A field structure that combines crop cultivation and aquaculture

Abstract

The utility model discloses a field structure that combines crop planting and aquaculture, and belongs to the field of ecological agricultural technology. It utilizes the corresponding settings of water storage ditches, planting fields, and water storage pits, as well as the corresponding settings of water cages and floating supports in the water storage pits, so that the field structure can not only meet the planting needs of crops such as rice, but also meet the breeding needs of aquatic crops such as leeches and snails, and complete ecological breeding within a limited planting area. The field structure that combines crop planting and aquaculture in the utility model has a simple structure and convenient breeding. It can effectively realize plant planting and aquaculture at the same time, make full use of the crop planting cycle and water conservancy conditions, greatly increase the types of breeding products of the field structure, meet the breeding needs of different aquatic products and crops, improve the economic benefits of the field per unit area, and realize the vigorous promotion of the ecological breeding model, which has good practical value and promotion prospects.

Description

Technical Field

[0001] The utility model belongs to the technical field of ecological agriculture, and in particular relates to a field structure for both crop planting and aquaculture. Background Art

[0002] In order to make better use of limited land and water resources, the concept of ecological farming is increasingly mentioned and implemented. How to better utilize land and water resources and increase the output value of farming per unit area in an environmentally friendly and efficient manner has become a key concern for the majority of growers / breeders.

[0003] At present, research on ecological farming is mainly focused on the combination of crop planting and aquaculture, such as the coordination of rice planting and fish and shrimp farming, making full use of the crop growth cycle and the water environment required during the crop growth cycle, so as to achieve the effect of "one water for two uses" and "one land for two harvests", and effectively improve the economic benefits per unit area of ​​rice fields.

[0004] However, the existing ecological breeding model often requires a large area and is usually only suitable for large rice fields, with limited application scenarios. Moreover, the existing ecological breeding models are mostly designed for fish and shrimp farming, and there are certain limitations on the objects of application. They cannot take into account the breeding needs of other aquatic products, and there are certain application limitations. Therefore, in order to improve the diversity of ecological breeding types and breeding categories, there is still a lot of room for research and improvement in the form of ecological breeding to meet the breeding needs of different aquatic products and crops. Utility Model Content

[0005] In response to one or more of the above-mentioned defects or improvement needs of the prior art, the utility model provides a field structure that combines crop planting and aquaculture, which can effectively meet the needs of crop planting and aquaculture, provides a new ecological farming model, and expands the categories and scope of application of ecological farming.

[0006] To achieve the above-mentioned purpose, the utility model provides a field structure for both crop planting and aquaculture, including a field ridge arranged along a circumferential direction, and also including a water storage ditch, a planting field and a water storage pit arranged in the area surrounded by the field ridge;

[0007] The water storage ditch extends along a first direction, and planting fields with planting surfaces lower than the ridges are respectively arranged on both sides of the water storage ditch in a width direction;

[0008] The water storage pit is arranged on one side of the two planting fields along the first direction, has a width greater than that of the water storage ditch, and is connected to one end of the water storage ditch; the ratio of the sum of the land areas of the water storage ditch and the water storage pit to the sum of the land areas of the two planting fields is 1:9 to 1:19; and

[0009] The water storage pit stores water of a certain depth, and a net cage with a top opening and used for breeding leeches is floating in the water, and at least one floating bracket used for absorbing snails is floating on the water surface on one side of the net cage;

[0010] The net cage comprises a porous box body, the porous box body immersed in water has through holes of 40-100 meshes, and the top of the porous box body is 15-50 cm above the water surface.

[0011] As a further improvement of the utility model, at least one wetted overlap piece is provided between the floating support and the net cage;

[0012] One end of the bridging piece is connected to the floating support, and the other end of the bridging piece is slanted upward or connected to the top of the net cage.

[0013] As a further improvement of the utility model, the bridging member is a thick rope with one end connected to the floating support and the other end passing over the top of the net cage and hanging into the water inside the net cage;

[0014] or

[0015] The lap joint is a split bamboo piece, one end of which is connected to the floating support, and the other end is placed or connected to the top of the net box; and a water-absorbing material is axially extended on the inner wall surface of the bamboo piece, so that at least one end of the water-absorbing material is always immersed in water.

[0016] As a further improvement of the utility model, the floating support is formed by tying together a plurality of floating rods, and a continuously extending groove is formed on one side of each floating rod immersed in water.

[0017] As a further improvement of the present invention, the depth of the water storage pit is greater than the depth of the water storage ditch; and

[0018] The bottom of the water storage ditch is 0.8-1.2 m lower than the planting surface of the planting field; the bottom of the water storage pit is 1.0-1.4 m lower than the planting surface of the planting field.

[0019] As a further improvement of the present invention, the length of the water storage pit in the first direction is 6 to 10 m; and / or the width of the water storage ditch is 2 to 3 m.

[0020] As a further improvement of the present invention, the ridge is 0.5-1.0 m higher than the planting surface of the planting field.

[0021] As a further improvement of the utility model, a middle partition is provided in the middle of the net box;

[0022] The middle partition extends along the length direction of the porous box, and its two sides in the width direction are respectively connected to the inner wall surface of the porous box, and its two ends in the length direction are respectively spaced a certain distance from the inner wall surface of the porous box;

[0023] The middle partition is provided with a plurality of through holes which are arranged at intervals and have an inner diameter of 4 to 6 cm, and a water scaffolding which is completely immersed in water is arranged above the middle partition.

[0024] As a further improvement of the utility model, the water scaffolding is formed by stacking and binding plant branches.

[0025] As a further improvement of the utility model, the top ring of the porous box body is provided with a top convex edge protruding upward and inward.

[0026] The above-mentioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0027] In general, compared with the prior art, the above technical solutions conceived by the utility model have the following beneficial effects:

[0028] (1) The field structure of the utility model combines crop planting and aquaculture. It utilizes the corresponding arrangement of water storage ditches, planting fields, and water storage pits, as well as the corresponding arrangement of underwater cages and floating supports in the water storage pits, so that the field structure can not only meet the planting needs of crops such as rice, but also meet the breeding needs of aquatic crops such as leeches and snails, thereby completing ecological breeding within a limited planting area, improving the economic benefits per unit planting area, increasing the diversity of crops that can be grown in the ecological breeding model, and meeting the breeding needs under different breeding conditions.

[0029] (2) The field structure of the utility model has both crop planting and aquaculture. By arranging a moistened overlap piece on the floating support, a connection path between the floating support and the cage is constructed by the overlap piece, so that the snails outside the cage can crawl along the overlap piece into the cage, thereby realizing automatic feeding of the snails to the aquatic products (such as leeches) in the cage, effectively simplifying the feeding process in the cage.

[0030] (3) The field structure of the utility model combines crop planting and aquaculture. By optimizing the structure and materials of the floating support, cage, and lap joints, the quality of aquaculture and the economic value of aquaculture can be further improved. In addition, by setting an intermediate partition and an in-water scaffold in the cage, the growth environment of the aquatic products in the cage can be further improved, the growth efficiency of the aquatic products in the cage can be improved, and the economic benefits of the ecological breeding model can be further improved.

[0031] (4) The field structure of the utility model combines crop planting and aquaculture. It has a simple structure and is convenient for planting and breeding. It can effectively realize plant planting and aquaculture at the same time, make full use of the crop planting cycle and water conditions, greatly increase the types of breeding products in the field structure, meet the breeding needs of different aquatic products and crops, improve the economic benefits per unit area of ​​land, and vigorously promote the ecological breeding model. It has good practical value and promotion prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0033] Figure 1 It is a plan layout diagram of a field structure having both crop planting and aquaculture in an embodiment of the utility model;

[0034] Figure 2 It is a structural cross-sectional view of a field structure having both crop planting and aquaculture in an embodiment of the utility model;

[0035] In all the drawings, the same reference numerals represent the same technical features, specifically:

[0036] 1. Ridge; 2. Planting field; 3. Water storage ditch; 4. Water storage pit; 5. Cage; 6. Floating support;

[0037] 501, porous box; 502, top convex edge; 503, middle partition; 504, water scaffolding;

[0038] 601. Floating rod; 602. Overlapping piece; 603. Pituitary body. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0040] In the description of the present invention, it should be understood that, unless otherwise expressly specified and limited, terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0041] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0042] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0044] Example:

[0045] like Figure 1 , Figure 2As shown in the preferred embodiment of the utility model, a field structure is proposed for both crop planting and aquaculture. Through the preferred design of the field structure and the corresponding setting of corresponding components, the field structure can meet the planting needs of plants and the aquaculture needs.

[0046] For the field structure in the preferred embodiment, it can be mainly used for planting rice and breeding leeches and field snails. Of course, it can be understood that if the breeding method is similar, the above-mentioned aquatic products can also be replaced accordingly, for example, the leeches cultured in the cage can be replaced with other aquatic products.

[0047] As follows, the scheme of the present utility model is specifically described by taking the mode of planting rice, breeding leeches and snails in field structure as an example.

[0048] Specifically, Figure 1 As shown in the figure, the field structure in the preferred embodiment includes a ridge 1 arranged along the circumferential direction. In actual arrangement, the ridge 1 can be Figure 1 The annular closed form shown in the figure can also be a single-sided open form (corresponding to Figure 1 An example is given, that is, no ridge 1 is set on the side of the two planting fields 2 away from the water storage pit 4).

[0049] At the same time, in the area of ​​the field ridge 1, a water storage ditch 3 is arranged along the first direction, and planting fields 2 are arranged on both sides of the width direction of the water storage ditch 3, which is equivalent to the water storage ditch 3 separating a complete planting field from the middle. In this way, the opening of a single water storage ditch 3 can meet the irrigation problem of the planting fields on both sides, thereby reducing the opening of the water storage ditch 3 and improving the utilization rate of the land.

[0050] In actual setting, the length of the water storage ditch 3 is preferably the same as the length of the planting field 2 in the first direction, and the width of the water storage ditch 3 is preferably selected according to the width and area of ​​the planting field 2. In a preferred embodiment, the width of the water storage ditch 3 is preferably 2-3m.

[0051] Furthermore, a water storage pit 4 is set on one side of the two planting fields 2 along the first direction. The width of the water storage pit 4 (corresponding to the width direction of the water storage ditch 3) is greater than the width of the water storage ditch 3, and is connected to one end of the water storage ditch 3. In this way, the water accumulated in the water storage pit 4 can enter the water storage ditch 3 accordingly, forming a water environment that is interconnected, making it convenient for aquatic products such as snails to travel back and forth between the planting fields 2, the water storage ditch 3, and the water storage pit 4.

[0052] In a preferred embodiment, both sides of the water storage pit 4 in the width direction extend to the two sides of the two planting fields 2 that are opposite to each other; accordingly, the length of the water storage pit 4 (in the first direction) is preferably set according to actual needs, for example, it is set to 6~10m in the preferred embodiment.

[0053] In addition, in order to meet the requirements of relevant national specifications and standards, the opening area of ​​the water storage ditch 3 and the water storage pit 4 should not be too large; however, in order to improve the effect of aquaculture, the opening area of ​​both should not be too small.

[0054] In actual settings, the total area of ​​the water storage ditch 3 and the water storage pit 4 preferably accounts for 5% to 10% of the area enclosed by the ridge 1, that is, the ratio of the sum of the land areas of the water storage ditch 3 and the water storage pit 4 to the sum of the land areas of the two planting fields 2 is 1:9 to 1:19. In this way, it can take into account the planting needs of crops and provide sufficient aquaculture space.

[0055] More specifically, in actual settings, water of a certain depth is stored in the water storage pit 4. It is not difficult to understand that the water depth in the water storage pit 4 can be adjusted accordingly according to different crop growth periods to ensure that it can cross the planting surface of the planting field 2 or be lower than its planting surface.

[0056] Furthermore, a net cage 5 with an opening at the top for aquaculture is arranged floatingly in the water storage pit 4. At the same time, at least one floating bracket 6 is arranged floatingly on the water surface on one side of the net cage 5 for adsorbing the farmed snails in the water. Such arrangement can effectively simplify the process of collecting the snails by the aquaculture personnel. In actual use, the snails can also be spread with baits that the snails like to eat on the floating bracket 6 to guide the snails to be adsorbed on the floating bracket 6.

[0057] In actual setting, the top of the cage 5 is set above the water surface, and is further 15 to 50 cm above the water surface. Such a setting can effectively prevent the aquaculture products in the cage 5 from escaping.

[0058] By arranging the net cage 5 and the floating support 6 in a floating form, the influence of the water depth change on the two can be effectively avoided. It can be understood that in order to achieve the above-mentioned floating effect, corresponding buoyancy bodies, such as floating balls, floating tubes or other forms of buoyancy bodies, can be arranged at the water entry parts of the net cage 5 and the floating support 6, which will not be described in detail here.

[0059] In addition, in order to achieve interaction between the water environment inside the cage 5 and the water environment outside it, the cage 5 in the preferred embodiment includes a porous box body 501 with a bottom immersed in water, and the porous box body 501 immersed in water has through holes of 40 to 100 meshes. In this way, on the basis of achieving communication between the water environment inside and outside the cage 5, the internal cultured objects (leeches in the preferred embodiment) can be effectively prevented from escaping through the holes.

[0060] By utilizing the above-mentioned setting of the net cage 5, aquaculture of aquatic products such as leeches can be effectively completed; and by utilizing the floating setting of the floating bracket 6 on the water surface, the survival characteristics of the field snails can be effectively utilized, so that a certain amount of field snails can be adsorbed on the floating bracket 6, and then the above-mentioned field snails can be collected manually and fed into the net cage 5. While cultivating the field snails, the feeding problem of the leeches is also solved.

[0061] In order to further simplify the feeding process of the field snails into the net cage 5, in a preferred embodiment, at least one wetted bridging piece 602 is preferably provided between the net cage 5 and the floating support 6. By utilizing the provision of the bridging piece 602 and the characteristic that the field snails like to crawl, some field snails can spontaneously enter the net cage 5, thereby simplifying the feeding process of the field snails into the net cage.

[0062] During actual setting, one end of the lap joint is connected to the floating support 6 , and the other end is lapped obliquely upward or connected to the top of the net cage 5 , forming an oblique running path between the floating support 6 and the net cage 5 .

[0063] In a specific preferred embodiment, the bridging member 602 is preferably a thick rope with an outer diameter between 8 mm and 30 mm, one end of which is connected to one end of the floating support 6, and the other end passes over the top of the cage 5 and hangs down into the water inside the cage 5. Since both ends of the rope are always immersed in water, the wettability of the rope can be guaranteed to a certain extent, providing conditions for the snails to crawl.

[0064] In more detail, in order to ensure the reliability of the thick rope setting, one end of the thick rope hanging into the net box 5 can be fixedly connected to the inner side of the net box 5, or a vertical body 603 (for example, a stone tied to it) can be set at the end to ensure that it is always immersed in the water of the net box 5.

[0065] Of course, it can be understood that in addition to the above forms, the lap joint 602 can also be set to other forms as needed, such as the form of a lap joint rod.

[0066] For example, in a specific preferred embodiment, the lap joint 602 is a split bamboo piece, one end of which is connected to the floating support 6, and the other end is connected to or placed on the top of the net box 5, and the bamboo is kept moistened by the capillary water absorption property of the bamboo. However, in order to ensure the moistening effect of the bamboo piece, it is preferred to arrange a water-absorbing material, such as a sponge or a cotton rope, on the inner wall surface of the bamboo piece along the axial direction, and at least one end of the water-absorbing material is always immersed in water. Such an arrangement can also provide a path for the snails to crawl.

[0067] In actual configuration, the floating support 6 is preferably formed by tying together a plurality of floating rods 601 to form a planar frame structure floating on the water surface. At the same time, in order to better adapt to the growth of field snails, the floating support 6 in the preferred embodiment is preferably woven and tied together by natural plant paper strips, for example, bamboo is used as the floating rods 601 for tying.

[0068] Furthermore, since the floor space of the water storage ditch 3 and the water storage pit 4 is limited, in order to expand the space for aquaculture, the water storage ditch 3 and the water storage pit 4 in the preferred embodiment are excavated to a corresponding depth.

[0069] Specifically, the depth of the water storage pit 4 is preferably greater than the depth of the water storage ditch 3 to ensure that the cage 5 has sufficient installation depth. In a preferred embodiment, the bottom of the water storage ditch 3 is 0.8-1.2 m lower than the planting surface of the planting field 2; the bottom of the water storage pit 4 is 1.0-1.4 m lower than the planting surface of the planting field 2.

[0070] Meanwhile, in actual setting, the length of the water storage pit 4 in the first direction is preferably 6-10m; and / or the width of the water storage ditch 3 is preferably 2-3m. Accordingly, the length of the planting field 2 in the first direction is preferably 60-100m.

[0071] In more detail, in order to ensure the water storage and irrigation needs of the planting field 2, in the preferred embodiment, the planting surface of the planting field 2 is preferably 0.5~1.0m lower than the road surface of the ridge 1.

[0072] Furthermore, in order to better improve the breeding effect of the net cage 5 on leeches, a middle partition 503 is provided in the middle of the net cage 5 in the preferred embodiment. The middle partition 503 is a plate-like structure, which extends along the length direction of the porous box 501, and its two sides in the width direction are respectively connected to the inner wall surface of the porous box 501, and its two ends in the length direction are respectively separated from the inner wall surface of the porous box 501 by a certain distance, such as Figure 1 As shown in .

[0073] In actual configuration, the middle partition 503 needs to meet the requirements of aquatic products passing through the upper and lower partitions, that is, the requirements of leeches and snails passing through the upper and lower partitions. Therefore, in actual configuration, it is preferred that a plurality of through holes with larger inner diameters are arranged at intervals on the middle partition 503, and in a preferred embodiment, the hole diameter is 4 to 6 cm.

[0074] At the same time, in order to provide a better living space for leeches, a water scaffold 504 completely immersed in water is further provided above the middle partition 503 .

[0075] In a preferred embodiment, the water scaffolding 504 is a three-dimensional structure with a certain volume, and various holes and gaps are formed inside it to facilitate the life of leeches. In actual settings, the water scaffolding 504 is formed by stacking and tying plant branches. The reason for using plants for tying is that most aquatic products will show a rejection reaction to industrial products such as plastics, which is not conducive to the growth of aquatic products. On the contrary, the scaffolding formed by plant branches has a better affinity for aquatic products and is more suitable for the growth of aquatic products such as leeches and snails.

[0076] Further preferably, considering that leeches have the ability to crawl and climb, a top flange 502 is preferably provided on the top ring of the porous box 501 to protrude inwardly, and the protruding width is preferably 10-20 cm.

[0077] More preferably, in order to prevent leeches from escaping during prolonged rainy weather, a closed film may be preferably provided on the top of the net box 5 .

[0078] It can be understood that according to the needs of actual breeding operations, the aquatic products cultured in the cages 5 and the water storage pits 4 may not be limited to leeches and snails. As long as the field structure in the preferred embodiment can meet the breeding needs of the corresponding aquatic products, corresponding replacement can be carried out, which will not be elaborated here.

[0079] In addition, in actual settings, considering the control of water levels in the water storage pit 4 and the water storage ditch 3, it is also preferred to provide at least one valve port on the ridge 1 that is connected to the external water supply system and can be opened and closed, which will not be elaborated here.

[0080] The utility model has a field structure for both crop planting and aquaculture, has a simple structure, and is convenient for planting and breeding. It can effectively realize plant planting and aquaculture at the same time, fully utilize the crop planting cycle and water conditions, greatly increase the types of planting and breeding products in the field structure, meet the planting and breeding needs of different aquatic products and crops, improve the economic benefits per unit area of ​​land, and vigorously promote the ecological planting and breeding model. It has good practical value and promotion prospects.

[0081] It is easy for those skilled in the art to understand that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A field structure for both crop planting and aquaculture, comprising ridges arranged along a circumferential direction, characterized in that: It also includes water storage ditches, planting fields and water storage pits arranged in the area enclosed by the field ridges; The water storage ditch extends along a first direction, and planting fields with planting surfaces lower than the ridges are respectively arranged on both sides of the water storage ditch in a width direction; The water storage pit is arranged on one side of the two planting fields along the first direction, has a width greater than that of the water storage ditch, and is connected to one end of the water storage ditch; the ratio of the sum of the land areas of the water storage ditch and the water storage pit to the sum of the land areas of the two planting fields is 1:9 to 1:19; and The water storage pit stores water of a certain depth, and a net cage with a top opening and used for breeding leeches is floating in the water, and at least one floating bracket used for absorbing snails is floating on the water surface on one side of the net cage; The net cage comprises a porous box body, the porous box body immersed in water has through holes of 40-100 meshes, and the top of the porous box body is 15-50 cm above the water surface.

2. The field structure for both crop planting and aquaculture according to claim 1, characterized in that: At least one wetted bridging piece is provided between the floating support and the net cage; One end of the bridging piece is connected to the floating support, and the other end of the bridging piece is slanted upward or connected to the top of the net cage.

3. The field structure for both crop planting and aquaculture according to claim 2, characterized in that: The bridging member is a thick rope with one end connected to the floating support and the other end passing over the top of the net cage and hanging down into the water inside the net cage; or The lap joint is a split bamboo piece, one end of which is connected to the floating support, and the other end is placed or connected to the top of the net box; and a water-absorbing material is axially extended on the inner wall surface of the bamboo piece, so that at least one end of the water-absorbing material is always immersed in water.

4. The field structure for both crop planting and aquaculture according to any one of claims 1 to 3, characterized in that: The floating support is formed by tying up a plurality of floating rods, and a continuously extending groove is formed on one side of each floating rod immersed in water.

5. The field structure for both crop planting and aquaculture according to any one of claims 1 to 3, characterized in that: The depth of the water storage pit is greater than the depth of the water storage ditch; and The bottom of the water storage ditch is 0.8-1.2 m lower than the planting surface of the planting field; the bottom of the water storage pit is 1.0-1.4 m lower than the planting surface of the planting field.

6. The field structure for combining crop planting and aquaculture according to claim 5, characterized in that: The length of the water storage pit in the first direction is 6-10 m; and / or the width of the water storage ditch is 2-3 m.

7. The field structure for both crop planting and aquaculture according to claim 5, characterized in that: The ridge is 0.5-1.0m higher than the planting surface of the planting field.

8. The field structure for both crop planting and aquaculture according to any one of claims 1 to 3, 6 and 7, characterized in that: A middle partition is provided in the middle of the net cage; The middle partition extends along the length direction of the porous box, and its two sides in the width direction are respectively connected to the inner wall surface of the porous box, and its two ends in the length direction are respectively spaced a certain distance from the inner wall surface of the porous box; The middle partition is provided with a plurality of through holes which are arranged at intervals and have an inner diameter of 4 to 6 cm, and a water scaffolding which is completely immersed in water is arranged above the middle partition.

9. The field structure for combining crop planting and aquaculture according to claim 8, characterized in that: The water-entering scaffold is formed by stacking and binding plant branches.

10. The field structure for both crop planting and aquaculture according to any one of claims 1 to 3, 6, 7 and 9, characterized in that: The top ring of the porous box body is provided with a top convex edge which protrudes upward and inward.

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