Cultivation technology Base tail shrimp Base tail shrimp is famous for its thin shell, fat body, tender meat and delicious taste. The freshwater pond culture technology of shrimp is introduced as follows: Pond selection: The pond area is preferably 0.13 hectares to 0.2 hectares and the depth is 1.5 meters to 2 meters. The bottom of the pool is flat, and about 10 centimeters of mud near the bottom is retained. A ring ditch is excavated around it, 4 meters wide and 0.5 meters deep. The pond has sufficient water source, fresh water quality and no pollution, and has an independent inlet and drainage system. Before shrimp seedlings are stocked, the pond must be cleaned and disinfected to remove wild fish and other harmful organisms to the shrimp. About 20 days before stocking, use 100 to 150 kilograms of quicklime per mu of water surface to slurry and then spray and disinfect the entire pond; 7 days before stocking, put 150 kilograms of decomposed and fermented organic fertilizer (mainly livestock and poultry manure) per mu of water surface. , then inject water to a depth of 50 cm. When filling water, the water filling port is filtered with a 40-mesh screen to prevent harmful organisms of shrimp from entering the shrimp pond. After about 7 days, a large number of copepods, rotifers and other zooplankton appear in the pond. At this time, shrimp seedlings enter the pond. The best time. Shrimp seedlings are stocked. Since shrimps originally lived in seawater, their artificial seedlings must also be raised in a high-salinity environment (generally, the relative density of seawater when the seedlings emerge is 1.02). Shrimp seedlings must be desalinated and cultured before being transplanted into fresh water. Only desalinated shrimp seedlings can be stocked. One day before stocking, test the water with green shrimp seedlings with a body length of 2 cm to 3 cm for 5 hours to 6 hours, and then stock the base tail shrimp, stocking 80,000 to 100,000 shrimp per acre of water surface; if after intermediate intensive cultivation, , with a size of 1 cm to 1.5 cm, and 50,000 to 60,000 animals per acre of water surface. The specific stocking density should be determined according to the conditions and technical status of the pond. The stocked shrimp larvae need to have smooth and crystal clear shells, uniform size, strong physique, and strong jumping ability. Feeding management: 1. Feeding management: In the early stage of breeding (shrimp larvae are 3 cm long), that is, the first month after the larvae enter the pond, they mainly rely on plankton in the pond as feed or supplemented with a small amount of fine particle feed. One month after the shrimp seedlings enter the pond, they are fed artificial compound feed (mainly Macrobrachium feed). The daily feeding amount is 4 to 6 times the shrimp body weight. During the peak growing season, some crushed snails, clams, small miscellaneous fish, etc. may be added where conditions permit. The amount of feeding should be flexibly controlled and adjusted in time according to the season, water temperature, climate and water quality. For example, when the water temperature is between 25°C and 30°C, the shrimp feed vigorously. You should seize the opportunity to feed more feed, and add 0.3-0.5 multivitamins and bone meal and other additives to the feed to ensure the nutrition of the shrimp growth. need. Feeding during the day accounts for 1/3 of the daily feeding amount, and in the evening accounts for 2/3. Feeding can be increased once in the middle of the night during the peak growing season. New prawns 2. Water quality management: When the shrimp seedlings enter the pond, the water depth is controlled at 60 cm and maintained for about 10 days. From now on, add water once or twice every 7 days, with a depth of 10cm to 20cm each time, and the deepest water is maintained at 1.5m to 1.6m. When the pool is full, drain the bottom water regularly. It is best to release water in the morning on a sunny day. Release 50 cm to 60 cm of bottom water to let the sun shine on the water body as much as possible, making the entire water body an oxygen-rich zone to accelerate the molting of shrimp and facilitate growth. Pay attention to fertilization water quality and mechanical oxygenation. Fertilization should be controlled according to the water quality and fatness. The water color should be controlled to be yellow-green or brown, and the transparency should be controlled at 30 cm to 35 cm. New Penaeus prawns have higher requirements for shrimp pond substrate than other shrimp species. Therefore, it is very important to improve the shrimp pond substrate. Spreading quicklime from time to time has a certain effect on improving the water quality and substrate of shrimp ponds. The dosage is 10 kg to 15 kg per mu of water surface. Harvest fishing: The harvesting time of base tail shrimp mainly depends on the growth status of adult shrimp and market requirements. Generally, it takes 80 to 100 days to breed in freshwater ponds to reach commercial specifications of 7 cm to 10 cm in length. Rotary fishing can also be carried out, and there are three methods of collecting: ground cages, dragnets and water collection in dry ponds.