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1, site selection

Select ventilation to the sun, quiet environment, close to the water supply, good water quality, adequate feed sources, transportation and power supply is convenient.

2, pond conditions and construction requirements

The pond should be rectangular, the area is not limited to facilitate the management can be, generally flat bottom, the bottom of the sandy or hard soil bottom is good, there can not be too much silt, it is best to have slopes, to provide a combination of shallow and deep for the production of crayfish, water depth of the water environment, the shrimp ponds should be installed aerator or to maintain a micro-flow of water in order to increase the oxygen melt, if it is a shrimp pond transformation If the shrimp pond is modified, it is necessary to use the dry pond fishing season to remove excessive silt. Before stocking, dry pond exposure to 15 days, to achieve small cracks in the bottom of the pond is appropriate, conducive to the growth of crayfish habitat. If it is a newly dug pond, it does not need to be exposed to the sun. In the pond can be surrounded by asbestos tiles, plastic film and so on around a circle to the horizontal plane as a boundary downward buried about 30 centimeters, in order to prevent crayfish holes to escape.

3, clean and disinfected

Shrimp fry stocked 15 days before the pond must be cleaned and disinfected, generally we use quicklime dissolved in the whole pond sprinkled, so that there is a precipitation of pollutants, purify the water, improve the role of crayfish environment, in addition to the complete removal of the pond of the hostile, the conditions of sunshine for a few days.

4, cultivate fertilizer

After disinfection of the pond, the first in the waters into the right amount of organic matter, 150 kg per acre to 250 kg of organic matter, the purpose of the plankton as lobster bait, but these are not the crayfish food, the transparency of the pond water to reach 30 to 35 centimeters to lime green is appropriate, after 5 days of the pool of plankton generation, when the juvenile shrimp can be placed.

Living temperature range of O a 36 ℃. There is information that... In the Yangtze River Basin, the winter night will be placed outdoors with water. Frozen can still survive. But its optimal growth temperature range of 18-32 ℃. When the temperature is lower than 15 ℃ or higher than 32 ℃ when the growth rate decreased. Adult shrimp high temperature tolerance for spell ℃, when the temperature is higher than 32 ℃ and 15 ℃ low temperature, in the Pearl River Basin, the Yangtze River Basin and the Huaihe River Basin can grow and natural overwintering. Fertilized egg incubation and larval development water temperature at 24 a 28 ℃ is good.

Organic matter green manure 400 to 450 kg/mu or organic fertilizer 200 to 250 kg/mu; fertilizer should be inorganic fertilizer and micro-ecological preparations during the breeding period;

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