Mudworm, also known as grain cockroach, blood cockroach, and cockroaches, is a genus of the genus Falconidae, Acarina, and Polygonaceae. It is a kind of marine shellfish with high economic value in China's coast. After several years of research, we have concluded a set of practical, high-yielding, high-yield technologies for loach nets. We will now introduce them as follows: 1. Selection of net enclosures for breeding sites 1 Choose calm seas, smooth flow, slightly freshwater injection, and low tide When the dew-dry time is not more than 4-6 hours in the middle-low tide area, the tidal flat is smooth, and the tidal flat surface is stable during wind and waves, and there will be no gutter phenomenon. 2? The bottom of the mud is muddy 70% - 80% mud, sand 20% -30%, no consolidation of the mudflat, about 5cm of silt, fertile bottom. Because of the rich growth of benthic algae and other loaches in this sediment, the organic matter is more conducive to feeding and growth. 3? The water quality is pollution-free. There are no pesticide plants or chemical plants nearby. The salinity of the waters is between 16.4 ‰ and 32 , and the pH is 8. Second, aquaculture methods and facilities 1? Set fences: The role of nets is mainly to determine the culture area, to facilitate the management, followed by the delimitation of the laying of a variety of muddy site boundaries. Perimeter nets are made of 3cm mesh polyethylene nets, and the net height is kept at 50cm. The struts can use wood rods and bamboo rods with a diameter of 5-10cm, and can also use cement piles. The net area is generally 500-1000 mu. The internal perimeter grid can be used 2cm polyethylene mesh, net height 20-30cm, partition area is generally 10-50 acres. 2? Breeding method: The loach from the acquisition or long-distance transport should be separated according to the large, medium and small specifications. The large size is generally more than 400 grains/kg, the medium size is about 2000 grains/kg, and the small size is 5000 grains/kg. Then broadcast according to different specifications in the site with the internal fence. Large acres of 80-100kg, 40-50kg in medium grain and 40kg in small grain. Third, the seed stocking 1? Placement: Check the beach before the seedlings and make a trimming and turning. The high beach that affects the tide at the time of ebb tide should be leveled and filled at the bottom so as to prevent the phenomenon of flow groove. 2? Remove predators: Prior to the release of the seedlings, the predators hidden in the culture area should be removed. 3? Seed enter play: Beginning in April. Seeds are generally collected as wild seedlings, and they can also be purchased as seedlings. The acquisition of wild seed collected during harvesting should be handled in time, especially in July, August and September to prevent the survival rate from affecting. To recover the seed that needs long-distance transportation from the field, the air temperature and time should be known during transportation. Generally used nylon bags, 15kg per bag, bags stacked no more than 3 layers. The transport time must not exceed 48 hours. Cover with straw bags soaked in sea water to avoid sun exposure and air drying. Fourth, develop the management of the material conditions and technical measures for the cultivation of loach nets. Finally, it is achieved through the management of crop management. The management of crop management is very important. 1 ? Organize beach protection to prevent theft. A guard boat is provided for every 1,000 mu of mudflat with 2-4 guards per boat. 2?Exploration nets, piles, and piles have been found to be downright and righting. Timely clearance of fouling organisms such as algae and sea squirt attached to the fence. 3. To understand the status of the beach surface, if there are signs of trough found in time to take mud bags to fight dams, fill the mud in the low area and other measures to prevent it from happening, so as to avoid the flow tank to wash away the mud. 4? Remove predators, and promptly clear the predators and other predators in the beach. 5. According to the growth of the mud, timely disperse the dense muddy mud, or fill in the muddy mud. 6. Regularly determine the growth and density of loach. It is also necessary to understand the breeding condition of loach during the breeding period of loach in July and August. 7. Strengthen water quality monitoring. 5. Harvested loach generally reaches the market specification of 160 grains/kg after 3 years of growth. From November to April of the following year, especially during the peak season before and after the Spring Festival, the loach is the most plump, the blood is more delicious, and the temperature is low, it can be stored for a long time. Muddy harvesting methods: After the ebb tide, concentrate with rakes, scrape into rake bags, wash away impurities. You can also use your fingers to dig out the “gas eyes†that are formed in the mud in the mud when entering the mud. Muddy burrowing depth is generally about 1cm. Loach generally yields up to 200-250 kg per mu.
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