JPH09271278A - Rock wool cultivation bed - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rock wool cultivation bed for improving the moisture content of a rock wool cultivation bed upper part, lowering an air layer ratio, accelerating the rooting of roots, lowering the moisture content of a rock wool cultivation bed lower part, improving the air layer ratio, supplying sufficient oxygen to the roots, improving a water discharge property and hardly generating diseases. SOLUTION: This rock wool cultivation bed is composed of an upper layer whose thickness is 25-50mm and density is 50-120kg/m<3> and a lower layer whose thickness is 25-100mm and density is 20-80kg/m<3> .

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rock wool cultivation bed used for cultivating plants.

[0002]

2. Description of the Related Art Since conventional rock wool cultivation beds have the same overall density, the water content of water during cultivation is lower as it goes up and higher as it goes down. On the contrary, the stratum aerial ratio was higher as it went higher and lower as it went lower. For this reason, even if plant seedlings were planted on the rock wool cultivation floor, root moisture was suppressed because of low water content and high air layer ratio. When the roots of the plant extended to the lower part of the rockwool cultivation floor, the root ratio became oxygen deficient because the air layer ratio was low. In addition, since the water content is high, the movement of water is small and the drainage is poor, and diseases such as root rot are likely to occur.

[0003]

DISCLOSURE OF THE INVENTION The present invention solves the above problems by increasing the water content in the upper portion of rock wool cultivation floor, lowering the air layer ratio, promoting root rooting, and lowering the rock wool cultivation floor. It is an object of the present invention to provide a rockwool cultivation bed in which the water content is lowered, the air layer ratio is increased, sufficient oxygen is supplied to the roots, and the drainage is improved to prevent diseases from occurring.

[0004]

The object [Summary of] the thickness 25~50mm of the present invention, the density 50~120kg / m ³ of the upper layer and the thickness of 25 to 100 mm, rock wool consisting of lower density 20~80kg / m ³ Solved by the cultivation floor. The upper layer of the rock wool cultivation floor of the present invention has a thickness of 25 to 50 m.
m, the density of 50 to 120 kg / m ³ is because the thickness of the rock wool cultivation floor is usually 50 to 150 mm, in which case the thickness portion of 25 to 50 mm from the upper surface of the rock wool cultivation floor is easy to dry, And the density is 50 to 120k
This is because it was found as a result of research that the water retention capacity can be secured by setting g / m ³ . Moreover, the reason why the density of the lower layer of the rock wool cultivation floor is set to 20 to 80 kg / m ³ is that the drainage is good.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION The upper layer of the rockwool cultivation bed of the present invention having a thickness of 25 to 50 mm and a density of 50 to 120 kg / m ³ is determined by laminating and compressing a predetermined thickness by a known method at the time of producing rockwool. To be Also, thickness 25-1
The lower layer of 00 mm and the density of 20 to 80 kg / m ³ is similarly determined. The upper layer and the lower layer are separately made to have a predetermined thickness density and then laminated, and the binder applied in advance is cured by heating and compression to be integrated. In addition, as a method for producing a rockwool cultivation floor of the present invention, a rockwool laminate having a predetermined thickness is divided into two parts each having a predetermined thickness in the thickness direction, each of them is compressed to a predetermined density, and then laminated and heated and compressed. The binder applied in advance may be cured to be integrated. A thickness of 25 to 50 mm, a density of 50 to 120 kg / m ³ and a thickness of 25 to 100 m manufactured in this way
The rock wool cultivating bed having a lower layer of m and a density of 20 to 80 kg / m ³ can be used in the same manner as the conventional rock wool cultivating bed.

[0006]

【Example】

[Example 1] The upper layer has a thickness of 25 mm and a density of 80 kg /
m ^3, a thickness of 50mm the lower layer, a rock wool cultivation bed of the present invention which is set to a density ^50k g / m ³ was produced. The rock wool cultivation floor was made saturated with tap water and allowed to stand for 24 hours, and then the water content was measured. The water content of the upper layer was 61%, and the water content of the lower layer was 51%.

[Comparative Example 1] Thickness 75 mm, density 80 kg
The water content was measured in the same manner as in Example 1 except that a conventional rockwool cultivation bed having a single layer of / m ³ was used as Comparative Example 1.
The upper layer (25 mm from the top) had a water content of 40%, and the lower layer (50 mm from the bottom) had a water content of 90%.

[0008]

As is clear from the results of Example 1 and Comparative Example 1, the rock wool cultivation bed of the present invention has sufficient water content in the upper layer, while the water content in the lower layer is appropriately suppressed, so that the water movement is good. Since the moisture content is decreased and the split layer ratio is increased, oxygen is sufficiently supplied and the occurrence of diseases such as root rot can be prevented. Therefore, it is effective in promoting the development and development of strong roots.

Claims (1)

[Claims] 1. A thickness of 25 to 50 mm and a density of 50 to 120.
kg / m ³ upper layer, thickness 25-100 mm, density 20-
Rock wool cultivation floor consisting of a lower layer of 80 kg / m ³ .