River crab cultivation method

Abstract

The invention discloses a river crab cultivation method. The river crab cultivation method comprises preparing a cultivation site; irrigating water 15 days before crab seeds are put into the cultivation site and enabling the height of a water surface to keep between 10 and 12 cm; sterilizing the cultivation site; pouring water to enable the height of the water amount to be increased to 25 to 30 cm 8 to 10 days before crab seed putting, sterilizing the cultivation site through quick lime emulsion and oxygenating a cultivation pond through an oxygenating machine 24 hours after the sterilization; planting alligator weeds on the water surface; immersing the crab seeds through salt solutions with the concentration to be in 3.5 to 4.5 % for 8 to 10 minutes before the crab seeds are put into the cultivation pond and feeding fodder after the crab seeds are put into the cultivation pond; performing daily feeding and management of the crab seeds in the growing period, namely feeding bean curd, small trash fish cream and adult brine shrimps at the initial stage after the crab seeds are put into the cultivation pond, feeding bean cakes and fish cream after the crab seeds grown into baby crabs and feeding mixed type fodder at the intensive culturing stage of the baby crabs. The river crab cultivation method has the advantages of avoiding seed loss, improving the survival rate of the river crabs, reducing cultivation costs and improving economic benefits due to the fact that the crabs which are cultivated in green houses are fed in combination with reasonably matched fodder.

Description

technical field [0001] The invention relates to a method for cultivating aquatic products, in particular to a method for cultivating river crabs, and belongs to the technical field of cultivating agricultural products. [0002] Background technique [0003] Chinese mitten crab, also known as river crab, is a migratory crustacean. Its individual is hypertrophy, grows fast, has a plump body, tender meat, delicious taste, and high nutritional value. Every 100 grams of fresh meat contains 14 grams of protein, 5.9 grams of fat, and 7 grams of carbohydrates. In addition, it is also rich in minerals and vitamins. [0004] In the early 1950s, the natural output of mitten crab seedlings in my country was over 1,000 kilograms. In the early 1970s, the production of commercial crabs had a large recovery through the artificial release of crab seedlings. However, with the river pollution brought about by the development of industry and agriculture and the super-intensive fishing of pare...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to: provide a kind of river crab culture method, solve the technical problem that existing river crab culture mortality rate is high, yield is not high, and the finished product crab quality of culture is not good, thereby can effectively solve the problem existing in the above-mentioned prior art question