Six key steps of cultivating River Shrimp

First, pond conditions and cleaning. It is appropriate to choose freshwater ponds or shrimp ponds with an area of 3 mu and a water depth of 1.5 to 2.5 meters, with sufficient fresh water sources, no pollution and sandy bottom.

Second, fertilize and cultivate bait. One week before stocking, the shrimp seedlings were filtered with 60-80 mesh sieve, 30 cm of water, and 50 kg of base fertilizer (fermented animal manure) or 5 kg of urea per mu to cultivate the basic bait.

Third, shrimp fry are released. In general, shrimp fry can be released when the water temperature is stable at 18-20 ℃ in late May. Shrimp seedlings need to be desalinated for more than a week, with a specific gravity of less than 1.003 before they can be released. Generally, 30,000 shrimp seedlings of 0.7-1.0 cm per mu are stored, and the seedlings below 0.7 cm need to be temporarily reared. A total of 80,150 silver carp species of 10 cm and 20 cm can be mixed in shrimp ponds. Fourth, bait feeding. There is no need to feed the shrimp seedlings in the pond for one month, but mainly depends on the plankton in the pond. One month later, the compound feed was fed, supplemented by fresh fish, shellfish, etc., and the feeding rate was generally 3% or 5% of the shrimp body weight. The amount of bait can be increased appropriately from July to September, according to the principle that there is no residual bait, the number of bait is 2 to 3 times a day, the amount of bait in the daytime accounts for 3%, and the amount of bait in the evening is 3%. Fifth, divert water to prevent diseases. After 10 days of stocking, the shrimp fry began to add water gradually, adding 10-15 cm of water per week. Change water 20,30cm every 2-3 days in high temperature season. Every half month or so, the whole pool is sprinkled with 5 kilograms of quicklime to improve the water quality and bottom quality, as well as sterilization to promote shelling and growth. At the same time, 1 ‰ ~ 3 ‰ garlic bait should be mixed for 3 days at 15 ~ 20 days. Sixth, to collect and arrest. General breeding 80 million 100 days, shrimp body length up to 7 million 10 centimeters can be caught and sold according to the market situation. Can be caught by net or water collection, 36 hours away from the water dry transportation, the survival rate can reach 90%.