Detailed Explanation of Key Points and Management Methods for Clam Farming Technology
The clam is one of the four major farmed shellfish species in China. Its meat is delicious and nutritious, rich in protein, carbohydrates and various trace elements, and it is deeply loved by consumers. As market demand grows, its farming area is also gradually expanding. Below, Qinnong Web brings you clam farming technology.
1. Farming Site
The clam farming site should be chosen in low-tide-zone tidal flats with smooth tidal currents, flat terrain and high sand content, or in ponds with good water quality and bottom conditions. The farming site must have good transportation conditions and be kept away from industrial pollution areas. For tidal flat farming, the flat must be turned and improved; after the turned-out mud and sand are washed by tides and exposed to the sun, it should be leveled again. In areas prone to tidal erosion and sediment coverage, dikes should be built for flood prevention to prevent the loss of seedlings. For pond farming, dikes and sluice gates should be repaired well. One month before releasing seedlings, drain the pond water first, expose the bottom to the sun, carry out disinfection treatment, and then discharge filtered seawater for farming.
2. Seeding
The seeding time is determined by the size of the seedlings. Generally, white seedlings are seeded in April-May, medium seedlings from December to the following spring, and large seedlings before spawning. There are two seeding methods: dry seeding and wet seeding. For dry seeding, after the tide recedes and the flat is exposed, spread the clam seedlings evenly to prevent them from piling up; for wet seeding, when the tide has not yet receded from the flat, spread them evenly in areas with slow tidal currents. Wet seeding takes longer and has a higher survival rate, but it is only suitable for medium and large seedlings. Be sure to pay attention to seeding density. If the seeding density is too high, clams grow slowly, but if the density is too sparse, the yield will be low, so seeding density must be well controlled.
3. Strengthen Management
After seeding, patrol and manage frequently to check whether seedlings are lost and how the clams' growth rate and survival rate are, so as to facilitate timely replanting and corresponding measures. In addition, pay attention to repairing the flat and dikes to prevent clams from escaping. In addition, clams that have just reproduced are extremely weak and often float out of the flat. At this time, attention must be paid to deaths caused by human trampling. After reproduction, management should be strengthened or they should be directly transplanted to other areas.
4. Strengthen Disease Prevention and Control
During farming, disease prevention and control must be strengthened. Especially in the high-temperature environment of summer, this is a period of high incidence of clam diseases, and clams often infect each other after dying and decaying. In addition, high summer temperatures easily cause pollution of water quality and bottom conditions, and this is a period when parasites and microorganisms reproduce. The farming site should be disinfected and sterilized regularly. Quicklime or chlorine dioxide can be splashed on the water body for disinfection. In addition, when breeding seedlings in summer, oxytetracycline can be added to the water body to prevent and control diseases, inhibit seedling reproduction, and benefit clam growth.
The above is the clam farming technology brought to you by Qinnong Web. The introduction to clam farming technology ends here. For more information, please stay tuned to Qinnong Web.