Fish breeding method in flowing water of river

Abstract

The invention provides a fish breeding method in flowing water of a river. The method comprises: selecting a river; selecting one or more sections of riverways with stable water flows and abundant water quantities from the river; constructing a diversion canal along the river bank in the selected riverway, wherein the diversion canal is communicated with upstream river water in the riverway; constructing fish ponds, at one side close to the river, in the diversion canal, wherein the quantity of the fish ponds is not small than one and the fish ponds are sequentially arranged along the river bank, and the bottom heights of the fish ponds are greater than the average water level height at the relatively low side of the reiverbed; and constructing water supplying and draining facilities for the fish ponds. According to the method provided by the invention, a barrage is used for storing water to breed fishes, and the water quantity of the river is uniform and abundant; the diversion canal draws water from the barrage and supplies water sources for the fish ponds through water diversion pipes; the water diversion pipes can be rotatably adjusted; when water is needed to be drawn, the orifice faces the water coming direction, water in the diversion canal is poured into the fish ponds from the water diversion pipes; when water is is not needed to be drawn, the orifice is moved upward. A drain pipe in the bottom of an anti-flood wall is used for discharging water in the fish ponds out of the riverway when water is needed to be changed.

Description

technical field [0001] The invention relates to the field of aquaculture, in particular to a method for raising fish in river running water. Background technique [0002] In recent years, with the development of the economy and society, the market demand for special aquatic species has become higher and higher, and the quantity is increasing. The amount of natural resources of rare and precious aquatic animals such as carp has been decreasing year by year, reaching the point of extinction. Due to the limitation of water sources, irregular pond construction, poor feed quality, gradual deterioration of the breeding environment, and the low technical level of the farmers, there are currently several major problems in white turtle farming in many parts of the country: First, the gonad development of broodstock is poor , the spawning rate generally only has about 50%, and the fertilization rate is about 60%, and the quality of the eggs is relatively poor, and the fertilization r...

AI Technical Summary

Problems solved by technology

Due to the limitation of water sources, irregular pond construction, poor feed quality, gradual deterioration of the breeding environment, and the low technical level of the farmers, there are currently several major problems in white turtle farming in many parts of the country: First, the gonad development of broodstock is poor , the spawning rate generally only has about 50%, and the fertilization rate is about 60%, and the quality of the eggs is relatively poor, and the fertilization rate is low; the second is that the survival rate of large-scale fish species (5-8cm) is relatively low, generally only about 30%; The 3rd, the breeding cycle of adult fish is long, generally more than 3 years, and the survival rate (raised from 5~8cm fish fingerlings to about 600 grams of commercial fish) is only about 60%; The survival rate is low, and it seriously affects the quality of white soft-shelled turtles

The breeding of rare fish such as giant salamander, Dabry's sturgeon, Iwahara carp, mullet, and long-snout fish requires intensive running water aquaculture, but there is no scientific method at present

Images