Moerella Iribescens, S. sinensis, S. siciliana, and S. squamosa, commonly known as sea melon seeds, plum oysters, and flat oysters, are economically valuable small tidal shellfish that are distributed in the north and south of China. Coastal areas, especially in Zhejiang and Fujian, have the largest coastal production. Rainbow Ming Sakura's meat is delicate and its meat tastes delicious. It is loved by the residents and is the main species that coastal residents naturally capture. In recent years, a certain scale of artificial breeding has been carried out on the coast of our province and it is a new species of shellfish shellfish breeding. At present, the Rainbow Damming Slugfish uses low-damage aquaculture. The relevant technical briefs are as follows:
I. Aquaculture Environment and Site Conditioning Environmental Conditions: The tidal flats of the Neijiang High School Tidal Wave Area with small waves, weak currents, and stable sea conditions should be selected. The soft and sandy soil is preferred for the sediment. The water temperature and salinity change should be as suitable as possible for the ecological characteristics of the rainbow sakura hawksbill. The survival temperature of the rainbow sakura scallop is -20C-350C, the suitable water temperature is 10-300C, and the salt suitable range is 6.5. -32.7 ‰, with a large pH range of 4.07-9.03. In addition, in the selection of breeding sites, care should be taken to avoid sea areas with industrial pollution sources.
The construction of culture ponds: The use of low-damage aquaculture, long-term feeding, rapid growth, and stable water temperature in the pond, can prevent the death of the rainbow-shooting cherry trees from hot or cold. The culture pond consists of embankments, ring ditch, water outlet, and pond surface. The area ranges from half an acre to several acres. The shape is mostly square, and it can also vary with the terrain. The embankment is 0.3-0.5 meters high, the embankment is 0.8-1 meters wide, and the embankment is 0.3-0.5 meters wide. The ring ditch is a ditch surrounding the pond surface in the dam. The ditch is 0.3-0.5 meters wide and 0.3 meters deep. The outlet is the path for the tide to enter and exit the culture pond, and it controls the water level in the pond. The pond surface should be slightly lower than the pond beach surface so that the pond can normally store 10-15 cm of water. After the aquaculture pond has been built, apply a small nail to loosen the surface and then use a sampan plate to flatten the coated surface. For the old pond, it will be trimmed and flattened.
2. Clear ponds and sowing of clear ponds means clearing all the factors in the pond that are not conducive to the growth and survival of the rainbow beak. Thorough clearing of the pond is one of the necessary measures for aquaculture to achieve stable production and high yield. The method of detoxification is to kill poisonous creatures before they are stocked. Commonly used drugs are lime, tea seed cake, bleach, sodium cyanide and so on. Clear ponds should be selected during the sunny morning in the small tidal period to improve efficacy. At the same time as far as possible discharge pool water, in order to save the amount of medication, and pay attention to the dead pool, and improve overall efficacy. After clearing the surface of the clear pond, the seedlings can be sowed for water storage.
Seedling time: not the same everywhere, our province is generally in May-June or November.
Seed size and seedling volume: General seed size in the 2000-3000 grains / kg, stocking 30-40 million grains per acre. If the seed size is larger, the amount of seedlings should be reduced appropriately.
Seeding method: generally use dry seedling sowing, choose to tide in the morning and evening when low tide, when dry tide drainage pond water, the seedlings spread evenly on the surface of the pond, pay attention not to rebroadcast or missed broadcast.
Third, to develop management Rainbow Ming Sakura cultivars should be strengthened during the development of management, the prohibition of artificial trampling, protection pond surface formation, and often determine the seawater temperature and salinity of the cultivated site, pay attention to the changes, observe the activity and growth The situation, regular measurement and record, found problems solved in time.
Leak-proof and collapse-prevention: During the period of water storage and development, it is necessary to frequently go to sea to inspect the safety of the dams, especially when there are large waves, pay attention to whether there are any cave-ins, leaks, or leakages in the dams, and find that the problems are promptly repaired at high temperatures. During the low tidal period, it is even more important to ensure that the culture ponds are safe, otherwise they will affect the normal growth and even cause death.
Flood prevention and light protection: In the typhoon, rainy season and heavy rainstorms, due to the injection of flood water, the proportion of seawater in the pond often drops sharply. Therefore, the pond water should be drained in time after the rain, and fresh seawater should be included in the tide at high tide to prevent the proportion of the pond water from being too low and cause rainbow floods. Sakura 蛤 growth disorders or death.
Fertilization culture algae: If the water in the culture pond is too thin, you can use live water Dan, urea, etc. for fertilizer and water, in order to cultivate benthic silicon species, and promote the growth of rainbow-shoot cherry.
Change the water level to adjust the water level: change the water regularly, change the water in the big tide, use the machine that drains the water, use the machine to check the growth of the rainbow and cherry blossoms, arrange and fill the surface, clear the drainage ditch, remove the fish and shrimp, Crabs and canola and Other predators. According to the climate change situation, the water level adjustment work should be done in time. In spring and autumn, the weather should be warm and shallow, summer hot, winter cold and high water level.
4. The harvest time of the harvested rainbow sakura hawksbill should be based on the growth and fertility of each area, generally before the breeding season, that is, from May to the end of September. After the breeding period, the rainbow sakura sakura is relatively thin and should not be harvested. The length of the shell of the product Rainbow Sakurazaka is 1.2 cm or more, and the length of the shell is more than 1.8 cm. It is called a large-size commercial basket. The normal body color is gray and white with red flesh and rainbow luster.
The harvesting method is divided into net scraping and artificial digging according to different coating qualities. The soft muddy mud net is scraped by a net. It is easy to operate and has high work efficiency. The digging method is applicable to any mudflat, but the work efficiency is low but can be achieved. Capture large and small, the quality of goods captured is good.
I. Aquaculture Environment and Site Conditioning Environmental Conditions: The tidal flats of the Neijiang High School Tidal Wave Area with small waves, weak currents, and stable sea conditions should be selected. The soft and sandy soil is preferred for the sediment. The water temperature and salinity change should be as suitable as possible for the ecological characteristics of the rainbow sakura hawksbill. The survival temperature of the rainbow sakura scallop is -20C-350C, the suitable water temperature is 10-300C, and the salt suitable range is 6.5. -32.7 ‰, with a large pH range of 4.07-9.03. In addition, in the selection of breeding sites, care should be taken to avoid sea areas with industrial pollution sources.
The construction of culture ponds: The use of low-damage aquaculture, long-term feeding, rapid growth, and stable water temperature in the pond, can prevent the death of the rainbow-shooting cherry trees from hot or cold. The culture pond consists of embankments, ring ditch, water outlet, and pond surface. The area ranges from half an acre to several acres. The shape is mostly square, and it can also vary with the terrain. The embankment is 0.3-0.5 meters high, the embankment is 0.8-1 meters wide, and the embankment is 0.3-0.5 meters wide. The ring ditch is a ditch surrounding the pond surface in the dam. The ditch is 0.3-0.5 meters wide and 0.3 meters deep. The outlet is the path for the tide to enter and exit the culture pond, and it controls the water level in the pond. The pond surface should be slightly lower than the pond beach surface so that the pond can normally store 10-15 cm of water. After the aquaculture pond has been built, apply a small nail to loosen the surface and then use a sampan plate to flatten the coated surface. For the old pond, it will be trimmed and flattened.
2. Clear ponds and sowing of clear ponds means clearing all the factors in the pond that are not conducive to the growth and survival of the rainbow beak. Thorough clearing of the pond is one of the necessary measures for aquaculture to achieve stable production and high yield. The method of detoxification is to kill poisonous creatures before they are stocked. Commonly used drugs are lime, tea seed cake, bleach, sodium cyanide and so on. Clear ponds should be selected during the sunny morning in the small tidal period to improve efficacy. At the same time as far as possible discharge pool water, in order to save the amount of medication, and pay attention to the dead pool, and improve overall efficacy. After clearing the surface of the clear pond, the seedlings can be sowed for water storage.
Seedling time: not the same everywhere, our province is generally in May-June or November.
Seed size and seedling volume: General seed size in the 2000-3000 grains / kg, stocking 30-40 million grains per acre. If the seed size is larger, the amount of seedlings should be reduced appropriately.
Seeding method: generally use dry seedling sowing, choose to tide in the morning and evening when low tide, when dry tide drainage pond water, the seedlings spread evenly on the surface of the pond, pay attention not to rebroadcast or missed broadcast.
Third, to develop management Rainbow Ming Sakura cultivars should be strengthened during the development of management, the prohibition of artificial trampling, protection pond surface formation, and often determine the seawater temperature and salinity of the cultivated site, pay attention to the changes, observe the activity and growth The situation, regular measurement and record, found problems solved in time.
Leak-proof and collapse-prevention: During the period of water storage and development, it is necessary to frequently go to sea to inspect the safety of the dams, especially when there are large waves, pay attention to whether there are any cave-ins, leaks, or leakages in the dams, and find that the problems are promptly repaired at high temperatures. During the low tidal period, it is even more important to ensure that the culture ponds are safe, otherwise they will affect the normal growth and even cause death.
Flood prevention and light protection: In the typhoon, rainy season and heavy rainstorms, due to the injection of flood water, the proportion of seawater in the pond often drops sharply. Therefore, the pond water should be drained in time after the rain, and fresh seawater should be included in the tide at high tide to prevent the proportion of the pond water from being too low and cause rainbow floods. Sakura 蛤 growth disorders or death.
Fertilization culture algae: If the water in the culture pond is too thin, you can use live water Dan, urea, etc. for fertilizer and water, in order to cultivate benthic silicon species, and promote the growth of rainbow-shoot cherry.
Change the water level to adjust the water level: change the water regularly, change the water in the big tide, use the machine that drains the water, use the machine to check the growth of the rainbow and cherry blossoms, arrange and fill the surface, clear the drainage ditch, remove the fish and shrimp, Crabs and canola and Other predators. According to the climate change situation, the water level adjustment work should be done in time. In spring and autumn, the weather should be warm and shallow, summer hot, winter cold and high water level.
4. The harvest time of the harvested rainbow sakura hawksbill should be based on the growth and fertility of each area, generally before the breeding season, that is, from May to the end of September. After the breeding period, the rainbow sakura sakura is relatively thin and should not be harvested. The length of the shell of the product Rainbow Sakurazaka is 1.2 cm or more, and the length of the shell is more than 1.8 cm. It is called a large-size commercial basket. The normal body color is gray and white with red flesh and rainbow luster.
The harvesting method is divided into net scraping and artificial digging according to different coating qualities. The soft muddy mud net is scraped by a net. It is easy to operate and has high work efficiency. The digging method is applicable to any mudflat, but the work efficiency is low but can be achieved. Capture large and small, the quality of goods captured is good.
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