Culture methods of prawns in Ji Wai

The size of the breeding site is 2-5 mu, and the water depth is between 1-2 meters. Clean and disinfect the farm thoroughly. Fertilize and bait about one week before putting seedlings. The seedlings should be released in late May, and desalination and dechlorination should be carried out one week before the seedlings are released. Do a good job in daily management, mainly water quality, bait, disease prevention and control management.

1. Site selection

The breeding site is similar to that of other fish and shrimp. Rural ponds can be built or used by themselves. The size is 2-5 mu, the water depth is best between 1-2 meters, and the pond should have some slope and be slightly inclined, which is conducive to drainage. The water quality of the culture pond must be high. Compared with other fish and shrimp, the base shrimp has higher requirements for water quality and is more sensitive to water pollution. Clear water quality is the key point to ensure its molting and growth.

2. Cleaning and fertilizing

After preparing the breeding site, it should be thoroughly cleaned and disinfected. After emptying the pond water, it can be exposed to the sun for 2-3 days before entering the water. Those ponds with more silt need to be exposed to the sun for about one month. After entering the water, they should be strictly disinfected. They can be disinfected with common quicklime or bleaching powder. Base shrimp feed on plankton, so about a week before seedling release, fertilizer culture bait, shrimp culture pond in the basic biological bait, fertilizer mainly organic fertilizer and inorganic fertilizer.

3, seedling

Base shrimp suitable for growth in 18-30 degrees of water temperature, so generally put seedlings in late May, when the temperature is more stable, suitable for seedlings. In order to ensure the survival rate of shrimp seedlings, it is necessary to dilute and dechlorinate them one week before they are released, and put them in water with a salt content of 1.003 for a week before they can be moved into the culture pond. Desalination must be carried out step by step. It must not be done on impulse, but at the same time with fertilization and bait cultivation.

4. Breeding management

When shrimp seedlings enter the pond, it is the daily management, mainly water quality, feeding, disease prevention and control management. Water quality management is extremely important, and then shrimp stocking for about 10 days, to gradually add water, and sprinkle with quicklime or bleaching powder, improve water quality, disinfection and sterilization. When the water temperature reaches 24-30 degrees, the food intake of the shrimp will increase greatly, and this is also the period of its rapid growth, so it is necessary to increase the feeding to ensure the food source; disease management is the main, and quicklime mold is regularly sprinkled at each time period, and calcium can be added to promote the growth of shelling.