JPH0438374B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for watering a sponge-like hydroponic seedbed.

Hydroponic cultivation does not use mud, but rather dissolves various fertilizers (liquid fertilizers) in water and uses these nutrients to grow plants. That is, when a plant roots in water, it can absorb nutrients dissolved in the water through its roots.

Therefore, in hydroponic cultivation, roots are spread directly into water, but in this case, hydroponic cultivation can also be performed in a sponge-like seedbed.

That is, a sponge-like seedling bed is laid inside a Styrofoam seedling box, and something like a trefoil is grown on the surface. The sponge-like seedbed has many open cells and retains water for a long time, making it suitable for hydroponic cultivation.

By the way, even if you just sprinkle water on the surface of a spongy seedbed, the air bubbles inside the seedbed contain air, so the water only wets the surface of the seedbed, but much of the water is repelled and it is difficult to water. Do not penetrate inside the seedbed.

Therefore, conventionally, a sponge-like seedbed was placed in a container such as a bucket and squeezed by hand to suck out water and keep it moist. Therefore, it took a very long time.

In addition, the large spongy seedbed cannot be squeezed evenly at once, so even if you squeeze the seedbed underwater, it is difficult to completely push out the air, and the disadvantage is that water cannot be supplied evenly. had.

Therefore, the present invention applies an air extrusion roll to one end of a spongy seedbed, moves the roll and the seedbed relatively, and sequentially pushes out the air in the bubbles of the seedbed, so that the seedbed is released from the pressure. This is an irrigation method for a sponge-like hydroponic seedbed that supplies water to the area to be restored and moistens the seedbed.

An embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 represents a sponge-like seedbed. The seedbed 1 has numerous open cells. The seedbed 1 is formed into a flat plate shape with a thickness of approximately 3 to 4 cm, and the entire seedbed 1 is provided with perforation-like cuts 2 at predetermined intervals vertically and horizontally. The cut 2 is for dividing the seedbed 1 into individual plants after growing the plants. The size of the seedbed 1 is made to match the internal volume of the seedling raising box 3 that accommodates the seedling bed 1, and FIG. 2 shows the state in which the seedling bed 1 is accommodated in the seedling growing box 3.

The seedling raising box 3 is formed at a depth such that the upper surface of the seedling bed 1 and the upper surface of its frame are approximately at the same height.
is made of a material that floats on water, such as Styrofoam.

Reference numeral 4 denotes an air extrusion roller that presses the seedbed 1 to extrude air, and the air extrusion roller 4 is formed into a cylindrical shape. An irrigation nozzle 5 is provided near a position where the seedbed 1 pressed by the air extrusion roller 4 expands as it attempts to return to its original shape due to elastic restoring force. Therefore, the irrigation nozzle 5 may provide irrigation immediately after the advance of the air extrusion roller 4 or from above the roller. 6 is the seeds of mitsuba and japonica to be sown in the nursery 1.

Irrigation to the seedbed 1 is performed while the seedbed 1 is accommodated in the seedling raising box 3. In this state, the seedling box 3 and the air extrusion roller 4 are moved relative to each other to press the seedbed 1 from one end to the other, and the pressed seedbed 1 tries to return to its original shape due to elastic restoring force and swells. Sometimes it is watered.

When the seedbed 1 is pressed by the air extrusion roller 4, the air bubbles located directly under the air extrusion roller 4 are compressed by the pressure, and the air inside the bubbles is released. Since the spongy seedbed has high elastic restoring force, the seedbed 1 is moved by the air extrusion roller 4.
Even if the seedbed 1 is pressed, if the seedbed 1 is left as it is, the spongy seedbed will swell to return to its original shape due to its elastic restoring force, and at this time the bubbles will suck air into the bubbles. Therefore, the seedling box 3 containing the seedbed 1 and the air extrusion roller 4 are moved relatively, and the pressed seedbed 1 is returned to its original shape by elastic restoring force by pressing the seedbed 1 from one end to the other. If you water the bubbles as they expand, the compressed bubbles will suck in the water around them instead of air.

In this way, the air in the spongy seedbed bubbles is forced out and water is drawn into the bubbles in its place. FIG. 3 shows this state.

Then, seeds such as Japanese mitsuba and japonica are sown in the irrigated seedbed 1. The sown seeds will germinate soon, so if the seedling raising boxes 3 are stacked and placed on top of each other, the seedling raising boxes 3 are formed at a depth such that the top surface of the seedling bed 1 and the top surface of the frame are at the same height. Therefore, the seeds will root toward the inside of the seedbed 1. After that, they are grown by feeding them with liquid fertilizer, etc., and they grow as shown in Fig. 4.

Since the seedling raising box 3 is made of styrofoam or the like and is made to float on water, it can be placed floating on the surface of the water in a plastic greenhouse equipped with an aquarium, or placed on a shelf provided inside the plastic greenhouse for the cultivation work. You can also.

After growing and when shipping, the seedbed 1 is made with cuts 2 of a desired depth at predetermined intervals in the vertical and horizontal directions from the height direction, so that the grown mitsuba and chinensis can be placed in the seedbed by dividing the seedbed 1. It can be sold in a fresh state with 1 still attached.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the sponge-like seedbed 1, FIG. 2 is a diagram of the seedbed 1 housed in the seedling box 3, FIG. 3 is a diagram of the nursery bed 1 being pressed by an air extrusion roller 4, Figure 4 shows the state of use of the nursery 1. Explanation of symbols: Seed bed...1, Cut...2, Seedling box...3, Air extrusion roller...4, Irrigation nozzle...5, Seed...6.

Claims (1)

[Claims] 1. Apply an air extrusion roll to one end of the sponge-like seedbed, move the roll and the seedbed relatively, and sequentially push out the air in the bubbles of the seedbed, and apply water to the place where the seedbed restores its original shape when the pressure is released. A method of irrigation for sponge-like hydroponic seedbeds that supplies water to moisten the seedbed.