Eco-enrichment Technology of Crab, Shrimp, and Shrimp
December 20 13:03:35, 2018
I. Pond conditions and supporting facilities 1. Pond conditions The polyculture pond requires a quiet environment, plenty of sunshine, plenty of water, fresh water, convenient irrigation and drainage, an area of ​​about 15 mu, and an average water depth of 1.5 meters or more. It is better to have deep water and shallow water. The dredging, drying (chilling) ponds and disinfection are required before stocking. 2. The water system is equipped with an inlet and outlet at both ends of the supporting pond. The inlet is located at the interface with the highest water level. The cement culvert extends into the pool, and the outlet is located opposite the inlet. Inlet and outlet ports are all sealed with barbed wire to prevent escape. The water inlet also needs to be covered with a tube bag made by a sieve to prevent the entry of enemies. 3. Anti-escape wall with cement board, asbestos tile, ore tile or aluminum plate as a hoarding, bamboo stake support, thin wire tie, the soil part to stay 0.5 meters to 0.7 meters, the soil part of the remaining 0.2 meters to 0.3 meters, Four corners are built into an arc to prevent escape. 4. The food table pool is made of bamboo wood chips and other materials to make the food table (including the drying table). The food table is 30 to 40 angles, 2/3 is under the water surface, and 1/3 is on the water surface. It is also possible to leave a land with a width of 0.5 meters or more on the sunny side of the anti-escape wall, and apply sand of 0.1 to 0.2 meters. 5. Plant grasses to plant or transplant aquatic plants that account for 2/3 of the pool area, including submerged plants (Elodea, Vallisneria, etc.), emergent plants (reeds, wormwood, etc.) and floating Plants (water peanuts, water hyacinths, duckweed, etc.). Put fresh snails before and after Ching Ming, 300 kg to 500 kg per mu. Second, the breeding operation technical points 1. Seed stocks of crab species: February ~ March stocking specifications for 60/kg ~ 120/kg of crab, acres put 300 ~ 500; or May ~ June stocking The size is 2,000/kg to 3,000/kg bean crabs and 2000 mu.鳖: From March to April, stocking size is 150g/~170g/only, and 15~20 mu. Green prawns: In February-March, stocked juveniles of less than the last year's specifications were stocked, and 3 kg to 5 kg were put in the mu; or stocking broodstock of 5 cm to 7 cm in size before and after April and 0.5 kg to 1 mu were stored. Kilograms; or from June to July, stocked shrimps will be stocked with 10,000 to 15,000 mu. Carp: From April to May, the stocking size is 5 cm to 8 cm, and the early bloom of the year is 10 to 30. At the same time stocking specifications 50 grams / tail ~ 100 grams / tail of bream, bream species, acre put 50 or so. 2. Fertilizing and feeding The fertilizer can be fertilized properly according to the season, weather, water quality, etc. to cultivate and breed natural food for free breeding. Crabs and oysters are omnivorous animals, their feed snail meat, small trash fish, livestock and poultry viscera and cakes, cereals, bran and pumpkin, potatoes and so on. A small amount of pig liver, porcine pancreas and special compound feed can also be fed on the food table as a bait for quail. The squid is dominated by wild fish and shrimp in the feeding pool. If there are not enough fish, it can be replenished with a certain amount of fresh small fish or small squid. 3. Water quality adjustment The pond is patrolled once a day in the morning and evening. Water is added to oxygen at any time according to water quality, weather, and floating head conditions. In normal conditions, water is added once a week. Each time the amount of water is added to the pond as a result of water erosion, 0.2 to 0.3 meters of water is added for each time. The dissolved oxygen is sufficient and the water level is relatively stable. The transparency is about 0.35 meters, and the water quality reaches “fat, live, "Neat, cool" requirements. 4. Disease prevention and control seedlings are soaked with 3% saline for 10 minutes before stocking, or with 50 mg/elevation of potassium manganate for 2 minutes to 3 minutes, and the whole pool is splashed with lime once a month during the growing season. The effect of adjusting the pH value of the pool water is often disinfected with bleaching powder for fertilizers, live snails, aquatic grasses, baits, and tools. 5. Fishing crabs are harvested after the “Chongyang†festival. In the evening, they are caught by hand in the pond ponds and caught in cages. The captured crabs are washed with clean water and raised in crabs, crabs, or larvae. Then sub-specification, distribution and distribution. Green shrimp are trapped in cages all year round, and adopt methods of catching up and keeping small. As long as they reach the market specifications, they must all be sold. Carp, carp, carp, etc. are sold according to market conditions.鳖 Take dry ponds to catch and raise them for sale.
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