Experience of raising field snails in cement ponds and soil ponds

With the continuous development of aquaculture, snail culture is also a good project. With the continuous improvement of people's living standards, people pay more and more attention to food, so the market demand for snails has been on the rise in recent years.

Experience of raising field snails in cement ponds and soil ponds

The cement ponds and soil ponds of field snails are built in places where drainage is convenient and there is no waste water pollution. The pool is 1.5 meters wide, 35 meters deep and 40 centimeters deep, with unlimited length. The edge of the pool is built with a dike ridge about 20 cm above the water surface, an inlet and outlet is opened at the opposite corner of the pool, and an escape net is set up. The bottom of the pool is covered with silt of a certain thickness. The pond surface can raise algae, water lotus, duckweed, diamond white and other aquatic plants for snail consumption, shade and summer shelter and habitat. Some peanuts are planted around the pool for field snail habitat and shade. Before raising snails, cement ponds and soil ponds should apply base fertilizer to cultivate natural bait. 75% of chicken manure and 25% of chopped rice straw should be used as base fertilizer, and 530 grams per square meter should be applied. When the water quality becomes fat after 7 days, the parent snail can be put in. The newly built cement pool will be sprinkled with white vinegar 0.5 per square meter and 0.75 kg. After cleaning, inject 30m water to a depth of 40cm.

Construction of field snail culture pond

1. Selected sites for breeding: snails have strong adaptability and few diseases. As long as a large number of pesticides and chemical fertilizers are avoided, many flat canals, beaches, pits, paddy fields, ponds and other ordinary water bodies in rural areas can be stocked.

2. Pond construction: snail culture ponds are generally 1.5 meters wide, 10-15 meters long and 30-50 cm deep. 20 cm high embankments are built between the two ponds for walking, and the bottom of the pond is covered with 10 cm thick mud. Aquatic plants such as Zizania caduciflora, asparagus, water lotus, duckweed and other aquatic plants can be sparsely planted in the pond to provide sunshade, climbing habitat and bait, so as to improve the utilization rate of snail ponds. A 60-80 cm high fence or mesh fence is built around the snail pool.

3, pond disinfection: in snail culture, it is forbidden to use pentachlorophenol sodium to clear ponds, generally using quicklime or bleaching powder to clear ponds for disinfection, but quicklime is the best, the dosage is water (water depth 30-50 cm) 100-150 kg / mu, anhydrous 50-75 kg / mu, quicklime clear ponds have the advantages of increasing PH value, increasing calcium content, regulating water quality, sterilization and so on.

The culture method of field snail

1, snail selection: field snail is mostly natural reproduction, artificial culture can be picked from paddy fields, Zizania caduciflora, muddy water ditches, or go to the market to buy, and then choose fresh snails with light brown color, thin shell and obtuse body tail as species of snails. Generally, field snails weighing 15-25 grams can reach sexual maturity, and can reproduce above 15 ℃. Female snails are large and round, while males are small and sharp.

2. Stocking time: snail species can be released not only at one time, but also in batches for many times, but to improve the survival rate, it is generally necessary to avoid the time of high temperature and heat. Of course, stocking at the end of the first year is beneficial to shorten the breeding time and increase the per unit yield of the same year.

3. Stocking method: if you put 11 species snails per square meter in the natural area, you can put 11 species snails per square meter (3 males and 8 females). If you dig a pond alone, you can put 100-500 snails per square meter, and the water depth is 0.8-1 meters. The bottom of the pond retains a layer of silt of more than 10 cm, which is convenient for snails to crawl, feed, perch, etc., and can reproduce naturally when stocking female and male snails together.

4. collocation culture: in order to regulate the water quality by raising 20-50 grams of silver carp and 5-10 bighead carps with 20-50 grams per mu, snail ponds are not suitable for raising carnivorous or carnivorous fish such as green carp, common carp, crucian carp and yellow carp.

Culture and management of field snail

1. Feeding: field snails are omnivorous, and rice bran, vegetable shavings, melon leaves, animal carcasses and commercial feed can be fed. Generally, aquatic plants, soil humus, vegetable melon peel and other staple food, fertile paddy fields, fish and snail mixed culture or water surface breeding red duckweed, green duckweed, water hyacinth and other depressions, can be less or no feed.

2, water quality regulation: first, the snail pond should often inject new water to regulate the water quality, especially in the breeding season, it is best to keep the pond water flowing, especially in the high temperature season, the effect of running water culture is better, and micro-running water culture is better in the spring and autumn seasons. the depth of snail pond water should be kept at about 30 cm. The second is to adjust the acidity and alkalinity of water. When the pH value of pond water is on the low side, 0.15-0.18kg quicklime is applied per square meter and sprinkled every 10-15 days, so that the pH value of pool water is kept at 7-8.

3. Disease prevention and control: there are few snail diseases, and the key point is to manage water and prevent ducks, cats, snakes, rats and birds from entering the pond to prey on snails, and to prevent snails from escaping. Shallow water, micro-running water culture, pool water depth of 25-30 cm is appropriate, in the breeding season and high temperature season to keep the pool water flow.

4. Overwintering management: when the water temperature drops to 8-9 ℃, the field snail begins to hibernate, while hibernating, the field snail drills the soil with the top of the shell, leaving only a round hole in the soil surface, and bubbles emerge from time to time to breathe. Field snails do not eat during the overwintering period, but the culture pond still needs to maintain a water depth of 10-15 cm, generally exchanging water every 3-4 days, in order to maintain appropriate oxygen content.

5. Timely fishing: to selectively catch snails and keep more female snails, they can be harvested in batches. The water temperature is higher in midsummer and early autumn, and field snails often hide in the soil and grass at noon. They must be picked in the morning and evening, and can also be picked by drainage. For every 100 female snails, the annual output can reach 100 kg.

6. Packing and transportation: the transportation of field snails is very simple, which can be packed in ordinary bamboo baskets and wooden buckets, or packed in woven bags. During transportation, as long as the snails are kept moist to prevent exposure to the sun.

Although there are many people who breed field snails now, perhaps many people do not know the techniques and skills of farming field snails. In the process of farming, only by mastering certain techniques and skills can we take fewer detours and maximize profits.

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