The benefit of cultivating snail is remarkable. Specializing in the cultivation of river snail, the output of 667㎡ can reach 400kg, and the current market price is 3 ~ 4 yuan /kg. In terms of 3.5 yuan /kg, the output value of 667㎡ can reach 1400 yuan. In addition, a small amount of grass carp can be mixed in the snail pond to increase the benefit per unit area of the snail pond. Because snail culture does not need to feed a lot of bait, the cost of bait is also very low. Therefore, the net profit of snail culture is about 1000 yuan /667㎡, and the benefit is considerable. Let's take a look at how Zhang Guoqing, a farmer in Fujian Province, developed snails and became rich. Zhang Guoqing is a villager in Chenjia Village, Yijiaxiang Town, Jianning County, Sanming City, Fujian Province. He is a professional snail farmer. At the beginning, the superiors in the village felt that farming in the conventional way was not effective and innovative, so this year the village promoted snail farming. When Zhang Guoqing heard about it, he was very interested, and he signed up for the first one. The village organized them to train and sent them to other places for study. This training made Zhang Guoqing an eye-opener. He found that others earned more from farming snails in an acre than from planting rice in several acres. After coming back, Zhang Guoqing rented more than 60 acres of mountain fields. He told us that if we harvest 100 kilograms of snails in autumn and winter, if we calculate them at 20 yuan a kilogram, we can earn more than 2,000 yuan per acre. Next, he also plans to plant Redmi and organic rice in the field, and then raise the rice fish, which can earn an extra 600 yuan per mu. In addition, he also wants to wait until he succeeds to set up a cooperative to lead people to get rich. The prospect of snail breeding is very good, and it can be developed into catering industry, and the breeding profit is considerable. How to raise snail to produce high yield 1, living habits Snail likes to live in water with warm winter and cool summer, soft sediment, rich bait and fresh water quality, especially in places with flowing water. Snail likes to live in water environment with rich humus in sediment, such as lakes, ponds, fields or slow-flowing rivers. Snails are omnivorous, mainly eating tender stems and leaves of aquatic plants, bacteria and organic debris, and they like to move at night and eat. The snail begins to move and eat at the water temperature of 15℃, and the optimum temperature for growth is 20-27℃. When the temperature is above 30℃, the snail will shrink its body into the snail shell to stop eating, gather in the shade or dive into the soil to escape the heat. When the water temperature exceeds 40 degrees Celsius, the snail will die; when the water temperature is lower than 8 degrees Celsius, the snail will dive into the mud hole to hibernate; when the water temperature rises to about 15 degrees Celsius in the spring of next year, the snail will re-enter the hole and eat. 2. Reproductive habits The way to distinguish the females from males of snails is mainly based on the shape of their right antenna. The right antenna of the male snail bends inward to the right (the bent part is the male genitalia). In addition, the female snail is large and round, while the male snail is small and long. Oncomelania hupensis is an oviparous animal, and its reproductive mode is unique. The embryonic development and larval development of Oncomelania hupensis are completed in the mother. It takes about one year for a fertilized egg to produce a baby snail. Oncomelania hupensis lays eggs in batches and begins to breed from March to April every year. At the same time, the female and male parents mate and fertilize, and at the same time, the young snails to be produced in the next year are bred in the mother. A female snail produces about 100- 150 young snails throughout the year. 3. Generally, the stocking of seed snails can be started in late March. Before the snail is released/0/0 day, the whole pond is sprayed with quicklime at a dosage of 50 kg-/0/00 kg per mu to remove wild fish, shrimp and other miscellaneous snails. After 3-4 days, the organic fertilizer and breeding bait organisms are piled up in the water body for the snail to eat. Snails can be purchased from the market or collected by themselves. Seed snails 100- 120 per square meter, and 4 summer bighead carp can also be raised in the pond. Before releasing the seed snails, apply a proper amount of manure in the pond to cultivate bait organisms. The stocking of seed snails is best completed in the early stage of snail breeding. The fresh snails with light brown color, thin and complete shell and dull dome should be selected as the seed snails. The cultured snails can be stocked separately, or some silver carp and bighead carp species can be interplanted or mixed culture of snails and loaches can be adopted. 4. The cultured water snail has strong adaptability and few diseases. As long as it avoids a large number of pesticides and fertilizers, many flat rivers, streams, pits, rice fields, ponds and other ordinary water bodies in rural areas can be stocked. If a special pond is excavated for feeding, choose a place with convenient water source and humus soil to build a pond (if the soil is not suitable, it is best to apply mixed compost to improve it first). Keep the sediment thickness10cm-15cm, and the area is not limited. If it is an open water body, a small amount of red duckweed and water lily can be cultivated on the water surface, some long vines, melons and vegetables can be planted around the pond for shade, and bamboo tails, branches or stones, grass and so on can be arranged in the water for snail to live in seclusion. 5. Water quality adjustment The quality of water in the aquaculture pond is one of the keys to the success or failure of aquaculture of snails. First of all, we must ensure that the water quality is excellent. Any water containing a lot of iron and sulfur must not be used. Because of the water with too high iron content, the mortality rate after stocking seedlings is very high, and the surviving snail shells are also attached with red rust, and even the snail meat is reddish brown. The water quality of sulfur is the same as that of snails, which have a sulfur smell and are inedible. The natural water body in slightly turbid rivers or ponds is the best for aquaculture. It should not be too clear and transparent, and the water body should contain rich natural bait and sufficient oxygen. Because the snail is very sensitive to dissolved oxygen in water, when the dissolved oxygen is 3.5 mg/L, it will not eat much, and when it drops to 1.5 mg/L, it will die. Therefore, the aquaculture water must be fresh, and it is ideal to use semi-running water for aquaculture. New water should be injected into the snail pond frequently to adjust the water quality, especially in the breeding season, and it is best to keep the water flowing. In high temperature season, it is better to adopt running water culture. In spring and autumn, it is better to cultivate with micro-flow water. The water depth of the snail pool should be kept about 30 cm. 6. Feeding management grows fastest in the first three to four months, then gradually slows down and stops growing after two years. Therefore, it is necessary to seize the opportunity and fully feed the snail during the artificial breeding period to make it grow in a short time, so that the snail meat is large, soft and delicious, which is beyond the reach of natural people and the yield is high. The extensive cultivation method in natural waters can meet the growth needs of snails only by maintaining the water fertility and applying an appropriate amount of organic fertilizers such as manure, chicken manure, cow manure, pig manure or straw at regular intervals. After the snails are released, the leftovers such as vegetable leaves, rice bran, bean cakes, vegetable cakes and animal offal are fed. After the cakes are soaked and softened, they are fed, and other feeds are chopped and mixed evenly. The feeding amount is generally calculated as 1%-3% of the total weight of the river snail, and the feeding amount is adjusted according to the growth and feeding situation of the river snail. Feeding does not need to be located, and more feeding points should be set up. Feeding is not required when the water temperature is lower than 15 degrees Celsius or higher than 30 degrees Celsius. The snail does not require much nutrition, so simply using rice bran, wheat bran and soybean powder in the proportion of 60%, 25% and 15% can make the snail's first-class feed. According to the feeding situation and climate situation of the snail, the snail has a strong appetite at a suitable temperature (that is, 20-28 degrees Celsius), and can be fed once every two days, and the feeding amount is 2%-3% of the body weight each time. When the water temperature is 15-20℃ and 28-30℃, feed it twice a week, and feed it to 1% each time. When the temperature is lower than 15 degrees Celsius or higher than 30 degrees Celsius, less or no investment is made. In the natural state, the snail can grow to 6-8 grams in that year, while the individual weight of artificial culture can reach 12- 15 grams. 7, daily management is strictly prohibited to flow into the water polluted by pesticides and fertilizers; Prevent ducks, snakes, rats, birds and other enemies from invading; Remove weeds and grass roots in water in time. Usually take the form of micro-running water to keep the water level at about 30 cm. In high temperature season, the water flow should be increased to control the water temperature rise and ensure the sufficient dissolved oxygen in the water. In cold weather, the snail enters the soil to hibernate. At this time, change the water 1-2 times a week, and sprinkle some chopped straw on the water body to facilitate the snail to overwinter. Overwintering management When the water temperature drops to 8-9 degrees Celsius, snails begin to hibernate. Hibernating snails use shell-top clay, leaving only a circular hole on the soil surface, and bubbles appear from time to time. The snail does not eat during the wintering period, but the water depth of the culture pond still needs to be kept10-15cm. Generally, water should be changed 1 time every 3-4 days to maintain proper oxygen content. 8, breeding precautions After a year of careful breeding, the young snails released can reach 10-20 grams, and the young snails hatched in that year can also reach more than 5 grams. When harvesting snails, the method of catching large snails and leaving small ones on the market in batches should be adopted, and adult snails should be selectively ingested, young snails should be kept and some female snails should be kept, so that natural replanting can be achieved, and seedlings need not be put in later. According to their living habits, in the hot season of summer and autumn, they choose to pick up bamboo branches and grass stalks that rotate on the shore or in the water body in the morning and at night; In winter and spring, choose sunny noon to pick it up. In addition, the snail can also be harvested by touching and catching in the lower pool or picking up in the drainage dry pool.