CN104351144A - Leech larva culture device and larva culture method - Google Patents

Abstract

The present invention relates to a leech emergence cultivation device and emergence cultivation method, comprising: a seedling pond, an aerator installed in the seedling pond and a bed floating in the seedling pond, characterized in that the surface of the inner wall of the seedling pond is Smooth, the edge of the pool mouth on the upper part of the nursery pool is provided with a cover edge, the cover edge surrounds the pool mouth for a week, the width of the cover edge extends to the inside of the nursery pool for a certain distance, and leech eggs are placed on the nursery bed , and cover the leech eggs with a damp cloth. The nursery bed used in the present invention floats in the nursery pool, and at the same time uses mesh cloth and wet cloth to pave and cover, which can ensure a high emergence rate of seedlings, and can also stabilize the emergence rate within a precise range, while the cover edge is smooth and smooth. The inner wall of the nursery pond also ensures a high survival rate of seedlings, and the cover edge ensures that the seedlings will not climb out of the nursery pond, resulting in a loss in the number of seedlings.

Description

Leech emergence cultivation device and emergence cultivation method

technical field

The invention relates to a leech breeding technology, in particular to a leech emergence cultivation device and a method for emergence cultivation.

Background technique

Leech, commonly known as leech, grows and reproduces in inland freshwater waters. It is a traditional special medicinal aquatic animal in my country. Its dried products are processed and used in traditional Chinese medicine. With the abuse of pesticides and chemical fertilizers produced by the development of modern society, and the pollution of the environment by industry and agriculture, wild natural resources have declined sharply. With the in-depth development of the medicinal value of leeches, their market demand potential is huge. Mainly, the factory farming of leeches is a historical pioneering work.

After the leech eggs pass through the artificial temperature, they need to break out of their shells and emerge for intensive cultivation. Usually, there are about 30 seedlings in one leech egg, and about 800 eggs in a kilogram of eggs. The hatched seedlings will easily grow from Climbing out of the nursery pool is not easy to manage. At the same time, the seedlings need to be counted during the sales process. It is a technical problem for seedling manufacturers to estimate a more accurate number of seedlings in the same nursery pool. However, because of the seedling survival rate Difficult to control, estimated quantities cannot be achieved precisely.

Contents of the invention

The invention overcomes the deficiencies of the prior art, and provides a cultivation device for better controlling the number range of emergence of leeches and a method for cultivating emergence using the device.

In order to achieve the above-mentioned purpose, a kind of technical scheme that the present invention adopts is: a kind of leech emergence cultivation device and emergence cultivation method, comprising: nursery pond, the aerator that is arranged in the described nursery pond and the leech that floats in the described nursery pond The bed is characterized in that the surface of the inner wall of the nursery pool is smooth, and the edge of the pool mouth at the upper part of the nursery pool is provided with a cover edge, and the cover edge surrounds the pool mouth for a week, and the width of the cover edge extends to the inside of the nursery pool At a certain distance, leech eggs are placed on the breeding bed, and a damp cloth is used to cover the leech eggs.

In a preferred embodiment of the present invention, the inner wall of the seedling pond built with cement is pasted with marble slabs, and the surface of the marble slabs is smooth.

In a preferred embodiment of the present invention, the breeding bed is a foam board covered with a layer of mesh cloth, and the leech eggs covered with a wet cloth are placed on the mesh cloth, and the center of the foam board is provided with a downward recess. The bowl-shaped structure, the mesh cloth is placed close to the bowl-shaped structure.

In a preferred embodiment of the present invention, the wet cloth is made of cotton cloth, and the aperture of the mesh cloth is 0.5 cm.

In a preferred embodiment of the present invention, the length of the nursery pond is 8m and the width is 2m, and the width of the cover extending toward the inside of the nursery pond is 5-10cm.

In a preferred embodiment of the present invention, the angle between the edge of the cover and the side of the nursery pool is 10-90°.

In a preferred embodiment of the present invention, a constant temperature device is provided in the seedling pond, or the external environment where the seedling pond is located is provided with a constant temperature device, and the constant temperature device can keep the water temperature in the seedling pond within a predetermined temperature range .

Another technical solution adopted in the present invention is: a method for cultivating seedlings using a device for cultivating leeches, characterized in that it comprises the following steps:

(1) Inject warm water for seedlings into the seedling pond, and turn on the aerator to increase oxygen for the seedling pond;

(2) Weigh the leech eggs with a predetermined weight, place them on the mesh cloth of the breeding bed, and then cover the leech eggs with a damp cloth, and wait for the leeches to break their shells;

(3) After all the leeches have broken their shells, fold the mesh, collect the eggshells and clean them out of the nursery pool;

(4) Transfer all the leech seedlings hatched and emerged from the nursery pond out of the nursery pond, turn off the aerator, and pack the leech seedlings with oxygen.

In a preferred embodiment of the present invention, the warm water in step (1) is 20-25 degrees Celsius.

The present invention solves the defects in the background technology. The bed used in the present invention floats in the seedling pond, and mesh cloth and wet cloth are used for bedding and covering at the same time, which can ensure a higher seedling emergence rate and stabilize the seedling emergence rate. Within a precise range, at the same time, the cover edge and the smooth inner wall of the nursery pond also ensure a high seedling survival rate. The cover edge ensures that the seedlings will not climb out of the nursery pond, resulting in a loss in the number of seedlings.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is the three-dimensional structure diagram of the preferred embodiment of the present invention;

Fig. 2 is the nursery bed structural diagram that has mesh cloth of preferred embodiment of the present invention;

Fig. 3 is a schematic diagram of the bed structure with mesh cloth and leech eggs of a preferred embodiment of the present invention;

Among the figure: 1, nursery pool, 2, cover edge, 3, breeding bed, 4, foam board, 5, bowl-shaped structure, 6, mesh cloth, 7, leech eggs, 8, wet cloth.

Detailed ways

The present invention will now be further described in detail in conjunction with the accompanying drawings and embodiments. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present invention in a schematic manner, so it only shows the composition related to the present invention.

As shown in Fig. 1, Fig. 2, Fig. 3, a kind of leech emergence cultivation device comprises: nursery pond 1, the aerator that is arranged in the nursery pond 1 and the nursery bed 3 floating in the nursery pond 1, the nursery pond 1 The surface of the inner wall is smooth, and the edge of the mouth of the nursery pool 1 is provided with a cover edge 2, and the cover edge 2 surrounds the mouth of the pool for a week, and the width of the cover edge 2 extends to a certain distance inside the nursery pool 1, and leech eggs 7 are placed on the nursery bed 3, and Adopt wet cloth 8 to cover on the leech eggs 7 .

Cultivation bed 3 floats in nursery pool 1, provides an optimal temperature and humidity environment for leech seedlings, the water at the bottom of the cultivation bed 3 provides the best incubation temperature, above the water surface and the covering of wet cloth 8 provides an optimal humidity environment, At the same time, the humid environment can stimulate the hatching and shell breaking of leech seedlings.

The structure of the cover edge 2 can prevent the leech seedlings crawling upwards from the mouth of the nursery pool 1, and prevent the leech seedlings from climbing out of the nursery pool 1. When the seedlings climb to the edge of the cover edge 2, they will fall from the cover edge 2 due to the angle. In the water of nursery pond 1.

The smooth inner wall of the nursery pool 1 can facilitate the cleaning of the nursery pool 1, or the nursery pool 1 can be disinfected and cleaned.

The seedling pond 1 inwall of cement stacking is pasted with marble slab, and the surface of marble slab is smooth. Marble slab material is natural, harmless to leech seedlings, cleaning and disinfection nursery pond 1 simultaneously, and marble slab is also comparatively durable.

The breeding bed 3 is a foam board 4, and a layer of mesh cloth 6 is laid on the foam board 4, and the leech eggs 7 covered with a wet cloth 8 are placed on the mesh cloth 6, and the center of the foam board 4 is provided with a downwardly concave bowl-shaped structure 5 , the mesh cloth 6 is laid close to the bowl-shaped structure 5 . The foam board 4 can float in sleep and provide a better hatching environment for the leech seedlings at the same time. After the leech seedlings hatch and break their shells and emerge, they can easily climb to the water in the nursery pool 1 along the foam board 4 to increase the emergence rate.

Wet cloth 8 is cotton cloth material, and the wet cloth 8 of face material covers leech egg 7, and natural fiber has better affinity, and mesh cloth 6 aperture is 0.5cm, and the aperture size of mesh cloth 6 can fit the size of leech egg 7, stacks on Eggs on the mesh cloth 6 are not easy to slide because of the mesh, which can make the leech eggs 7 pile up into a higher pile, providing a better hatching environment, and the leech eggs 7 stacked together are conducive to hatching.

The length of the nursery pond 1 is 8m and the width is 2m. The size of the nursery pond 1 can reasonably control the number of leech seedlings hatched together in the nursery pond 1, which is conducive to the counting when the later stage is sold. Cover is 5-10cm along 2 and stretches to the width of nursery pond 1 inboard. Such width has less impact on the size of the mouth of the pond, and leeches are not easy to climb out of the nursery pond 1 over the cover edge 2 simultaneously.

The angle between the cover edge 2 and the nursery pool 1 side is 10-90 °, such angle leech seedlings cannot cross the cover edge 2. The nursery pond 1 is provided with a constant temperature device, or the external environment where the nursery pond 1 is located is provided with a constant temperature device, and the constant temperature device can keep the water temperature in the nursery pond 1 within a predetermined temperature range. The constant temperature device is a steam heating device of a boiler or regulates the temperature of the nursery pond 1 by feeding warm water. At the same time, the air conditioner can also be used to regulate the temperature of the greenhouse where the seedling pond 1 is located to ensure the temperature in the seedling pond 1 .

A kind of emergence cultivation method that uses leech emergence cultivation device, comprises the following steps:

(1) Inject warm water for seedlings into the nursery pool 1, and turn on the aerator to increase oxygen for the nursery pool 1;

(2) Weigh the leech egg 7 of predetermined weight, place it on the mesh cloth 6 of the breeding bed 3, and then cover the leech egg 7 with a wet cloth 8, and wait for the leech to break the shell;

(3) After all the leeches have broken their shells, fold the mesh cloth 6, collect the eggshells and clean them out of the nursery pool 1;

(4) Transfer all the leech seedlings hatched and emerged from the nursery pond 1 out of the nursery pond 1, turn off the aerator, and pack the leech seedlings with oxygen.

The warm water in step (1) is 20-25 degrees Celsius, preferably 23 degrees Celsius. At this temperature, the hatching and emergence of leech eggs 7 is the best.

The above is inspired by the ideal embodiment of the present invention. Through the above description, relevant personnel can make various changes and modifications within the scope of not departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, and must be determined according to the scope of the claims.

Claims (9)

1. a leech emerges breeding arrangement, comprise: nursery pond, be arranged on the aerator in described nursery pond and swim in and educate bed in described nursery pond, it is characterized in that, described nursery pond inner wall surface is smooth, the Chi Kou edge on described nursery pond top is provided with cover rim, and described cover rim was around described pond mouth one week, and the width of described cover rim extends a segment distance inside described nursery pond, described educating on bed is placed with leech egg ovum, and adopts wet cloth to cover on leech egg ovum.

2. leech according to claim 1 emerges breeding arrangement, it is characterized in that: the described nursery pond inwall that cement is piled up posts marble slab, the smooth surface of described marble slab.

3. leech according to claim 1 and 2 emerges breeding arrangement, it is characterized in that: described in educate bed be cystosepiment, cystosepiment is covered with one deck screen cloth, the leech egg ovum being coated with wet cloth is placed on screen cloth, described cystosepiment center is provided with recessed bowl structure downwards, and described bowl structure lay is close to by described screen cloth.

4. leech according to claim 3 emerges breeding arrangement, and it is characterized in that: described wet cloth is cotton material, described screen cloth aperture is 0.5cm.

5. leech according to claim 1 emerges breeding arrangement, it is characterized in that: the length of described nursery pond be 8m, wide be 2m, the described cover rim width stretched to inside described nursery pond is 5-10cm.

6. leech according to claim 1 emerges breeding arrangement, it is characterized in that: between described cover rim and described nursery pond side, angle is 10-90 °.

7. leech according to claim 1 emerges breeding arrangement, it is characterized in that: in described nursery pond, be provided with thermostat, or the external environment condition at described nursery pond place is provided with thermostat, the water temperature in described nursery pond can remain in predetermined temperature range by described thermostat.

8. what use the leech described in claim 1 to emerge breeding arrangement goes out a seeding cultivating method, it is characterized in that, comprises the following steps:

(1) in described nursery pond, inject the warm water of nursery, opening aerator is nursery pond oxygenation;

(2) take the leech egg ovum of predetermined weight, be placed on and educate on the screen cloth of bed, then cover leech egg ovum with wet cloth, treat leech broken shell;

(3), after the whole broken shell of leech, folding screen cloth once, collects eggshell and cleans out nursery pond;

(4) the leech seedling after hatching in nursery pond being emerged all migrates out nursery pond, closes aerator, the oxygenation of leech seedling is packed.

9. leech according to claim 8 goes out seeding cultivating method, it is characterized in that: the warm water described in step (1) is 20-25degree Celsius.