JP2014231437A - Fertilization agent composition, flask for block mat, and block mat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fertilization agent composition capable of effectively promoting the growth of aquatic organisms such as Algae and environmentally friendly, a flask for a block mat using the same, and a block mat.SOLUTION: The block mat is formed from: a frame 26 for a block mat composed of an inner wall layer 16, an outer wall layer 18, a floor bottom layer 20, a holding part 22 and a reinforcing member 24; and concrete 12, the whole or a part of the frame for a block mat is impregnated into a fertilization agent composition including iron sulfate, vermiculite and a solvent, the inner wall layer 16, the outer wall layer 18, the floor bottom layer 20 and the holding layer 22 are made of cloth, and even after sewing, folding is possible.

Description

  The present invention relates to a fertilizer composition, a block mat formwork, and a block mat.

  Underwater plants of algae (comb, seaweed, etc.) that grow in rivers and oceans make up seaweed communities, which contribute to the breeding of aquatic resources such as aquatic organisms and carp fish that live there, and also for water purification. To contribute. Therefore, it is important to grow such underwater plants more efficiently from the viewpoints of securing marine resources and improving the marine organism growth environment. Therefore, fertilizers are used to promote the growth of underwater plants. For example, Patent Document 1 discloses a granular fertilizer containing iron sulfate and a natural salt.

  On the other hand, block mats (sometimes called "revetment blocks") have been used for the purpose of curing algae and fish fields and preventing erosion of the ocean and rivers. By laying block mats in rivers and oceans, artificial seaweed beds and fish fields can be nurtured. In recent years, it has been demanded to ensure strength in a short time and at low cost, and a block mat using concrete is used to meet such a demand.

  As a technique relating to such a block mat, Patent Document 2 discloses a technique for facilitating curing on a surface portion by providing a gap in concrete.

JP 2001-000072 A Japanese Patent Laid-Open No. 06-108437

  However, for example, the fertilizer component disclosed in Patent Document 1 is expected to have a certain fertilization effect, but the present situation is that a much better fertilization effect is required.

  And by laying a concrete block mat as disclosed in Patent Document 2 in the sea, it is possible to construct a seaweed basin or fish place, but it is not sufficient in terms of promoting the growth of underwater plants. Absent. Therefore, fertilizers such as those disclosed in Patent Document 1 have been put into the layable block mats and the like, but the fertilizing effect is still not sufficient for a long time. Absent. In addition, there is a demand for a block mat that is easy to manufacture on-site and that can provide a habitat for vegetation and school of fish while ensuring sufficient strength.

  The present invention has been made in view of the above circumstances, can effectively promote the growth of aquatic organisms such as algae, and is an environment-friendly fertilizer composition, a block mat formwork and a block using the same The purpose is to provide a mat.

  As a result of intensive studies to achieve the above object, the present inventors have effectively promoted the growth of aquatic organisms such as algae by using a fertilizer composition containing iron sulfate, vermiculite, and a solvent. The present invention has been completed by finding that it is environmentally friendly.

  That is, the fertilizer composition according to the present invention is a fertilizer composition containing iron sulfate, vermiculite, and a solvent.

  And it is preferable that the fertilizer composition which concerns on this invention further contains the compound containing at least 1 sort (s) chosen from the group which consists of Na, Mg, Mn, Zn, S, and Cu. Thereby, the speed of cell division after spore landing and the growth speed after germination can be increased.

  Moreover, in the fertilizer composition of this embodiment, it is preferable that content of the said iron sulfate is 30-45 mass%, and content of the said vermiculite is 0.03-0.20 mass%. By setting the content in the above range, it is possible to provide conditions advantageous for algae growth.

  Then, in this invention, it is preferable to set it as the block mat formwork provided with the member impregnated with the said fertilizer composition. Since the fertilizer composition is liquid, by using a member impregnated with the fertilizer composition, the fertilizer effect at the time of laying in a river or ocean can be stably exhibited over a long period of time. The member to be impregnated is not particularly limited as long as it is a member that can hold the fertilizer composition of the present embodiment. For example, various cloths, concretes, and the like can be used. A cloth made of a natural material such as a palm material is preferable from the viewpoint of reducing the burden on the environment. In this embodiment, algal spores adhere to the surface of the impregnated member and grow, but by using a member having a different roughness, the algal spores can be selectively implanted at a desired location. it can.

  The block mat formwork includes a formwork member formed of a foldable material, and the formwork member includes an inner wall layer that forms an opening into which a cylindrical body can be inserted, and an outer periphery of the inner wall layer. An outer wall layer configured to surround, a bottom formed from a lower end of the inner wall layer to a lower end of the outer wall layer so as to form a space for pouring concrete; the inner wall layer and the outer wall in the space; A holding portion that is spanned between the layers, and the inner wall layer is a block mat form configured to be erected by inserting the cylindrical body into the opening. It is preferable. By using the block mat mold having such a configuration, the mold member can be folded, so that workability is excellent and a predetermined strength can be imparted.

  And it is preferable to further provide the plate-shaped reinforcement member attached to the said outer wall layer. By setting it as a formwork member provided with such a reinforcing member, the outer wall layer can be made independent.

  Furthermore, the reinforcing member is preferably a natural material. By using natural materials, the burden on the environment can be reduced. Although it does not specifically limit as a natural material, A palm material etc. are more preferable.

  Moreover, it is preferable that the said formwork member is the product made from the cloth by which the waterproof process was given to the surface which contacts the said concrete at least. Although the kind of cloth is not particularly limited, it is more preferably a hood cloth from the viewpoint of waterproofness and strength.

  Further, the block mat formwork may include a wire rod that is spanned between the upper end portion of the cylindrical body and the upper end portion of the outer wall layer in a state where the cylindrical body is inserted into the opening. preferable. The shape retention of the block mat mold can be improved by bridging the cylindrical body and the outer wall layer with such a wire.

  Furthermore, in this invention, it can be set as a block mat provided with the mold member impregnated with the said fertilizer composition. In such a block mat, the fertilizer composition is sufficiently applied to the block mat as compared with the case where the fertilizer composition is applied to the block mat by using a block mat using a member impregnated with the fertilizer composition. Can be attached. For example, a member impregnated with a fertilizer composition can be used as a mold member, and a block mat can be formed by filling the interior of the mold member with concrete. When such a block mat is laid in the river or the ocean, the fertilizer can be diffused in a wide range in the water over a long period of time.

  The mold member is formed of a foldable material, and the mold member includes an inner wall layer that forms an opening into which a cylindrical body can be inserted, and an outer wall layer that is configured to surround the outer periphery of the inner wall layer. And a bottom portion formed from the lower end of the inner wall layer to the lower end of the outer wall layer, and the inner wall layer and the outer wall layer in the space so as to form a space for pouring concrete. And the inner wall layer is configured to stand by inserting the cylinder into the opening, and is cured in the space with the cylinder inserted into the opening. The block mat is preferably formed by pouring the previous concrete and hardening the concrete. In the block mat having such a configuration, since the formwork member can be folded, the workability is excellent and a predetermined strength can be imparted.

  ADVANTAGE OF THE INVENTION According to this invention, the growth of aquatic organisms, such as algae, can be promoted effectively, and an environmentally friendly fertilizer composition, a block mat frame using the same, and a block mat can be provided.

It is a top view of the block mat concerning this embodiment. It is a side view of the block mat concerning this embodiment. It is a top view when the block mat formwork concerning this embodiment is developed three-dimensionally. It is side surface sectional drawing when the formwork for block mats concerning this embodiment is expand | deployed in three dimensions. It is the schematic for demonstrating the first half of the manufacturing procedure of the block mat mold which concerns on this embodiment, and is a perspective view which shows the three-dimensional expansion | deployment state of a mold. It is the schematic for demonstrating the first half of the manufacturing procedure of the block mat formwork which concerns on this embodiment, and is a perspective view which shows the insertion state of the vinyl chloride pipe to an inner wall layer. It is the schematic for demonstrating the second half of the manufacturing procedure of the block mat frame which concerns on this embodiment, and is a perspective view which shows the mounting state of the reinforcement member to an outer wall layer. It is the schematic for demonstrating the second half of the manufacturing procedure of the block mat formwork which concerns on this embodiment, and is a perspective view which shows the latching state of the wire between a vinyl chloride pipe and an outer wall layer.

  Hereinafter, modes for carrying out the present invention (hereinafter simply referred to as “the present embodiment”) will be described in detail with reference to the drawings as necessary. The following embodiments are examples for explaining the present invention, and are not intended to limit the present invention to the following contents. And this invention can be deform | transformed suitably and implemented within the range of the summary. In the drawings, positional relationships such as up, down, left and right are based on the positional relationships shown in the drawings unless otherwise specified. Further, the dimensional ratios in the drawings are not limited to the illustrated ratios.

(Fertilizer composition)
The fertilizer composition of this embodiment contains iron sulfate, vermiculite, and a solvent. Such a fertilizer composition can accelerate cell division of aquatic plants such as algae and promote the growth of aquatic plants after germination. Underwater creatures can grow dramatically. Further, as will be described later, since the fertilizer composition of the present embodiment is in a liquid state, a further fertilization effect can be exerted by impregnating it with a block mat mold or a block mat member. . Hereinafter, each component of the fertilizer composition will be described.

The ferrous sulfate contained in the fertilizer composition of the present embodiment may be ferrous sulfate (FeSO ₄ ), ferric sulfate (Fe ₂ (SO ₄ ) ₃ ), these hydrates, It may be a mixture. Furthermore, it may be polyferric sulfate or polyferric sulfate. By containing iron sulfate, iron ions can be eluted and have a beneficial effect on the aquatic environment and ecosystem. Among these, ferrous sulfate is preferable from the viewpoint that a fertilizing effect can be obtained more remarkably.

Vermiculite is a substance mainly composed of SiO ₂ , MgO and Al ₂ O ₃ , and vermiculite is heat-treated at high temperature. As the vermiculite, vermiculite expanded by heat treatment may be used, or unexpanded vermiculite may be used. The kind and shape of vermiculite are not particularly limited, and known ones can also be used. Vermiculite has a higher base substitution capacity (CEC), and therefore a superior fertilization effect can be obtained.

  It does not specifically limit about the form and kind of vermiculite contained in the fertilizer composition of this embodiment. For example, an ore formed by hydrolyzing biotite and having the property of expanding like a straw when heated. Moreover, in this embodiment, the substance derived from vermiculite can be used within the range of the effect. The substance derived from vermiculite here includes those obtained by chemically and physically treating the above-described vermiculite. Examples of such a material include vermiculite treated with an acidic substance. Specifically, a vermiculite treatment liquid is obtained by extracting or concentrating mineral elements contained in vermiculite using an acidic substance such as sulfuric acid. And the like. In particular, in consideration of the case where it is impregnated into a mold member or the like to be described later, the liquid is preferable.

  Usually, when extracting or concentrating a mineral element from vermiculite, since it processes using acidic substances, such as a sulfuric acid, the obtained process liquid tends to become a strong acidity. Therefore, conventionally, vermiculite treated with an acidic substance may be limited to uses such as sterilization and water purification. However, in the present embodiment, vermiculite treated with an acidic substance is used in combination with a concrete formwork member, which will be described later, to effectively create a neutral growth environment by reacting with alkaline concrete. Is possible. Furthermore, since the trace element component contained in vermiculite can be efficiently extracted, algal cells can be further activated and nutrient absorption of the algae can be further promoted.

  It does not specifically limit as a solvent contained in the fertilizer composition of this embodiment, What is necessary is just a thing which can melt | dissolve the above-mentioned iron sulfate and vermiculite, The kind is not limited. As the solvent, for example, an aqueous solution containing an inorganic salt such as water or seawater is used. Among these, seawater is preferable from the viewpoint of economy and environmental friendliness. Thus, since the fertilizer composition of this embodiment is liquid, various members, such as a mold member mentioned later, can be impregnated in the fertilizer composition. Furthermore, since the fertilizer composition can be uniformly attached to these members, or can be attached in an overlapping manner, it is possible to adjust the economic efficiency and the continuity of the effect.

  The compounding ratio of each component in the fertilizer composition of the present embodiment is not particularly limited, and can be appropriately selected in consideration of the desired effect and the purpose of use. In particular, the content of iron sulfate is 30 to 45% by mass, the content of vermiculite is preferably 0.03 to 0.20% by mass, the content of iron sulfate is 35 to 37% by mass, The vermiculite content is more preferably 0.05 to 0.15% by mass. By setting it as the said content, the effect of this embodiment becomes still more remarkable. By setting the content of vermiculite to 0.03% by mass or more, the effect of preventing ultraviolet rays due to Ti or the like contained in vermiculite tends to be further improved, and a more excellent fertilizing effect can be imparted. By making the content of vermiculite 0.03% by mass or more, the agglomeration effect due to the components contained in vermiculite tends to be further improved, and the influence of suspended substances in the initial stage of use can be mitigated. As a result, it is possible to expect a more excellent effect for protecting the growth environment.

  Furthermore, the fertilizer composition of this embodiment may further contain other additives within the range of its effects. The fertilizer composition according to this embodiment preferably further contains a compound containing at least one selected from the group consisting of Na, Mg, Mn, Zn, S, and Cu. Thereby, the rate of cell division after spore landing and the growth rate after germination can be increased. Examples of the compound containing Na include sodium chloride and sodium thiosulfate. Examples of the compound containing Mg include magnesium chloride, magnesium acetate, magnesium sulfate and the like. Examples of the compound containing Mn include manganese hydroxide, manganese chloride, potassium permanganate and the like. Examples of the compound containing Zn include zinc hydroxide. Examples of the compound containing S include magnesium sulfate. Examples of the compound containing Cu include copper hydroxide (I) and copper hydroxide (II). These compounds may be used individually by 1 type, and may use 2 or more types together.

  It does not specifically limit as a manufacturing method of the fertilizer composition of this embodiment, For example, the method etc. which dissolve each above-described component in solvents, such as water, are mentioned. As a more economical method, for example, iron sulfate produced in a titanium ore production process, a steel slag production process, or the like can be used. Alternatively, seawater or the like can be used as a solvent.

  The usage method of the fertilizer composition which concerns on this embodiment is not specifically limited, According to use environment etc., a suitable method can be employ | adopted suitably. As a simple method, a method of directly spraying in rivers and oceans can be adopted. In addition, a method in which a fertilizer composition according to the present embodiment is impregnated with an absorbent member such as soil or absorbent resin is filled in a sandbag, suspended in water, or left still. it can. As one of the particularly preferred embodiments, a block mat mold or block mat provided with a member impregnated with the fertilizer composition can be mentioned. For example, a block mat formwork (formwork member) is used as a block mat formwork using a member impregnated with a fertilizer composition, and the inside of the formwork member filled with concrete is used as a block mat. be able to. Thereby, the growth of the underwater plant which comprises an algae field and a fish field, and lies there can be promoted. By impregnating the member with the fertilizer composition, the adhesion of the fertilizer composition to the block mat mold or the block mat can be further improved. For example, in a conventional concrete block mat, since a fertilizer was only applied to the surface of the block mat, adhesion was insufficient and a sufficient fertilizing effect could not be obtained. However, when the block mat of the present embodiment is laid in the river or the ocean, the fertilizer composition impregnated in the member elutes in water, so that the chemical effect by the fertilizer composition works more effectively, and the algae It is possible to effectively promote the growth of underwater organisms.

  Furthermore, the concrete used for the concrete block mat of this embodiment is usually alkaline. Therefore, when the fertilizer composition containing vermiculite treated with an acidic substance as described above is used, the neutral growing environment is effectively created by reacting the vermiculite treated with the acidic substance with concrete. Since the effect that it can be obtained is acquired, it is preferable.

  The material of the member impregnated with the fertilizer composition is not particularly limited as long as it can be impregnated with the fertilizer composition. As a material of such a member, for example, cloth such as straw and hemp is preferable from the viewpoint of impregnation and workability when laying a block mat, and hood cloth is more preferable from the viewpoint of waterproofness and strength.

  The method for impregnating the member with the fertilizer composition is not particularly limited as long as the fertilizer composition soaks into the member. For example, when a liquid fertilizer composition is used, a method of soaking the member in a fertilizer composition (solution) that has been drawn in advance (so-called “dobu-zuke”) or a fertilizer composition (solution) on the surface of the member For example, a method of impregnation by spraying may be used.

  Hereinafter, the form of the block mat mold and the block mat of the present embodiment will be described in more detail.

(Block mat formwork and block mat)
FIG. 1 is a plan view of a block mat according to the present embodiment, and FIG. 2 is a side view of the block mat. The block mat 10 can be applied as a seawall or river revetment block. The block mat 10 includes a hardened concrete 12, an inner wall layer 16 that covers an inner peripheral surface of a circular hole 14 provided in the center of the concrete 12, and an outer wall layer 18 that covers a vertical wall surface on the outer periphery of the concrete 12. The floor bottom layer 20 covering the bottom surface of the concrete 12 is provided. The outer wall layer 18 is provided with a reinforcing plate 24 formed of palm fiber, which is a natural material. The reinforcing plate 24 may be provided on the outer wall side (the outer side of the block mat 10) of the outer wall layer 18 or may be provided on the inner wall side (the inner side of the block mat 10). From this point of view, it is preferably provided on the inner wall side. The reinforcing plate 24 is held by a holding portion 22 provided on the outer wall layer 18.

  The external dimensions of the block mat 10 having the above configuration are not particularly limited. For example, in the case where the total amount is a 2-ton type, the length × width is 1300 to 1600 mm × 1300 to 1600 mm and the height is about 350 to 450 mm in plan view. Therefore, a suitable outer dimension can be selected appropriately depending on the situation of the river ocean to be laid. That is, the shape of the block mat 10 can be appropriately selected in consideration of the inclination angle of the surface to be laid, the area, the relative position to the water surface, linearity, etc., but the standard size is as described above. It is as follows.

  In the present embodiment, raw concrete (also referred to as “fresh concrete”) is poured into a formwork 26 (see FIG. 3) at a construction site such as a river or the ocean. The block mat 10 is used. In other words, the inner wall layer 16, the outer wall layer 18, the floor bottom layer 20, the holding portion 22, and the reinforcing member 24 other than the concrete 12 described above are components constituting the mold 26 and serve as a block mat mold. In the present embodiment, the entire block mat formwork may be impregnated with the fertilizer composition, or a part of the form may be impregnated with the fertilizer composition. Good.

  Among the above, the inner wall layer 16, the outer wall layer 18, the floor bottom layer 20, and the holding portion 22 are preferably made of cloth and previously formed into a bag shape by sewing. Since these are made of cloth, they can be folded even after sewing. The cloth type is more preferably a hood cloth from the viewpoint of waterproofness and strength. In this embodiment, when building a revetment block in rivers, oceans, etc., the necessary number of molds 26 can be manufactured and transported to the site in a folded state. , Work place restrictions can be relaxed.

  The shape of the mold 26 is not particularly limited, but is preferably a woven fabric from the viewpoint of shape followability, and the weaving method is to make the joints fine so that at least the ready-mixed concrete does not ooze out. Can do. From such a viewpoint, it is more preferable that waterproofing is performed.

  FIG. 3 is a plan view when the block mat mold according to the present embodiment is developed three-dimensionally, and FIG. 4 is a side cross-sectional view when the block mat mold is expanded three-dimensionally. . 3 and 4 show a state in which the formwork 26 is unfolded to form a three-dimensional structure, and shows a state before the concrete 12 (see FIGS. 1 and 2) is poured.

  Between the inner wall layer 16 and the outer wall layer 18, a belt-like member 28 is stretched. The belt-like member 28 is preferably made of hooded cloth from the viewpoint of flexibility, and more preferably sewn on each of the inner wall layer 16 and the outer wall layer 18. From the viewpoint of shape retention, the belt-like member 28 is preferably extended radially from the inner wall layer 16 to the outer wall layer 18 at a substantially equal angle (about 45 °) in plan view. Further, when viewed from the side, it has a two-upper structure at the same plan view position. The angle is also appropriately determined by the number of strip members.

  When the uncured concrete 12 (see FIGS. 1 and 2) is poured, the band-shaped member 28 is buried in the concrete 12, but the concrete 12 before curing is subjected to pressure applied to the outer wall layer 18. It is tense and has the role of maintaining a distance from the inner wall layer 16. Due to the tension of the belt-like member 28, the deformation of the outer wall layer 18 can be suppressed until the concrete 12 is hardened.

  Further, before the concrete 12 is poured, a vinyl chloride pipe 30 that is a cylindrical body is inserted inside the inner wall layer 16 and is erected at the center. The vinyl chloride pipe 30 prevents the inner wall layer 16 from being crushed by the poured concrete 12, and can maintain the inner wall layer 16 as a base.

  Further, a wire 32 is stretched between the peripheral edge of the upper end portion 30 </ b> A of the vinyl chloride pipe 30 and the upper end portion 18 </ b> A of the outer wall layer 18. This wire 32 can also exhibit the function of maintaining the pressure of the outer wall layer 18 from the concrete 12 by the strip member 28.

  When the preparations as described above (three-dimensional formation of the hood cloth formwork 26, insertion of the vinyl chloride pipe 30 into the inner wall layer 16, hooking of the wire 32 to the outer wall layer 18, etc.) are completed, Then, it is poured into the space between the inner wall layer 16, the outer wall layer 18, and the floor bottom layer 20 and hardened to become the concrete 12.

  Hereinafter, the block mat mold and the block mat manufacturing procedure of the present embodiment will be described in more detail. FIG. 5 is a schematic view for explaining the first half of the manufacturing procedure of the block mat mold according to the present embodiment, and is a perspective view showing a three-dimensional development state of the mold. FIG. 6 is a schematic view for explaining the first half of the manufacturing procedure of the block mat mold according to the present embodiment, and is a perspective view showing a state in which the vinyl chloride pipe is inserted into the inner wall layer. FIG. 5 shows a state in which the inner wall layer 16 and the outer wall layer 18 of the folded mold 26 are erected, and the distance between the inner wall layer 16 and the outer wall layer 18 in a state where the belt-like member 28 is tensioned in this state. Is decided. In FIG. 5, the three-dimensional shape is maintained, but it is not always necessary to maintain such a state in the case of hood cloth or the like.

  Next, as shown in FIG. 6, a vinyl chloride pipe 30 is inserted and erected inside the inner wall layer 16. By inserting the vinyl chloride pipe 30, the inner wall layer 16 can maintain its cylindrical shape. In FIG. 6, the outer wall layer 18 is erected. However, when the outer wall layer 18 is made of a flexible member such as a hood cloth, the outer wall layer 18 does not necessarily have to stand independently in such a state.

  Subsequently, the second half of the manufacturing procedure will be described. FIG. 7 is a schematic view for explaining the latter half of the manufacturing procedure of the block mat mold according to the present embodiment, and is a perspective view showing a mounting state of the reinforcing member to the outer wall layer. FIG. 8 is a schematic diagram for explaining the latter half of the manufacturing procedure of the block mat mold according to the present embodiment, and is a perspective view showing a state in which the wire rod is hooked between the vinyl chloride pipe and the outer wall layer. is there. First, as shown in FIG. 7, the reinforcing member 24 is attached to the holding portion 22 provided on the inner wall side of the outer wall layer 18. The reinforcing member 24 is provided with a cut 24A. The reinforcing member 24 is mounted on the inner wall side of the outer wall layer 18 by loading the reinforcing member 24 between the outer wall layer 18 and the holding portion 22 while passing the band-shaped member 28 of the mold 26 through the notch 24A of the reinforcing member 24. be able to. By mounting the reinforcing member 24, the outer wall layer 18 can be self-supporting.

  Then, as shown in FIG. 8, the wire 32 is stretched over the upper end portion 30 </ b> A of the vinyl chloride pipe 30 and the upper end portion 18 </ b> A of the outer wall layer 18. The number of the wires 32 is not limited, but a plurality of wires 32 are preferable. This span can be hooked by attaching hooks or the like to both ends of the wire 32, for example. Although the length dimension of the wire 32 is not specifically limited, It is preferable to set the outer wall layer 18 so as to be in an upright state when the hooking is completed. In this dimension setting, for example, if the mounting position can be adjusted by using a hook as described above, the dimension can be easily adjusted.

  In the state of FIG. 8, the concrete 12 before hardening is poured. By pouring the concrete 12, the inner wall layer 16 and the outer wall layer 18 are applied with pressure from the concrete 12 and can be tensioned. At this time, since the vinyl chloride pipe 30 is inserted, the inner wall layer 16 is maintained in a cylindrical shape. The outer wall layer 18 can withstand the pressure of the concrete 12 and maintain the state shown in FIG. 8 when the belt-like member 28 is stretched and the wire 32 is tensioned.

  After the poured concrete 12 is hardened, the wire rod 32 is removed, and the vinyl chloride pipe 30 is extracted to obtain a finished product of the block mat 10 (see FIGS. 1 and 2).

  In the finished block mat 10, the belt-like member 28 is buried in the concrete 12. Since the reinforcing member 24 is made of a palm material such as palm fiber, it can form a suitable habitat for vegetation and fish school when it is laid as a revetment block in a river or ocean.

  As described above, in the present embodiment, the necessary number of folded molds 26 are transported to the revetment block laying construction site such as a river or the ocean, and the formwork 26 made of hood cloth is folded there. After three-dimensionalizing and applying predetermined reinforcement (insertion of vinyl chloride 30, hooking of wire 32, etc.), concrete 12 is hardened according to the form by pouring fresh concrete (concrete 12 before hardening). Then, the block mat 10 can be completed by removing the vinyl chloride 30 and the wire 32 (the frame 26 remains as it is).

  In the block mat 10, a hood cloth is used as a material for the mold 26, because the material can be impregnated with the fertilizer composition and can be waterproofed. It is excellent in strength and is a natural material, so even if other materials corrode due to secular change, harmful substances do not flow into the water and burden the environment. This is because it can be reduced. However, in this embodiment, other materials may be used as long as they have at least a member that can be impregnated with the fertilizer composition, are foldable, and have a predetermined strength and waterproofness. Of course. For example, inorganic fibers or organic fibers can be used depending on the installation environment.

  EXAMPLES Hereinafter, although an Example demonstrates this invention in detail, this invention is not limited to these.

<Example 1>
(Water tank experiment (Boshu Chikura Fishery Cooperation Association))
First, cement used for construction (manufactured by Taiheiyo Cement Co., Ltd., ordinary boltland cement), small gravel particles, and fine sand particles were mixed and formed into a substantially rectangular parallelepiped shape, and allowed to stand for 3 weeks to obtain a cured product. The obtained cured product was cut and a rectangular parallelepiped of 4 cm × 4 cm × 12 cm was used as a test body. First, 500 g of ferrous sulfate (manufactured by Ishihara Techno Sangyo Co., Ltd.) and 2 g of mineral liquid extracted from vermiculite (obtained from Water Design Institute, trade name “Seamarok”; hereinafter referred to as “vermiculite treatment liquid”), seawater It was made to melt | dissolve in 1498g and the fertilizer solution 1 (total weight 2000g) was prepared. And the leaf body of the kombu (Laminaria japonica) of the magnitude | size shown in Table 1 was made to grow on the test body. And the seawater of the aquaculture experiment facility of the Boshu Chikura fishery cooperative association was put in the water tank with a circulation device, and the water temperature was maintained at 14-18 ° C., and the water was circulated for 3 weeks. After 3 weeks, the kombu was taken out, and the increase in leaf width and weight was measured to evaluate how much it had grown from the start of the test. In addition, the test was performed using two test bodies and evaluated based on the average value (N = 2).

<Comparative Example 1>
The test was conducted in the same manner as in Example 1 except that no fertilizer solution was used.

<Comparative example 2>
As the fertilizer solution, the same manner as in Example 1 except that 2000 g (500 g ferrous sulfate, 1500 g seawater) of fertilizer solution 2 containing only ferric sulfate and seawater was not used as the fertilizer solution. And tested.

  The results of Example 1 and Comparative Examples 1 and 2 are shown in Table 1.

  As shown in Table 1, in Example 1, it was confirmed that the growth of the kombu was promoted as compared with Comparative Examples 1 and 2. In particular, compared with Comparative Examples 1 and 2, it was confirmed that Example 1 had a significant increase in the weight of the comb.

<Example 2>
(Real sea experiment)
The effect of fertilizer solution was verified in the actual sea area.
First, with respect to the fertilizer solution 1 (2000g) produced in Example 1, the mixture which mixed Shibame soil (made by Kanuma Kosan Co., Ltd.) and red soil (made by Fukuzawa Kogyo Co., Ltd., red soil No. 5) in the ratio of 3: 2. 5000 g of soil was mixed and dried for one week. What filled this with the water-permeable Korean hemp sandbag of the size of 20 cm x 30 cm was prepared.
And the said sandbag bag was hung on the growth experiment rope which wound the spore of the kombu (Laminaria japonica), and it arrange | positioned in the ocean in a fishing port for 79 days. In the experiment, the weight, the number of strains, the leaf length, and the leaf width of the kombu on the 45th and 79th days from the start of the experiment were measured. The water temperature conditions during the test ranged from 13 to 17 ° C. In the test, three strains were attached to the rope at 30 cm intervals under the same conditions, and evaluated based on the average value (N = 3).

<Comparative Example 3>
The test was performed in the same manner as in Example 1 except that the fertilizer solution 1 was not used.

<Comparative example 4>
It tested like Example 1 except the point which used the fertilizer solution 2 which does not contain a vermiculite process liquid instead of the fertilizer solution 1. FIG.

  The results of Example 2 and Comparative Examples 3 and 4 are shown in Table 2.

  As shown in Table 2, in Example 2, it was confirmed that the growth of the kombu was promoted as compared with Comparative Examples 3 and 4.

  The fertilizer composition according to the present invention can effectively promote the growth of aquatic organisms such as algae, and can be used as an environmentally friendly river / marine fertilizer. Moreover, the block mat formwork and block mat using the same can be used as a seawall / river revetment block or the like.

DESCRIPTION OF SYMBOLS 10 ... Block mat (bank protection block), 12 ... Concrete, 14 ... Circular hole, 16 ... Inner wall layer (base part), 18 ... Outer wall layer (surface layer part), 18A ... Upper end Part, 20 ... floor bottom layer, 22 ... holding part, 24 ... reinforcing plate (reinforcing member), 26 ... formwork member (formwork), 28 ... strip-like member (holding part), 30 ... Vinyl chloride pipe (cylinder), 30A ... Upper end, 32 ... Wire

Claims (12)

  A fertilizer composition comprising iron sulfate, vermiculite and a solvent.   The fertilizer composition of Claim 1 which further contains the compound containing at least 1 sort (s) chosen from the group which consists of Na, Mg, Mn, Zn, S, and Cu. The iron sulfate content is 30 to 45 mass%,
The vermiculite content is 0.03 to 0.20 mass%,
The fertilizer composition of Claim 1 or 2.   A block mat formwork comprising a member impregnated with the fertilizer composition according to any one of claims 1 to 3. The block mat formwork includes a formwork member formed of a foldable material,
The mold member is
An inner wall layer forming an opening into which the cylinder can be inserted;
An outer wall layer configured to surround an outer periphery of the inner wall layer;
A bottom formed from the lower end of the inner wall layer to the lower end of the outer wall layer so that a space for pouring concrete is formed;
A holding portion spanned between the inner wall layer and the outer wall layer in the space;
With
The block mat mold according to claim 4, wherein the inner wall layer is configured to be erected by inserting the cylindrical body into the opening.   The block mat formwork according to claim 5, further comprising a plate-like reinforcing member attached to the outer wall layer.   The block mat mold according to claim 6, wherein the reinforcing member is a natural material.   The formwork for block mats as described in any one of Claims 5-7 in which the said formwork member has at least the cloth by which the waterproof process was given to the surface which contacts the said concrete.   The block mat formwork according to claim 8, wherein the cloth type is a hood cloth.   The wire rod spanned between the upper end part of the cylinder and the upper end part of the outer wall layer in the state where the cylinder was inserted in the opening part, The line material according to any one of claims 5 to 9 provided. Block mat formwork.   A block mat comprising a mold member impregnated with the fertilizer composition according to any one of claims 1 to 3. The mold member is formed of a foldable material,
An inner wall layer forming an opening into which the cylinder can be inserted;
An outer wall layer configured to surround an outer periphery of the inner wall layer;
A bottom formed from the lower end of the inner wall layer to the lower end of the outer wall layer so that a space for pouring concrete is formed;
A holding portion spanned between the inner wall layer and the outer wall layer in the space;
With
The inner wall layer is configured to be erected by inserting the cylindrical body into the opening,
The block mat according to claim 11, which is formed by pouring concrete before hardening into the space in a state where a cylinder is inserted into the opening, and hardening the concrete.