CN113575481B - Ecological breeding method for saline-alkali soil pond salt pan shrimps by taking fairy shrimp as main natural bait - Google Patents
Ecological breeding method for saline-alkali soil pond salt pan shrimps by taking fairy shrimp as main natural bait Download PDFInfo
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Abstract
The invention relates to an ecological breeding method of brine shrimp in saline-alkali soil pond by taking fairy shrimp as main natural bait. The method comprises the following steps: building a saline-alkali soil pond, cultivating the artemia, domesticating and putting the shrimp seeds in the salt pan, ecologically culturing the shrimps in the salt pan, controlling the density of the shrimps in the salt pan, adding the bait of the shrimps in the salt pan, harvesting the shrimps in the salt pan, and adjusting the water level in autumn and winter. The invention provides a bait foundation for the cultivation and propagation of the fairy shrimp through the adjustment of the water body fertility; by controlling the water depth and the salinity, living space is provided for the cultivation and the propagation of the fairy shrimp; natural and high-quality bait resources are provided for the growth of the shrimps in the salt pan through the cultivation and the propagation of the brine shrimps; the stability of the biological chain in the whole breeding period is ensured by adjusting the fairy shrimp density and the salt pan shrimp density, and the success of the ecological breeding mode is promoted. The invention can promote the high-efficiency utilization of saline-alkali soil resources, keep the diversified development of ecological environment and drive the large-scale development of the salt pan shrimp industry.
Description
Technical Field
The invention relates to a method for breeding salt pan shrimps, in particular to a method for ecologically breeding the salt pan shrimps in a saline-alkali land pond by taking artemia as main natural bait.
Background
Artemia (Eubranchipus vernalis), also known as artemia, is a small crustacean which is distributed worldwide and resistant to high salt, and has become a high-quality biological bait for aquaculture due to the advantages of high astaxanthin content, high protein content, unsaturated fatty acid content higher than saturated fatty acid content, complete biological nutrition and the like. China is one of the countries in the world that produces Toyota insects, wherein the Bohai Bay salt pan-cultivated Toyota insects have high quality, and the mode of artificial stocking in the salt pan is mainly used.
The salt pan shrimp is also called brine shrimp, is a special product of Bohai Bay, is cultured by fully utilizing the characteristic of wide salt adaptability of the south American white prawn, is cultured in a saline-alkali land pond with the salinity of 35 per mill to 60 per mill, and ensures the natural safety of the salt pan shrimp by the unique environment. The salt pan shrimp culture mainly adopts a rough culture mode, the salt pan shrimps and the artemia coexist in the culture water area, the artemia become the main food source of the salt pan shrimps, and other auxiliary biological baits are rotifers, brine maggots, salt algae and the like, so that the wild pure natural characteristics of the salt pan shrimps are ensured. The salt pan shrimp has the following advantages: firstly, because the salinity in the culture water area is higher, other aquatic organisms are difficult to survive, and no enemies such as fishes threatening the survival of shrimps in the salt pan exist; the breeding water area is suitable for breeding the brine shrimp, and the brine shrimp with excellent quality can provide quality guarantee for the breeding of the brine shrimp; and thirdly, because of high survival salinity of the salt pan shrimps, although the growth of the shrimps is relatively slow and the yield is low, the salt pan shrimps cultured by the salt pan shrimps are long in nutrient accumulation period due to natural growth, the meat quality of the cultured salt pan shrimps is tight and tender, the taste of the salt pan shrimps is sweet, and the content of nutrient substances such as protein, astaxanthin, amino acid, EPA, DHA and the like beneficial to the health of a human body is far higher than that of the penaeus vannamei grown in other environments.
At present, the utilization mode of the saline-alkali soil is mainly to dig a pool for fish culture after transformation, the saline-alkali soil is transformed by a comprehensive fish culture technology, after fish culture for a plurality of years, the land can be transformed into the farmland as required after being completely or basically desalinated, but the mode has complex procedures and slow effect, simultaneously changes the resource characteristics and is not beneficial to the diversified development of the ecological environment. Therefore, after standardized transformation of the pond, the saline-alkali land pond resources in an idle state develop ecological breeding of the shrimps in the saline-alkali land pond with the artemia as main natural baits, and the method is an effective way for utilizing the saline-alkali land at present.
Disclosure of Invention
The invention aims to solve the technical problem of providing the ecological breeding method of the brine shrimp in the saline-alkali soil pond by taking the fairy shrimp as the main natural bait.
The technical scheme adopted by the invention for solving the technical problem is as follows:
an ecological breeding method of saline-alkali soil pond salt pan shrimps by taking fairy shrimp as main natural bait is carried out according to the following steps:
(1) Saline-alkali soil pond building: synchronously digging a pool and building a water inlet channel and a water outlet channel which are separately arranged, and arranging a water outlet gate and a water inlet gate; a circular ditch is arranged in the pond, the distance between the circular ditch and the shore is 3m, the width is 7m-8m, the depth is 40cm, and the middle area of the circular ditch is a shoal area;
(2) Cultivation of fairy shrimp
Adjusting the salinity of the pond water body to 55 per thousand, adjusting the water depth of the shoal area to 80cm, and keeping the water depth unchanged; when the water temperature on the surface layer reaches 13 ℃, the water body is adjusted to be light green by utilizing organic fertilizer, algae and fungus preparations; after the water quality condition is stable, breeding the fairy shrimp, putting fairy shrimp eggs with the hatching rate of more than 80% in the whole pool, wherein the specification is 30 ten thousand eggs/g, the putting quantity is 250 g/mu, observing the hatching condition of the fairy shrimp eggs within 7 days, continuously adjusting the water body fertility according to the hatching degree of the fairy shrimp eggs and the fairy shrimp density in the water body, keeping the fairy shrimp density at 3000 per cubic water body, and properly supplementing the fairy shrimp eggs when the density is lower;
(3) Domestication and release of shrimp fries in salt field
After the fairy shrimp is cultivated for one month, the selected Penaeus vannamei P is put into an industrial seedling raising workshop 5 Domesticating the shrimps with salinity from 30 to 55 per mill for more than 10 days; when the water temperature of the pond water body reaches 20 ℃, putting in shrimp seeds with the putting density of 1.5 ten thousand tails/mu, keeping the water depth of the shallow beach area of the pond at 80cm and the salinity of 55 per thousand, continuously adjusting the water body fertility after putting in the shrimp seeds, and ensuring the sufficient baits of the artemia and the shrimp seeds;
(4) Ecological culture of salt pan shrimps
According to the temperature change and the shrimp growth demand, gradually increasing the water depth until the shrimp seedlings are thrown for two months, increasing the water depth of the shallow beach area to 1.4m, and keeping the salinity at 55 per mill; according to the change of water quality conditions, the fairy shrimp density and the shrimp body size, the water body fertility is adjusted to ensure that the fairy shrimp and the salt pan shrimp have sufficient food, the fairy shrimp density is kept at 18000 per cubic water body, living fairy shrimp is supplemented when the density is lower, and the water body fertility is reduced when the density is higher; adjusting the density of the shrimps in the salt pan to be more than 1.2 ten thousand tails/mu;
(5) Brine shrimp density control
Adding exogenous water after the shrimp larvae are put for two months, increasing the water depth of the shallow beach area to 1.6m, and adjusting the salinity to 45 per thousand; regulating the water body fertility, and keeping the fairy shrimp density at 12000 per cubic water body; according to weather conditions and shrimp body sizes, fishing the shrimps in the salt pan in stages, observing the health states of the shrimps, and reducing the shrimp density of the salt pan in the water body of the pond, wherein the average density is controlled to be 5000-8000 shrimps/mu;
(6) Salt pan shrimp bait adding
In the middle and later periods of the salt pan shrimp culture, when the average specification of shrimp bodies reaches 60 tails/kg, fresh and alive adult fairy shrimp is supplemented, the supplement amount is 3 kg/mu per day, frozen fairy shrimp adults are supplemented, and the supplement amount is 1 kg/mu per day;
(7) Harvesting salt pan shrimps
When the average size of the shrimp bodies reaches more than 50 tails/kg, the salt pan shrimps can be harvested gradually according to market quotations until the harvesting is finished;
(8) Water level regulation in autumn and winter
After the pond enters autumn and winter, the water depth of the shallow beach area of the pond is adjusted to 60cm, the salinity of the pond water is kept above 35 per mill, the salinity of the pond water is improved through natural evaporation, and the water quality condition is adjusted to prepare for the cultivation of the artemia in the next year.
The adjustment of the water body fertility in the technical scheme provides a bait foundation for the cultivation and propagation of the fairy shrimp; the control of water depth and salinity provides living space for the cultivation and propagation of the fairy shrimp; the cultivation and the propagation of the brine shrimp provide natural high-quality bait resources for the growth of the brine shrimp; the adjustment of the fairy shrimp density and the salt pan shrimp density ensures the stability of the biological chain in the whole culture period and promotes the success of the ecological culture mode.
The beneficial effects of the invention are summarized as follows:
(1) The method has the advantages that the saline-alkali soil resources are efficiently utilized, the bearing capacity of the water body of the saline-alkali soil pond is fully excavated and utilized, and a new mode for developing and utilizing the saline-alkali soil resources is explored;
(2) The brine resource is recycled, the discharge of the culture tail water is reduced, and the ecological benefit is remarkable;
(3) The method has the advantages that the brine shrimp in the salt pan is ecologically cultured by taking the fairy shrimp as the main natural bait, the culture cost is reduced, the green and healthy culture is realized, and the high-quality brine shrimp product is produced.
(4) The economic benefit, the social benefit and the ecological benefit are remarkable, calculated according to the area of a single pond of 500 mu, the yield per mu of salt field shrimps of 60kg and the average unit price of 44 yuan/kg, the land cost of a saline-alkali land pond of 500 yuan/mu, the pond transformation cost of 300 yuan/mu, the seedling cost of 300 yuan/mu, the bait cost of the fairy shrimp and the like of 80 yuan/mu, the fertilizer cost of 150 yuan/mu, the labor cost of 120 yuan/mu, the water and electricity cost of 120 yuan/mu and the other cost of 70 yuan/mu, the comprehensive cost of 1640 yuan/mu and the pure benefit of 1000 yuan/mu are achieved. Taking 6 ten thousand mu of the popularization area from the salt field of the big clear river to the salt field of the south castle in the Tangshan area as an example, the total value can reach 1.58 million yuan, and the total value of annual economic benefits reaches 0.6 million yuan.
Furthermore, in order to conveniently control the water level and the flow direction of the pond, the length-width ratio of the pond in the step (1) is 3:2, the area of the pond is 500 mu, a water discharge gate and a water inlet gate are respectively arranged in the south and the north, and the width of a water inlet and discharge channel is 5m-6m. .
Further, in order to improve the survival rate of the released shrimp larvae, the step (3) of releasing the shrimp larvae is carried out in a rainy and windless weather, before releasing the shrimp larvae, the temperature of the water body is reduced in a seedling raising workshop, and the temperature difference between the water body and the released water body is not more than 3 ℃.
Drawings
FIG. 1 is a schematic plan view of a saline-alkali land pond structure according to an embodiment of the invention;
FIG. 2 is a schematic diagram of salinity, water depth, water body fertility, brine shrimp density and specification adjustment for an embodiment of the present invention;
in the figure: a sluice 1; a water inlet gate 2; a drain gate 3; a power distribution room 4; a pond bank 5; a buffer area 6; a ring groove 7; a shoal zone 8; a drainage channel 9; an inlet channel 10.
Detailed Description
The invention is described in detail below with reference to the figures and examples, which are only for reference and illustration and do not limit the scope of the invention.
The cultivation area of the embodiment is selected from cultivation bases administered by the modern agricultural park of Huitong province level in Tangshan city and Cao Fei Dian of Hebei province.
Firstly, a culture area with the area of about 500 mu shown in figure 1 is planned by measuring the bottom, water depth, salinity, water body fertility and the like of a saline-alkali soil pond, and a ditch surrounding area and a shoal area are arranged in the culture area.
Secondly, implementing ecological culture of the shrimps in the saline-alkali soil pond salt pan according to the operation flow shown in figure 2.
The specific implementation steps are detailed as follows:
(1) Saline-alkali soil pond construction
The saline-alkali soil pond building needs to be electrified, water-through and passage, the pond digging and the building of irrigation and drainage channels are carried out synchronously, and water inlet and drainage channels are arranged separately. According to the balance relation between the water replenishing quantity and the evaporation capacity, the convenient operation of seed feeding and shrimp fishing, the operability and convenience of pond transformation and other comprehensive factors, the pond has the specification of about 500 mu, the length-width ratio of 3:2, the south and north parts are respectively provided with a drainage gate 3 and a water inlet gate 2, the width of a water inlet channel and a water outlet channel is 5-6 m, and the two ends are provided with water gates 1 so as to control the water level and the flow direction. The annular ditch 7 is arranged in the pond, the distance between the annular ditch 7 and the shore is 3m, the width is 7m-8m, the depth is 40cm, the middle area in the annular ditch 7 is a shoal area 8, the annular ditch 7 is arranged to distinguish the depth and the temperature of water in the annular ditch area and the shoal area 8, and the salt pan shrimps can freely select proper living and foraging spaces in different seasons, different water temperatures and different illumination conditions.
(2) Cultivation of fairy shrimp
3, after ten days in the middle of the month, introducing high-salinity brine from a salt field, adding exogenous water, adjusting the salinity of the pond water body from 35 per thousand to 55 per thousand, adjusting the water depth of 8 parts of the shallow beach area of the pond from 60cm to 80cm, and keeping the water depth unchanged. When the surface water temperature reaches 13 ℃, the water body is adjusted to be light green by utilizing organic fertilizer, algae and fungus preparations. After the water quality condition is stable, the fairy shrimp is cultivated, fairy shrimp eggs with the hatchability of more than 80 percent are thrown into the whole pool, the specification is 30 ten thousand eggs/g, the throwing quantity is 250 g/mu, the hatchability of the fairy shrimp eggs is observed within 7 days after the fairy shrimp eggs are thrown, the fairy shrimp eggs which are flushed to the shore by the pool water are flushed back into the water, the water body fertility is continuously adjusted according to the hatchability of the fairy shrimp eggs and the fairy shrimp density in the water, the fairy shrimp density is kept at 3000 per cubic water, and the fairy shrimp eggs are properly supplemented when the density is lower.
(3) Domestication and putting of shrimp larvae in salt pan
4 in the middle of the month, the selected Penaeus vannamei Boone P is grown in an industrial seedling workshop 5 And (3) performing salinity acclimation on the shrimps, wherein the salinity is acclimated from 30 per mill to 55 per mill, and the acclimation time is longer than 10 days. When the temperature of the water body of the saline-alkali soil pond reaches 20 ℃, the shrimp seeds are thrown in the pond, the water depth of the shallow beach area of the pond is kept at 80cm, and the salinity is 55 per mill. The suitable density of the shrimp larvae is 1.5 ten thousand tails/mu, and before the shrimp larvae are thrown, the temperature of the water body is reduced in a seedling raising workshop, and the temperature difference between the shrimp larvae and the thrown water body is not more than 3 ℃. And after the shrimp seeds are thrown in, the water body fertility is continuously adjusted, and the sufficiency of the baits of the fairy shrimp and the shrimp seeds is ensured.
(4) Ecological culture of salt pan shrimps
After ten days in the middle of 5 months, according to the temperature change and the shrimp growth requirement, the water depth is gradually increased to the beginning of 7 months, the water depth of 8 shallow beach areas is increased to 1.4m, the salinity is kept at about 55 per thousand, sufficient culture water is provided for the salt pan shrimps, and the bearing capacity of the water is ensured. Meanwhile, according to the change of water quality conditions, the fairy shrimp density, the shrimp body size and the like, the water body fertility is adjusted, the food sufficiency of the fairy shrimp and the salt pan shrimp is ensured, the fairy shrimp density is kept about 18000 per cubic water body, the living fairy shrimp is supplemented when the density is lower, and the water body fertility is reduced when the density is higher. And adjusting the density of the shrimps in the salt pan to be more than 1.2 ten thousand tails per mu.
(5) Brine shrimp density control
After 7 months, exogenous water is added, the water depth of the shoal zone 8 is increased to 1.6m, and the salinity is adjusted to about 45 per thousand. The water body fertility is adjusted, and the fairy shrimp density is kept about 12000 per cubic water body. According to weather conditions and shrimp body sizes, the salt pan shrimps are caught in stages, the health states of the shrimp bodies are observed, the density of the salt pan shrimps in the pond water body is reduced, and the average density is controlled to be 5000-8000 tails/mu.
(6) Salt pan shrimp bait adding
After 8 last ten days, when the average specification of the shrimp body reaches 60 tails/kg in the middle and later stages of salt pan shrimp culture, the food intake of the salt pan shrimp is increased, and fairy shrimp needs to be manually put in, so that the salt pan shrimp food is sufficient, the quality and the benefit of the salt pan shrimp are improved, and the salt pan shrimp can be selected according to the market quotation of bait: firstly, the adult live fairy shrimp is supplemented, and the supplement amount is 3 kg/mu every day; and secondly, the frozen product of the fairy shrimp adults is supplemented, and the supplement amount is 1 kg/mu per day. The cost is preferably the lowest.
(7) Harvesting salt pan shrimps
After 8 ten days in the middle of the month, when the average shrimp size reaches more than 50 tail/kg, the salt pan shrimps are harvested gradually according to the market quotation until the harvest is finished at the beginning of 10 months.
(8) Water level regulation in autumn and winter
After 10 middle ten days, the water depth of 8 parts of the shallow beach area of the pond is adjusted to 60cm, the salinity of the pond water is kept above 35 per thousand, the salinity of the pond water is improved through natural evaporation, and the water quality condition is adjusted to prepare for the cultivation of the fairy shrimp in the next year.
This example compares with the traditional extensive culture method of salt pan shrimps (see table 1 and table 2 for details)
Table 1: cultivation cost contrast table (Unit: yuan/mu)
Table 2: culture condition comparison table
Through the culture tests in the embodiment, the ecological culture method of the shrimps in the saline-alkali soil pond by taking the fairy shrimp as the main natural bait is found, the culture benefit is far higher than that of the traditional extensive culture method, the growth environment is unique, and the high-quality bait source enables the shrimps in the saline-alkali soil pond to grow more slowly, the fiber is thicker, and the astaxanthin content is higher, so that the shrimps in the saline-alkali soil pond are stronger in physique, more abundant in vitality, more gorgeous in color, more chewy in taste, more fresh and sweet in aftertaste, and higher in market acceptance of the finished shrimps.
Although the present invention has been described in detail with reference to the preferred embodiments, it should be understood that various modifications and adaptations of the present invention may occur to those skilled in the art without departing from the spirit and scope of the present invention.
Claims (1)
1. The ecological breeding method of the saline-alkali soil pond salt pan shrimps by taking the fairy shrimp as main natural bait is characterized by comprising the following steps:
(1) Saline-alkali soil pond building: synchronously digging a pool and building a water inlet channel and a water outlet channel which are respectively arranged and are provided with a water outlet gate and a water inlet gate; a circular ditch is arranged in the pond, the distance between the circular ditch and the shore is 3m, the width is 7m-8m, the depth is 40cm, and the middle area of the circular ditch is a shoal area; the length-width ratio of the pond is 3:2, the area of the pond is 500 mu, a water inlet gate and a water outlet gate are respectively arranged in the north and south, and the width of a water inlet channel and a water outlet channel is 5m-6m;
(2) Fairy shrimp cultivation
Adjusting the salinity of the pond water body to 55 per thousand, adjusting the water depth of the shallow beach area to 80cm, and keeping the water depth unchanged; when the water temperature on the surface layer reaches 13 ℃, the water body is adjusted to be light green by utilizing organic fertilizer, algae and fungus preparations; after the water quality condition is stable, breeding the fairy shrimp, putting fairy shrimp eggs with the hatching rate of more than 80% in the whole pool, wherein the specification is 30 ten thousand eggs/g, the putting quantity is 250 g/mu, observing the hatching condition of the fairy shrimp eggs within 7 days, continuously adjusting the water body fertility according to the hatching degree of the fairy shrimp eggs and the fairy shrimp density in the water body, keeping the fairy shrimp density at 3000 per cubic water body, and properly supplementing the fairy shrimp eggs when the density is lower;
(3) Domestication and putting of shrimp larvae in salt pan
After the fairy shrimp is cultivated for one month, the selected Penaeus vannamei P is put into an industrial seedling raising workshop 5 Domesticating the shrimps with salinity from 30 to 55 per mill for more than 10 days; when the water temperature of the pond water body reaches 20 ℃, putting the shrimp seeds, wherein the putting density is 1.5 ten thousand tails/mu, the water depth of the pond shallow beach area is kept at 80cm, and the salinity is 55 per thousand, and continuously adjusting the shrimp seeds after putting the shrimp seedsThe water body fertility ensures the sufficiency of the baits of the fairy shrimp and shrimp larvae; the shrimp larvae are thrown in the rainless and windless weather, before the shrimp larvae are thrown in, the temperature of the water body is reduced in a seedling raising workshop, and the temperature difference between the shrimp larvae and the thrown water body is not more than 3 ℃;
(4) Ecological culture of salt pan shrimps
According to the temperature change and the shrimp growth demand, gradually increasing the water depth until the shrimp seedlings are thrown for two months, increasing the water depth of the shallow beach area to 1.4m, and keeping the salinity at 55 per mill; according to the change of water quality conditions, the fairy shrimp density and the shrimp body size, the water body fertility is adjusted to ensure that the fairy shrimp and the salt pan shrimp have sufficient food, the fairy shrimp density is kept at 18000 per cubic water body, living fairy shrimp is supplemented when the density is low, and the water body fertility is reduced when the density is high; adjusting the density of the shrimps in the salt pan to be more than 1.2 ten thousand tails/mu;
(5) Brine shrimp density control
Adding exogenous water after the shrimp larvae are put for two months, increasing the water depth of the shallow beach area to 1.6m, and adjusting the salinity to 45 per thousand; regulating the water body fertility, and keeping the fairy shrimp density at 12000 per cubic water body; according to weather conditions and shrimp body sizes, fishing the shrimps in the salt pan in stages, observing the health states of the shrimps, and reducing the shrimp density of the salt pan in the water body of the pond, wherein the average density is controlled to be 5000-8000 shrimps/mu;
(6) Salt pan shrimp bait adding
In the middle and later periods of the salt pan shrimp culture, when the average specification of shrimp bodies reaches 60 tails/kg, fresh and alive adult fairy shrimp is supplemented, the supplement amount is 3 kg/mu per day, frozen fairy shrimp adults are supplemented, and the supplement amount is 1 kg/mu per day;
(7) Harvesting salt pan shrimps
When the average size of the shrimp bodies reaches more than 50 tails/kg, the salt pan shrimps can be harvested gradually according to market quotations until the harvesting is finished;
(8) Water level regulation in autumn and winter
After the cultivation of the fairy shrimp in autumn and winter, the water depth of the shallow beach area of the pond is adjusted to 60cm, the salinity of the pond water is kept above 35 per mill, the salinity of the pond water is improved through natural evaporation, and the water quality condition is adjusted, so that the cultivation of the fairy shrimp in the next year is prepared.
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