The polyculture technology of fish gills can reasonably use the ecological space of ponds, natural foods, and artificially fed feeds to achieve the objective of improving water quality, promoting coexistence of fish gills, and improving the overall benefits of ponds. The main technical measures are now described as follows:
I. Pond Conditions and Facilities
The pond is best chosen for quietness, leeward sunshine, convenient drainage and irrigation, and good water and water quality conditions, and there is no worry about drought and flood; the water surface area is 2 to 5 mu and the pool depth is 1.5 to 2 meters; The anti-theft and anti-theft nets with a height of centimeters and inclined to the inside of the pond are provided with 2 to 3 arched food tables in the pond for feeding and drying.
Second, seed stocking
1. Clear pond disinfection. Before the pond is stocked, 60-80 kg of lime water shall be splashed into the entire pond.
2. The number of stocking. The 800-1000 species of big-species fish reared on a water-level per acre for a year, of which 55% are carp, 10% are carp, 20% are grass carp and carp, 15% are carp and carp; in April to May A total of 60-70 pups with 180 g of rations are placed per mu of water. The stocking cubs must be of neat size, robust in physique, responsive, and free from disease, injury, and lustre; the basal part of the plastron and limbs should be light yellow.
3. Seed disinfection. In front of the fish ponds, parasites must be soaked in 3% to 4% saline or 0.2mg/L worm-infested water for about 15 minutes, and potassium permanganate at a concentration of 20mg/L can be used for the larvae. Or nitrofurazone soak for 10-15 minutes, then the lower pond.
Third, feeding and management
1. Feed the bait. The polyculture of fish gizzards is mainly based on bait-feeding fish, and some herbivorous fish feeds are appropriate. Artificial feed is mainly fed: snails, fresh fish, quail, livestock slaughtered and processed leftovers or part of artificial feed, a small amount of investment in some melons, vegetables, bait on the arched food table. The amount of wolfberry that is fed daily is 8% to 12% of its body weight. Each day is fed at about 9:00 am and 5:00 pm.
2. Manage water quality. Change the water once every 5 to 7 days, change the amount of water every 30 centimeters or so, and use lime for 25 mg/litre every 15 to 20 days. In addition, in the corner of the pond, duckweed can be cultured in an area of ​​5% to 8% of the pond area, which can play a role in regulating water quality.
3. Daily management. Stick to the morning and evening patrols on a daily basis, pay attention to the changes in water quality, fish feeding and activities, and do a good job of preventing escape, preventing theft, and preventing disease. Once the disease is found, timely treatment, the right medicine, to reduce the loss.
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