CN106962171B - Industrial integrated system and technical method for culturing laver - Google Patents
Industrial integrated system and technical method for culturing laver Download PDFInfo
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Abstract
An industrial integrated system and a technical method for culturing laver, which belong to the technical field of agriculture, forestry, animal husbandry and fishery, and the technical field of aquaculture, in particular to the technical field of marine algae culture. The integrated system comprises nine systems, namely a production plant, a culture pond, a culture net, illumination, air flow, air temperature and humidity, culture water storage and purification, culture water temperature and water flow, culture water salinity and nutrient salt and culture water carbon oxygen pH value; by adopting the technical method provided by the invention, the equipment of each system is controlled at different time periods to reach the set technical parameters, so that the laver can be cultured in an industrial system which is not an open sea area. The system and the technical method are used for culturing the laver, so that the yield of the laver is increased, the quality of the laver is improved, the labor condition of workers is improved, and a new method different from the traditional laver culture and other marine algae culture is created.
Description
Technical Field
The invention relates to an industrial integrated system and a technical method for culturing laver, belonging to the fields of agriculture, forestry, animal husbandry and fishery industry, aquaculture technology, and particularly the technical field of marine algae culture.
Background
The laver is a general term for marine algae of Porphyra of Rhodophytaceae, and includes Porphyra yezoensis, Porphyra haitanensis, Porphyra tenera, Porphyra rotundus, Porphyra haitanensis, etc., and the varieties widely cultivated at present are Porphyra yezoensis, Porphyra haitanensis, and Porphyra tenera.
The laver is nutritious, and according to different growth periods, the protein content of each 100g of dried laver is 35-50%, the polysaccharide content is about 25%, the oil content is about 3%, and the oil component in the laver is mainly polyunsaturated fatty acid. Particularly, the laver also contains a special amino acid, namely taurine, which is not contained in any land plants, and the content of the taurine in the laver is about 1 percent, and is even higher than that of a plurality of marine animals.
At present, the laver is cultivated in open sea all over the world, and the cultivation mode is to hang nets on struts erected in seawater sludge, or hang nets on raft frames floating in seawater, or hang nets on raft frames semi-floating in seawater for cultivation.
The laver cultivation season is finished from 10 middle ten days of the year to 4 middle ten days of the year, the temperature of seawater is increased due to temperature change, and the laver cannot grow continuously in the natural environment after 4 middle ten days of the month. In recent years, the yield and the quality of the laver are in a descending trend due to the influences of factors such as abnormal seawater temperature, aggravation of seawater pollution, degeneration of laver seedlings, overlarge culture density, aggravation of ocean development and the like.
Particularly in the 2016 to 2017 culture seasons, gulfweed outbreaks occur in salt cities and south China areas of main laver culture areas due to serious seawater pollution, aggravated ocean development activities and other factors, so that laver in the two areas is completely harvested, and the loss is about 5 hundred million yuan.
At present, the laver cultivation is carried out in winter and spring, the growth of the laver and the quality of the laver are completely controlled by natural environmental factors, and manual intervention cannot be carried out. Moreover, the cultivation workers are in production operation on the small boat on the sea surface in cold and humid winter, and the working conditions are extremely severe.
The invention discloses a patent with publication number CN 1893816A, published as 2007, 1 month and 10 days, and named as 'technology for cultivating laver and other algae in a land-based seawater pond', relates to the concept of cultivating seedlings and cultivating laver in a land-based seawater pond, and the legal state of the patent application is 'regarded as withdrawal after the invention patent application is published', and the legal state takes effect as 2010, 8 months and 18 days.
The invention patent with publication number CN 106069714A, application publication date 2016, 11, 9, and name "an automatic laver culture system", is to protect the "laver culture rack with hydraulic system capable of automatically lifting" from the claims, the specification and the drawings of the specification.
The invention provides a factory integrated system for culturing laver, which is integrated by multiple systems, and provides direct, complete and unambiguous technical characteristics and technical methods.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an industrial integrated system for culturing laver and a corresponding technical method aiming at the defects in the existing process of culturing laver in an open sea area.
In order to solve the above technical problems, the present invention provides an integrated system for culturing laver in factory, comprising:
the production factory building is of a masonry concrete structure, can be a steel structure mixed structure, can be a steel frame plastic film greenhouse, can be a masonry concrete greenhouse, can be a steel frame glass greenhouse, and can be a masonry concrete glass greenhouse; the plant can be a single independent plant or a connected plant.
The cultivation pond is built by masonry concrete, can be made of high polymer materials such as glass fiber reinforced plastics and the like, can be made by paving a high polymer material film in a welded metal frame, and the area and the number of the cultivation pond are matched with the area and the number of a production factory building; the net is formed by connecting high polymer material net wires.
The illumination system consists of an illuminating lamp, a full spectrum lamp, an ultraviolet lamp and an electric sunshade net.
The air flow system consists of a fan and forms airflow in a production plant when needed.
An air temperature and humidity system consists of a fan and an electric heat-insulating curtain.
The cultivation water storage and purification system consists of an open-air water tank, a fence filter, a coarse sand filter, a fine sand filter, a full-dark sedimentation tank, a cultivation water storage tank, an ultraviolet sterilizer and the like.
The water temperature and flow system for cultivation consists of heating equipment, refrigerating equipment, water pump and pipeline.
The system for salinity and nutrient salt of culture water is composed of salinity pool, nutrient salt preparing unit (carbonate preparing unit), and filter.
The system for carbon-oxygen pH value of water for cultivation is composed of carbon dioxide steel cylinder group, carbonate preparation device (nutrient salt preparation device), oxygen steel cylinder group, air blower, on-line pH value monitor and other devices.
The nine systems can be combined, such as an air flow system and an air temperature and humidity system; some systems can be further subdivided, such as a carbon-oxygen pH system for aquaculture water; here, 9 system names are listed for the purpose of detailed description, and are not intended to limit the number of systems to 9.
In order to realize the cultivation of the laver in the factory integrated system integrated by the systems, the integrated system needs to be stably operated, and the integrated system needs to be stably operated, the following specific technical parameters and technical methods need to be adopted:
a factory building is produced: single area 200m2In the above, the plants are arranged in the east-west direction, so that the plants can receive natural illumination to the maximum extent; 2-50 ten thousand single plants can be connected together to form a continuous plant according to the land area size of the implementation place and the local conditions.
Culture ponds and culture nets:
a. the culture pond has the single size, the width is 1.8m-4.0m, the length is 10m-100m, and the height is 0.5m-1.2 m; the bottom of each culture pond is provided with a drainage valve, and each culture pond is connected end to end in a pipeline connection mode and is filled with water through a pipeline.
b. Hooks made of seawater corrosion resistant materials are arranged on the peripheral wall of the culture pond and used for hanging culture nets in production;
c. the net is formed by connecting net wires made of single high polymer materials, the number of strands of the single net wires is unlimited, the total diameter is 3mm-6mm, the mesh is 50mm-350mm, and the size of the net is adapted to the width and the length of the culture pond.
d. A high polymer material reflective membrane is laid at the bottom of the culture pond, so that part of the laver growing under the net ropes and being shielded can obtain good illumination;
e. the water inlet height of the culture pond is 10cm-20cm away from the top of the pond;
f. the net is hung at a position 10cm-20cm away from the top of the tank;
g. controlling the net to have a drying time of 2-4 h every day;
h. the net is dried out by adopting a method of reducing the water level of the culture pond instead of relying on a mode of manual lifting or mechanical lifting;
i. harvesting once every time the laver grows to 15cm-20cm in length, and leaving 5cm for further growth to the next harvesting length after harvesting.
An illumination system:
a. natural illumination period is adopted during cultivation;
b. when the illumination time is less than 12 hours, starting a full-spectrum lamp for light supplement;
c. controlling the illuminance of the culture area within the range of 600-10000 lux;
d. when the illuminance is lower than 600 lux, a full-spectrum lamp is started to supplement light;
e. when the illuminance is higher than 10000 lux, the electric sunshade net is started to shade the sun;
f. the ultraviolet lamp is used for sterilizing the culture pond and the culture water, and is started for 1 to 2 hours after the natural color is completely dark when needed.
An air flow system: more than 2 fans are arranged in the production plant, when the temperature is too high or the humidity is too high, the fans can be started to regulate and control, and the air flow rate is controlled to be 0.3-5.4 m/s.
Air humiture system:
a. controlling the air temperature in a production plant to be 8-30 ℃;
b. when the temperature in the production plant is lower than 8 ℃, the electric heat-preservation curtain is pulled up to preserve heat, so that the temperature is prevented from being reduced;
c. when the temperature in the production plant is higher than 30 ℃, starting a fan to cool;
d. the relative humidity of the air is kept between 50 and 90 percent and can be adjusted by starting a fan.
The aquaculture water storage and purification system comprises:
a. water pumped from an open water pool by a water pump enters a coarse screen filter after passing through a fence filter, wherein the fence filter uses a 14-mesh screen, and the coarse screen filter uses a 16-500-mesh screen;
b. after passing through a coarse screen filter, the mixture enters a coarse sand filter;
c. the mixture enters a fine sand filter after passing through a coarse sand filter;
d. after passing through a fine sand filter, entering a full-dark sedimentation tank for sedimentation for 3-7 days for later use;
e. the water after 3 to 7 days of full-dark precipitation is filtered by another screen filter with the specification of 600 to 2000 meshes, and the filtered water can directly enter a system to be used as water for cultivation;
f. the water for cultivation after the full-dark precipitation can be filtered by a screen of 600 meshes to 2000 meshes after a metal ion chelating agent is added to remove heavy metals according to the water quality condition and then enters a system for use;
g. the culture water after the full-dark precipitation can be added with a biopolymer chelating agent to remove heavy metals according to the water quality condition, filtered by a screen of 600 meshes to 2000 meshes and then enters a system for use;
h. the culture water after full dark precipitation or heavy metal removal can also be passed through an ultraviolet sterilizer to thoroughly remove the miscellaneous algae and sterilize.
Culture water temperature and flow system:
a. the temperature of the water for cultivation is gradually reduced along with the attachment of the conchospores on the net until the seedlings germinate to the large algae;
b. the water temperature in the germination stage of the conchospores is controlled to be proper between 16 and 22 ℃, and is most suitable between 18 and 21 ℃;
c. the temperature of the water is controlled to be between 12 and 18 ℃ from the visible seedling (0.5 to 10mm), and the temperature is most suitable to be between 14 and 16 ℃;
d. the length of the algae reaches more than 10mm, the temperature is controlled to be proper between 6 and 14 ℃, and the temperature is most proper between 7 and 12 ℃;
e. the length of the laver reaches more than 10mm, and the temperature of the water for cultivation can be increased to 16-21 ℃ according to the comprehensive conditions of nutrient salt, illumination and carbon dioxide so as to accelerate the growth of the laver thallus, so that the laver quality is reduced by rapid growth, but higher yield can be obtained;
f. the temperature of the culture water is centrally controlled by a heating device or a refrigerating device, and is not controlled by a method of arranging heating pipes or refrigerating pipes in a single culture pond;
g. the flow velocity of water flow in the culture pond is proper between 0.1 and 0.5m/s, and is most proper between 0.1 and 0.3 m/s.
Water salinity and nutrient salt system for cultivation:
a. the salinity of the water for cultivation is suitably 20 per mill to 36 per mill, and is most suitably 26 per mill to 32 per mill;
b. salinity refers to sodium chloride (NaCl) content;
c. when the salinity is lower than 20 per mill, adding raw salt (solid granular NaCl) into a salinity adjusting tank to prepare strong brine, precipitating and filtering, and pumping into a culture water system;
d. pumping fresh water when the salinity is higher than 36 per mill;
e. the total nitrogen content in the water for cultivation is 120mg/m3-500mg/m3，190mg/m3-260mg/m3Most suitable;
f. the total phosphorus content in the water for cultivation is 12mg/m3-190mg/m3；
g. The growth regulator Triacontanol (TRIA) content in the culture water is 0.01mg/L-1.0 mg/L.
C-oxygen pH value system for cultivation water:
a. carbon dioxide (CO) in cultivation area2) The content of carbon dioxide (CO) in the steel cylinder can be controlled by controlling a carbon dioxide steel cylinder group to be 300ppm-1000ppm2) After being heated, the laver is released to a culture area and is absorbed and utilized by the laver in a gas form;
b. carbon dioxide in the steel cylinder can be released into culture water after being heated, and the carbon dioxide is absorbed and utilized by the laver in a water-soluble carbon dioxide mode;
c. ammonium bicarbonate (NH) can be added into a carbonate preparation device (nutrient salt preparation device)4HCO3) Or sodium bicarbonate (NaHCO)3) Dissolved in bicarbonate ion (HCO)3 -) In the form of ammonium Nitrogen (NH) for absorption and utilization by laver4-N) form is supplemented as nutrient salt into the culture water;
d. controlling the dissolved oxygen in the water for cultivation to be 5mg/L-12 mg/L;
e. oxygen (O) in the steel cylinder is controlled by operating the oxygen steel cylinder group2) Releasing the concentrated solution into the culture water to increase the content of dissolved oxygen;
f. the dissolved oxygen content of the aquaculture water can be increased by starting the oxygen increasing machine and the air blower to intensively aerate the aquaculture water;
g. the pH value of the water for cultivation is 7.7-8.9, and the pH value is 7.9-8.2 most suitable;
H. the pH value is regulated by adopting a method of supplementing fresh culture water, and any inorganic acid and alkali are added into the culture water without quickly regulating the pH value.
Drawings
FIG. 1 shows the life history of laver;
FIG. 2 is a schematic diagram of various systems;
FIG. 3 is a schematic flow chart;
Detailed Description
The technical solution of the present invention is further explained in detail below with reference to the specific embodiments and the accompanying drawings.
Example (b): as shown in fig. 1, the "cultured laver" work in an integrated factory system for culturing laver only involves the upper left part of a line segment AB in the figure, namely, the "thallus stage", and does not involve the "seedling raising and collecting stage";
as shown in fig. 2, the names of the systems in an integrated factory system for culturing laver;
as shown in fig. 3, a water pump a1 is started, seawater is pumped from an open-air water pool 1, the seawater is sent to a fence filter 2, the seawater enters a coarse screen filter 3 after being filtered, the seawater enters a coarse sand filter 4 after being filtered, the seawater enters a fine sand filter 5 after being filtered, the seawater enters a totally-dark sedimentation tank 6 again, and sedimentation is carried out for 7 days for later use;
7 days later, starting a water pump A2, pumping water from the totally-concealed sedimentation tank 6, opening a valve 8a to enable the water to enter a heavy metal removal process 8, removing heavy metals and then entering a fine screen filter 7-1, opening the valve 7-1a to enable the water to enter an ultraviolet sterilizer 9, and after algae removal and sterilization, entering a culture water storage tank 10; in this example, the method of removing heavy metals is to add a biopolymer chelating agent, which is chitin for flocculation.
When the water level of the cultivation water storage tank 10 reaches 90%, stopping water inflow, starting the heating system 11, and controlling the water temperature to be 19 +/-1 ℃;
simultaneously, the salinity and nutrient salt system 13 is started, the salinity is controlled to be 28 per mill, and the nitrogen content is controlled to be 200mg/m3Controlling the phosphorus content to be 50mg/m3。
While the heating system and the salinity and nutritive salt system work, a reflective film is paved and a culture net D is hung on a culture pond C in the production plant B, the length of the culture pond C is 50m, the width is 1.8m, the height is 0.7m, and the area is 0.7m90m2。
The breeding net D is woven by polyethylene vinylon blended net wires with the diameter of 3mm, the mesh specification is 150mm multiplied by 150mm, the length is 49.5m, and the width is 1.7 m.
The breeding net D is completed by collecting seedlings in a seedling raising factory, and enough conchospores are attached to the net; the net D is hung at the height of 55cm of the culture pond.
After the cultivation net is hung, opening a valve A3-a, opening a water pump A3, feeding water into a cultivation pond C in a production plant B, opening a valve 7-2B when the water level reaches 65cm, and adjusting the opening degree to keep the water level of the cultivation pond C at 60-65cm, so that the uninterrupted circulation of cultivation water between a cultivation pond storage tank 10 and the cultivation pond C is realized;
when the water for cultivation is circulated to the 12 th hour, the opening degree of the valve A3-a is adjusted, the water level of the cultivation pond C is reduced until the cultivation net D is exposed out of the water surface, and the cultivation net is controlled to be dried out once every day; opening the valve 7-2a and the fine screen filter 7-2 during the drying period, and cleaning the broken laver and other sundries therein once every 3 days.
After the cultivation net D is dried for 2 hours, the opening degree of the valve A3-a is adjusted to enable the water level of the cultivation pond C to rise and be kept at 60-65 cm.
Keeping the water level of the culture pond, and continuously monitoring parameters such as the temperature of culture water, nutritive salt and the like.
When the cultivation net is hung 14 days away from the water inlet of the cultivation pond, the laver seedlings which can be seen by naked eyes appear on the cultivation net, and the length is 0.5mm-1.0 mm;
after the seedlings are seen, starting a refrigerating system 12, and reducing the temperature of water for cultivation to 15 +/-1 ℃;
when seedlings are seen, the temperature of the water for cultivation is reduced, the salinity and nutrient salt system 13 is started, the salinity is adjusted to 28 per thousand, and the nitrogen content is adjusted to 200mg/m3Adjusting the phosphorus content to 50mg/m3(ii) a The fan of the air flow system 15 was turned on 1 ventilation 1 time every 1 day.
After 9 days, when the seedlings grow to the length of 10mm-30mm, a refrigeration system is started, and the temperature of water for cultivation is reduced to 9 +/-1 ℃. And continuously monitoring parameters such as the temperature of the culture water, nutrient salt and the like within a 9-day period, and timely adjusting.
And after 12 days, the length of the thallus Porphyrae thallus reaches 200mm, the water level of the culture pond is reduced until the net and the thallus Porphyrae are exposed out of the water surface, and the thallus Porphyrae is collected once.
Continuously monitoring parameters such as temperature, nutritive salt, pH and the like of the culture water within 12 days, and timely adjusting;
starting a fan of the air flow system 15 to ventilate for 1 time every 1 day within a period of 12 days;
supplementing triacontanol for 1 time within 12 days;
starting a carbon-oxygen and pH system 14 to supplement carbon dioxide in the culture water once within 12 days;
in a period of 12 days, the full-spectrum lamp of the illumination system 17 is started up for 100 hours to supplement light, and the sun-shading net of the illumination system is not started;
the motorized thermal shades of the air temperature and humidity system 16 are not opened during the 12 day period.
And cleaning a production workshop and a culture pond after harvesting, hanging the harvested culture net again, and feeding water, wherein the temperature of the culture water is controlled to be 9 +/-1 ℃. And harvesting for the second time after 10-12 days.
The above embodiments are provided for illustrative purposes only and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and therefore all equivalent technical solutions should fall within the scope of the present invention, and the scope of the present invention should be defined by the claims.
Claims (6)
1. An industrial integrated system for culturing laver, which is characterized in that: the factory integrated system is formed by integrating nine systems, namely a production factory building, a culture pond, a culture net, an illumination system, an air flowing system, an air temperature and humidity system, a culture water storage and purification system, a culture water temperature and water flow system, a culture water salinity and nutrient salt system and a culture water carbon-oxygen pH value.
(1) A factory building is produced:
the production factory building is of a masonry concrete structure or a steel structure mixed structure; the production plant is a single independent plant or a connected plant, the single independent plant is arranged in the east-west direction with the area of more than 200 square meters, or 2-50 ten thousand single plants are connected together to form the connected plant according to the land area size of an implementation place;
(2) culture ponds and culture nets: the culture pond is built by masonry concrete or made of high polymer materials or made by paving a high polymer material film in a welded metal frame, the area and the number of the culture pond are matched with the area and the number of production plants, and the net is formed by connecting high polymer material net wires;
a. the culture pond has the single size, the width is 1.8m-4.0m, the length is 10m-100m, and the height is 0.5m-1.2 m; a drainage valve is arranged at the bottom of each culture pond, each culture pond is connected end to end in a pipeline connection mode, and water enters through the pipeline;
b. hooks made of seawater corrosion resistant materials are arranged on the peripheral wall of the culture pond and used for hanging culture nets in production;
c. the net is formed by connecting net wires made of single high polymer materials, the number of strands of the single net wires is not limited, the total diameter is 3mm-6mm, the diameter of meshes is 50mm-350mm, and the net is adaptive to the width and the length of the culture pond;
d. a high polymer material reflective membrane is laid at the bottom of the culture pond, so that part of the covered laver growing below the net ropes can obtain good illumination;
e. the water inlet height of the culture pond is 10cm-20cm away from the top of the pond; the net is hung below the top of the tank by 10cm-20 cm;
f. the net is controlled to have the drying time of 2-4 hours every day, and the drying of the net is realized by adopting a method of reducing the water level of the culture pond instead of relying on a mode of manual lifting or mechanical lifting;
g. harvesting once every time the laver grows to be 15cm-20cm long, and reserving 5cm for continuously growing to the next harvesting length after harvesting;
(3) an illumination system: the cultivation system is composed of a lamp for illumination, a full spectrum lamp, an ultraviolet lamp and an electric sunshade net, wherein a natural illumination period is adopted during cultivation, the illumination time is less than 12 hours, the full spectrum lamp is started for light supplement, the illumination intensity of a cultivation area is 600 and 10000 luxes, the full spectrum lamp is started for light supplement when the illumination intensity is less than 600 luxes, the electric sunshade net is started for sunshade when the illumination intensity is more than 10000 luxes, the ultraviolet lamp is used for sterilizing a cultivation pond and water for cultivation, and the electric sunshade net is started for 1 hour to 2 hours when the sky color is completely dark;
(4) an air flow system: the system is composed of fans, airflow is formed in a production plant when needed, more than 2 fans are arranged in the production plant, when the temperature is too high or the humidity is too high, the fans are started to regulate and control, and the air flow rate is controlled to be 0.3m/s-5.4 m/s;
(5) air humiture system: the air temperature in a factory building is 8-30 ℃, the electric heat-preservation curtain is pulled up when the temperature is lower than 8 ℃, the fan is started when the temperature is higher than 30 ℃, the relative humidity of air is kept between 50 and 90 percent, and the air is regulated by starting the fan;
(6) the aquaculture water storage and purification system comprises: comprises an open-air pool, a fence filter, a coarse sand filter, a fine sand filter, a totally-dark sedimentation tank, a water storage tank for cultivation and an ultraviolet sterilizer;
a. the culture water enters a coarse screen filter after passing through a fence filter, the fence filter uses a 14-mesh screen, and the coarse screen filter uses a 16-500-mesh screen;
b. after passing through a coarse screen filter, entering a coarse sand filter;
c. the mixture enters a fine sand filter after passing through a coarse sand filter;
d. after passing through a fine sand filter, entering a full-dark sedimentation tank for sedimentation for 3-7 days for later use;
e. after full-dark precipitation, filtering the solution by a fine screen filter, and then feeding the solution into a water temperature and water flow system for cultivation, wherein the screen specification is 600-2000 meshes; or after full-dark precipitation, adding a metal ion chelating agent or a biopolymer chelating agent according to the water quality condition to remove heavy metals, filtering the removed heavy metals by another fine screen filter, and allowing the heavy metals to enter a water temperature and water flow system for cultivation, wherein the screen is 600-2000 meshes in specification; or the aim of thoroughly removing the mixed algae and sterilizing is achieved through ultraviolet sterilization;
(7) culture water temperature and flow system: the device consists of a heating device, a refrigerating device, a water pump and a pipeline, wherein the temperature of water for cultivation changes along with the attachment of conchospores on a net until seedlings germinate to the bodies of the algae;
a. controlling the water temperature at 16-22 ℃ in the germination stage of the conchospores;
b. controlling the water temperature at 12-18 ℃ when the seedlings can be seen by naked eyes to be 0.5-10 mm;
c. controlling the temperature at 6-14 ℃ when the length of the alga body reaches more than 10 mm; or when the length of the thallus is more than 10mm, the temperature of the water for cultivation is increased to 16-21 ℃ according to the comprehensive conditions of nutrient salt, illumination and carbon dioxide so as to accelerate the growth of thallus Porphyrae;
d. the temperature of the culture water is controlled by a heating device and a refrigerating device in a centralized way, and a method of arranging heating pipes or refrigerating pipes in a single culture pond is not used for controlling the temperature of the culture water;
e. the flow velocity of water flow in the culture pond is 0.1-0.5 m/s;
(8) water salinity and nutrient salt system for cultivation: comprises a salinity allocation pool, a nutrient salt preparation device and a filter;
a. the salinity of the water for cultivation is 20-36 per mill, the salinity refers to the content of sodium chloride, when the salinity is lower than the parameter requirement, the raw salt is added into a salinity adjusting pool to prepare strong brine, and after precipitation and filtration, the strong brine is pumped into a water system for cultivation, and when the salinity is higher than the parameter requirement, fresh water is pumped;
b. the total nitrogen content of the culture water is 120 mg/cubic meter to 500 mg/cubic meter;
c. the total phosphorus content of the culture water is 12 mg/cubic meter to 190 mg/cubic meter;
d. the triacontanol content of the water growth regulator for cultivation is 0.01mg/L-1.0 mg/L;
(9) c-oxygen pH value system for cultivation water: comprises a carbon dioxide steel cylinder group, a nutrient salt preparation device, an oxygen steel cylinder group, an air blower and an online pH value monitor;
a. the carbon dioxide content of the culture area is 300ppm-1000ppm, carbon dioxide in the steel cylinder is released into the air of the culture area after being heated by controlling the carbon dioxide steel cylinder group, and is absorbed and utilized by the laver in a gas form, or carbon dioxide in the steel cylinder is released into culture water after being heated, and is absorbed and utilized by the laver in a water-soluble carbon dioxide form, or ammonium bicarbonate or sodium bicarbonate is added into the nutrient salt preparation device, and is absorbed and utilized by the laver in a bicarbonate ion or ammonium nitrogen form after being dissolved;
b. 5-12 mg/l of dissolved oxygen in the aquaculture water, and the dissolved oxygen content is increased by operating the oxygen steel cylinder group to release the oxygen in the steel cylinder into the aquaculture water in a centralized manner or by starting an aerator and a blower to perform centralized aeration on the aquaculture water;
c. the pH value of the culture water is regulated and controlled by adopting a method of supplementing fresh culture water;
2. the factory-like integrated system for culturing laver according to claim 1, wherein: the cultured thallus Porphyrae includes Porphyra yezoensis, Porphyra haitanensis, and Porphyra tenera.
3. The factory-like integrated system for culturing laver according to claim 1, wherein: the cultivation of the laver only means that after the conchospores are attached to the net ropes, the conchospores begin to germinate and split into fronds, and the process from the fronds to the fronds is collected, namely, the thallus stage in the life history of the laver, but does not relate to the laver filament cultivation and conchospore seedling collection stage, namely, the laver seedling raising stage.
4. The factory-like integrated system for culturing laver according to claim 1, wherein: the aquaculture water comprises natural seawater, formulated land saline water, formulated underground brackish water and formulated fresh water.
5. The factory-like integrated system for culturing laver according to claim 1, wherein: and (8) the salinity of the water for cultivation and the salinity of the water for cultivation in the nutrient salt system are 26-32 per mill.
6. The factory-like integrated system for culturing laver according to claim 1, wherein: step (9), in a carbon-oxygen pH value system for cultivation water: the pH value of the culture water is 7.7-8.9.
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| CN109992024A (en) * | 2017-12-30 | 2019-07-09 | 武汉融创信息技术有限公司 | Intelligent aquaculture system |
| CN107980610B (en) * | 2018-01-05 | 2024-01-23 | 宁波大学 | Controllable circulating device for stimulating megaalgae spores to diffuse |
| CN108363441B (en) * | 2018-01-12 | 2023-08-15 | 浙江大学 | Manual upflow system and regulation and control method based on manual upflow oligotrophic salt sea area |
| CN109906934A (en) * | 2019-03-27 | 2019-06-21 | 中国科学院海洋研究所 | A method of promoting the formation of Porphyra yezoensis filamentous conchosporangia |
| CN111411044A (en) * | 2020-03-31 | 2020-07-14 | 广东海兴农集团有限公司 | Industrial bait microalgae culture method |
| CN112425503B (en) * | 2020-12-10 | 2022-04-08 | 江苏海洋大学 | Device for full-artificial seedling picking of asparagus |
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