How to raise prawns in Kei Wai? Master the culture technology of prawns based on science

Site: choose the place with sufficient water source, good water quality and convenient drainage and irrigation to build the pond, the water depth can be controlled at 1-2m, and the pond should be rectangular. Clear the pond and fertilize: disinfect the pond 15 days before seedling release, and apply appropriate amount of organic and inorganic fertilizer 7-10 days before seedling release. Environment: the best water temperature is about 18-25 ℃, and the range of salt tolerance is 0-34%. Seedling release: in late May. Management: increase the amount of bait during the rapid growth period to ensure that the bait is adequate.

Culture techniques of prawns in Kei Wai

1. Site selection

Select the place with sufficient water source, good water quality, no pollution and convenient drainage and irrigation to build the pond, the area is controlled at about 2-5 mu, the water depth is controlled at 1-2m, the pond had better be rectangular, the slope of the pond is controlled at 1:2-1V2.5, and the bottom is tilted slightly to facilitate drainage. Kei Wai prawns have higher requirements for water quality, and shrimp ponds should have independent inlet and drainage channels for drainage and irrigation to regulate water quality.

2. Clear the pond for fattening

15 days before seedling release, the pond was disinfected with a certain proportion of quicklime or bleach, and 7-10 days before seedling release, 50cm water was injected into the pond, and then appropriate amount of organic and inorganic fertilizer was sprinkled into the pond to cultivate sufficient biological bait for prawns.

3. Environmental requirements

The prawns have strong adaptability to the water temperature, and the best water temperature for culture is about 18-25 ℃; the range of salt tolerance is 0-34%; they belong to omnivorous animals, mainly feed on benthos, and also feed on bottom plankton and swimming organisms.

4. Release seedlings

The release of the seedlings is usually carried out in late May. Before releasing the seedlings, the shrimp seedlings are temporarily reared in water with a salt content of 1.003 for a week and then transferred into the culture pond.

5. Culture management

After putting the shrimp seedlings for about 10 days, gradually add water to the pond and sprinkle an appropriate amount of quicklime or bleach to improve the water quality, disinfect and sterilize. When the water temperature reaches 24-30 ℃, the food intake of Ji Wei shrimp will increase significantly, and this is also the period of their rapid growth, so it is necessary to increase the amount of feed to ensure that the food is sufficient. Regularly sprinkling limestone mold into the pond can not only prevent diseases, but also supplement calcium to help shrimp shell.

The efficacy of Kei Wai Shrimp

1. Enhance human immunity

Jiwei shrimp is rich in nutrition, which can enhance human immunity, tonify kidney and strengthen yang, resist drought and senility, and has a certain therapeutic effect on kidney deficiency and impotence, cold fear, body tiredness, waist and knee pain and so on.

2. Dredging breast milk

500g fresh shrimp meat is ground and taken with yellow rice wine three times a day for several days, which can promote lactation.

3. Relieve neurasthenia

The skin of Ji Wei shrimp has a sedative effect and has a certain therapeutic effect on neurasthenia, autonomic nerve dysfunction and other diseases.

4. Prevention of arteriosclerosis

The content of magnesium in prawns is rich, which plays an important role in regulating cardiac activity, which can protect the cardiovascular system, reduce the content of cholesterol in blood, prevent arteriosclerosis, dilate coronary artery and prevent hypertension and myocardial infarction.