Large-scale ecological culture method of hairy crabs from yellow river estuary based on ponds on coastal saline-alkali land

Abstract

The invention discloses a large-scale ecological culture method of hairy crabs from the yellow river estuary based on ponds on a coastal saline-alkali land. The method includes the following steps that 1, high-quality larval crabs are selected, and the quality of larval crabs to be bred outside is ensured; 2, the larval crabs are put in the ponds in advance, and the growing period is prolonged; 3, the stocking density is controlled, and large-size larval crabs are put in the ponds; 4, aquatic plants are planted, and an ecological environment is simulated; 5, the water quality is regulated, and the healthy growth of the hairy crabs is promoted; 6, high-quality bait is poured to meet the nutritional needs of hairy crab growth and needs of hairy crabs for bioactive substances; 7, molt-period management is well done, and the survival rate of the hairy crabs is improved; 8, ecological disease prevention is well done, and pollution-free agricultural products and organic food are produced; 9, daily inspection is well done to know the hairy crab breeding state in time; 10, scientific catching is conducted at the right moment so as to meet the market demand. According to the method, the size of the adult hairy crabs from the yellow river estuary is increased by 92% or above, the yield per mu is improved by 58% or above, and the proportions of liver, muscle and gonad to the body weight are each improved by more than 10%.

Description

technical field [0001] The invention relates to the field of coastal aquaculture, in particular to a method for large-scale ecological breeding of hairy crabs in the Yellow River Estuary based on coastal saline-alkali ponds. Background technique [0002] The scientific name of hairy crab is Chinese mitten crab, commonly known as river crab, hairy crab, crab, etc. It is the freshwater crab with the largest output among crabs in my country. Its edible part is rich in protein, fat, vitamins and minerals, and has extremely high nutrition, health care and Medicinal value. Hairy crabs are highly adaptable and widely distributed in my country. They can be found from the Yalu River in Liaoning in the north to the Leizhou Peninsula in Guangdong in the south. It can even be found in Shashi, Hubei, which is more than 1,000 kilometers away from the ocean. Since the Yellow River diverted from Dongying City in the northeast of Shandong Province and flowed into the Bohai Sea, a large numbe...

AI Technical Summary

Problems solved by technology

In fact, the development level of aquaculture is not balanced enough, and the quality of crabs is not stable enough, which also restricts the promotion of the brand of hairy crabs in the Yellow River Estuary to a certain extent.

[0009] After careful analysis, it is known that there are many reasons for the small size and unstable quality of hairy crabs in ponds in the Yellow River Estuary. scientific farming method

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