Now around 25 yuan on the market. How many tails are related to the age of the month. Monopterus albus, also known as long fish, has strong adaptability, strong living ability, hunger tolerance, can survive in all kinds of fresh water and is easy to manage. Generally, every kilogram of eel fry can grow into 5- 10 kg of adult eel. Artificial culture of Monopterus albus is a way to get rich, which saves land and water and has high efficiency. 1. Construction of eel pond: Choose sunny open spaces, fields and old ditches to build ponds. In order to change water conveniently, it is best to build a pool in a place with water source protection. Cement pool, brick pool, stone pool and concrete pool are all jointed with cement or concrete, so there is no water leakage at the bottom and around the pool, and eels are not easy to swim. The size of the eel pond is determined according to the breeding scale, but it can be large or small, ranging from several square meters to dozens of square meters. Generally, the size of swimming pool is 20-30 square meters, and the pool depth is 1 meter. The shape of the left pool depends on the place. In spring, summer and autumn, the water depth is generally kept at 10- 15 cm, and rain is discharged once in winter. In order to facilitate water exchange and drainage, water inlets or drainage pipes are set at the bottom and above the eel pond. And install a fish baffle. After the bottom of the pool is watertight, it should be paved with 3-5 inches of soil, which can be made of river mud and grass retting (in some places, the bottom of the pool is as thick as 60 cm), and stones should be paved at the center or four corners of the pool bottom to keep the eel warm or enjoy the cool, so as to adapt to the settling habits of the eel. The optimum temperature of pool water is 10-25℃. Plant trees, melons, bamboos, sheds, or a few goldenrods in the fourth pond to reduce the sunshine in summer. In summer, some aquatic plants, such as water hyacinth, can be appropriately planted in the pond for Monopterus albus to escape the heat. Second, seed selection: select improved varieties, with yellow as the best, followed by cyan. It is best to contact eel farmers and buy an eel with uniform size, strong body and no disease or injury, or buy it in the market or catch it in the wild. The best is about 0/5-25 eel per catty/kloc. After the sting (March 5th and 6th), the seeds should be sown in March and April, generally 2? 5-3 kg, if the feeding conditions are good, you can put about 5- 10 kg. When sowing, put one or two toads in each pond for polyculture, which can prevent common diseases of Monopterus albus, and put some melons or grass balls in the pond to facilitate the hiding of Monopterus albus. The source of eel species can also be used to catch young eels (or caged eels) 10 by hand in mud holes in paddy fields or shallow waters from April to June. However, when fishing with bare hands, you should wear gauze gloves and hold the first half of the eel with your middle finger and forefinger, so as to avoid internal injuries of the young eel caught by the iron hook and hinder the breeding. 3. Feeding bait: Monopterus albus raised in the pond must be fed with bait for intensive cultivation because of its limited range of activities. The raised Monopterus albus eats mussel meat, snail meat, small miscellaneous fish and shrimp, internal organs of livestock and poultry, moth-eaten pests, silkworm chrysalis, leftovers from food factories, rapeseed cakes, and likes artificially propagated earthworms and flies. You can also use lights to attract moths or pig blood as feed to attract flies. Monopterus albus is a carnivorous fish and very greedy. When the bait is seriously insufficient, Monopterus albus has the habit of killing each other or eating more and eating less. Because Monopterus albus doesn't come out for activities during the day, it is better to feed it at 8- 10 every night. Mainly based on animal bait, supplemented by plant bait (such as sweet and sour food such as skin, rice, melons and fruits). Generally, it is fed once a day, and the feeding amount is 3-5% of the body weight of Monopterus albus in the early stage, and it also increases with the body weight of Monopterus albus. It's best to spread the bait evenly all over the pool. When the bait is insufficient, some duckweed and mulberry leaves can be added to catch the golden season of eel growth from spring to winter and feed it in time. In order to prevent Monopterus albus from stopping eating, it is required to feed mixed feed. The feeding principle is new Monopterus albus, which is rich in nutrition, diverse and exhausted. Human and animal waste must be decomposed before it can be spilled and fed. It is forbidden to use rancid and moldy food such as distiller's grains, bean curd dregs and potato dregs. If it is fed at a fixed time, it will be convenient for eels to eat and fish artificially. The next morning after feeding, remove the residual bait or inject new eel water to keep more oxygen in the pool. Of course, feeding should be moderate, too much will make the water quality worse, and too little will lead to insufficient feeding. Four, refined management: management should achieve "three checks and three defenses" to check the water quality, keep the water fresh, and keep the swimming pool clean and hygienic. Observe frequently. If the water quality has a slight odor or abnormality, change the water immediately. If the water source is poor, change the water every 5-8 days, so as to change the water regularly. When the weather is hot and the water temperature is too high, it is necessary to build a shade shed to properly cover or deepen the water level. Try not to change it in winter. Some loaches can be mixed in the pool. Stocking1-2kg/m2 can improve water quality and prevent eel from intertwining. Second, when checking the bait situation, we should pay attention to the observation of lack of bait, single bait and mixed bait, and pay attention to the fact that when there is lightning and rain, the eel is scared to flee, not eating, not entering the hole; When there is a lack of bait, Monopterus albus will chase after each other and keep secrets from each other. Feed new bait from less to more. Third, check the condition, as long as prevention in advance, pay attention to observation, eel disease can be controlled. The "three defenses" are: first, to prevent escape, the pool should be built firmly to prevent floods from rushing into the pool or eels from turning over the pool, and to drain water during thunderstorms to prevent escape. The second is to prevent injuries, and geese and ducks are not allowed to enter the pool. Third, anti-virus. It is forbidden to put cigarette butts, fertilizers and pesticides into the pond, especially when fertilizers and pesticides have serious harm to fish. Once poisoning is found, the water in the pool should be completely drained, and the poisoned water and dirt in the pool should be washed with new water. Then mash garlic and add water, and put it into the pool according to 5 grams per square meter to avoid a large number of Monopterus albus deaths. 5. Disease prevention: Monopterus albus often has fever, cold, dermatosis and capillary nematodiasis. Fever is caused by high density of Monopterus albus. The control method is that a small amount of loach can be mixed in the pool (it is appropriate to mix 1 loach every 200 eels). When Monopterus albus is sick, change the water immediately, or add seven ten thousandths of copper sulfate solution to the pool, which can overflow about one or two ounces per square meter. Monopterus albus caught a cold because of the low temperature of the injected fresh water. Before changing water with spring water, well water, mine water or reservoir water with extremely low temperature, let the water temperature rise before putting it into the pool. In late autumn and early winter, when the water temperature is below 65438 02℃, Monopterus albus begins to overwinter at a depth of about 30 cm below the soil. At this time, it is necessary to drain the pool water, only keep the soil moist, and cover the soil with a layer of straw about 5 inches to prevent freezing. Plum blossom spots the size of soybeans or broad beans appear on the back of Monopterus albus, which is a common disease of Monopterus albus. The prevention method is to often put some toads in the eel pond, because the secretion of toads can prevent the disease. If Monopterus albus has this disease, immediately take 1-2 peeled toads, tie them with ropes and drag them in the pool for a few times to get rid of the disease. Dermatovirus disease is caused by mold infection caused by mutual biting of Monopterus albus or invasion of enemy organisms. The sick eel was born with "white hair", lost appetite and died of emaciation. Before Monopterus albus enters the pond, the pond should be cleaned with quicklime for disinfection. When sick eels are found, four-tenths of a mixture of salt and baking soda can be sprinkled all over the pool. Monopterus albus is prone to water mold at the initial stage of feeding, so it can be coated with 5% iodine or soaked in 3-5% salt solution for 3-4 minutes. Capillary nematodiasis of Monopterus albus is caused by capillary nematodes parasitic in the intestine of Monopterus albus, which destroys the intestinal wall tissue, causes intestinal wall inflammation and leads to emaciation and death of Monopterus albus. It is also necessary to clean the pond with quicklime to kill eggs before raising eels. When this eel disease was found, 5g of 90% trichlorfon crystal was mixed with 3kg of bean cake powder to make granules per100kg of eel. 6. Reproduction and storage: Monopterus albus has the characteristics of sexual transformation, and it is female from embryo to first sexual maturity. Monopterus albus began to mature sexually at the age of two months, and the fish first became female and then male. When its body length is about 10 cm, it is generally female. Grow to about 5 cm, lay eggs for the first time, and then gradually reverse. When the body length reaches about 35 cm, it is half male and half female, and when the body length exceeds 53 cm, it is male. The breeding season of Monopterus albus is from April to August, and the peak of spawning is from May to June. Put the grain leaves in the pool to promote spawning. Generally about 7 days, the eggs naturally hatch into young eels. Leaves with eggs should be put in another eel pond so that they can be fed with concentrated feed after hatching. In order to prevent adult eels and voles from harming young eels, loofah and grass balls placed in the pond should not be fished out during the breeding period, so that young eels can live in sheltered places. As long as it is properly stored and transported, the survival rate of eel fry can reach over 90%. The method is that the laundry list should be disinfected and the inner pad should not have mildew film. Each basket weighs about 50 Jin. There is no water and no seal in the basket to prevent lack of oxygen. Put a proper amount of soap mud in the basket, break four eggs in each basket every day and pour them into the basket, and stir them by hand to maintain certain nutrition and moisture. Put loach 1-2 kg in each basket. Put your hand into the basket and stir it every 12 hour to avoid fever. When fishing Monopterus albus, we must take the big one away and leave the small one behind, so that there can be enough seedlings in the pond to feed continuously. It is best to fish with a hook, that is, put the earthworm on the hook and fish in the eel hole. You can also fish with net 1-2 times first, then fish with dry water, and then rinse with clear water. The net for catching Monopterus albus is generally a summer flower net for catching fish species. When Monopterus albus hibernates, it can be dug out and caught. Artificial breeding of loach can use waste ponds or vegetable gardens in front of and behind houses, or build ponds, which need warmth and ventilation, convenient transportation, sufficient water sources and convenient water intake and drainage. The quality of seeds is the key. Without good seeds, no matter how well we do in other areas, it will also have a certain impact on farmers. Seedling requires strong physique, no disease or injury, smooth body surface, rich mucus, neat specifications and strong mobility. Attention should be paid to eliminating the injured loach species on the body surface or in the mouth. When feeding, plant feeds such as wheat bran, rice bran, peanut cake, bean cake, vegetable cake, earthworm, fly maggot and duckweed can be fed, and a small amount of fish meal and silkworm chrysalis can be properly matched. Usually pay attention to feeding and fertilization, such as leftovers, livestock manure and so on. At the same time, we must control the water quality. When loach is found to be "swallowed" out of the water, it means that the water body is short of oxygen, so fertilization should be stopped and fresh water should be replaced. Planting aquatic plants in ponds helps to shade and improve water quality. With aquatic plants, there will be some benthos in the roots, which will provide natural bait for loach. Daily management patrol the pond once every morning and evening to check the activities, feeding and diseases of loach, and observe whether there is leakage in the breeding pond and whether the loach escapes. The diseases of loach should be mainly prevented. Generally speaking, as long as the water quality is fresh, loach is not so easy to get sick. In aquaculture, moderate fertilization can also keep plankton in good condition, increase dissolved oxygen and nutrients in water, and thus cultivate good water quality. Earthworms are omnivorous animals with a wide range of feed sources, including distiller's grains, peels, vegetable leaves and domestic garbage. Pig manure can be used to raise earthworms. Fresh pig manure is collected and piled up, and each pile is spread out and dried to 70%. Then add 20% soil, 3% wheat bran and rice bran, seal the pile with plastic film, and the pig manure will be fermented in about 7 days. Then spread the fermented pig manure in the pit, cover it with grass or grass curtain and keep it moist for about 20 days.