1 pond clearing
After the pond is exposed to sunlight, every 1/15 hectares is disinfected with quick-lime 80kg clear ponds to kill predators and pathogens. The crabs are fed for about 7 days before stocking, and the influent water is about 0.5m. Each 1/15ha applies 60kg of chicken droppings to cultivate plankton. The bait makes the water yellowish green with a transparency of 30cm. And plant some grasses for the crabs to inhabit.
2 seed stocking
2.1 In mid-May, 1,000 sticks of crabs will be stocked on each 1/15 hectare and the specifications will be 160-200 sticks/kg. The crabs require strong physique, complete limbs, no parasites, and no disease.
2.2 In late June, 30 pieces of desalted carp seedlings will be placed on each 1/15 hectare, and the specifications are 2.5-3cm. They require that the carp seedlings have the same specifications, quick action, normal body color, and no parasite or other diseases.
2.3 Stocking Precautions Carp life is more ferocious, fish, crab polyculture should pay attention to control the timing of a good seedlings, and other crabs grow to about 60-80 / kg, the carp seedlings in the pond, can avoid the crab dung. At the same time, large-sized crabs should be placed as far as possible.
3 Feeding management
3.1 Feeding Feeding Crabs Feeding Crab Feeding Stick to the principle of “combination of meat and vegetarian dishes, and combination of green and refined ingredientsâ€. Before the carp seedlings in the lower pond, the fish fed with dung beetles should be fed with animal baits. As soon as possible, the dungeon should be grown to 60-80 kg/kg. 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. Carp feeds full-price fish pellets and sticks to the four principles.
3.2 Water Quality Regulation The fresh water quality environment of crabs is controlled at 35cm. In the high temperature season, water is added 10cm a day until the highest water level, and EM biological preparations are sprayed 1-2 times to improve the water environment.
3.3 Disease prevention and treatment Laminate lime and calcium dihydrogen phosphate in appropriate amounts every month to improve water quality. Use 10kg per 1/15 hectare. Squid is a carnivorous fish, fish, crab nesting can eat extra small trash fish shrimp. Keeping the water fresh and greatly reducing the incidence of disease.
3.4 The patrol pond observes the color, escape prevention, feeding and clam shells every day. So that you can take countermeasures at any time.
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