Shrimp stocking quantity
The stocking density of the temporary desalination pond is 1000~ 1500 fish /m3 when the specification of shrimp seedlings leaving the pond is 0.8~ 1.2 cm.
After the shrimps are temporarily cultured in the temporary culture pond 10~ 15d, the size reaches 2~3 cm, and the stocking amount in Datang is generally 60 ~ 70,000 per mu.
fodder
After the shrimps enter the pond, feed them with egg yolk and fish paste in time, and serve them with No.0 opening material.
The daily feeding amount is 0.5 g/ 10,000 dry materials, and it is fed in three times.
Water level regulation and management
After the seedlings are released, fresh water is added from the big pond to the desalination pond for 3~5 cm every day, and the salinity gradually decreases.
After 10~ 15d desalination culture, the water level in the pond is 70~80 cm, and the average size of shrimp fry is 2~3 cm, which can adapt to the fresh water environment of Datang, so it can be recovered, and the shrimp fry can swim into the pond for adult shrimp culture.
1. Pond conditions
Sufficient water, good water quality, convenient water injection and drainage, sandy loam or sandy soil is suitable as the bottom material; S=0.4~0.8 hm2, east-west, length-width ratio of 3∶ 1~ 1.5, slope ratio of1:2.0 ~ 2.2, water storage depth of 1.8~2.0 m, and filters and escape prevention facilities are installed.
Preparation before stocking
Clean the whole swimming pool.
The shrimp pond was exposed for more than 30 d; Eradicate the weeds in the field and remove the dirt in the shrimp pond.
Before sowing 15~20 d, inject water 15~20 cm, disinfect and fertilize water.