CN202958477U - Nursery pond construction structure capable of improving nursery yield of procambarus clarkii - Google Patents

Abstract

The utility model relates to a nursery pond construction structure capable of increasing the seedling output of Procambarus clarkii, which includes setting special soil ridges for breeding in the Procambarus clarkii nursery ponds, and drilling several holes on the slope of the soil ridges for broodstock Breeding nests; pipes are inserted in the burrows, the orifices of which are flush with the slope of the ridge. The slope ratio of the soil ridge slope is 2-4:1; the pipeline is provided with pipeline holes; the distance between the caves is 10-50 centimeters. The utility model adopts artificial shrimp nests to raise seedlings, and the density of the nests can be adjusted at will. Increasing the number of artificial nests can increase the stocking amount of brood shrimps, and taking out the pipes in the caves can capture brood shrimps, so the density of brood shrimps and larvae in the nursery pond can be obtained. Effective control is conducive to improving the survival rate of broodstock and larvae and the yield of shrimp seedlings, and improving the efficiency of seedling breeding.

Description

A nursery pond construction structure capable of increasing the yield of Procambarus clarkii nursery

technical field

The utility model relates to a seedling pond construction structure capable of increasing the seedling output of Procambarus clarkii, in particular to a seedling raising method belonging to freshwater economical shrimps.

Background technique

Procambarus clarkii is native to North America and is commonly known as freshwater crayfish. It belongs to the family Arthropoda, Crustacea, Soft Armada, Decapod, and was brought into my country by the Japanese in 1929. It has been widely distributed in rivers and valleys in my country. In , ponds and major water systems, it has become an important economic species of freshwater aquaculture in my country. Due to the rapid increase in market consumption and export processing of Procambarus clarkii, the number of wild resources is decreasing sharply. Therefore, increasing the production of Procambarus clarkii through artificial breeding has become an important way to meet the needs of processing, export and consumption markets. one of the ways. At present, the seedlings of Procambarus clarkii needed for breeding mainly come from natural waters. With the decline of natural resources, artificial breeding of Procambarus clarkii has become an inevitable trend.

Although domestic Procambarus clarkii farming has formed a certain production scale, several bottlenecks restricting the industrialization of Procambarus clarkii have not been effectively resolved, the most prominent of which is the species required for large-scale farming. The problem of supporting seedlings is mainly manifested in the low efficiency of artificial seedlings, the low survival rate of parental transportation and temporary cultivation, the low yield of seedlings, and poor benefits. Generally, the yield of seedlings in ponds is only tens of thousands per mu, and it is difficult to improve the benefits of seedlings. The low yield of seedlings is related to the low fecundity of Procambarus clarkii, asynchronous spawning, irregular size of shrimp seedlings and high cannibalism rate. At present, the self-propagation and self-breeding shrimp seed breeding method is mostly used in production, or the purchased shrimp seedlings are used for stocking. Due to the low yield of shrimp seedlings and insufficient sources, the increase in stocking density is seriously restricted. Therefore, the current Procambarus clarkii culture production and Benefits are generally low, so how to improve the production of seedlings has become a key issue that the Procambarus clarkii aquaculture industry urgently needs to solve.

Contents of the invention

The purpose of this utility model is to overcome above-mentioned inadequacies, thereby provide a kind of nursery pond construction structure that can improve Procambarus clarkii nursery output, this structure improves nursery pond ecology and adopts by building shrimp nest on the soil ridge of nursery pond The application of the technology of catching large shrimp and keeping small shrimp can improve the survival rate of Procambarus clarkii seedlings, so as to increase the output of shrimp seedlings.

According to the technical scheme provided by the utility model, a nursery pond construction structure capable of improving the production of Procambarus clarkii nursery comprises setting special-purpose soil ridges for breeding in the Procambarus clarkii nursery ponds, and driving several The cave is a nest for broodstock breeding; a pipeline is inserted in the cave, and the nozzle of the pipeline is flush with the slope of the soil ridge.

As a further improvement of the utility model, the height of the ridge is 1.0-1.5 meters, and the slope ratio of the slope of the ridge is 2-4:1.

As a further improvement of the utility model, the pipe is 20-50 centimeters long and 5.0-9.0 centimeters in diameter. The pipeline is provided with pipeline holes, the diameter of the pipeline holes is 1.0-2.0 centimeters, and the distance between the pipeline holes is 1.0-10.0 centimeters.

As a further improvement of the utility model, the caves are in rows of 1-10; the caves have a diameter of 6.0-10 centimeters and a depth of 20-50 centimeters.

As a further improvement of the utility model, the distance between the holes is 10-50 cm.

As a further improvement of the utility model, the pipe is a plastic pipe, a glass fiber pipe or a bamboo pipe.

Compared with the prior art, the utility model has the following advantages:

1. Set up soil ridges in the Procambarus clarkii nursery pond, and build artificial caves on the soil ridges for brood shrimps to live in, which can increase the stocking density and stocking survival rate of brood shrimps; 2. The distribution density of caves can be adjusted at will and the distribution rules can be Avoid overcrowding of broodstock and mutual interference; 3. Take out the pipe in the cave to catch broodstock, which saves labor and effort and has high fishing efficiency; 4. The density of larvae in the nursery pond can be adjusted by adjusting the number of broodstock to reduce The cannibalism rate between shrimp seedlings; 5. After inserting the pipe with holes in the cave, it can avoid the collapse of the soil ridge due to the digging of the broodstock; 6. The pipe with holes is breathable and permeable, and it is easy for the broodstock to climb and inhabit; 7. Planting a variety of aquatic plants in the nursery pond can be used as a shelter for broodstock and shrimp seedlings, and at the same time has the function of improving the ecology, which is conducive to improving the survival rate and seedling output of broodstock shrimp and shrimp seedlings.

Description of drawings

Fig. 1 is the schematic diagram of the artificial cave in the soil ridge in the pond seedling pond of the utility model.

Fig. 2 is a schematic diagram of the pipeline with holes in the cave of the utility model.

Detailed ways

Below the utility model will be further described in conjunction with embodiment:

Embodiment one:

In the Procambarus clarkii nursery pool, the special-purpose soil ridge 1 for breeding is set, and the soil ridge 1 is 1.0 meters high, and the slope ratio of the soil ridge 1 slope is 3: 1, and 5 rows of diameters of 10 centimeters, The depth is the cave 3 of 30 centimeters as the nest of broodstock breeding. The spacing between caves 3 is 20 cm. Insert long 20 centimeters in the cave 3, and diameter is the pipe 5 with holes of 9.0 centimeters, and the nozzle is flush with the slope of the soil ridge. Pipe holes 6 are arranged on the pipe, and the hole diameter on the pipe with holes is 1.0 cm, and the hole spacing is 2.0 cm. Water peanuts are planted along the water level line 2 on the ridge, and Elodea, Hydrilla verticillium, and bitter grass are planted in the pool. The aquatic plants on the ridge cover the artificial nest so that it has good concealment. Put water peanuts, water hyacinths and duckweeds that account for 40% of the water surface in the pool. Aquatic plants 4 are planted at a distance of 0.5 meters, and the coverage rate is 60% of the nursery pond area. Elodea is planted in November, and Hydrilla verticillium is sown in March. The power configuration of the microporous aerator is 2.2 kw per 20 mu. Shrimp seedlings with a body length of 2.0-8.0 cm are caught every day in shrimp cages with a mesh of 1.0 cm.

Embodiment two:

In the Procambarus clarkii nursery pond, special-purpose soil ridges for breeding are set. The height of the ridge is 1.5 meters. Centimeter burrows serve as breeding nests for broodstock. The spacing between the caves is 30 cm. A perforated pipe with a length of 40 cm and a diameter of 7.0 cm is inserted into the cave, and the mouth of the pipe is flush with the slope of the soil ridge. The hole diameter on the perforated pipe is 1.5 cm, and the hole spacing is 1.0 cm.

Water peanuts are planted along the water level on the ridge, and Elodea, Hydrilla verticillium, and bitter grass are planted in the pool. The aquatic plants on the ridge cover the artificial nest so that it has good concealment. Put water peanuts, water hyacinths and duckweeds that account for 60% of the water surface in the pool. Aquatic plants are planted at a distance of 0.5 meters, and the coverage rate is 40% of the nursery pond area. Elodea was planted in March, and Hydrilla verticillium was sown in February. The power configuration of the microporous aerator is 2.2 kw per 15 mu. Catch shrimp with a body length of 2.0-8.0 cm in a shrimp cage every day, and the mesh of the shrimp cage is 1.0 cm

Embodiment three:

In the Procambarus clarkii nursery pond, special-purpose soil ridges for breeding are set. The height of the ridge is 1.5 meters. Centimeter burrows serve as breeding nests for broodstock. The spacing between the caves is 40 cm. A perforated pipe with a length of 35 cm and a diameter of 9.0 cm is inserted into the cave, and the mouth of the pipe is flush with the slope of the soil ridge. The hole diameter on the perforated pipe is 0.8 cm, and the hole spacing is 1.0 cm.

Water peanuts are planted on the ridge above the water level, and Elodea, Hydrilla verticillium, and bitter grass are planted in the pool. The aquatic plants on the ridge cover the artificial nest so that it has good concealment. Put water peanuts, water hyacinths and duckweeds that account for 50% of the water surface in the pool. Aquatic plants are planted at a distance of 0.5 meters, and the coverage rate is 50% of the area of the nursery pool. Elodea was planted in January, and Hydrilla verticillium was sown in March. The power configuration of the microporous aerator is 2.2 kw per 20 mu. Shrimp seedlings with a body length of 2.0-8.0 cm are caught every day in shrimp cages with a mesh of 1.0 cm.

Claims (6)

1. A nursery pond construction structure capable of improving the seedling output of Procambarus clarkii, comprising a nursery pond, characterized in that: an earth bank (1) is set in the nursery pond, and several The first cave (3) is a nest for broodstock breeding; a pipeline (5) is inserted in the cave (3), and the mouth of the pipeline (5) is flush with the slope of the soil ridge. 2. a kind of nursery pond building structure that can improve Procambarus clarkii nursery output as claimed in claim 1 is characterized in that: the high 1.0-1.5 meter of described soil ridge, the slope ratio of soil ridge slope is 2-4: 1. 3. A nursery pond construction structure capable of increasing the production of Procambarus clarkii nursery as claimed in claim 1, characterized in that: the pipeline (5) is 20-50 cm long and 5.0-9.0 cm in diameter; The pipe (5) is provided with pipe holes (6), the diameter of the pipe holes (6) is 1.0-2.0 cm, and the distance between the pipe holes is 1.0-10.0 cm. 4. A kind of nursery pool construction structure capable of improving the production of Procambarus clarkii nursery as claimed in claim 1, characterized in that: the caves (3) are set to 1-10 rows; the diameter of the caves (3) is 6.0-10 cm, depth 20-50 cm. 5 . The construction structure of a nursery pond capable of increasing the production of Procambarus clarkii nursery as claimed in claim 1 , characterized in that: the distance between the caves ( 3 ) is 10-50 cm. 6. A nursery pond construction structure capable of increasing the yield of Procambarus clarkii nursery as claimed in claim 1, characterized in that: the pipe (5) is a plastic pipe, a glass fiber pipe or a bamboo pipe.

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