Tail water relay treatment method for fish and rice rotation in pond

Abstract

The invention provides a tail water relay treatment method for fish and rice rotation in a pond. The tail water relay treatment method comprises the following steps: injecting new water into a pond culture area before the beginning of a pond culture period, stocking fish fries, periodically patrolling the pond, measuring water quality, feeding baits, and carrying out fish culture operation; rice is planted in the rice planting area, sowing is conducted in early May, rice transplanting is conducted in mid-to-late May, bottom mud in the pond culture area is used as base fertilizer, and water circulation between the pond culture area and the rice planting area is completed through a first water path system and a second water path system which are arranged between the pond culture area and the rice planting area. By means of in-situ management and control of the water body and ex-situ purification after discharge, the environment of the aquaculture water body is kept stable, discharged tail water is ecologically utilized and treated, up-to-standard discharge is achieved, healthy growth of fishes and reduction of the aquaculture cost are guaranteed, a technical path and support are provided for innovation of an ecological agricultural product production mode, and the method is economical and practical.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of fish-rice rotation, and particularly relates to a tail water relay treatment method for pond fish-rice rotation. BACKGROUND

[0002] Xinjiang is located in the arid and semi-arid region of China, and the spatial and temporal distribution of water resources is highly uneven. The special geographical and climatic conditions have created a unique regional agricultural development model. As a regional characteristic agricultural industry, fishery has long relied on groundwater resources for pond culture. Roughly estimated, the per mu water resource consumption is about 2000m 3 With the economic and social development of our region, the constraints of water resources on various industries are becoming more and more obvious, and the development of fishery, especially the development of pond culture, is facing unprecedented challenges. At the same time, the construction of ecological civilization has always been the requirement of industrial development. As an industry closely related to the water environment, the water environment of aquaculture is related to the healthy growth of the cultured objects and food safety on the one hand, and the negative impact of aquaculture tail water discharge on the surrounding environment has attracted the attention of the whole industry.

[0003] Therefore, a tail water relay treatment method for pond fish-rice rotation is provided. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a tail water relay treatment method for pond fish-rice rotation to solve the problems raised in the background.

[0005] To solve the above technical problems, the technical scheme adopted by the present application is as follows: a tail water relay treatment method for pond fish-rice rotation, comprising the following steps: Before the start of the pond culture period, new water is injected into the pond culture area, fish fry are released, water quality is regularly measured, and feed is regularly fed to carry out fish culture operation; Rice is planted in the rice planting area, and sowing is selected in early May, and transplanting is selected in mid-to-late May. The first waterway system and the second waterway system arranged between the pond culture area and the rice planting area are used to complete the water circulation between the pond culture area and the rice planting area.

[0006] As a further description of the present application, the pond culture area is composed of a culture slope and an intermediate culture area. The slope ratio of the culture slope is 1:2-1:3. A bottom ring ditch with a depth of 0.5m and a width of 0.3m is excavated at the junction of the culture slope and the intermediate culture area. A top ring ditch with a depth of 0.3m and a width of 0.2m is excavated near the top of the culture slope. Geotextile is buried between the bottom ring ditch and the top ring ditch on the culture slope and backfilled and compacted.

[0007] As a further description of the present application, the geotextile is made of HDPE with a thickness of 0.8mm.

[0008] As a further illustration of the present application, the rice planting area is composed of a main planting area and a C-shaped ditch area, and the main planting area and the C-shaped ditch area are separated by ridges.

[0009] As a further illustration of the present application, the C-shaped ditch area is 1.5m-2m wide and 0.5m deep, and the main planting area is divided into multiple planting units with a width of 10±1m by separation ridges, and a ditch mouth is further arranged on the separation ridge between adjacent planting units to increase the flow of water during tail water purification.

[0010] As a further illustration of the present application, the first water system is arranged between the water inlet end of the intermediate breeding area and the C-shaped ditch area, and the second water system is arranged between the water outlet end of the intermediate breeding area and the C-shaped ditch area.

[0011] As a further illustration of the present application, the first water system includes a water inlet pipeline, a water collection well, a water lifting pump and a water delivery pipeline. The water collection well is arranged in the C-shaped ditch area, and the water inlet end of the water collection well is communicated with the main planting area through the water inlet pipeline, and the water collection well further comprises a water lifting pump, and the water in the water collection well is sent into the intermediate breeding area through the water lifting pump and the water delivery pipeline.

[0012] As a further illustration of the present application, the second water system includes a drainage hidden groove, a drainage pipe and a water level limiter. The drainage hidden groove is arranged in the intermediate breeding area, and a net escape prevention device is arranged at the top end of the drainage hidden groove in the intermediate breeding area, and the drainage pipe is arranged in the drainage hidden groove, and the drainage pipe is communicated in the C-shaped ditch area, and a water level limiter is further arranged at the tail end of the drainage pipe.

[0013] As a further illustration of the present application, the diameter of the drainage pipe is 160mm, the wall thickness is greater than 6.0mm, and the nominal pressure is 0.25MPa.

[0014] As a further illustration of the present application, after the rice in the rice planting area is sown and slow-sown, crab species are raised in the C-shaped ditch area, 300-450 crabs are raised per mu, and 5% povidone iodine or salt is used for disinfection before raising.

[0015] Compared with the prior art, the present application has the following advantages: The present application sets a pond breeding area and a rice planting area, achieves efficient water saving in the pond, resource utilization of tail water, and industrial upgrading and efficiency improvement, maintains the stability of the breeding water environment through in-situ control and ex-situ purification of the water body, and realizes standard discharge through ecological utilization and treatment of the discharged tail water, which not only ensures the healthy growth of fish and reduces the breeding cost, but also provides a technical path and support for the innovation of ecological agricultural product production mode, and is economical and practical. Attached Figure Description

[0016] Fig. 1 This is a top view of the layout structure of the pond aquaculture area and the rice planting area in this invention; Fig. 2 This is a schematic diagram of the first waterway system connection structure of the present invention; Fig. 3 This is a schematic diagram of the connection structure of the second waterway system of the present invention.

[0017] Explanation of reference numerals in the attached figures: 1-Pond aquaculture area; 11-Aquaculture slope protection; 12-Intermediate aquaculture area; 2-Rice planting area; 21-Main planting area; 22-C-type ring ditch area; 3-First water system; 31-Inlet pipe; 32-Collection well; 33-Water pump; 34-Water delivery pipe; 4-Second water system; 41-Drainage culvert; 42-Escape prevention net; 43-Drainage pipe; 44-Water level limiter. Detailed Implementation

[0018] To make the technical problems, technical solutions, and beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are only a part of the embodiments of this application, not all of them. The specific embodiments described herein are only used to explain the invention and are not intended to limit the invention. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0019] like Figs. 1-3 As shown, the present invention provides a technical solution: a method for the continuous treatment of tailwater in pond fish-rice rotation, comprising the following steps: The original pond was modified and divided into a pond aquaculture area 1 and a rice planting area 2. Before the start of the pond aquaculture period, new water was injected into pond aquaculture area 1 and fish fry were stocked. Depending on the characteristics of the farmed fish and production needs, a monoculture, polyculture, or single culture mode can be adopted. The pond was inspected regularly, the water quality was measured, and feed was provided. The feeding rate of fish fry should not exceed 5%, the feeding rate of fingerlings should be controlled between 3-5%, and the feeding rate of adult fish should be 2-3%. Fish farming operations were carried out. Rice is planted in rice planting area 2. Sowing is done in early May and transplanting is done in mid-to-late May. The bottom mud of the original pond in rice planting area 2 is used as base fertilizer. The first water system 3 and the second water system 4 set between pond aquaculture area 1 and rice planting area 2 are used to complete the water circulation between pond aquaculture area 1 and rice planting area 2. The area ratio of pond aquaculture area 1 to rice planting area 2 is controlled at 1:0.5-1:1. When the rice field in the rice planting area 2 is sowed and sprouted, the crab seed is raised in the C-shaped ring ditch area 22, 300-450 crabs per mu are raised, and the crab seed is immersed and disinfected with 5% povidone iodine or salt before being raised.

[0020] After the pond culture area 1 and the rice planting area 2 are used for two years, the pond culture area 1 and the rice planting area 2 are exchanged, so that the bottom nutrient salt is consumed and utilized.

[0021] In this embodiment, the pond culture area 1 is composed of a culture slope 11 and an intermediate culture area 12, the depth of the intermediate culture area 12 from the bottom of the pond to the top of the dam is 2.5-3 meters, the bottom of the intermediate culture area 12 is higher at the water inlet end than at the water outlet end, and the bottom of the intermediate culture area 12 has a 0.3% slope from the water inlet to the water outlet, and the bottom is flat, and the thickness of the silt is not more than 10 cm.

[0022] The slope ratio of the culture slope 11 is 1:2-1:3, a bottom ring ditch with a depth of 0.5 m and a width of 0.3 m is excavated at the junction of the culture slope 11 and the intermediate culture area 12, a top ring ditch with a depth of 0.3 m and a width of 0.2 m is excavated near the top of the culture slope 11, and geotextile is buried between the bottom ring ditch and the top ring ditch on the culture slope 11 and backfilled and compacted, the geotextile is made of HDPE with a thickness of 0.8 mm, which improves the stability of the culture slope 11 during use.

[0023] In this embodiment, the rice planting area 2 is composed of a main planting area 21 and a C-shaped ring ditch area 22, and the main planting area 21 and the C-shaped ring ditch area 22 are separated by ridges.

[0024] The C-shaped ring ditch area 22 is 1.5-2 m wide and 0.5 m deep, the main planting area 21 is divided into multiple planting units with a width of 10±1 m by separation ridges, and a channel is also provided on the separation ridge between adjacent planting units to increase the flow of water during tail water purification, and the bottom of the main planting area 21 is generally horizontal without slope.

[0025] As a possible implementation in this embodiment, the first waterway system 3 is arranged between the water inlet end of the intermediate culture area 12 and the C-shaped ring ditch area 22, and the second waterway system 4 is arranged between the water outlet end of the intermediate culture area 12 and the C-shaped ring ditch area 22.

[0026] The first waterway system 3 includes a water inlet pipeline 31, a water collection well 32, a water lifting pump 33 and a water delivery pipeline 34. The water collection well 32 is arranged in the C-shaped ring ditch area 22, and the water inlet end of the water collection well 32 is communicated with the main planting area 21 through the water inlet pipeline 31, and the water collection well 32 is also provided with a water lifting pump 33, and the water in the water collection well 32 is sent into the intermediate culture area 12 through the water lifting pump 33 and the water delivery pipeline 34.

[0027] The second waterway system 4 comprises a drainage channel 41, a drainage pipe 43 and a water level limiter 44, the drainage channel 41 is arranged in the middle culture area 12, and the top end of the drainage channel 41 is provided with an anti-escape net 42 on the middle culture area 12, the drainage pipe 43 is arranged in the drainage channel 41, the drainage pipe 43 is communicated in the C-shaped ring ditch area 22, and the water level limiter 44 is further arranged at the tail end of the drainage pipe 43.

[0028] The diameter of the drainage pipe 43 is 160mm, the wall thickness is greater than 6.0mm, and the nominal pressure is 0.25MPa.

[0029] It should be further explained that the drawings and embodiments of the present application mainly describe and explain the concept of the present application, and on the basis of the concept, the specific forms and settings of some connection relationships, position relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be completely described, but under the premise that the person skilled in the art understands the concept of the present application, the person skilled in the art can realize the above-mentioned specific forms and settings by using the well-known way.

[0030] When an element is referred to as being "fixed to" or "set to" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0031] The terms "inner, outer" refer to the inner and outer of the contour of each component itself, and the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner" or "outer" indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0032] For purposes of the description hereinafter, the terms "upper", "lower", "right", "left", "vertical", "horizontal", "top", "bottom", "lateral", "medial", and derivatives thereof shall relate to the application as it is oriented in the drawing figures. However, it is to be understood that the application can assume various alternative orientations and, accordingly, such terms are not to be taken as limitations of the present application, except where so expressly defined by the patentee. All such modifications and variations of the present application that can be made without departing from the spirit and scope of the present application are considered to be within the scope of the present application.

[0033] The terms "first", "second", etc. are used herein only to describe one entity or action from another, and do not imply or suggest any relative importance or imply the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, and the meaning of "several" is one or more, unless otherwise explicitly and specifically limited.

[0034] It should be noted that the relational terms herein, such as first and second, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof are intended to cover non-exclusive inclusions, so that a process, method, article, or apparatus including a list of elements does not only include those elements, but also includes other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0035] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A method for the continuous treatment of tailwater from a pond-based rice-fish rotation system, characterized in that: Includes the following steps: Before the start of the pond culture period, new water is injected into the pond culture area (1), fish fry are stocked, the pond is inspected regularly, the water quality is measured, and feed is provided to carry out fish culture operations. Rice is planted in the rice planting area (2), and sowing is carried out in early May and transplanting is carried out in mid-to-late May. The first water system (3) and the second water system (4) set between the pond aquaculture area (1) and the rice planting area (2) are used to complete the water circulation between the pond aquaculture area (1) and the rice planting area (2).

2. The method for continuous treatment of tailwater in a pond-based rice-fish rotation system according to claim 1, characterized in that, The pond aquaculture area (1) consists of an aquaculture slope (11) and an intermediate aquaculture area (12). The slope ratio of the aquaculture slope (11) is 1:2 to 1:

3. A bottom ring ditch with a depth of 0.5m and a width of 0.3m is excavated at the junction of the aquaculture slope (11) and the intermediate aquaculture area (12). A top ring ditch with a depth of 0.3m and a width of 0.2m is excavated near the top of the slope of the aquaculture slope (11). Geotextile is buried between the bottom ring ditch and the top ring ditch on the aquaculture slope (11) and backfilled and compacted.

3. The method for the continuous treatment of tailwater in a pond-based rice-fish rotation system according to claim 2, characterized in that, The geotextile is made of HDPE with a thickness of 0.8 mm.

4. The method for continuous treatment of tailwater in a pond-based rice-fish rotation system according to claim 2, characterized in that, The rice planting area (2) consists of a main planting area (21) and a C-shaped ring ditch area (22), which are separated by ridging.

5. A method for the continuous treatment of tailwater in a pond-based rice-fish rotation system according to claim 4, characterized in that, The C-shaped ring ditch area (22) is 1.5m-2m wide and 0.5m deep. The main planting area (21) is divided into multiple planting units with a width of 10±1m by dividing ridges. The dividing ridges between adjacent planting units are also equipped with channel openings to increase the flow of water during tailwater purification.

6. The method for consecutive treatment of tailwater in a pond-based rice-fish rotation system according to claim 4, characterized in that, The first water system (3) is located between the water inlet of the intermediate aquaculture zone (12) and the C-shaped ring ditch zone (22), and the second water system (4) is located between the drainage end of the intermediate aquaculture zone (12) and the C-shaped ring ditch zone (22).

7. A method for the continuous treatment of tailwater in a pond-based rice-fish rotation system according to claim 6, characterized in that, The first water system (3) includes an inlet pipe (31), a collection well (32), a water pump (33), and a delivery pipe (34). The water collection well (32) is located in the C-shaped ring ditch area (22), and the water inlet of the water collection well (32) is connected to the main planting area (21) through the water inlet pipe (31). The water collection well (32) is also equipped with a water pump (33), and the water in the water collection well (32) is sent into the intermediate breeding area (12) through the water pump (33) and the water delivery pipe (34).

8. A method for the continuous treatment of tailwater in a pond-based rice-fish rotation system according to claim 6, characterized in that, The second water system (4) includes a drainage trough (41), a drainage pipe (43) and a water level limiter (44). The drainage ditch (41) is set in the intermediate breeding area (12), and an escape-proof net (42) is set at the top of the drainage ditch (41) in the intermediate breeding area (12). A drainage pipe (43) is set in the drainage ditch (41), and the drainage pipe (43) is connected to the C-shaped ring ditch area (22). A water level limiter (44) is also set at the tail end of the drainage pipe (43).

9. A method for the continuous treatment of tailwater in a pond-based rice-fish rotation system according to claim 8, characterized in that, The drain pipe (43) has a diameter of 160 mm, a wall thickness of more than 6.0 mm, and a nominal pressure of 0.25 MPa.

10. A method for the continuous treatment of tailwater in a pond-based rice-fish rotation system according to claim 1, characterized in that, After the rice seedlings are sown and slow-released in the rice paddy in the rice planting area (2), crab seedlings are released in the C-shaped ring ditch area (22). 300-450 crab seedlings are released per mu. Before releasing, the crabs are disinfected by soaking in 5% povidone-iodine or salt water.

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