The requirements for the culture and culture of the clams are not high. The common shrimp ponds can be polycultured. If mixed with prawns, the area of ​​clams accounts for 30%-40% of the entire shrimp pond area. If you intend to stock up in the current year and reach the export specifications that year, you can stock 50-60 grains of clams per 500 g. According to foreign trade export prices, it is best to stock Jiangsu Wenchang seedlings. Wen Hao seed stocking to master
1. Dredging and impurity removal. After shrimps are caught, the shrimp ponds are exposed. Before mid-February every year, it is necessary to make clearing and removing impurities (weeds, algae, etc.). Zhongtan and part of the beach are livelihoods of Clams. Where weeds, large-scale green algae (especially canola), and mudflats containing humic substances, hydrogen sulfide and other harmful substances, are not conducive to the growth of clams and must be stored before stocking. Completely removed.
2. Tillage puddle, cultivate basic food. The beach where the cultured clams are selected can be plowed with ploughs, rakes or machinery to plow till about 15 centimeters in order to facilitate the burrowing of clams in the future. After the ploughing, the plots shall be ditched to form a ridge with a ridge width of about 3-3.5 meters and a length of 15-20 meters; the sulcus will form a slight slope (into the ring ditch or The middle slope) to facilitate drainage. The trail surface was made into a road shape to reduce mud deposits. After the construction of Putian, it is also necessary to level the surface of the rake and use a fine-toothed rake to pound the lumps of smashing, smashing and squeezing. After the above work is done, the next step is clearing the register. Clear ponds should use quick-lime clear ponds to grow. After clear ponds, it is best to apply a layer of chicken manure to the paddies that are to be cultured. If no chicken manure can be applied 5% of the fermented human excrement, the purpose is to cultivate benthic algae, in order to facilitate the post-stocking of clams. Then into the pond about 30 meters, covering the entire beach, the water body fertilization. Fertilizer amount: General use of nitrogen fertilizer 2-4 g / cubic meter of water for the first time, phosphorus 0.2-0.4 g / cubic meter of water, after another interval of 3-5 days and then topdressing again. When the transparency of the pond water reaches 30-40 cm, the water color changes to yellow-brown or light brown. The above work should be done by the end of February or early March.
3. Seed stocking. One is the quality of seedlings. The stocked clam seedlings should have complete shells, bright color, tight double shells, individual fat, uniform size, and high-quality seedlings without impurities. It is best to use the wild small clams on the beach as seedlings, followed by the small clams in the shrimp ponds. Never use the small clams that have been screened out after the acquisition of foreign trade, because the liveliness of these clams is very low. The second is seed transportation. The time between the long-distance transport of clams and the seedlings from the seedlings to the stockings and the stocking in ponds should be as short as possible. It is best to use a woven bag or a sack to ship the clam seedlings. The mouth of the clams should be tightly packed to prevent the clams from spewing water and affect the vitality. During the shipment, light pressure should be given, usually about 40 kg per bag. After the seeds are shipped, they will be aquacultured as soon as possible. The third is stocking density. The clams of the clams are 180-220 kilograms per mu for the ponds and 400-500 kilograms per mu for the actual farmed area. The fourth is stocking methods. The clams of the clams usually have two methods of seeding seedlings and shallow water seedlings. Generally, seedling seedlings are preferred.
1. Dredging and impurity removal. After shrimps are caught, the shrimp ponds are exposed. Before mid-February every year, it is necessary to make clearing and removing impurities (weeds, algae, etc.). Zhongtan and part of the beach are livelihoods of Clams. Where weeds, large-scale green algae (especially canola), and mudflats containing humic substances, hydrogen sulfide and other harmful substances, are not conducive to the growth of clams and must be stored before stocking. Completely removed.
2. Tillage puddle, cultivate basic food. The beach where the cultured clams are selected can be plowed with ploughs, rakes or machinery to plow till about 15 centimeters in order to facilitate the burrowing of clams in the future. After the ploughing, the plots shall be ditched to form a ridge with a ridge width of about 3-3.5 meters and a length of 15-20 meters; the sulcus will form a slight slope (into the ring ditch or The middle slope) to facilitate drainage. The trail surface was made into a road shape to reduce mud deposits. After the construction of Putian, it is also necessary to level the surface of the rake and use a fine-toothed rake to pound the lumps of smashing, smashing and squeezing. After the above work is done, the next step is clearing the register. Clear ponds should use quick-lime clear ponds to grow. After clear ponds, it is best to apply a layer of chicken manure to the paddies that are to be cultured. If no chicken manure can be applied 5% of the fermented human excrement, the purpose is to cultivate benthic algae, in order to facilitate the post-stocking of clams. Then into the pond about 30 meters, covering the entire beach, the water body fertilization. Fertilizer amount: General use of nitrogen fertilizer 2-4 g / cubic meter of water for the first time, phosphorus 0.2-0.4 g / cubic meter of water, after another interval of 3-5 days and then topdressing again. When the transparency of the pond water reaches 30-40 cm, the water color changes to yellow-brown or light brown. The above work should be done by the end of February or early March.
3. Seed stocking. One is the quality of seedlings. The stocked clam seedlings should have complete shells, bright color, tight double shells, individual fat, uniform size, and high-quality seedlings without impurities. It is best to use the wild small clams on the beach as seedlings, followed by the small clams in the shrimp ponds. Never use the small clams that have been screened out after the acquisition of foreign trade, because the liveliness of these clams is very low. The second is seed transportation. The time between the long-distance transport of clams and the seedlings from the seedlings to the stockings and the stocking in ponds should be as short as possible. It is best to use a woven bag or a sack to ship the clam seedlings. The mouth of the clams should be tightly packed to prevent the clams from spewing water and affect the vitality. During the shipment, light pressure should be given, usually about 40 kg per bag. After the seeds are shipped, they will be aquacultured as soon as possible. The third is stocking density. The clams of the clams are 180-220 kilograms per mu for the ponds and 400-500 kilograms per mu for the actual farmed area. The fourth is stocking methods. The clams of the clams usually have two methods of seeding seedlings and shallow water seedlings. Generally, seedling seedlings are preferred.