Carps mainly live in the middle and lower layers of rivers, lakes, reservoirs and pits, and they are mostly active in the coastal areas. They are often hidden in grass, under rocks, or in deep water during the day, and they often feed at night. After winter, he lived in deep water or in the sludge for winter, and the degree of feeding decreased. In carnivorous fish, prey are mostly small-sized fish such as squid, squid, goby, rayhead, squid, and muddy, as well as shrimp and aquatic insects. To eat mainly, the role of teeth is to prevent food from escaping. Carp is the most widely distributed fish in the family Polygonaceae.
I. Fish pond site selection
The cultivation of local pond horn fish is very important. The site selection of the fish pond is very important. The condition of the fish pond not only affects the daily management, but also affects the economic benefits of breeding. The location of the fish pond should be selected from the front of the house with water source guarantee, good water quality and convenient irrigation and drainage, which is convenient for daily management. At the same time, the pond should be as close as possible to the orchard or planted crop to fully exert the function of the trapping lamp.
Second, the fish pond construction
l. You can choose to dig a pond or build a pool on the ground according to the terrain. The digging type built pool is beneficial to the stable temperature of the water division winter insulation, which is conducive to the growth of fish, but there must be effective drainage conditions. The practice is to dig into the ground about 70 centimeters. The ground is about 50 centimeters high with bricks. The depth of the pool is about 1.2 meters. The practice of building pools on the ground is to build a pool of about 1. 2 meters high on the ground with bricks. The area of ​​the fish pond is 10-20 square meters, and the shape is generally rectangular.
2, the fish pond should be set up, not drain â–¡. The upper drainage is located about 25-30 cm away from the edge of the pool wall. It is used to prevent flooding of the pool during the rainy season. Fish in pond corners escapes with water. Drainage â–¡ is used to change the water daily and to catch fish.
3, the fish pond is better with brick structure, the pool wall, the bottom of the pool smooth with cement mortar, no water leakage, water depth is about 0.9 meters, put the bottom of the pool - a set number of tiles, tile altar as artificial caves, ponds Horn fish inhabit.
Third, fish pond disinfection
Before the fry is released, the pool must be sterilized. There are two methods. - The dry pool method, dry or drain the pool water. After the sun exposure, the golden pool uniformly disperses the quicklime. The amount of 75g per square meter area is used. Water, place it for 4-5 days before changing to fresh water, and let it be ready for release after 2-3 days. The second is the water-carrying method. Each cubic meter of water used 220g of quicklime, which will pour the calcined pulp into the entire pool and evenly pour the liquor. After the toxicity of the quicklime disappears, the water quality of the fertilizer will start to be cultivated.
Check the method of disappearing the toxicity of lime:
l. Check the ph value of the pool water. If the ph value drops below 7, it means that the toxicity of quicklime has disappeared.
2. Observe that there is no water in the pool. If there is water, it shows that the toxicity has disappeared.
Fourth, fertilization water quality
After the disinfection of the fish pond is completed, the fertilization water quality is started about the week before the fry stocking. After the injection of water reaches 0.9, the biogas residue can be used as the base fertilizer for the fish pond, and about 250 g of biogas residue is put into the fish pond per square meter.
Fifth, stocking fry
The fish fry for 6 days should be free from injury, illness, and liveliness. Fish species should be more than 3cm in size, and they should be as far as possible so that they do not kill each other. In the daily management work, disease prevention work is particularly important, and fish disinfection must be done when the fry is released. The method is to dilute 1 kilogram of salt with 30 kilograms of water, soak the fish fry in salt water for 5 minutes before placing the seedlings. Put a small amount of water into the container before putting the seedlings, and put a few fry into the test. If the fry-day is normal, the fry can be placed in the pond. Restocking time is appropriate in sunny days, and 50-l00 fry of 3-5 cm body length can be placed per square meter.
Sixth, feeding feeding
The fish pond rearing pond angle fish is mainly fed with commercial feed, combined with the addition of biogas residue, biogas slurry and insect traps. Feeding - It is time to feed regularly, feed every morning and afternoon. The second is the quantitative measurement. Each feeding amount is preferably 3-4 hours after feeding, and the daily feeding amount is about 5% of the total weight of the fish in the pond. On this basis, the feeding condition of the weather and the fish is appropriate. Increase or decrease.
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