In recent years, with the increasing demand for Monopterus albus in China's urban and rural markets, the seasonal price difference of Monopterus albus has gradually widened. Therefore, buying eels at a low price during the peak period of slaughter, storing them for a period of time and listing them, can earn a great difference. However, if a large number of Monopterus albus die during storage, it will not only make no money, but even lose money. In order to reduce the death of Monopterus albus during storage and breeding, five key points should be grasped: First, select strong, disease-free and injury-free Monopterus albus for storage and breeding. At present, the fishing of Monopterus albus is mainly cage (basket) fishing and hook fishing. Monopterus albus caught in cages (baskets) can be stored except those with scratches on their bodies, while those caught in hooks are not suitable for storage because most of them have internal injuries. Second, pay attention to control the water temperature. The water temperature of Monopterus albus should be controlled at 65438 08℃ ~ 28℃. The difference between the fresh water temperature injected each time and the water temperature in the eel pond shall not exceed 3℃. Third, maintain an appropriate density. The density of Monopterus albus should be determined flexibly according to the number, individual size and pre-storage time of Monopterus albus, and should not be too large. Fourth, change water in time to cool down. Because there is a lot of mucus on the surface of Monopterus albus, if the storage density is high and the water is not changed in time, the mucus will accumulate more and more. When these mucilages decompose naturally, they consume a lot of dissolved oxygen in water and generate heat, which makes the water temperature rise obviously and leads to the death of Monopterus albus. Fifth, feed a proper amount of palatable feed. After the eel is put into the storage tank, if the feed is not palatable, the eel will not eat for a long time, which will easily cause oral diseases, lead to its weakness and emaciation, and finally die. If the feed is palatable, but the feeding amount is too much, it will make Monopterus albus overeat and die of abdominal distension. Therefore, the feed for storing Monopterus albus should be palatable and appropriate. Monopterus albus is suitable for developing courtyard economy in rural areas and making a fortune. However, there are also many problems in aquaculture, which make many farmers, especially the first batch of farmers, suffer losses to varying degrees. Below, the author briefly talks about the problems that should be paid attention to when raising eel for the first time. Those who raise eel for the first time should have a good "six customs". 1. Monopterus albus built in the pond is naturally warm, sheltered from the wind, afraid of light, earthquake and high temperature. Therefore, it is required to build the pond in the sun, avoid the north wind and have convenient water sources. In addition, there should be room for planting evergreen trees and vines around the pond. A scientifically constructed eel pond is the foundation of eel breeding. Generally, cement and brick structures are selected to build a semi-underground pond, the appropriate size is 6 ~ 20m2, and the bottom is paved with concrete, and the depth of the pond is about1~1.5m. In order to prevent Monopterus albus from escaping, the corners of the pond are generally round, and the eaves of the pond protrude inward. It has an inlet, an outlet and an overflow. The water inlet is generally 30 ~ 40 cm above the water surface. The water outlet is installed below the mudline to discharge all the pool water. The overflow port is generally located 20 cm above the mud surface. Drain and overflow should be located opposite to the water inlet, and all water inlets should be equipped with metal mesh to prevent escape. After the above work is completed, dealkalization measures should be taken in the cement pool to avoid the decrease of dissolved oxygen and the increase of pH value in the water body, which will cause harm to the cultured Monopterus albus. The method is to dissolve 1kg calcium superphosphate fertilizer or 20g acid sodium phosphate in each cubic meter of water, soak for 2 days, then rinse with clean water before starting the next work. Secondly, the initial farmers often directly use black mud to lay the bottom, which is not enough, because it is not conducive to the habit of digging holes and digging holes, and it increases the incidence of Monopterus albus. The correct way is to divide the concrete into three layers. The bottom layer is covered with waste plant straws. Generally, coarse fiber plant waste with good toughness, good air permeability and strong corrosion resistance is selected, and the size is required to match, and the weight ratio of coarse stem, medium stem and broken material can be 5: 3: 2. For example, first lay 1 ~ 2 layers of corn stalks, then lay 20cm thick rape stalks (or bean stalks), then lay 3 ~ 5 layers of crisscross corn stalks or sorghum stalks on it, and finally sprinkle a layer of chaff and a layer of quicklime (about 100 m2, 0.5 kg); The middle layer is a hard clay layer for Monopterus albus to dig holes, with a general thickness of about 30 ~ 40cm；; The top layer can be covered with silt, and the thickness is about 15cm. At the same time, sprinkle a thin layer of quicklime, and finally inject water into the bottom material for disinfection. Third, the environment is closed. Because Monopterus albus likes holes with half water and half gas, there should be water and land in the eel pond. This problem is usually solved by setting mud ridges. The mud ridge is narrow at the top and wide at the bottom, with a bottom width of 40cm and a height of about 40cm. Adjacent mud ridges are connected with each other, and the groove surface is about 30cm wide and deep. Pay attention to scrape off the soft mud at the bottom when piling the mud ridge. Then some aquatic plants, such as cash crops such as rice and water chestnut, can be planted on the mud ridge, and it is best to plant suitable Chinese herbal medicines. In addition, in order to keep out the sun, 2 ~ 3 grapes can be planted on the vegetation at the top of the eel pond according to the size, and the vine layout should be dense in the west and sparse in the east. You can also plant other vines such as loofah and gourd to control the light, especially in summer to block the sun in the west. This creates a relatively suitable and stable small ecological environment for the life of Monopterus albus. At present, the seedlings mainly come from the following aspects: first, they are directly captured from the wild, and can be captured in rice fields and shallow ditches from April to 10 every year by eel cages or night lights. After being captured, the sick and injured Monopterus albus will be cleared and then released. This method is especially suitable for new breeders. The second is to buy from the market. When buying from the market, you should choose a physically strong, disease-free and injury-free one; Those who are pale, dim and thin cannot be used as eel species. In addition, the growth rate and weight gain of Monopterus albus with orange color are higher than that of Monopterus albus with cyan color, especially the Monopterus albus with large yellow spots should be preferred. At the same time, it should be noted that the specifications of fry should be basically the same, preferably 20 ~ 50 per kilogram. The specifications were too small and the survival rate was low, so it could not be listed that year. The specification is too large, the weight gain multiple of meat is low, and the net output per unit is not high. 7 ~ 10 days before the eel fry is put into use, clean the pond with 0.2kg quicklime per square meter. The stocking density depends on the situation: sufficient water, small eel species specifications, 3 ~ 6 kg per square meter; If the water source is inconvenient and the eel species are large, 2.5 ~ 5 kg can be stocked per square meter, and loach which accounts for 10% of the total eel weight can also be mixed. 5. Eel species caught from the natural environment generally refuse to eat artificially fed feed, and must be domesticated for a period of time, otherwise it will lead to reproductive failure. The method of domestication and feeding is: Monopterus albus will not be fed for 3-4 days, and then start feeding at night after Monopterus albus is in normal activity. Feeding attractant feed is earthworm, mussel, etc. All of them are favorite food of Monopterus albus, and the dosage can be 65438 0% of the total weight of Monopterus albus. The feeding amount should be adjusted according to the feeding situation of the next day, and the feeding time should be slightly advanced. Because Monopterus albus has a strong selectivity to feed, after successful feeding, other feeds with wide local sources, low price, good palatability and high meat weight gain rate, and even artificial compound feed must be gradually mixed into the feed. It must be noted that animal raw materials are best cooked (except live bait). The feeding place is finally set on a slightly flat table at one end of the mud ridge, and the best feeding time is when the eels can see clearly in the evening. Generally, in a week or so, the training and feeding work is basically completed. Sixth, the water quality is better, and it is necessary to change the water frequently. In general, water should be changed 1 time every 3-5 days in spring and autumn, and every 1 ~ 2 days in summer. Only 1/4 ~ 1/2 can be changed at a time, and the inlet temperature should be as close to the pool as possible. It is better to change the water at noon, and it is best to change it when there is sunshine. Pay attention to cleaning food countertops and contaminated places when changing water. It is better to keep running water if possible. The performance of good water quality is that Monopterus albus will make a "squeaky" sound when eating. The water level in the pool should be properly adjusted according to the water temperature, season and weather conditions, and should generally be controlled within the range of 6 ~ 25 cm. The principle is to be shallow at low temperature and moderately deep at high temperature. Before and after the Spring Festival every year, the market price of Monopterus albus is more than twice that of April-September, and few people care about it. Therefore, collecting wild Monopterus albus on a large scale in a short time in autumn and selling it before and after the Spring Festival can make huge profits. The project has the advantages of less investment in fixed assets, simple operation and fast capital turnover, which is a good way for farmers to increase their income and get rich. The local practices are briefly introduced as follows: 1. Choose a good water area to set the cage. The best water area for setting cages is ponds, followed by lakes, rivers and reservoirs with stable water levels, but no matter what kind of water body, it must have sufficient water, good water quality, no pollution and good illumination. The cages are made of polyethylene nets, each with an area of 10-20m2 and a depth of1-1.2m. The cages in the water are fixed with wooden stakes or floated with oil drums. Before stocking Monopterus albus, a large number of Alternanthera philoxeroides or oil weeds were raised in the cage, and the whole cage was filled with them for Monopterus albus to inhabit. 2. Fully grasp the quality of boxed Monopterus albus. The stocking time is generally completed before September, when the number of Monopterus albus is large and the purchase price is low every year. The purpose of temporary rearing is to maintain weight and obtain seasonal price difference, regardless of growth and weight gain. Therefore, the varieties adopted do not need to be deliberately pursued, but just like the conventional feeding of eel fry, the quality must be strictly controlled, and it is required to purchase cages to capture the individuals who are disease-free and harmless for temporary feeding to ensure the survival rate. It should be noted that the high temperature in autumn can easily lead to fever of Monopterus albus, resulting in a large number of deaths. The eel in the eel catcher's house should be changed more than twice a day, and kept in the shade when it is temporarily raised. In winter, you should buy eels that have been kept in the eel catcher's house for no more than 2 days. Eels should be collected in the morning when the temperature is relatively low, and the transportation time should be as short as possible. The weight of water and eel in the transport bucket should be half. The recovered Monopterus albus was put into the box in time. 3. Correct socks. Monopterus albus collected should be put in different cages in at least three grades. Disinfect with 3%-5% salt solution for 5- 10 minutes before entering the box. The stocking density is generally 2.5-5 kg per square meter of cage, with large stocking weight and small stocking weight. 4. Temporary support management. (1) Feeding: Monopterus albus is fed with fresh fish minced by a meat grinder after 3 days in the box, once a night, and the bait is fed to aquatic plants, with 3-4 feeding points in each box, and the number is subject to each eating. In the middle and lower reaches of the Yangtze River, 10 (below water temperature 15℃) can basically be stopped. (2) Anti-freezing: As the temperature gradually decreases, it is necessary to deepen the depth of the pool water in advance and keep the cage with sufficient aquatic plants. If aquatic plants have pests and diseases, they should be treated with pesticides in time. ③ Anti-interference: When the temperature is low in winter, the mobility of Monopterus albus is extremely poor, so we should resolutely put an end to turning over aquatic plants and stirring the pool water, otherwise it will make Monopterus albus fall into the bottom of the box and cannot swim back to the aquatic plants to inhabit, resulting in the death of Monopterus albus due to lack of oxygen. 5. Seize the opportunity and sell at the right time. In winter, it is necessary to know the prices of major markets in China and the inventory of major aquaculture areas in time, so as to predict the changing trend of market prices, seize the opportunity to sell at the right time and obtain the best income.