Artificial culture method for Portunus trituberculatus

Abstract

The invention relates to an artificial culture method for Portunus trituberculatus in mariculture, and belongs to the technical field of agricultural mariculture. The artificial culture method consists of two parts of technology: 1, an integrated culture regulation method is carried out; and 2, anti-slaughter nets are arranged at the bottom of a pond, 300 nets are arranged in each mu and the slaughter on unshelled crabs by shelled crabs is reduced. The integrated culture regulation method comprises steps of: 1, performing pond regulation: dredging, sterilizing, drying sludge, fertilizing the fond, and laying pipelines at the bottom of the pond and sterilizing the water; 2, performing finite amount of water exchange; 3, regulating the water quality of the culture pond by using composite microorganism agents; 4, reasonable configuring and using aeration facilities; and 5, preparing feeds and reasonably feeding the feeds. Due to the application of the technology, the water quality of the culture pond is improved; the slaughter between the unshelled crabs and the shelled crabs is prevented; and the yield and economic benefit of the portunus trituberculatus are improved.

Description

field of invention [0001] The invention relates to an artificial culture method for portunus trituberculatus (Portunus trituberculatus) in the seawater culture industry, and belongs to the technical field of agricultural seawater culture. Background technique [0002] Portunus trituberculatus belongs to Crustacea, Decapoda, Portunidae, Portunus. It is widely distributed in sea areas such as China, Japan and North Korea. my country's portunus trituberculatus is mostly produced in the Yellow Sea, Bohai Sea and East China Sea, and the East China Sea has the largest amount of natural resources. According to analysis, the edible part of Portunus crab accounts for 49%, protein 15.9%, fat 3.1%, carbohydrate 0.9%, ash 2.6%, and other trace elements such as vitamin A, vitamin C, selenium, etc. are also relatively high. It is regarded as the top grade of seafood because of its unique flavor, which is favored by people and is very popular in domestic and foreign markets. [0003] Due...

AI Technical Summary

Problems solved by technology

[0004] After more than 20 years of exploration, my country's portunus trituberculatus breeding has broken through the indoor factory artificial seedling raising and outdoor earthen pond semi-ecological seedling raising technology, and has formed a variety of farming models such as tidal flat fence culture, shallow sea cage culture and pond culture, among which The cost of pond culture is low, the operation is simple, and the suitable area is wide. It has become the main culture method of portunus trituberculatus in the north and south coastal areas of my country. However, due to disease hazards and individual self-mutilation, the survival rate of culture is low, with an average of only 5-15 % or so, resulting in extremely unstable breeding benefits, seriously affecting the healthy development of the industry, and keeping the culture of portunus trituberculatus in my country at a low level for a long time