What preparations should be made before stocking crab seedlings?

The preparation before stocking crab seedlings directly affects the inclusion rate and metamorphosis rate of crab seedlings after

What preparations should be made before stocking crab seedlings?

The preparation before stocking crab seedlings directly affects the inclusion rate and metamorphosis rate of crab seedlings after entering the pool.

(1) pond cleaning The pond should be cleaned in winter as far as possible, and the cleaned pond should be allowed to dry and freeze.

(2) Before disinfection, an escape-proof wall should be built in the escape-proof culture pond to prevent enemy creatures from entering after disinfection.

(3) Before disinfection and seedling release, clean the pond with drugs to kill pests and pathogens in the pond.

(4) 20 days before crab seedlings enter the pond, aquatic plants such as aquatic plants and water peanuts should be planted at the bottom of the pond.

(5) 7- 10 days before fertilization, inject 30-40cm water into the pond? Fertilize and cultivate natural bait.

(6) Before stocking, the stocking amount of each pond should be determined, and each pond should be stocked at one time. If it is not stocked at the same time, the specifications of young crabs in the early and late stages will be too different, resulting in the phenomenon of cannibalism.