This polyculture of crabs and squid uses the space of water to form a compound ecological system where fishes and crabs coexist and become mutually beneficial. This reduces the incidence rate, greatly improves the market quality of commercial crabs, and increases the breeding income. The following technical points are summarized as follows:

Pond clearing

After the pond has been exposed to sunlight, 80 kg of clear lime in the clear pond is used per acre to kill the enemy’s harmful organisms and pathogens. The crabs are put into 0.5 m deep water for a period of 7 days before stocking, and 60 kg of chicken droppings per acre are used to cultivate planktonic food. The water color is yellow-green, the transparency is 30 cm deep, and some plants are planted for the crabs to inhabit.

Seed stocking

In the middle of May, 1,000 crabs were released per acre, and the specifications were 160 to 200 per kilogram. The crabs required a healthy body, complete limbs, no parasites, and no disease.

Eel carp seedlings in late June, per acre to put down 30 fish carp seedlings, specifications for the body length of 2.5 to 3 cm, requirements of tilapia seedlings specifications and tidy, quick action, normal color, no parasites and other diseases.

Note that the carp is more ferocious, fish, crab polyculture should pay attention to control the timing of the seedlings, and other crabs grow to the specifications of 60 to 80 per kilogram, in order to put the carp seedlings in the pond, in order to avoid dunking crab was injured . At the same time, large-sized crabs should be placed as far as possible.

Feed feeding

The crabs are fed with the principle of “mixing meat and vegetarian dishes, and combining green tea with fine vegetables”. The carp seedlings are fed in the pond and feed on the crabs with animal baits as the main ingredient. As soon as possible, the crabs will grow to 60-80 kg per kilogram. In the whole breeding process, the total ratio of crabs with feeds accounts for about 30% of the fed amount. According to the growth of crabs, feeding and weather, etc., the amount of feeding should be controlled. Routines are added to the diet to prevent the occurrence of clam shell disease. The squid is fed with full-price fish pellets and adheres to the principle of "four determinants."

Water quality regulation

The crabs enjoy a refreshing water quality environment. The transparency is controlled at a depth of 35 centimeters. During the high temperature season, add 10 centimeters of water every day until the highest water level, and use the EM biological preparation Quanchiposa 1 or 2 times to improve the water environment.

Disease prevention and treatment

Sprinkle lime and calcium dihydrogen phosphate in an appropriate amount every month to improve water quality, and use 10 kg per mu. Carp is a carnivorous fish, fish, crab polyculture can eat the extra small trash fish, so that the water quality to keep cool, greatly reducing the incidence of disease.

Patrol management

Observe the color, escape, feeding, shell, and disease conditions daily so that countermeasures can be taken at any time.

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