Mixed overwintering farming method of Portunus trituberculatus, Takifugu rubripes and Ruditapes philippinarum

Abstract

The invention discloses a mixed overwintering farming method of Portunus trituberculatus, Takifugu rubripes and Ruditapes philippinarum and belongs to the field of aquaculture. By making use of differences of ecological niches of species, Portunus trituberculatus, Takifugu rubripes and Ruditapes philippinarum are comprehensively overwintered and farmed in an indoor overwintering pond. It is prevented that Portunus trituberculatus preys on Ruditapes philippinarum; a protective net is used in a Ruditapes philippinarum farming zone, can prevent sand in the farming pond from flowing out during water changing and can also protect Ruditapes philippinarum. Ruditapes philippinarum is farmed in the 20% of the farming pond under the farming density of 100 individuals per m<2>; stocking density of Portunus trituberculatus is 5 individuals per m<2>; stocking density of Takifugu rubripes is 10 individuals per m<2>; when daily quantity of feed which is fresh trash fishes accounts for 5% of the weight of Portunus trituberculatus, ecological balance is exactly achieved for the three species in the farming pond; the feed is made full use, little water is changed, and resources are saved.

Description

technical field [0001] The invention belongs to the field of aquaculture, and in particular relates to a method for overwintering mixed culture of portunus trituberculatus, pufferfish and philippine clams. Background technique [0002] Swimming crab (Portunus trituberculatus) is an important marine economic animal. Because of its fast growth, large body and delicious meat, it is deeply loved by the masses and has high economic value. Therefore, it is gradually developed as a breeding object, with a breeding area of ​​500,000 mu and an output of 100,000 tons. It has become one of the leading species of marine farming in my country. At present, the harvest season of Portunus trituberculatus in northern my country is from October to November, and the average price is about 80 yuan / kg; before and after the Spring Festival, the average price is about 240 yuan / kg; at the end of March, the price of oviposit crab is 1,000 yuan / kg; therefore, in the huge economic benefits Driven by t...

AI Technical Summary

Problems solved by technology

During the overwintering breeding period, it is necessary to feed, pour the pond, and clean up the pollution, which takes up a lot of manpower and material resources and increases the cost of cultivation; and pouring the pond can easily cause puffer fish to be injured, infected, and die, resulting in a low survival rate of the culture; the amount of water exchanged every day is large, wasting water resource