The total output value of fish and poultry is up to 38,000 yuan.
The polyculture of ponds and fishes can produce 300 kg of Japanese sturgeon, 1000 kg of barracuda, 100 kg of white bream, and 150 kg of herring. The yield per mu is 38,000.
Tongkou Construction
Choose fish ponds with sufficient water sources, good water quality, convenient drainage and irrigation, and the requirements for the adult fish pond area are 60 mu -100 mu, and the pond water depth is the most suitable for 2.5 meters. Generally used from the east to the west of the rectangle, the ratio of length to width of the fish pond is 2:1 or 3:2, the slope ratio of 1:2, the bottom of the pond is best loam, sandy loam soil, followed by soil. The slope of the bottom of the pool is 5:1000, with high and low rows, and the inlet and outlet are separated. The height of the pond exceeds the historical maximum water level by more than 0.5 meters, and the width of the dome is about 5 meters. The water, electricity, roads and other infrastructures are fully equipped, and they are equipped with aerators, feeders, etc.
Prepare for stocking
1. Pond clearing. The pond is cleared in the winter. First, the fish in the pool should be pulled as far as possible (to avoid losing the dry pool), and then the pool water should be drained to remove excess silt at the bottom of the pool. The ice at the bottom of the pond was exposed to ice for several days to reduce the pests and diseases, loosen the soil and accelerate the decomposition of organic matter. The fish ponds were cleaned thoroughly with quick lime in front of the pond. The amount was 100 kg/mu (dry clear pond). New water was injected on the fifth day after the clear pond.
2. Water injection and fertilization. Barracuda species were stocked with fermented organic fertilizer in the corners of the pond 10 days before stocking, and the amount of fertilizer was 100 kg/mu. Fertilizer should be disinfected by bleaching powder at a rate of 1%. Then, new water is injected and filtered with polyethylene screens when entering the water. The water depth is about 1.5 meters.
3. Adjust the salinity. The species of barracuda must be adapted to the aquaculture water. After sufficient desalination, the salinity is generally required to be below 2. If the salinity of the seedling cultivation pond and the rearing pond differ greatly, the salinity of the seedling cultivation pond should be gradually adjusted until it is cultivated. Cheng Chi approached.
Fish species stocking
In February and April of the year, artificial breeding of high-quality barracuda species will be conducted. About 0.2 per mu of stocking species will be 20 tassels per kilogram, and the stocking size will be about 0.5 kg/150 kg of Chinese sturgeon species, and the specification is 250. About 30 squid species are stipulated in the left and right sides, 40 species are white bream species with a size of about 200 g/tail, and 20 species are squid species with a size of about 1,500 g/tail. Before stocking, soak in potassium permanganate 20 mg/L for 5 minutes to 10 minutes. It is worth noting that the Japanese oyster species in Japan should be divided between male and female to prevent mutual killing and affect the aquaculture production and economic benefits.
Feed feeding
Feeding should be based on the "four definite" feeding method, while throwing high-quality barracuda feed, but also regularly add 1% immune polysaccharide or vitamin C feeding. Daily feeding standards, juvenile fish stage accounted for about 8% -10% of fish weight, adult fish stage between 5% -7%. The total price of the protein content of the pellets is 30%. The size of the bait pellets changes with the growth of the fish. It is advisable to use palatable ingredients. Daily injections are used twice to three times. The Japanese sturgeon is mainly fed with low-value seawater miscellaneous fish, supplemented with freshwater miscellaneous fish, and the daily feeding amount is about 5% -10% of the carcass weight. The feed should be fed on the food table, and each day 2 times, 1 time in the afternoon.
Water quality management
Raise the pond once every 7 days - 10 days
The new water, each about 10cm -15cm; at the same time, every 20 days or so, 1 lime solution is applied to the pond, each dosage is 15kg per mu; 1 superphosphate is applied every 15 days, each mu. The dosage is 20 kg-25 kg. Placing quicklime for 3 days to 5 days before calcium phosphate can be applied to prevent excessive alkalinity and reduce fertilizer efficiency. Keep the pool water "fertile, live, tender and cool" with a transparency of about 25 cm. In the high temperature season of summer, Bacillus spp. is used once every 15 days to decompose organic matter in ponds, reduce oxygen consumption of organic matter, improve water quality, and kill or inhibit pathogenic microorganisms. In case of weather changes, take water, change water, and increase oxygen. Aerators should be opened at a proper time. It should be started at noon on a sunny day for 2 hours to 3 hours. It should be switched on 3 hours to 5 hours in the early hours of the morning in the early days of culture.
Daily management
Adhere to the morning and evening patrols to observe changes in water color and fish dynamics. Check the food table and food field once a day in the afternoon to understand the fish’s feeding situation, so as to establish the amount of feeding on the next day, clean the food table frequently, and sterilize the food table every 2 weeks with bleaching powder.
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