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2, clear pond disinfection. The completed Dianchi Lake will undergo drug clearing ponds. The commonly used clear pond drugs in the production process include quicklime and bleaching powder. (1) Lime clear pond: Causing calcined water can kill fish, aquatic insects and bacteria and other diseased bodies. The use of quick-lime clear pond not only has the function of harm removal and disinfestation, but also improves the water quality and increases the fertility of the sediment. The amount of quicklime should be determined according to the depth of the water. Normally the depth of 7-10 cm in the dry pool uses 60-75 kg of water per mu with a depth of 1 meter and 125-150 kg per mu. (2) Bleached clear ponds: Bleached water can release primary chlorine when it is in contact with water, which has a strong effect of sterilizing and destroying harmful organisms. When dry ponds use 4-5 kilograms per mu; when clear ponds are used, water depths of 1 meter use 12.5-15 kilograms, and the whole pool is splashed with water.
3, fertilizer underwater pond. Before 3-4 days of stocking, basal fertiliser and livestock manure are applied at a rate of 600-800 kilograms per mu. Premature fertilization will produce many large-scale zooplankton, with small larvae of small larvae that cannot be swallowed; After Xia Tang could not find enough food to eat. If proper fertilization, adequate water and fertilizer, these palatability baits are very rich, after the seedlings planted the pool, the survival rate is high, fast growth.
4, seed disinfection. To reduce the disease, use 8PPM copper sulfate or 10PPM bleach solution at a water temperature of 10-15°C, soak for 20-30 minutes before release, or soak it with 3% saline for about 30 minutes to remove some of the pathogens. Increase disease resistance.
5. The stocking density of quail seedlings: When the pond grows pupa, the stocking amount of the quail seed should be 3-4 cm per acre and 1.2-1.6 million tails. If there is a pond with flowing water conditions, more can be put, and vice versa. some.
6, science feeding: After the species into the pool, but also according to the pond water quality, often throwing some organic fertilizer, the cultivation of water in addition to the natural food. Artificial diets (rice bran, bean cake, bean dregs, wheat, and distiller's grains) are also fed daily. Daily feeding amount is 1% of the total weight of loach in March, 4% from April to June, and 10% from July to August. In September and October, it was 4%. The method of feeding was twice a day, one in the morning and one in the afternoon, and a feed table was set up on the water surface in the pond, with few people and livestock, and 1.5 to 2 meters from the shore, and the feed was placed on it. On the stage, focusing on feeding and feeding, it is beneficial for quail to feed evenly, which can reduce the waste of food and facilitate the inspection of the food intake and growth of quails.
7, the kind of grass summer. Change water and oxygen. In the Dianchi Lake, the appropriate amount of water lettuce or water peanuts should be cultivated. The coverage of the grass should be controlled at about 15%, and direct sunlight should be avoided to provide a habitat for the earthworms to facilitate feeding and growth. Focus on observing changes in the pool water and muddy activities. If the pool water is dark brown or a lot of mud will be released from the water surface to “eat the airâ€, you should immediately inject new water to increase the amount of dissolved oxygen in the water.
8, to prevent escape. Inlet and outfalls prevent escape facilities and often check that the facilities are in good condition. In particular, when there are thunderstorms in summer, there will be no small holes in the pool wall. If there is a hole in the wall of the fingertips, the mud will escape from it, especially at night.
9, fishing methods. The loach has the characteristics of drilling into the soil, so it is not as easy to fish as other fish. For this feature of muddy, the following fishing methods can be taken. (1) Flush fishing method; a fishing net is placed near the inlet, the length of the net can be 3-4 times the width of the general inlet according to the size of the inlet, the mesh size is 1.5-2 cm, and the four net angles The rope is tied up, then the water is discharged from the inlet, and the micro-water is used to stimulate the loach to gradually gather near the inlet. After a certain period of time, the pre-embedded net can be lifted and caught. (2) Prey bait trap method: Put the sauteed rice bran or wheat in a special bamboo cage, place the cage around the edge of the pool, and lure the loach into the cage. (3) Drainage fishing method: drained pool water is used, and then the bottom of the pool is divided into several small pieces. In the middle, it is higher than the drainage ditch, and the muddy mud will be concentrated in the drainage ditch. At this time, fishing can be done by hand dip net.
Loach farming technology
1. Completed Dianchi Lake: The rearing pond should be near enough water, convenient for drainage and irrigation, so as to fill water regularly; the area is 300-500 square meters, and the maximum is not more than 2 acres; the depth of the pool is 40-60 centimeters, and the drainage is Around the mouth, digging fish ponds of about 6 to 10 square meters deep and 60 to 80 centimeters deep, in order to facilitate stocking and fishing. The pool banks must be neat and straight and hard and be covered with a plastic film to prevent muddy drilling. The hole escapes; the bottom of the pond must be solid, and there should be 20-30 cm of mud, and the depth should be uniform.