First, the material method
l. Pond construction (l) Site selection and requirements: The test pond is the new open pond in Tadashi after his house, close to the water source, with an area of ​​1.5 mu, a depth of 1.5m, a slope ratio of 1:1.5, and a pond raft above the water surface of 60cm. And it's more broad.
(2) Barrier facilities: Wuhuan has a strong ability to jump, especially in thunderstorms, and Uzbekistan will flee with rain. Therefore, around the pond with polyethylene sheeting, the bottom buried in the soil 10cm, the upper part of the 埂1.5n ~ 2m, conditional and then add a fence outside the fence for the protection of fences, anti-theft effect.
(3) Set up concealed objects: In the summer, the water hyacinth should be stocked on one or both sides of the pool, accounting for 1/10 of the total area of ​​the pond, and provide rest places for Wuhuan, and it can also block the sun and reduce the water temperature.
2. Sources and stocking of seedlings (l) Sources and requirements: The main acquisition is young seedlings of black peony that are harvested from natural lakes and rivers. The specifications are basically the same, the body is robust, and the fish body surface scales are intact without damage. Try to avoid too large a gap in specifications to prevent individuals from catching food.
(2) Time and quantity of stocking: From mid-to-late March to early April 2000, a total of 118.5 kg of Chinese black buckwheat species with an average size of 8 tails per kg was stocked.
(3) Set-up conditions: 1 White pheasant 3 kg (40/kg); 2 bream 2 kg (60/kg); 3 Alfalfa silver bream 20 kg (20/kg); 4 larvae bream 1 kg (70 larvae) /kg).
(4) Disinfection: All fish species are sterilized with 5% saline for 5 to 10 minutes before stocking.
3 Feeding (1) Type and source of bait: The bait of black locust is dominated by animal baits such as small ragfish and shrimp. It is mainly acquired from the Fisheries Fisheries Department in the Lake District and is booked in advance every day.
1 Feeding: Do not feed immediately after stocking and wait for a period of time to allow them to adapt to the pond environment. When the water temperature reaches 15°C or higher, feed the bait again. At the beginning of feeding, a small amount of fish is fed in a fixed position in the pond to acclimate its own initiative to ingest food. Afterwards, the amount of feeding is gradually increased according to the feeding conditions of the day. The total pond fish body weight is generally 6% to 8%. Sets of fish do not feed bait and feed mainly on plankton and bait. Feeding is carried out at 9:00 a.m. every day, and the "Four Sets" will be implemented. A total of 2265kg of small fish and shrimps were fed throughout the year.
(3) Requirement: Umbilica food is vigorous at 25°C to 30°C. In July, August and September, it is the peak of its food intake. The amount of bait should be increased appropriately, but it can be eaten as it is. Food intake decreased gradually in October. Feeding persisted until early November.
4. Management (1) Water quality: Umbellaria has low requirements for water quality, and the high-density main breeding needs no worry about flooding ponds. The normal water depth is controlled at about 1.2m, and the high temperature season is controlled at about 1.5m. In addition to occasional floating heads during the rearing period, the black baboon never floated over.
(2) Disease prevention and control: T. davidianus eats large amount, excrement is much, pool water is easy to be fattened, and a large number of plankton and red worms in the water are easy to kill once per month with 90% crystal trichlorfon, and the dosage is 0.6ppm.
(3) Note: Whenever new water is added. When a large amount of rainfall, high temperature, or steep fall, the food intake of Wuji will decrease, and the amount of feeding should be properly adjusted.
(4) Anti-escape and anti-theft: In the thunderstorm and flood season, it is necessary to prevent pool collapse and escape fish. There must be someone watching at night.
Second, the harvest and benefit analysis
At the end of 2000, a total of 618 kg of Wuhuan was caught, which was less than the listed size of Wuqi 17.5kg; Baiyu 122.5kg; carp 82.5kg; silver carp 150kg; carp 50kg, all up to commercial specifications, of which Ukrainian per mu output accounted for 61 %. A total of 11,562 yuan in total income was obtained, minus the cost of 5040 yuan for fish species and bait, net income was 6,522 yuan, and the average net income was 4,348 yuan. The input-output ratio is 1:2.
Third, questions and discussions
1. The main pond raises the Ukrainian demand for the size of the pond area is not high, suitable for a family breeding, is a small investment, quick, high efficiency of the rich project. The village has 25 households raising Wuhuan, covering an area of ​​655 acres.
2, the appropriate amount of fertilizer fish, omnivorous fish can use a large number of plankton in ponds and black razor clams of residual food and excrement, play to purify water quality, comprehensive utilization, increase efficiency and other effects. Due to the abundant feed of Chinese black quail and the rapid growth of the fish, there is no need to worry about the set of fishes being eaten by black quail.
3. Since Umberria is mainly based on animal foods such as small fish and shrimps, it should be based on the actual local conditions, taking into account the abundance of the source of the bait, moderate breeding, and should not be blindly developed.
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Appearance
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Model Number
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Country of Origin
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Package
5kg in aseptic bag, and two bags per paper carton
Storage
Normal temperature for 12 months.
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