JPH0425765B2 - - Google Patents

Description

[Detailed description of the invention]

(Industrial Field of Application) The present invention relates to a green bed soil structure, and more specifically, to a green bed soil structure that has good fertilizer and water retention properties and emphasizes drainage performance. (Conventional technology) Traditionally, the green structure was to install a drainage system on the ground, and then lay about 10 cm of green stone on top of it.
The structure is such that about 40 cm of bed soil is added on top of that and either seeds are sown or grass is pasted. This bed soil is mainly made of local soil, but clay minerals and organic compost are mixed with the local soil to improve water retention and fertilizer retention from the viewpoint of lawn growth, and sand is added to improve drainage. It is a mixture of (Problem to be solved by the invention) However, as the years pass, even with the bed soil made with water and fertilizer retention and drainage in mind, the clay content is lost due to treading pressure or running water. It was pointed out that caking caused poor drainage, causing root rot and disease in the lawn. Therefore, in recent years, many sand greens have been designed that use only sand and soil conditioner as the bed soil and emphasize drainage. However, because sand green is too sunny, it has no water or fertilizer retention ability, and the lawn may dry out and die. Also, it is extremely uneconomical because it requires repeated watering and fertilization throughout the year. In view of the above-mentioned shortcomings in the structure of conventional green bed soils, we have undertaken research into bed soils that have water and fertilizer retention properties as well as excellent drainage properties, and have arrived at the present invention. (Means for solving the problem) That is, the present invention uses sand, local soil, organic compost,
This green bed soil structure is characterized by being divided into two layers: an upper growth layer mixed with chemical fertilizer and a lower drainage layer made of sand alone or a mixture of sand and local soil. The configuration of the present invention will be explained in detail below. First, as with a normal green, we excavate a dark drainage ditch in the shape of a rib on the ground, lay a drain pipe in the ditch, and lay stone around it. Next, either lay only river sand with a thickness of 15 to 25 cm, or mix river sand with masa soil, which is local soil with a volume ratio of 20 to 30%, and have a clay content of about 20%. Forms a lower drainage layer of soil. On top of that, river sand, masa soil with a clay content of about 20%, humus (organic compost), iodine, silica, and chemical fertilizers are mixed and compacted to form the upper growth layer. An example of the proportion of the mixed material in the upper growth layer expressed in volume ratio is shown in the table below.

[Table] With the above mixing ratio, the clay content will be approximately 7% excluding humus. This upper growth layer has a thickness of 5 to 15 cm, and the thickness is determined as appropriate depending on the site, such as 15 cm in dry areas and 5 cm in shady and humid areas. (Effects of the Invention) As described above, the present invention is divided into two layers: an upper growth layer made of a mixture of sand, local soil, organic compost, and chemical fertilizer, and a lower drainage layer made of sand alone or a mixture of sand and local soil. Because it has a green bed soil structure, if you sow or paste grass on top of it, the upper growth layer has water and fertilizer retention properties, so the grass will grow vigorously, and the sand green will grow. It is economical because there is no need to constantly water or fertilize. In addition, even with tread pressure and running water, the clay content did not solidify and drainage was good, eliminating root rot and disease outbreaks in the lawn. In this way, the bed soil is divided into two layers: the upper growth layer and the lower drainage layer.
By dividing the soil into layers, it has water and fertilizer retention properties, as well as extremely good drainage, making it ideal for a green bed soil structure.

Claims (1)

[Claims] 1. A green bed soil structure characterized by being divided into two layers: an upper growth layer containing a mixture of sand, local soil, organic compost, and chemical fertilizer, and a lower drainage layer consisting of sand. 2. A green bed soil structure characterized by being divided into two layers: an upper growth layer made of a mixture of sand, local soil, organic compost, and chemical fertilizers, and a lower drainage layer made of a mixture of sand and local soil. 3. The green bed soil structure according to claims 1 and 2, wherein the upper growing layer has a thickness of 5 to 15 cm.