JP2003169555A - System for growing seedling of reed, method for growing seedling by using the system, and method for transplanting reed - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a large amount of transplantable seedlings of reed in a short period. <P>SOLUTION: This system 1 for growing the seedlings of the reed is substantially constituted of a nursery bed 2, a water supply 3 for supplying water to the nursery bed 2, and a water-storing pond 4 for germination and rooting. The nursery bed 2 is constituted by laying a material 16 for a nursery bed on the bottom part, and flooding the nursery bed 2. A palm mat 41 which is a biodegradable nursery mat is put on the upper surface of a nursery bed material 16 so that stems 15 of the reed may horizontally be arranged on the palm mat 41. The water supply 3 is constituted of an open-type water-storing vessel 6 for storing the water introduced from a river (not shown in the figure) as a water source, and a water-supplying pipe 5 communicating the interior of the open type water-storing vessel 6 with the interior of the nursery bed 2. The water supplied from the water supply 3 is allowed to flow in the nursery bed 2 and the water-storing pond for the germination and the rooting. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reed breeding system for growing reed seedlings mainly for transplanting to wetlands such as tidal flats, a reed raising method using the reed breeding system, and a reed transplanting method.

[0002]

2. Description of the Related Art In order to preserve and restore the natural environment, by creating wetlands such as tidal flats on the waterfront, it is possible to create a growth environment for aquatic plants, wild birds, and seafood, and to provide a good waterside landscape. Is expected.

In order to create a good natural environment in the wetlands, it is effective to transplant aquatic plants into the constructed wetlands. In such a case, it is desirable to collect a plant from a community of aquatic plants growing in the surrounding area and transplant it to a constructed wetland, and a reed is often used as such a plant.

Reed is a perennial grass of the family Gramineae that grows in swamps. From around April every year, buds germinate from the rhizome to grow leaves,
From August to October, ears are produced and fruit is produced. After that, the aerial part withers in winter and stores nutrients in the rhizome for growth in the next year.

In transplanting reeds, it is considered based on such a cycle, and conventionally, seeds are collected and sown in October to November, or the seeds are bred and planted.
Excavate and plant rhizomes from November to March, April to April
It has been carried out by digging a large plant along with the rhizome in the month and planting it, cutting the above-ground stem from the root in April to May, and soaking the trimmed stem.

In the dipping method, the stems of the reeds are cut from May to August, soaked in water to cause germination of roots from the stem nodes, and then the germinated roots are cut short and replanted in pots or the like. , A method of raising seedlings for more than half a year in such a state, and then transplanting the raised seedlings.

[0007]

However, in the method using seeds, the germination rate varies depending on the conditions such as soil and climate, and it takes two years or more for raising seedlings. In the method of planting, it takes a lot of labor when collecting from the underground, and since it disturbs the sampling place where the reed grows naturally, there is a problem that the environment for growing the reed is significantly impaired.

In addition, it is said that it is desirable to use reeds that grow on land from April to May in the method of planting stems, but the appropriate period is limited and the reed community is
In general, since it often exists in wetlands, the problem was that it was difficult to use reeds on land.

Further, the dipping method requires a relatively small amount of labor for collection, but it not only involves the work of replanting in a pot, but also has a problem that it takes half a year to one year for raising seedlings.

Although it is possible to use commercially available seedlings, there has been a problem in that it is difficult to procure them in a large amount in terms of cost.

The present invention has been made in consideration of the above circumstances, and is a reed raising system capable of securing a large amount of transplantable reed seedlings in a short period of time, a raising method using the reed, and a reed raising method. The purpose is to provide a porting method.

[0012]

In order to achieve the above object, the reed raising system according to the present invention has a predetermined nursery material laid and watered as described in claim 1. And a water supply facility for supplying water to the nursery, and a biodegradable nursery mat arranged on the upper surface of the nursery material so that the water level in the nursery is higher than the top of the nursery mat. In addition, at least one of the nursery bed and the water supply facility is configured such that the water in the nursery bed flows with the water supplied from the water supply facility.

Further, in the reed raising system of the present invention according to the present invention, the seedling raising mat has a three-dimensional void structure.

Further, in the reed raising system according to the present invention, the water supply facility comprises an open type water storage tank for storing water introduced from a water source such as a river or lake, and the open type water storage tank and the nursery bed. And a water supply pipe that communicates with each other, and when the water level in the nursery exceeds the overflow water level set in the nursery, the water in the nursery is drained to the outside of the nursery as overflow water. The nursery bed is configured as described above.

Further, the reed raising system according to the present invention is such that the overflow water is circulated in the open water tank.

In the reed raising system of the present invention according to the present invention, a plurality of the nursery beds are arranged in series, and adjacent to each other among the nursery beds, the adjacent nursery beds are communicated with each other by a communicating pipe, and the inside of the communicating pipe is filled with the overflow water. Is allowed to flow from the upstream nursery to the downstream nursery, and the water supply pipe is connected to the most upstream nursery among the nurseries.

The reed nursery system according to the present invention uses the dredged mud or a dehydrated cake produced by dehydrating the dredged mud as the nursery material.

The reed seedling raising system according to the present invention has a reservoir for germination and rooting in which water is stored and a stem of reed can be floated and left in the vicinity of the surface of the water.

The method for raising reeds of the present invention according to the present invention is the method for raising reeds of reeds, wherein the reeds are sown in a nursery in which a predetermined nursery material is laid and water is filled. A biodegradable seedling mat is placed on the upper surface of the nursery material so that the stems of the reeds are horizontally arranged on the nursery mat, and the water level in the nursery bed in such a state The reeds are raised from the stems of the reeds while running water in the nursery so that the reeds are higher than the top of the reeds.

Further, in the method for raising seedlings of reed according to the present invention, the seedling raising mat has a three-dimensional void structure.

The reed raising method according to the present invention uses the dredged mud or a dehydrated cake produced by dewatering the dredged mud as the seed bed material.

Further, in the method for raising seedlings of reeds according to the present invention, before placing the seedling raising mat on the upper surface of the nursery material so that the stems of the reeds are arranged horizontally on the seedling raising mat, The stem of the reed is floated and allowed to stand in the vicinity of the surface of the water of the germination rooting reservoir in which water is stored, and the germination root is rooted from the stem of the reed.

Further, the method for transplanting reeds according to the present invention comprises, as described in claim 12, dredging the bottom mud of the water area where the reeds are growing on the waterside and dehydrating the dredged mud soil. A dehydrated cake is produced, and the dehydrated cake is laid as a nursery material and is filled with water. A nursery bed is provided near the water area, and a biodegradable nursery mat is placed horizontally on the nursery mat. It is arranged on the upper surface of the nursery material so as to be in a state of being kept in such a state that the water level in the nursery bed is higher than the top of the nursery mat in such a state while running water in the nursery bed. Reeds are raised from the stems, and then the seedling-raising mat on which the reeds are placed is laid in a wetland such as a tidal flat formed near the water area.

Further, according to the method for transplanting reeds according to the present invention, as described in claim 13, the bottom mud in the water area where reeds grow on the waterside is dredged, and the dredged mud soil laid as seedbed material. A nursery bed that is filled with water is provided near the water area, and a biodegradable nursery mat is placed on the upper surface of the nursery material so that the stems of reeds are horizontally placed on the nursery mat. In the state, water level in the nursery in such a state to raise the seedlings from the stem of the reed while flowing water in the nursery so that the water level is higher than the top of the nursery mat,
Next, the seedling raising mat on which the reed seedlings are placed is laid in a wetland such as a tidal flat formed near the water body.

Further, in the method for transplanting reeds according to the present invention, the seedling raising mat has a three-dimensional void structure.

In the nursery system for reeds according to the present invention, a nursery bed in which a predetermined nursery material is laid and filled with water, a water supply facility for supplying water to the nursery bed, and an upper surface of the nursery material are provided. And a biodegradable seedling mat, which is placed on the upper surface of the nursery material so that when raising seedlings of the reed, the stems of the reed are placed horizontally on the seedling mat. Then, seedlings are raised while water is supplied to the nursery with a water supply facility.

In this way, the stem of the reed arranged on the seedling raising mat germinates and roots from the node and grows as a seedling by extending the root from the seedling raising mat to the seedbed material. Since at least one of the nursery bed and water supply equipment is configured so that the water in the nursery bed flows with the supplied water, the reed grows faster than when the conventional nursery method is used, and the nursery starts to grow. It takes about 1 to 2 months to be ready for transplantation. This seems to be because sufficient oxygen is supplied to the nursery bed by running the water in the nursery bed.

Further, since the nursery mat is arranged on the upper surface of the nursery material, when the reed seedlings are transplanted, the nursery mats on which the reed nursery is placed are not dug out from the nursery bed. It suffices to take them out of the nursery, transport them, and lay them as they are in a wetland such as a tidal flat, and as a result, there is no need to dig up the wetlands for planting seedlings, improving workability during transplantation.

After the transplantation, since the upper surface of the wetland is covered with the seedling raising mat, the sand is washed out by waves and the like.
So to speak, erosion of wetlands is suppressed. Since the seedling raising mat is made of a biodegradable material, it will be decomposed with the passage of time after transplantation and integrated with the soil.

The seedling-growing mat may be made of any material as long as it is biodegradable, that is, can be decomposed by microorganisms in the soil. For example, plant fiber or biodegradable plastic can be used.

The seedling-growing mat is water-permeable so that the reeds can be raised, and if the reeds have no problem in extending the roots or transporting the seedlings,
What kind of structure or shape is arbitrary, but here, when the nursery mat is configured to have a three-dimensional void structure, the nursery mat is lightened by the voids, and workability is improved, When transplanted to a wetland, the soil of the wetland will enter the voids formed in the seedling raising mat,
The nursery mat and the soil are integrated, and the above-mentioned erosion of the wetlands is further suppressed.

The water supply facility may be constructed arbitrarily as long as it can supply water to the nursery. In addition, how the water in the nursery is made to flow is also optional, and the nursery may be constructed by making use of the steps or slopes of the terrain to allow the water to flow naturally. A pump may be used to force water to flow.

For example, the water supply equipment is composed of an open type water storage tank for storing water introduced from a water source such as a river or a lake, and a water supply pipe for communicating the inside of the open type water storage tank with the inside of the nursery. It is conceivable to configure the nursery so that when the water level in the nursery exceeds the overflow water level set in the nursery, the water in the nursery is discharged as overflow water to the outside of the nursery. .

In this way, when the water introduced from the water source is stored in the open water tank, a large amount of oxygen dissolves in the water. And, since the water containing a large amount of oxygen flows into the nursery bed through the water supply pipe and flows in the nursery bed, oxygen necessary for raising the reeds is sufficiently supplied to the nursery bed. .

Further, the water exceeding the predetermined overflow water level is drained to the outside of the nursery, so that the water in the nursery can be surely flowed, and the water level of the nursery is suitable for raising seedlings of reeds. It is possible to keep

The open-type water tank is designed so that oxygen can be dissolved in the water when the water flows in or when the water is stored.
If the inflowing water is in contact with the atmosphere or is in communication with the atmosphere, the configuration is arbitrary, but considering the water supply to the nursery, it is recommended to install it at a position higher than the nursery. desirable. In this case, the water in the nursery naturally flows due to the head difference between the open water tank and the nursery.

The water supply pipe may be constructed in any manner as long as it connects the inside of the open water storage tank with the inside of the nursery, but a flow control valve is provided so that the amount of water supplied to the nursery can be adjusted. It is desirable to have it.

The overflow water may be drained as it is to a river, a lake, a drainage ditch, etc. Alternatively, the overflow water may be circulated through an open water tank. Conceivable.

Although the number of seedbeds to be installed is arbitrary, when a plurality of seedbeds are provided, the seedbeds are arranged in series and the adjacent seedbeds are connected to each other by a communication pipe. The overflow water may flow from the upstream seedbed to the downstream seedbed in the communication pipe, and the water supply pipe may be connected to the most upstream seedbed among the seedbeds. .

By doing so, it becomes possible to efficiently run the water in the plurality of nursery beds.

Any seed bed material may be used as long as it can grow reeds into seedlings. For example, ordinary sand or soil, or soil mixed with fertilizer may be used. However, the dredged mud or a dehydrated cake produced by dehydrating the dredged mud may be used as the seed bed material.

In such a case, since the dredged mud and the dehydrated cake produced by dehydrating the dredged mud contain a large amount of nutrient salts, the environment becomes more suitable for the growth of reeds, thus promoting the growth of reeds. The seedling raising period is shortened. Dehydrated cakes are usually used as embankment materials with the addition of solidifying materials, but dehydrated cakes and dredged mud without solidifying materials are effectively used without discarding them. It becomes possible.

In addition, when water is stored and a germination root reservoir is provided near the surface of the water in which the stems of the reed can be floated and left standing, first, the stems of the reed are floated on the germination root reservoir. The roots of the reeds are germinated, and then the stems of the reeds are cut into short pieces as needed so that the germinated roots are included, and the reeds are placed on a nursery mat for raising seedlings. Therefore, only the germinated rooted stems of reeds can be selected and placed on the nursery mat, so that the nursery can be used efficiently and the efficiency of raising the reeds can be improved.

When the reed stalks are left floating and germinated for rooting, it is desirable that a plurality of reed stalks are loosely bundled and floated on water so that the reed stalks do not sink into the water.

The germination root reservoir may be constructed in any manner as long as water can be stored and the stems of the reed can be floated and allowed to stand. However, as in the case of the nursery, the germination root reservoir is filled with water. A water supply system for supplying water may be provided, and the water supplied from the water supply system may be configured to cause the water in the germination rooting reservoir to flow.

In the reed raising method according to the present invention, first, a biodegradable nursery mat is placed on the upper surface of the nursery material so that the stems of the reed are horizontally arranged on the nursery mat. Set up.

Next, in such a state, water is flowed in the nursery bed so that the water level in the nursery bed is higher than the top of the nursery mat, and the reeds are raised from the stems of the reeds.

In this way, the stems of the reeds arranged horizontally on the nursery mat germinate and root from the knot, and the roots grow from the nursery mat to the nursery material to grow as seedlings. Since the reeds are raised while water is supplied under running water, the reeds grow faster than when the conventional raising method is used, and the plants can be transplanted within 1 to 2 months after the start of raising the seeds. This seems to be because sufficient oxygen is supplied to the nursery bed by running the water in the nursery bed.

Since the nursery mat is arranged on the upper surface of the nursery material, when the reed seedlings are transplanted, the nursery mats on which the reed nursery is placed are not dug out from the nursery bed. It suffices to take them out of the nursery, transport them, and lay them as they are in a wetland such as a tidal flat, and as a result, there is no need to dig up the wetlands for planting seedlings, improving workability during transplantation.

After the transplantation, since the upper surface of the wetland is covered with the seedling raising mat, the sand is washed out due to waves and the like.
So to speak, erosion of wetlands is suppressed. Since the seedling raising mat is made of a biodegradable material, it will be decomposed with the passage of time after transplantation and integrated with the soil.

When arranging the stems of the reeds on the seedling-growing mat, it may be arranged before or after the seedling-growing mat is arranged on the upper surface of the seedbed material. For example, in the former case, the both ends of the stems of the reeds may be inserted into the seedling-growing mats a little and the stems of the reeds may be temporarily fixed to the seedling-growing mats before the seedling-growing mats are arranged.

The seedling-growing mat may be made of any material as long as it can be biodegraded, that is, decomposed by microorganisms in the soil. For example, plant fiber or biodegradable plastic can be used.

Further, the seedling raising mat has water permeability so that the reeds can be raised, and if the reeds have no problem in extending the roots or transporting the seedlings,
What kind of structure or shape is arbitrary, but here, when the nursery mat is configured to have a three-dimensional void structure, the nursery mat is lightened by the voids, and workability is improved, When transplanted to a wetland, the soil of the wetland will enter the voids formed in the seedling raising mat,
The nursery mat and the soil are integrated, and the above-mentioned erosion of the wetlands is further suppressed.

Any seed bed material may be used as long as it can grow reeds into seedlings. For example, ordinary sand or soil, or soil mixed with fertilizer may be used. However, the dredged mud or a dehydrated cake produced by dehydrating the dredged mud may be used as a seed bed material.

In such a case, since the dredged mud and the dehydrated cake produced by dehydrating the dredged mud contain a large amount of nutrient salts, an environment suitable for the growth of reeds is obtained, thus promoting the growth of reeds. The seedling raising period is shortened. Further, the dehydrated cake is usually used as an embankment material by adding a solidifying material, but for the dehydrated cake without the solidifying material or the dredged mud not subjected to the dehydration treatment, these are not discarded, It becomes possible to use it effectively.

Before placing the seedling-growing mat on the upper surface of the seedbed material so that the stems of the reeds are placed horizontally on the seedling-growing mat, the water in the germination-rooting reservoir in which water is stored is placed. The stem of the reed may be floated and left in the vicinity of the surface of, and germinated and rooted from the stem of the reed.

In such a case, first, the stems of the reeds are floated in the reservoir for germination roots for germination, and then the stems of the reeds are cut into short pieces as necessary so that the germinated roots are included. , Place the stems of such reeds on a nursery mat to raise seeds. Therefore, only the germinated rooted stems of reeds can be selected and placed on the nursery mat, so that the nursery can be used efficiently and the efficiency of raising the reeds can be improved.

When the reed stalks are left floating and germinated for rooting, it is desirable that a plurality of reed stalks are loosely bundled and floated on water so that the reed stalks do not sink into the water.

The germination rooting reservoir may be constructed in any manner as long as water can be stored and the stems of the reed can be floated and allowed to stand. However, as in the case of the nursery, the germination rooting reservoir is filled with water. A water supply system for supplying water may be provided, and the water supplied from the water supply system may be configured to cause the water in the germination rooting reservoir to flow.

In the method for transplanting reeds according to the present invention, first, the bottom mud in the water area where reeds grow on the waterside is dredged, and then the dredged mud that has been dredged is dehydrated to produce a dehydrated cake. To do.

Next, a seedbed in which the dehydrated cake is laid as a seedbed material and filled with water is provided near the water area.

Next, a biodegradable nursery mat is placed on the upper surface of the nursery material so that the stems of the reeds are placed horizontally on the nursery mat.

Next, in such a state, water is flowed in the nursery so that the water level in the nursery is higher than the top of the nursery mat, and the reeds are raised from the stems of the reeds. The seedling raising mat thus prepared is laid in a wetland such as a tidal flat formed near the water area.

In addition, in the method for transplanting reeds according to the present invention, first, the bottom mud in the water area where reeds are growing is dredged, and then the dredged mud that has been dredged is laid as a nursery material and A nursery bed is set up near the water area.

Next, a biodegradable seedling raising mat is placed on the upper surface of the seedbed material so that the stems of the reeds are placed horizontally on the seedling raising mat.

Next, in such a state, water is flowed in the nursery so that the water level in the nursery is higher than the top of the nursery mat, and the reeds are raised from the stems of the reeds. The seedling raising mat thus prepared is laid in a wetland such as a tidal flat formed near the water area.

In this way, in any of the transplanting methods, the stems of the reed arranged horizontally on the seedling raising mat germinate and root from the node, and the roots are extended from the seedling raising mat to the nursery material to grow as seedlings. However, here, because the reeds are raised while water is supplied to the nursery, the reeds grow faster than when the conventional raising method is used, and the reeds can be transplanted within 1 to 2 months after the start of raising the seeds. It becomes a state. This seems to be because sufficient oxygen is supplied to the nursery bed by running the water in the nursery bed.

Further, since the seedling raising mat is arranged on the upper surface of the seedbed material, when transplanting the reed seedlings, the seedling mats on which the reed seedlings are placed are not dug out from the seedbed. It suffices to take them out of the nursery, transport them, and lay them as they are in a wetland such as a tidal flat, and as a result, there is no need to dig up the wetlands for planting seedlings, improving workability during transplantation.

After the transplantation, since the upper surface of the wetland is covered with the seedling raising mat, the sand is washed out due to waves and the like.
So to speak, erosion of wetlands is suppressed. Since the seedling raising mat is made of a biodegradable material, it will be decomposed with the passage of time after transplantation and integrated with the soil.

Since the dehydrated cake and dredged mud used as seedbed materials contain a large amount of nutrient salts, the environment is more suitable for the growth of reeds, thus promoting the growth of reeds and further shortening the seedling raising period. . It should be noted that when a dehydrated cake is produced, it is not necessary to purposely add a solidifying material to ensure a predetermined strength, and in the first place, it is not necessary to perform a dehydration treatment to produce a dehydrated cake.

In addition, in the vicinity of the water area where dredging of the bottom mud is carried out, all operations such as procuring nursery materials, installing nursery beds, raising reeds, and transplanting reeds can be performed, so natural restoration using reeds is possible. In addition to improving work efficiency, the dehydrated cake, especially the dehydrated cake to which the solidifying material is not added and the dredged mud are used effectively on the spot without being moved to another place for use or disposal. Therefore, not only is the transplanting method excellent in economic efficiency, but the cost of the dredging work can be reduced by omitting the solidification treatment and the dehydration treatment.

Further, since all the steps can be performed in the water area where the reeds were originally grown on the waterside, there is no concern of changing the reed's growth environment, and a large amount of seedlings and transplants of the reeds are carried out in a short time. Is possible.

When arranging the stems of the reeds on the seedling-growing mat, it does not matter whether the seedling-growing mat is placed on the upper surface of the nursery material or after the seedling mat is placed, as described above. For example, in the former case, the both ends of the stems of the reeds may be inserted into the seedling-growing mats a little and the stems of the reeds may be temporarily fixed to the seedling-growing mats before the seedling-growing mats are arranged.

The seedling-growing mat may be made of any material as long as it is biodegradable, that is, can be decomposed by microorganisms in the soil. For example, plant fiber or biodegradable plastic can be used.

Further, the seedling raising mat is water-permeable so that reeds can be raised, and if the reeds have no problem in extending roots or transporting seedlings,
What kind of structure or shape is arbitrary, but here, when the nursery mat is configured to have a three-dimensional void structure, the nursery mat is lightened by the voids, and workability is improved, When transplanted to a wetland, the soil of the wetland will enter the voids formed in the seedling raising mat,
The nursery mat and the soil are integrated, and the above-mentioned erosion of the wetlands is further suppressed.

The stem of the reed according to the present invention may be of any length as long as it contains knots, and is placed on a seedling-growing mat in consideration of the ease of raising seedlings and the degree of growth. Alternatively, after germination and rooting, it can be appropriately cut into a desired length if necessary.

The water level in the nursery is also taken into consideration so that germination will not be adversely affected by the fact that the water level in the nursery is too low and the stems of the reeds are too dry, or the stems of the reeds are too submerged and are submerged. Then, the water level may be appropriately set so as to be higher than the top of the seedling raising mat, and for example, it may be several cm.

[0078]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a reed seedling raising system, a seedling raising method using the same, and a reed transplanting method according to the present invention will be described below with reference to the accompanying drawings.
It should be noted that parts and the like which are substantially the same as those of the conventional technique are designated by the same reference numerals and the description thereof will be omitted.

(First Embodiment)

FIG. 1 is a diagram showing a reed raising system according to the present embodiment. (A) is a plan view and (b) is a sectional view taken along line AA of (a). As shown in FIG. 1, the reed raising system 1 for reeds according to the present embodiment includes a germination and rooting reservoir 4;
The nursery 2 and a water supply facility 3 for supplying water to the germination and rooting reservoir and the nursery are generally constituted.

As can be seen from the detailed view of FIG. 2, the germination rooting reservoir 4 is constructed so that water 17 is stored and the stems 21 of the reed can be floated and left in the vicinity of the surface of the water. The germination and rooting reservoir 4 has a pit formed by excavating the ground 11 in a rectangular shape, and an earth retaining sheet pile 14 is fixed to the support pile 13 at the inner side of the pit, and the waterproof sheet 12 is provided. With a waterproof sheet 12
The pit is covered with water and is filled with water 17.

As is clear from the detailed view of FIG. 3, the nursery bed 2 is excavated into a pit by rectangularly excavating the ground 11 in the same manner as the germination root reservoir 4, and an earth retaining sheet pile is formed on the inner side of the pit. 14 is fixed to the support pile 13 and the waterproof sheet 12 is laid in the pit, but unlike the germination rooting reservoir 4, the bottom of the pit in which the waterproof sheet 12 is laid is different. A seedbed material 16 is laid in the pit, and water 17 is sprinkled in the pit.

The seedbed material 16 may be appropriately selected from ordinary sand or soil, soil mixed with fertilizer, or the like so that the reeds can grow into seedlings.

Here, a palm mat 41, which is a biodegradable nursery mat, is arranged on the upper surface of the nursery material 16 so that the reed stems 15 are horizontally arranged on the palm mat. It can be installed.

The palm mat 41 is obtained by loosening a palm into a fibrous shape and hardening it with a predetermined binder into a rectangular shape so as to have a thickness of, for example, 10 to 30 mm. Is formed as a three-dimensional void structure. That is, the palm mat 41 has water permeability that is indispensable for raising seedlings of reeds, and is biodegradable, that is, degradable by microorganisms in the soil. The palm mat 41
The size and the number thereof are arbitrary as long as they do not interfere with the arrangement on the upper surface of the nursery material 16 or the transportation of the seedlings.

On the palm mat 41, the reed stalks 15 which are germinated and rooted as described above are arranged.
In setting the water level (depth) in the nursery, the stalk 15 of the reed is too low or too dry, and the stalk 15 of the reed is too high.
Care should be taken that the seedlings are not submerged and the seedlings are not adversely affected, and that the water flow in the nursery 2 is not disturbed. For example, it is conceivable that the water level in the nursery 2 is higher than the top of the palm mat 41, and the depth of the reed stalk 15 is submerged, specifically, several cm.

The water supply facility 3 includes an open-type water tank 6 for storing water introduced from a river (not shown) as a water source, the open-type water tank, the germination-rooting reservoir 4 and the seedbed 2. And a water supply pipe 5 that communicates with each other, and the water supplied from the water supply equipment 3 flows in the germination and rooting reservoir 4 and the nursery 2.

The open-type water storage tank 6 is constructed by opening the upper surface so that the inflowing water is in contact with the atmosphere so that oxygen can be dissolved in the water when the water flows in or is stored. is there. As can be seen clearly in FIG. 1 (b), such an open type water storage tank 6 is installed at a position higher than the nursery bed 2 and the germination root reservoir 4, and the head difference from the nursery bed 2 and the germination root reservoir 4 is set. Nursery 2 by (water pressure due to height)
In addition, water is smoothly supplied to the germination rooting reservoir 4, and as a result, the water in the nursery 2 and the germination rooting reservoir 4 flows naturally.

Here, the two nursery beds 2 are arranged in series, and the two nursery beds 2, 2 adjacent to each other are communicated with each other by a communication pipe 7, and the inside of the communication pipe is provided with an upstream nursery bed 2 (in FIG. 1). Water is configured to flow from the right side) to the downstream nursery 2 (left side in FIG. 1).
The water supply pipe 5 is connected to the seedbed located on the upstream side, and the drainage pipe 8 is connected to the seedbed located on the downstream side. The water supplied from the water supply equipment 3 is connected to the water supply pipe 5, the seedbed 2, and the communication. The pipe 7 and the nursery 2 flow in this order, and are drained to a river, a lake, a drainage ditch, etc. via a drain pipe 8.

The same applies to the germination rooting reservoir 4, in which the water supplied from the water supply facility 3 is connected by connecting the water supply pipe 5 to the upstream side thereof and the drainage pipe 8 to the downstream side thereof. It flows through a water supply pipe 5 to a germination rooting reservoir 4 and is drained through a drain pipe 8 to a river, a lake, a drainage ditch, or the like.

Here, the communication pipe 7 and the drain pipe 8 have their upstream end openings 18 as can be seen clearly in FIGS. 2 and 3.
Is bent in a substantially L-shape at the upstream end so as to face vertically upward, and the water level of the water 17 stretched over the nursery 2 and the germination root reservoir 4 exceeds the upstream end opening 18. When water 1
7 overflows through the upstream end opening 18 and flows into the communication pipe 7 and the drain pipe 8. That is, the installation height of the upstream end opening 18 is set to the nursery 2 or the germination root reservoir 4
It is the overflow water level at which the water inside is made to flow or drain to the downstream side as overflow water.

At the downstream end of the water supply pipe 5, the nursery 2
A flow rate adjusting valve 19 is provided so that the amount of water supplied to the germination rooting reservoir 4 can be adjusted.

In order to raise the seedlings of Reed using the reed raising seedling system 1 according to this embodiment, first, as shown in FIG. 2, near the surface of the water in the germination rooting reservoir 4 in which water 17 is stored. The stem 21 of the reed is left floating, and then the germination root is germinated and rooted from the stem 21 of the reed while the water is supplied to the germination root reservoir by the water supply equipment 3.

When the stem 21 of the reed is left floating and germinated for rooting, the top of the stem 21 of the reed is cut off if necessary.
After stopping the growth of the stem in the length direction, the stem of the reed 2
It is desirable to loosely bundle multiple 1's and float them on water.

By doing so, it is possible to prevent warp stem 21 from being dried and submerged, and also to prevent germinated root stem 21 from falling. Becomes

It has been confirmed by experiments that germination and rooting can be carried out from the stem 21 of the reed in 1 to 2 weeks by this step.

Next, as shown in FIG. 3, the stems 21 of the germinated roots of the reeds are cut into short pieces if necessary so that the reeds 15 are placed on the palm mat 41. The palm mat 41 is arranged on the upper surface of the nursery material 16 so as to be horizontally arranged.

When arranging the stem 15 of the reed on the palm mat 41, it may be arranged before or after the palm mat 41 is arranged on the upper surface of the nursery material 16. For example, in the former case, both ends of the reed stalk 15 are inserted into the palm mat 41 so that the reed stalk 15 is preliminarily inserted.
It is possible to temporarily fix the palm mat to the palm mat 41 and then dispose the palm mat. In addition, in order to improve seedling raising efficiency, the stems 21 of the reed that have germinated and rooted are selected to be the stems 15 of the reed, and these mats 4 are used.
It is conceivable to arrange a plurality of them in parallel.

Next, while supplying water to the nursery bed 2 with the water supply equipment 3 so that the water level in the nursery bed 2 is higher than the top of the palm mat 41 in such a state, the reeds are raised from the stem 15 of the reeds. To do.

In this way, the reed stem 15 horizontally arranged on the palm mat 41 grows as a seedling by extending the root from the palm mat 41 to the nursery material 16, but here,
Since the reeds are raised while water is supplied to the nursery 2, the reeds can be grown faster than when the conventional raising method is used. After the seedlings of the reeds have been sufficiently raised, the stems 15 of the reeds are transplanted together with the palm mat 41 into the wetlands or shipped as seedlings.

It has been confirmed by experimentation that seedlings that can be transplanted can be grown in 2 to 3 weeks by this step.

As described above, according to the reed seedling raising system 1 and the seedling raising method using the same according to the present embodiment, the palm mat 41 is placed on the palm mat when raising the reeds. When the conventional seedling raising method is used, the stems 15 are placed on the upper surface of the nursery material 16 so that they are horizontally arranged, and then the water is supplied to the nursery 2 while water is being fed by the water supply equipment 3. Reed grows faster than that, and it can be transplanted within a month or two after starting seedling raising work. This is considered to be because sufficient oxygen is supplied to the nursery bed 2 by flowing water in the nursery bed 2.

Therefore, it is possible to grow seedlings for 3 to 4 cycles per year, and it is possible to efficiently grow a large number of seedlings.

Also, the palm mat 4 is provided on the upper surface of the nursery material 16.
Since 1 is provided, when transplanting the reed seedlings, the palm mats 41 on which the reed seedlings are placed are taken out from the seedbed 2 and transported instead of digging out the reed seedlings from the seedbed 2. It is sufficient to lay it in a wetland such as a tidal flat, and as a result, it is not necessary to dig up a wetland for planting seedlings, and workability at the time of transplanting is improved.

After transplanting, the upper surface of the wetland is covered with the palm mat 41, so that the sand can be washed out due to waves and the like, so to speak, the erosion of the wetland can be suppressed, and even if the sand was washed out. Even so, since the reed seedling moves together with the palm mat 41, it is possible to prevent the reed seedling from dying or being submerged in water. Since the palm mat 41 is made of a biodegradable material,
After transplanting, it decomposes over time and becomes integrated with soil.

According to the reed raising system 1 for reeds and the raising method using the same according to the present embodiment, the palm mat 4 is used.
Since 1 is configured to have a three-dimensional void structure, the palm mat 41 is lightened by the voids to improve workability, and when transplanted to a wetland, the void formed in the palm mat 41 creates a wetland As the soil enters, the palm mat 41
The soil and the soil are integrated, and the above-mentioned erosion of the wetlands can be further suppressed.

According to the reed seedling raising system 1 of this embodiment, the water introduced from the river is stored in the open water tank 6.
Since a large amount of oxygen dissolves in the water when it is stored in the water, it becomes possible to cause water containing a large amount of oxygen to flow into the nursery bed 2 through the water supply pipe 5 and cause the water in the nursery to flow. It is possible to sufficiently supply the nursery bed 2 with oxygen necessary for the seedlings.

Further, since the water above the predetermined overflow water level is drained to the outside of the nursery 2, the water in the nursery 2 can be surely caused to flow and the water level of the nursery 2 is suitable for breeding reeds. It is possible to maintain a high water level.

According to the reed seedling raising system 1 according to the present embodiment, a plurality of nursery beds 2 are arranged in series, and the adjacent nursery beds 2 and 2 among the nursery beds 2 are connected to each other by a communication pipe 7. Overflow water was allowed to flow from the upstream seedbed 2 to the downstream seedbed 2 in the communication pipe, and the water supply pipe 5 was connected to the most upstream seedbed 2 of each seedbed 2. The water in the nursery 2 can be efficiently run.

Further, according to the reed seedling raising system 1 and the seedling raising method using the same according to the present embodiment, for germination rooting, water is stored and the reed stems 21 can be floated and left near the surface of the water. Since the reservoir 4 is provided, it becomes possible to select only the germinated rooted stems of the reed and place them on the palm mat 41, and the nursery 2 can be used efficiently.
The efficiency of raising seedlings of reeds can be improved.

In the present embodiment, as the biodegradable nursery mat, the palm mat 41 formed by fixing palm fibers into a rectangular shape so as to have a three-dimensional void structure is used. The structure and shape are arbitrary as long as they are water-permeable so that the reeds can be raised, and if the reeds have no problem in extending the roots or transporting the seedlings. , It does not need to have a three-dimensional void structure. Further, any material may be used as long as it is biodegradable, and for example, biodegradable plastic may be used.

Further, in this embodiment, the stems 21 of the reeds are once germinated and rooted in the germination and rooting reservoir 4, and thereafter,
Although it is arranged on the palm mat 41, depending on the conditions such as the mowing time, the germination rooting step in the germination rooting reservoir 4 is omitted, and the stems 21 of the reed are cut to an appropriate length as necessary. After that, the palm mat may be arranged on the upper surface of the nursery material so as to be horizontally arranged on the palm mat 41, and germinated and rooted, and subsequently, seedlings may be raised. . In this case, needless to say, the germination rooting reservoir 4 can be omitted.

Further, in this embodiment, the open type water tank 6 constituting the water supply facility 3 is installed at a high height to secure the running water in the nursery bed 2. However, the running water in the nursery bed is secured. The means for doing so is not limited to such a configuration, and may be configured to forcibly cause water to flow using a water supply facility using a predetermined water supply pump or drainage pump. Further, the running water may not be secured by the water supply facility, but the running water in the nursery bed may be secured by the structure of the nursery bed. For example, if a nursery bed is formed by using a step or a slope of the terrain, the nursery bed can be naturally run.

Further, in the present embodiment, the overflow water is drained as it is to the river, the lake, the drainage ditch, etc. However, instead of this, the overflow water is circulated to the open type water tank 6. It doesn't matter.

In this embodiment, one germination root storage reservoir 4 and two seedbeds 2 are provided, but it goes without saying that the number of germination root storage reservoirs and seedbeds is arbitrary.

Further, in the present embodiment, the nursery beds 2 are arranged in series and the adjacent nursery beds 2 and 2 are communicated with each other by the communication pipe 7. However, water is supplied to each nursery bed 2 and the nursery beds 2 are connected to each other. If the water inside can be made to flow, how to arrange the nursery 2 is arbitrary,
For example, the nurseries may be arranged in parallel instead of in series, or a plurality of nurseries arranged in series may be arranged in parallel.

The same applies to the number and arrangement of the germination rooting reservoirs. Further, the germination rooting reservoir and the nursery bed may be combined, for example, they may be arranged in series and communicated with each other through a predetermined communication pipe.

In this embodiment, sand or soil is used as the nursery material 16, but instead of this,
The dredged mud or a dewatered cake produced by dewatering the dredged mud may be used as a seed bed material.

In such a case, since the dredged mud or the dehydrated cake produced by dehydrating the dredged mud contains a large amount of nutrient salts, an environment suitable for the growth of reeds is obtained, thus promoting the growth of reeds. The seedling raising period is shortened. Further, the dehydrated cake is usually used as an embankment material by adding a solidifying material, but for the dehydrated cake without adding the solidifying material and the dredged mud not subjected to the dehydration treatment,
It becomes possible to use them effectively without discarding them.

(Second Embodiment)

Next, a method for transplanting reeds according to the second embodiment will be described. It should be noted that parts and the like that are substantially the same as those in the first embodiment are designated by the same reference numerals and the description thereof is omitted.

In the method for transplanting reeds according to the present embodiment, first, as shown in FIG. 4, the bottom mud 33 of the water area 32 where reeds grow on the waterside 31 is dredged, and then the dredged mud soil is dredged. Is dehydrated to produce a dehydrated cake.

In such a process, for example, the bottom mud 33 is dredged by a high-concentration dredging vessel, the sediment is separated by the sediment separating device, the over-mud is once left in the sand settling tank, and then the supernatant mud is stirred. After being transferred to a tank, a flocculant is added and mixed with stirring, and then dehydrated by a dehydrator such as a screw decanter or a filter press, and the under portion thereof can be used as a dehydrated cake.

Next, the reeds are raised in the reed raising system 1 using the dehydrated cake as the nursery material 16. The reed breeding system 1 and the reed breeding method using the same have been described in detail in the above-described embodiment and its modification, and therefore the description thereof is omitted here. The reed breeding system 1 for reeds is constructed in the nursery yard by constructing a suitable nursery yard near the water area 32, for example, in the coastal area.

When the reeds are raised in a transplantable state by the reed breeding system 1, a palm mat 41 in which the reeds are placed is laid on the tidal flat 34 as a wetland formed in the water area 32. . The tidal flat 34 may exist naturally or may be artificially constructed.

As described above, according to the method for transplanting reeds according to the present embodiment, in the vicinity of the water area where the bottom mud 33 is dredged, the dehydrated cake is generated, the nursery 2 is installed, the reeds are raised, and the reeds are reed. Since all the work such as transplanting can be performed, the efficiency of the natural restoration work using reeds is improved, and the effective use of the dehydrated cake enables the nursery 2
It is not necessary to separately prepare the nursery material 16 used for the above, and the transplanting method has excellent economical efficiency.

Further, since all the steps can be performed in the water area 32 where the reeds were originally grown on the waterside, there is no concern of changing the reed's growth environment, and the reeds are raised and transplanted in a large amount in a short time. It becomes possible.

The operation and effect of the reed seedling raising system 1 and the seedling raising method using the same are the same as those in the first embodiment, and the description thereof is omitted here.

In the present embodiment, the dehydrated cake was used as the seed bed material, but dredged mud may be used instead.

[0130] Also in this structure, in addition to the same operational effects as described above, a remarkable operational effect that there is no need to perform dehydration treatment in the dredging work is exhibited.

[0131]

As described above, according to the reed raising system of the present invention, the reed raising method using the reed raising system, and the reed transplanting method, a biodegradable raising seedling mat is used when raising reeds. When the conventional seedling raising method is used, since the reed stalks are placed on the upper surface of the nursery material so that the stems are horizontally placed on the nursery mat, and the water is supplied to the nursery with running water. Reed grows faster than that, and it can be transplanted within a month or two after starting seedling raising work.

When transplanting the reed seedlings, rather than digging out the reed seedlings from the nursery, take out the nursery mat on which the reed seedlings are placed from the nursery and transport it to the wetlands such as tidal flats. Laying is sufficient, and as a result, there is no need to dig up wetlands for planting seedlings, improving workability during transplantation.

After transplanting, since the upper surface of the wetland is covered with the seedling raising mat, the sand is washed out by waves and the like.
So to speak, erosion of wetlands can be suppressed.

[0134]

[Brief description of drawings]

FIG. 1 is a diagram showing a reed seedling raising system according to a first embodiment, in which (a) is a plan view and (b) is a sectional view taken along line AA of (a).

FIG. 2 is a diagram showing a reed raising system for reeds according to the first embodiment and a reed raising method for reeds using the reed raising system.
-Cross section detail drawing which follows the C line.

FIG. 3 is a diagram showing a reed raising system according to the first embodiment and a reed raising method using the reed raising system, which is indicated by B in FIG. 1 (a).
-Detailed sectional view taken along line B.

FIG. 4 is a conceptual diagram showing how the reed transplanting method according to the second embodiment is being performed.

[Explanation of symbols]

1 Nursery system 2 Nursery 3 Water supply equipment 4 Reservoir for germination and rooting 5 Water supply pipe 6 Open-type water storage tank 7 Communication pipe 16 Nursery material 34 Tidal flat (wetlands) 41 Palm mat (nursery mat)

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) A01G 1/00 303 A01G 1/00 303C 27/00 27/00 502E 502S 502V 502W

Claims (14)

[Claims] 1. A nursery bed in which a predetermined nursery material is laid and filled with water, a water supply facility for supplying water to the nursery material, and a biodegradable nursery mat which is disposed on the upper surface of the nursery material. With, at least the seedbed and the water supply equipment so that the water level in the seedbed is higher than the top of the seedling mat and the water in the seedbed flows with the water supplied from the water supply equipment. A nursery system for reeds characterized by comprising either of these. 2. The reed raising system for reeds according to claim 1, wherein the raising mat has a three-dimensional void structure. 3. The water supply facility comprises an open type water storage tank for storing water introduced from a water source such as a river or lake, and a water supply pipe connecting the inside of the open type water storage tank with the inside of the nursery. Along with that, when the water level in the nursery exceeds the overflow water level set in the nursery, the water in the nursery is configured to be drained as overflow water to the outside of the nursery. Reed nursery system described. 4. The nursery system for reeds according to claim 3, wherein the overflow water is circulated in the open water tank. 5. A plurality of said nursery beds are arranged in series, and among said nursery beds, adjacent nursery beds are made to communicate with each other by a communication pipe, and the overflow water flows through the communication pipes from the upstream nursery bed to the downstream nursery bed. The nursery system for reeds according to claim 3, wherein the water supply pipe is connected to the most upstream seedbed among the seedbeds. 6. The reed raising system according to claim 1, wherein the dredged mud or a dehydrated cake produced by dehydrating the dredged mud is used as the nursery material. 7. The reed nursery system according to claim 1, further comprising a germination and rooting reservoir in which water is stored and a stem of the reed can be floated and left in the vicinity of the surface of the water. 8. A method for raising reeds in a reed in which a predetermined nursery material is laid and water is filled, wherein a biodegradable nursery mat is provided on the reed mat. Is placed on the upper surface of the nursery material so as to be in a horizontally arranged state, while water is flowing in the nursery bed so that the water level in the nursery bed is higher than the top end of the nursery mat in such a state. A method for raising a reed, wherein the reed is raised from the stem of the reed. 9. The method of raising reeds according to claim 8, wherein the raising seed mat has a three-dimensional void structure. 10. The seedbed material is a dredged mud or a dehydrated cake produced by dewatering the dredged mud.
Reed seedling raising method described. 11. A germination rooting reservoir in which water is stored before the seedling raising mat is placed on the upper surface of the nursery material so that the stems of reeds are horizontally placed on the seedling raising mat. 9. The method for raising reeds of Reed according to claim 8, wherein the reed stem is left floating near the surface of the water, and germinated and rooted from the reed stem. 12. The dredging of the bottom mud in the water area where reeds are growing on the waterside, the dredged mud soil is dehydrated to produce a dehydrated cake, and the dehydrated cake is laid as a nursery material and water A seedbed formed by stretching is provided near the water area, and a biodegradable seedling mat is arranged on the upper surface of the seedbed material so that the stems of reeds are horizontally arranged on the seedling mat. In the state, water is flowed in the nursery so that the water level in the nursery is higher than the top of the nursery mat, and reeds are raised from the stem of the reed, and then the nursery in which the reed seedlings are arranged. A method for transplanting reeds, wherein the mat is laid in a wetland such as a tidal flat formed near the water area. 13. A dredging of the bottom mud in the water area where reeds grow on the waterside, the dredged mud soil is laid as a seed bed material, and a water-filled seed bed is provided in the vicinity of the water area. A decomposable nursery mat is placed on the upper surface of the nursery material so that the stems of the reeds are placed horizontally on the nursery mat, and in such a state the water level in the nursery is the top of the nursery mat. Wetlands such as tidal flats formed in the vicinity of the water area where the reeds are raised from the stems of the reeds while running water in the nursery so that the height is higher than that of the reeds. A method for transplanting reeds, which is characterized in that 14. The method for transplanting reeds according to claim 12, wherein the seedling raising mat has a three-dimensional void structure.