CN-119111429-B - Device for breeding eels in paddy field

CN119111429BCN 119111429 BCN119111429 BCN 119111429BCN-119111429-B

Abstract

The invention discloses a device for breeding eels in a paddy field, which comprises an annular groove, a plurality of eel nests and a multifunctional box, wherein the annular groove is arranged between a ridge and a small ridge around the paddy field, the eel nests are arranged in the annular groove, the multifunctional box is arranged on the ridge around the paddy field, the multifunctional box is used for conveying required bait, water and air to the eel nests through a main pipeline, the eel nest comprises a nest body, 2S-shaped outlet structures and nest pipes, the nest body is of a flat tubular structure, the cultured eels can be freely turned around in the nest body, the 2S-shaped outlet structures are respectively connected to two ends of the nest body, the nest pipes are perpendicular to the nest body, one end of each nest pipe is communicated with the nest body, and the other end of each nest pipe is connected with the main pipeline.

Inventors

LI BING
ZHU JIAN
HE JIE
JIA RUI
Hou Dairan
ZHOU LINJUN

Assignees

中国水产科学研究院淡水渔业研究中心

Dates

Publication Date: 20260512
Application Date: 20241011

Claims (5)

1. The device for cultivating eels in the paddy field is characterized by comprising an annular groove (4), a plurality of eel nests (8) and a multifunctional box (7), wherein the annular groove (4) is arranged between a ridge (2) and a small ridge (3) around the paddy field (1), the eel nests (8) are arranged in the annular groove (4), the multifunctional box (7) is arranged on the ridge (2) around the paddy field (1), and the multifunctional box (7) is used for conveying required bait, water and air to the eel nests (8) through a main pipeline (6); The eel nest (8) comprises a nest body (8-1), 2S-shaped outlet structures (8-2) and nest pipes (8-3), wherein the nest body (8-1) is of a flat tubular structure, farmed eels can freely turn around and turn around in the nest body (8-1), the 2S-shaped outlet structures (8-2) are respectively connected to two ends of the nest body (8-1), the S-shaped outlet structures (8-2) are of a horn-shaped structure, the S-shaped outlet structures (8-2) comprise a curved neck structure (8-4) and a curved circular pipe structure (8-5) which are connected with each other, the curved neck structure (8-4) is connected with the nest body (8-1), floating gates (8-7) are arranged at openings (8-6) of the curved circular pipe structure (8-5), the cross section size of each floating gate (8-7) is larger than that of small ridges (3) around the rice field (1), and the cross section size of each pipe (8-3) is perpendicular to the other and is connected with one end (8-1) of the main pipe (8-3); The multifunctional box (7) comprises a base (7-1), an air pump (7-2), a discharging hopper (7-3), a discharging valve (7-5), a barometer (7-4), a branch pipeline (7-6) and a pressure regulating valve (7-7), wherein the air pump (7-2) is fixed on the base (7-1), the air pump (7-2), the discharging hopper (7-3) and the barometer (7-4) are connected on the main pipeline (6), the discharging valve (7-5) is arranged at the bottom of the discharging hopper (7-3), the main pipeline (6) is connected with the branch pipeline (7-6), and the pressure regulating valve (7-7) is arranged on the branch pipeline (7-6).
2. The rice field eel culturing apparatus according to claim 1, wherein the nest body (8-1) has a thickness of 5-10 cm and a length of 30-80 cm.
3. A rice field eel raising apparatus according to claim 1, wherein the curved neck structure (8-4) has a flat structure on the side facing the nest (8-1).
4. The device for rice field eel breeding according to claim 1, wherein the barometer comprises an air duct (7-41), an air-liquid tank (7-42), a liquid guide tube (7-43), a scale column (7-44), a pressure regulating bag (7-45) and an air pressure valve (7-46), wherein one end of the air duct (7-41) is connected to the left upper part of the air-liquid tank (7-42), the other end of the air duct (7-41) is connected to the main pipeline (6), the air pressure valve (7-46) is arranged on the air duct (7-41), the liquid guide tube (7-43) is connected to the right bottom of the air-liquid tank (7-42), the scale column (7-44) is arranged on the upper part of the liquid guide tube (7-43), and the pressure regulating bag (7-45) is connected to the top of the scale column (7-44); The main pipeline (6) is used for compressing air into the air-liquid tank (7-42) through the air guide pipe (7-41), so that liquid in the air-liquid tank (7-42) is pressed into the scale column (7-44) through the liquid guide pipe (7-43) at the bottom of the main pipeline, the pressure regulating bag (7-45) connected with the top of the scale column (7-44) is used for discharging air pressure above the scale column (7-44), and the pressure regulating valve (7-7) is regulated according to the water depth below the water surface of the rice field (1) where the eel nest is located, so that the water depth where the eel nest (8) is located is grown on the horizontal plane in the scale column (7-44).
5. The device for raising eel in rice field according to claim 4, wherein the liquid guiding tube (7-43) has an L-shaped structure.

Description

Device for breeding eels in paddy field Technical Field The invention belongs to the technical field of eel breeding, and particularly relates to a device for breeding eels in a paddy field. Background Finless eels are widely distributed in China and have the habit of spring hibernation. When the water temperature of the habitat is reduced to below 10 ℃, finless eels can hide into the cave and spend winter, and when the water temperature is increased to above 13 ℃ in spring and summer, the finless eels can leave the cave to find food. Finless eels belong to the carnivorous fishes, foods comprise insects and larvae thereof, small fishes and roes, crustaceans such as shrimps, cladocera, copepods and the like can also prey on some tadpoles and young frogs, and even ingest part of organic chips and phytoplankton as food sources. Finless eel predation mainly depends on more developed smell and touch. The finless eel is fierce and has strong aggressiveness when predating, can be widely opened, and can swallow larger food. Finless eels have a daytime and nocturnal habit. During the day, it usually resides in the cavity, exposing only the head or nose to the cavity, waiting for an opportunity to predate. At night, people can actively swim out of the cave to move and find food. The finless eel can breathe air directly by taking the epidermis of the inner wall of the oral cavity and the laryngeal cavity as an auxiliary respiratory organ, and can survive in silt or moist soil. The finless eels have the capability of searching suitable living environments, and the suitable environments can promote the growth of finless eels. Under the condition of artificial cultivation, compound feed, mussel meat, earthworms, fly maggots, small trash fish, animal viscera and the like are fed. The environment of the traditional ecological rice field can meet the growth and development requirements of finless eels, the rice can keep the water quality fresh, and a plurality of natural baits for finless eels are bred in the rice field, so that a plurality of finless eels exist in the rice field and are also important sources for wild fishing. Due to the improvement of the modern rice planting method, the rice field environment is changed, and the rice field is not suitable for the growth of finless eels, such as the large-scale use of pesticides and fertilizers, the wild animals in the rice field are reduced, the cavities are reduced, the soil is hardened, the finless eels are fewer and fewer, and even the finless eels are out of track. When eel fries are artificially bred in the paddy field, a great amount of risks exist because the holes can not be found temporarily due to weak hole punching capability, so that the survival rate is greatly reduced. Rice field eel breeding is faced with serious challenges, and the direct seedling cultivation method in the rice field and rice planting are often not compatible, so that further improvement is needed. Disclosure of Invention The invention provides a device for cultivating eels in a paddy field, which can solve the defects of difficult hole punching and pesticide and chemical fertilizer hazard of the eels cultivated in the paddy field. In order to solve the problems, the technical scheme provided by the invention is as follows: The embodiment of the invention provides a device for breeding eels in a paddy field, which comprises an annular groove (4), a plurality of eel nests (8) and a multifunctional box (7), wherein the annular groove (4) is arranged between a ridge (2) and a small ridge (3) around the paddy field (1), the eel nests (8) are arranged in the annular groove (4), and the multifunctional box (7) is arranged on the ridge (2) around the paddy field (1), and the multifunctional box (7) is used for conveying needed bait foods, water and air to the eel nests (8) through a main pipeline (6); The eel nest (8) comprises a nest body (8-1), 2S-shaped outlet structures (8-2) and nest pipes (8-3), wherein the nest body (8-1) is of a flat tubular structure, farmed eels can freely turn around and turn around in the nest body (8-1), the 2S-shaped outlet structures (8-2) are respectively connected to two ends of the nest body (8-1), the S-shaped outlet structures (8-2) are of a horn-shaped structure, the S-shaped outlet structures (8-2) comprise curved neck structures (8-4) and curved circular pipe structures (8-5) which are connected with each other, the curved neck structures (8-4) are connected with the nest body (8-1), floating gates (8-7) are arranged at openings (8-6) of the curved circular pipe structures (8-5), the cross section size of each floating gate (8-7) is larger than that of small ridges (3) around the rice field (1), and the cross section size of each small ridge (5) is larger than that of each other, and the curved circular pipe structures (8-4) are perpendicular to the main pipe structures (8-1) and are connected with one end of the main pipe structures (8-1). According to an