fertilizer layer. This invention relates to an underground structure of a lawn area where grass is cultivated by making the topsoil layer thinner than the conventional method and allowing grass roots to extend to a drainage/water-retaining fertilizer layer.

Conventionally, underground structures for lawn areas, especially golf course greens, have drainage pipes arranged in a dendritic manner at the installation location, with a drainage layer such as a gravel layer, fine gravel layer, or sand layer on top, and a lawn above it. The method used is to create several layers of topsoil and grow grass, but this method is complicated, requires large-scale construction, and increases costs.

Then, the topsoil layer should be 3.
Normally, the thickness is 0 cm or more, and the thick topsoil layer is compacted by human treading, etc., which impairs drainage and soil aeration, and has an adverse effect on the growth of grass.

Furthermore, if the topsoil layer is made thinner, there is less room for the grass roots to expand, and this will also have a negative impact on the growth of the grass due to lack of fertilizer, dryness, etc.

This invention makes the topsoil layer thinner than conventional methods and reduces topsoil compaction, drainage, and poor ventilation due to treading pressure, etc., and also prevents the elongation of turf grass roots by using coated stones coated with fertilizer components, etc. to provide drainage and water retention. The purpose is to create a lawn where grass grows vigorously by forming a fertilizer layer and extending grass roots into the layer.

To explain the embodiment of the present invention in conjunction with the drawings, as shown in Figure 2, the coated stone has a water-retaining property on the surface of the stone, such as crushed stone with a grain size of 5 mm to 20 mm (No. 5 to 6 crushed stone). Fertilizer layer,
Fertilizer components, fibers, adhesives, asphalt emulsions, etc. are coated by spraying or the like.

As shown in Figure 1, this coated stone is laid to a thickness of 15 to 25 crn in the underground area where lawns are grown, and is used as a drainage and water-retaining fertilizer layer, and the top is covered with net or fiber. Lay a 5-15 cm layer of topsoil on top and plant grass.

Grass roots pass through the net layer and extend into the drainage and water-retaining fertilizer layer of the coated stone, promoting the growth of the grass.

In conventional lawns, the turf root zone is only the surface layer, and the drainage layer has only the function of drainage, but this invention eliminates this division of labor, and the entire created layer becomes an extension of the turf roots.

That is, the topsoil layer serves as the conventional soil for growing turfgrass, and at the same time, its main function is to stabilize the turf surface and retain turfgrass.

The drainage water and fertilizer retention layer is 5mm to 20mm thick.
Gravity water on the surface layer is quickly drained through the pores of the grain-sized coated stone and remains in an oxidative state.

Due to the thinness of the topsoil layer and the applied covering material, grass roots extend into the wood chips and absorb the nutrient moisture retained by the covering material.

This area has many voids and rich soil air, which maintains the vitality of the roots and has a great effect on the turfgrass' resistance to trampling pressure.

Furthermore, since the conventional topsoil layer of 30 cm or more is reduced to around 10 cm, construction costs can be extremely low.

In addition, since the main part of the rhizosphere is always kept in an oxidative state, turfgrass growth is significantly promoted and various disorders are reduced.

In addition, when cutting hole cups, such as on golf course greens, water often stagnates without draining in the conventionally thick topsoil layer, but with the underground structure of this invention, hole cups can be cut. The bottom of the depth reaches the drainage layer, and drainage is quick.
This has the advantage that water does not stagnate like before.

[Brief explanation of the drawing]

Figure 1 is a sectional view of the underground structure of the lawn area according to the embodiment of the present invention;
The figure is a cross-sectional view of coated stone. 1...Subsoil layer, 2...Drainage and water retention layer, 3...Coated stone, 4...Net or fibrous layer, 5 ...Topsoil layer, 6...
... Grass leaf part, 7 ... Grass root part, 8 ... Curved crushed stone, 9
...Water retention fertilizer layer.

Claims (1)

[Scope of utility model registration request] The coating material consisting of fertilizer components, fibers, adhesive, etc. is coated with particle size 5.
There is a drainage/water-retaining fertilizer layer made by covering stones such as crushed stone with a thickness of approximately 20 mm to 20 mm, which is laid underground for lawn vegetation, and the upper part of the drainage/water-retaining fertilizer layer is An underground structure for a lawn area that has a net layer or fibrous layer covered with grass and grass on top.