The pond should have good water inlet and drainage facilities. Around the pond, an escape wall with a height of 50 cm should be surrounded by bamboo pieces and mesh.

Set up shrimp habitats in aquaculture waters, such as rubble, bricks, stones, nets, old tires, grass dragons, etc. as shrimp nests for shrimp to shelter and defend against enemies.

Aquatic plants such as water hyacinth, water peanut, water hyacinth and Zizania latifolia are planted around the pond, and their coverage is generally 1/3 of the surface of the pond, which is beneficial for lobster to shade and breed plankton that lobsters like to eat.

Generally, the newly-built lobster pond can be cleaned with quicklime water, with a dosage of 100 kg per mu. If lobsters are raised in old ponds or lakes, they should be dredged, trimmed and exposed to the sun, and disinfected in a dry pond with 50 kg of quicklime per mu10-0/5 days before shrimp seedlings are released. At the same time, the predatory wild enemies such as catfish, loach, snakehead, snake and rat in the pond are completely eliminated.

Before 10- 15 days, fully decomposed manure such as pig manure 100-200 kg is generally applied to each mu of water surface to cultivate plankton and provide appropriate amount of organic debris as shrimp feed.

Before the pond enters the water, a water screen should be installed, preferably 60-80 mesh, to prevent enemies from entering the water. The depth of the pool water is maintained at 50-80 cm, and the transparency is between 30-40 cm.

Second, release shrimp seedlings

It is advisable to raise 6,000-8,000 young shrimps with a length of 2 cm or 4,000-6,000 young shrimps with a length of 3-5 cm per mu in sunny morning and evening. The specifications of shrimps stocked in the same pond are neat and consistent. At the same time, about 50g of flowers, 300-400 silver carp and 200 bream can be stocked in the pond water.

Third, carefully feed

Within 3 days after the seedlings are released, minced fish and minced meat are put in, and after 3 days 1 month, small miscellaneous fish, minced meat or compound feed are put in. When the shrimp seedlings grow to 6-7 cm, all crushed snails, mussels and appropriate plant feeds such as wheat, bran, corn and cake or compound feed can be fed. The daily feeding amount shall be based on satiety, eating and leaving no residual bait. Generally, crayfish and crayfish are fed at 15%-20% of their body weight, and adult shrimps are fed at 5%- 10% of their body weight, which can be adjusted according to their eating conditions. Feed it twice a day, once in the morning and once in the evening, and the feeding amount in the evening accounts for 70%-80% of the daily feeding amount. The bait should be thrown around the pond and properly dispersed, and more lobsters should be thrown in places where they are concentrated to facilitate their feeding.

Fourth, water quality management

Lobster grows fast, its metabolism is vigorous, and its oxygen consumption is high. Therefore, the water quality in the shrimp pond should be kept fresh, and water should be added15-20cm deep every week to ensure that the water quality is fresh, clean and cool, and there is enough dissolved oxygen. The transparency of the pond water should be controlled above 35cm. When the weather is overheated, the pond water should be properly deepened to stabilize the water temperature. Strictly prevent water quality from industrial pollution, pesticide pollution and chemical pollution.

When the dissolved oxygen in the water is low, the water quality is aging, or in severe weather such as thunderstorms, sultry days and even cloudy days, the feeding amount should be reduced or stopped, and attention should be paid to observation. If the lobster is found to be slow to respond, it will swim to the shore and float its head and climb to the shore, indicating that the hypoxia is serious, and it is necessary to inject water or start an aerator to aerate in time.

V. Prevention of diseases

Ying Qin inspected and patrolled the pond frequently, paying attention to the lobster's foraging, activities, growth and molting, so as to take necessary technical measures in time. Remove the moss in the pool in time; Always check the filter screens at the inlet and outlet to prevent lobster from escaping or harmful organisms such as wild fish from entering due to damaged filter screens. Always pay attention to whether there are harmful organisms in the pool, such as water rats, water snakes, water birds, etc. If there are, they should be removed in time.

Disinfect the body surface of shrimp seedlings before they go down to the pond to prevent pathogens from being brought into the pond. Disinfect the shrimp pond with quicklime regularly, add fresh water frequently, keep the pond water clean and hygienic, and add various vitamins to the shrimp feed to enhance the immunity of shrimp.

Six, timely fishing

Generally, it is raised for about 2 months. When the lobster weighs more than 50 grams, it can be caught on the market. Lobsters are caught in shrimp cages, ground cages, purse seines, etc., and the big ones are caught and the small ones are kept.