Prepare and close ponds before stocking for good access and drainage facilities. Surrounded by ponds, nets and nets should be used to enclose walls that are 50 cm high. Set up shrimp habitats in aquaculture waters, such as installing rubble, bricks, stones, mesh, old tires, grass cages, etc., as shrimp nests for shrimp habitat and hostile defense. Water plants such as water hyacinths, water peanuts, water lettuces, and white peony plants are planted around the pool, and their coverage is generally 1/3 of the surface of the pond, so as to facilitate lobster shade and breeding lobster-eating plankton. General new lobster pond can be used lime water with water clear pond, with 100 kg per acre, if the use of old ponds or lakes to raise lobster, to dredging, trimming, exposure, before stocking shrimp 10 days to 15 days, with lime per acre 50 Kilogram dry pool disinfection. At the same time, it completely eliminates predatory wild predators such as cockroaches, clams, blackfish, and snakes and rats in ponds. 10 to 15 days before the stocking of the shrimp, generally, 100 kg to 200 kg of manure is adequately decomposed by applying pig manure to the water surface of the mussels, and plankton is cultivated and an appropriate amount of organic crumb is provided for the shrimp feed. Water barriers (preferably 60 mesh to 80 mesh) should be installed before the pond is flooded to prevent entry of water into the water. The depth of the pool water is kept between 50 cm and 80 cm, and the transparency is between 30 cm and 40 cm. Shrimp stocking stocking shrimp stocking should be carried out in the morning and evening of sunny days, stocking 2 to 6 cm of juvenile shrimp from 6000 to 8,000 tails per mu, or from 4000 to 6000 tails of 3 to 5 cm long juveniles. The specifications for shrimps stocked in the same pond need to be neat and consistent. At the same time, about 50 grams of flowers can be stocked in pond water, 300 to 400 white storks, and 200 squids. After three days of putting the seedlings carefully, they were minced small fish and minced meat. Three days later, they were fed with small fish, minced meat or compound feed until the shrimp seedlings grew to 6 cm to 7 cm. All can be fed crushed snails, coriander and appropriate amount of plant feed (such as wheat, bran, corn, cake, etc.) or compound feed. The amount of daily feeding is based on feeding, eating, and leaving no residual baits. Generally, medium and small lobsters are bred at 15% to 20% of body weight, and adult shrimp are fed at 5% to 10% of body weight, depending on the weight. The food condition of the shrimp is adjusted. Feed twice a day, once in the morning and evening, and feed at 70%-80% of the daily feed at night. The feed should be distributed around the pond and properly dispersed. The lobster should be properly distributed in order to facilitate its use. Feeding. Water Management The lobster grows fast, has a strong metabolism, and consumes a large amount of oxygen. Therefore, the water quality of the shrimp pond should be kept fresh. Add 15 cm to 20 cm deep water each week to ensure that the water is fresh, clean, and has enough dissolved oxygen to control the transparency of the pool water. Above 35 cm deep, when the weather is overheating, it is necessary to properly deepen the pool water to stabilize the pool water temperature. Waterproofing is subject to industrial pollution, pesticide pollution and chemical pollution. When oxygen is low in water, when the water quality is aging, or when the water quality is ageing or in thundery weather like thunderstorms or even cloudy days, the feeding amount should be reduced or the feeding should be stopped. Observe the observations. If the lobster is found to be unresponsive, swim to shore. When the floating head climbs to the shore, it shows that the lack of oxygen is serious. It is necessary to add water in time or increase the oxygen in the aerator. Day-to-day management should be based on diligent inspections, diligent patrol ponds, attention to lobster feeding, activities, growth, and clam shells in order to take necessary technical measures in a timely manner. Remove moss in the pool in time; always check the inlet and outlet filters to prevent worms or wild fish and other harmful organisms from entering due to broken filters. Always pay attention to whether there are predator organisms in the pool, such as water mice, water snakes, water birds, frogs and fish, etc. If any, remove them in time. Prevention of Diseases Disposal of surface disinfection before disinfecting the shrimp seedlings to prevent the pathogens from being carried into the pool, regular disinfection of shrimp ponds with quicklime, frequent refilling of fresh water to keep the pool water clean and hygienic, and the addition of multivitamins to shrimp feeds Shrimp immunity. Timely fishing is generally fed for about 2 months. When the lobster weighs more than 50 grams, it can be caught and listed. The lobsters are caught in cages, cages, fences and other methods to catch large and small animals. Polyols are a group of alcohols that contain two or more hydroxyl groups in their molecules. The general formula is CnH2n+2-x(OH)x(x≥2). Polyols are generally soluble in water. Most polyols are viscous liquids or crystalline solids with high boiling points, strong solubility in polar substances, low toxicity and volatility. 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