Construction of crayfish culture base

Crayfish is a kind of freshwater economic shrimp, which is widely welcomed by people because of its delicious meat, and forms an absolute competitive advantage in the local ecological environment because of its omnivorous, fast growth and strong adaptability. Today, the editor of Guizhou Agricultural Network will introduce the construction method of crayfish breeding base for you.

Base selection

Choose places with sunny ventilation, quiet environment, adequate water sources, no pollution, rich sources of bait, lush vegetation, sufficient dissolved oxygen, convenient drainage and irrigation, convenient transportation and power supply. Water source selection: water from rivers, lakes, reservoirs and ponds can be used as water sources, and well water and spring water can also be used. the PH value of water is 6 Mel 8.

Base environment

Shrimp pond area can be large or small, the best east-west direction, toward the sun, the pond is slightly sloping around, the bottom is flat, slightly inclined to the side of the outlet, easy to drain the pool water. All around the pond must be soil slope protection, mainly lobster hole habitat, let it safely through the winter, the pool ridge above the water surface 40-50cm, the pool ridge width to reach 100cm, mainly to prevent lobster hole filtration, if the pool water area exceeds 3 mu, you can build another two ridges in the pond, field, well, cross-shaped uniform distribution, mainly let the lobster hole habitat, spawning and reproduction.

Base disinfection

The commonly used methods are as follows.

1. Quicklime: only 5-10cm stagnant water is left in the pool water, and quicklime is broken and sprinkled evenly into the pool water to dissolve. The dosage of quicklime is generally 20 Mu and 40 jin per mu. On the second day of using quicklime, stir the bottom of the pool with iron rake to fully mix the lime slurry and silt.

2. Bleach: drain the pond water, 0.5 ml / mu of bleach with an effective rate of more than 30% per mu, and 1.5 ml / mu of bleach with a water depth of more than 30% / mu in undrained ponds. When in use, put the bleach into a wooden basin or iron bucket, add water to dilute and sprinkle it into the pond. Do not release the disinfected water, stay in the pool, start to enter the water the next day, and reach the required level of feeding. Note: the calcium content of quicklime is more than 50% (theoretical value: 71.4%). The lobster will molt in the process of growth and must take in enough calcium.

Base fattening

After reaching the water level required for feeding, organic manure is applied, such as: (fermented pig, cow manure and other animal manure) 150kg / mu, so that the water depth is 80cm-120cm. After three days, if the pond water is not fermented, a small amount of fermented agricultural machinery fertilizer water can be sprinkled many times, so that the pond water can be gradually transformed into appropriate fertility, so that the water transparency 25-35cm, it is appropriate to green, the pond gradually has plankton to form. After five days of disinfection, you can put in the growing shrimp.

Base escape prevention

Lobsters like nocturnal activities, crawl along the ground, the escape prevention method is: in the periphery of the pool ridge with asbestos tiles, silk cloth, plastic film or steel gauze net, with wooden piles as a support, build a high 50cm anti-escape wall, the bottom buried in the soil about 30cm seal, to ensure that no lobster can escape.

Special hint

Aquatic plants (all kinds of aquatic plants) can be properly cultivated in the pool. Aquatic plants are auxiliaries and natural bait for shrimp to survive. They can also localize the pond water and absorb lobster feces to regulate water quality and fatness. The growth area of aquatic plants should be controlled within 1/4 and grow separately. Before entering the pond, aquatic plants should be soaked in 100kg of water-soluble lime for 10 minutes to kill harmful substances and pathogens in aquatic plants. At the same time, aids and concealment can be arranged at the bottom of the pool for lobster habitat. Breeding shrimp can be released when the water temperature is more than 10 ℃. Choose sunny morning or evening to release, and avoid excessive temperature difference in pond water when releasing seedlings.