JP4952986B2 - Seedling method - Google Patents

Description

  The present invention relates to a seedling raising method for making water retention after irrigation uniform in raising seedlings planted in a tray and making seedlings uniform.

  Conventional seedlings are sown and raised in boxes and pots, but from the viewpoint of planting density and single seeding, in recent years, seedlings have been sown in a cell tray in which a large number of pot parts are connected.

  The seedlings are required to have the same size and hardness as the seedlings, and the seedling quality is high in environment resistance and growth activity when transplanted.

  However, the current situation is accompanied by many variations. This variation can be caused either by the potential of the organism, or by environmental differences. Here, we focused on ensuring a uniform seedling environment as much as possible.

  In order to evenly irrigate, it is usually done by a method that relies on human skill, such as from the top of the plant by visual inspection, with many places that are dry and modest places that are wet. This method is labor intensive and involves individual differences.

  In addition, there are automatic bottom irrigation methods that can be used for water irrigation relatively easily and uniformly. There are two methods, one using waterlogging and one using capillary action. The fertilizer and medium flow out of the water, and the water level also affects the uniformity.

  When sucking up by the capillary force of the medium, it is controlled by the gap of the medium, that is, the structure, and it is difficult to make it uniform.

  In a simple bottom irrigation apparatus, even if irrigation is performed uniformly, the water retention varies in the subsequent drying process, and the seedlings A planted in the tray 1 are grown like a cocoon as shown in FIG. This is considered to be caused by the environmental difference between light and moisture at the central portion and the peripheral portion of the cell tray.

  In general, water management is performed by repeating irrigation and drying, and this is important for forming a root system. However, the drying process is particularly important for seedlings that are supposed to be transplanted in the field.

  In order to make the irrigation uniform, it is necessary to understand the water absorption of the medium, and it is known that the irrigation can be achieved by irrigating with full water. Further, in order to make the drying uniform, it is necessary to understand the water retention of the medium, and it is conceivable to devise the structure of the medium and the drying environment.

  Furthermore, it is necessary to consider that the culture medium is compacted and the culture medium structure is changed as the number of irrigations is increased. Here, from the viewpoint of uniform water retention, attention was paid to the water content at the time of water absorption and the dry environment.

  Accordingly, the problem of the present invention is that the simple bottom irrigation device is easy to dry around even if it is evenly irrigated. It is in providing the seedling raising method which can aim at the uniformization of seedling raising.

In order to solve the problems as described above, the present invention is a seedling raising method in which a tray in which seedlings are planted is arranged in a three-dimensional shape with a raised central portion, and irrigation of the seedlings is performed by bottom irrigation . The shape is such that the central part is three-dimensionally elevated during drying, and the bottom surface is irrigated horizontally during irrigation.

  In addition, the tray can be arranged in a shape in which the central portion is raised by placing the tray on a water-permeable support base having a three-dimensionally raised central portion.

  Here, for example, a cell tray in which a large number of pot portions are connected is used as the tray. If the tray is soft, a shape in which the central portion is three-dimensionally increased can be obtained by simply placing the tray on the permeable support base. In addition, when the tray has high rigidity, it is necessary to separate the pots for each row and similarly to be placed on the water permeable support base, so that the trays separated in a row can be returned two-dimensionally. It can be connected using a detachable connecting jig such as a clip, a hook-and-loop fastener, or a magnet, and the three-dimensional shape with a raised central part during drying and the two-dimensional shape during irrigation can be freely changed.

  Also, if a tray with a balance between buoyancy and gravity is used, the periphery rises during bottom irrigation, so that the periphery becomes the same height as the center, i.e. horizontal, and when irrigation ends and the water level drops, the center It also gets higher.

  The water permeable support base is formed by using a metal wire, a rectangular base frame having a planar size corresponding to the tray, and a support bar such as a chevron provided between diagonal positions of the base frame. Becomes a three-dimensional shape in which the central portion is raised by being placed on the support bar.

According to the present invention, in the seedling raising method in which the tray in which the seedlings are planted is arranged in a shape in which the central portion is three-dimensionally raised and the seedling is irrigated by bottom irrigation , the tray has a three-dimensional central portion when dried. Since the shape is raised and the bottom irrigation is performed horizontally during irrigation, even when the tray is returned to a two-dimensional shape and irrigation is performed by bottom irrigation, the central part is raised during drying. Since the drying of the central part increases, the surroundings and the central part have the same moisture content, and the raising of the seedlings can be made uniform.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  As shown in the figure, the seedling raising method of the present invention uses the tray 1 in which a large number of pot parts 2 are connected, and when raising seedlings A planted in the medium B in each pot part 2, the irrigation is performed by bottom irrigation. The tray 1 is three-dimensionally raised at the time of drying, and the drying of the center increases so that the surroundings and the center have the same level of moisture, and the seedlings are made uniform. Yes.

  As shown in FIGS. 1 and 5A, the tray 1 has a structure in which a large number of pot portions 2 are vertically and horizontally connected. For example, a cell tray can be used. As shown in FIG. 1, the water-permeable support base 3 that is placed in order to make the central part higher in shape uses a metal wire, and has a rectangular base frame 4 having a planar size corresponding to the tray 1, The tray 1 is formed by support bars 5 such as chevron provided between the diagonal positions of the base frame 4, and the tray 1 is placed on the support bars 5 to have a three-dimensional shape with a raised central portion.

  The tray 1 does not need to be special, and an existing tray can be used as it is. If the tray 1 has flexibility, it can be simply placed on the water permeable support 3. The three-dimensional shape becomes higher at the center.

  The shape of the tray 1 having a three-dimensionally raised central portion is not limited to the curved bowl shape shown in FIGS. 1 and 2, but is linear as shown in FIGS. 5 (b) to 5 (d). A mountain shape, a trapezoidal shape, a partial trapezoidal shape, or the like can be adopted, and the inclination and curvature when the central portion is raised may be set in accordance with the characteristics of the medium.

  When the tray 1 is rigid, it is difficult to bend the entire tray three-dimensionally. In the case of such a tray 1, it separates for every row of the pot part 2, and it gives flexibility by making it the isolation | separation tray 1a of a strip | belt-shaped elongate thing, so that this may be put on the water-permeable support stand 3, and arranged If it does, it can be set as the three-dimensional shape where a center part becomes high.

  Further, as shown in FIGS. 3 (a) and 3 (b), a clip 7 provided with slits 6 at intervals between the pot portions 2 as shown in FIGS. 3 (a) and 3 (b) so that the row of separation trays 1a can be returned two-dimensionally. Using a removable connecting jig such as a hook-and-loop fastener or a magnet, it is only necessary to connect the separation trays 1a for each row, and a three-dimensional shape with a raised central part during drying and a two-dimensional shape during irrigation. Change is free.

  Furthermore, as shown in FIG. 4, the end portions of one row of separation trays 1a may be sequentially connected by a hinge 8 so that a change between a parallel state and a straight state can be made by coupling with clips, and the entire tray is long. If it forms in one line, when a graft, cuttings, etc. are supplied to the culture medium B of each pot part 2 one by one, convenience will become high.

  FIG. 6 shows another example of the water permeable support base 3, which has a wire mesh structure with a large mesh, bends both sides downward and is self-supporting, and has a quadrangular pyramid shape so that the center of the mesh surface of the upper surface is raised The tray placed thereon can be formed into a three-dimensional shape with a raised central portion.

  In the seedling raising method according to the present invention, the tray 1 in which the seedling A is planted in the medium B in each pot portion 2 is placed on the water permeable support 3, and the tray 1 is formed into a three-dimensional shape with a higher central portion. Raise seedlings.

  When irrigation is performed by bottom surface irrigation with the central portion of the tray 1 raised, the central portion has less irrigation from the bottom surface compared to the peripheral portion, and the drying of the central portion increases during drying. The medium B in the pot part 2 in the peripheral part and the medium B in the pot part 2 in the central part have the same level of moisture, and the water in the medium B is averaged over the entire tray 1, thereby uniforming the growth of the seedling A. .

  During irrigation, the tray 1 is lowered from the water permeable support 3 and returned to a horizontal two-dimensional form to perform uniform bottom irrigation for the medium B in all pot portions 2. Even if drying is performed in a three-dimensional shape, drying in the central part increases, so that the medium B in the pot part 2 in the peripheral part and the medium B in the pot part 2 in the central part have the same level of moisture. Thus, the water in the medium B is averaged over the entire tray 1, and thereby the growth of the seedling A is made uniform.

  In addition, if a tray 1 with a balance between buoyancy and gravity is used, when the bottom part is irrigated, the periphery rises and the circumference becomes the same height as the center part, that is, the level becomes horizontal. Since the peripheral part descends and the central part becomes high again, the growth of the seedling A is made uniform by averaging the same moisture as described above.

  The seedling method proposed here is not limited to the cell tray, but can also be used for pot seedling as well as top surface irrigation.

Exploded perspective view of tray and water permeable support used in the method of the present invention (A) is a longitudinal sectional view along the length direction of a tray placed on a water permeable support, (b) is a longitudinal sectional view in the same width direction. (A) is an exploded perspective view of a row of separation trays and a clip that couples this, and (b) is a perspective view of a state in which a row of separation trays are coupled by a clip. Top view of a state where a row of separation trays are connected by a hinge (A) is a longitudinal sectional view showing a tray in a horizontal state, (b) to (d) are longitudinal sectional views showing different shapes of a tray with a raised central portion. The perspective view which shows the other example of the water-permeable support stand used for the method of this invention Front view showing a state in which seedlings are grown in a bowl shape in growing seedlings using a conventional tray

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tray 2 Pot part 3 Permeability support stand 4 Base frame 5 Support bar 6 Slit 7 Clip 8 Hinge

Claims (2)

In the seedling raising method in which the tray into which the seedlings are planted is arranged in a shape in which the central part is three-dimensionally raised, and the seedling is watered by bottom watering .
A method for raising seedlings , characterized in that the tray has a shape with a three-dimensionally raised central portion when dried, and is horizontally irrigated when watering . The seedling raising method according to claim 1, wherein the tray is placed in a shape having a raised central portion by placing the tray on a water-permeable support base having a three-dimensionally raised central portion .

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