Pond construction of Pelteobagrus fulvidraco cultured in running water

I) Water quality and water sources

1. Water quality requires that the water quality of Pelteobagrus fulvidraco cultured in running water must be determined before determining the culture operation to see whether the water quality meets the water quality standard of pollution-free culture. For example, whether the waste hot water discharged by industry has been polluted by industrial oil, and whether the mineral content of underground hot spring water exceeds the standard is the object of concern.

two。 The water source requires that the water source of Pelteobagrus fulvidraco cultured in running water should be sufficient, and the water supply will not be stopped due to the influence of man-made or natural factors. If it is industrial surplus hot water or underground spring water, it is best to have a spare water source while considering sufficient water sources; for the construction of flow ponds using the flow of rivers, attention should be paid to the effects of droughts or floods and rainy periods on the water use of fish ponds.

II) Construction of fish ponds

1. Fish pond shape Pelteobagrus fulvidraco fish pond is mainly cement pond, fish pond shape is mostly rectangular, of course, there are round, oval and other irregular shapes. To determine the shape of the pond should proceed from the reality, so that the water in the fish pond can flow smoothly everywhere, that is, there is no dead corner where the water can not flow.

two。 Area size Pelteobagrus fulvidraco pond area requirements are not very strict, but considering that running water can flow smoothly everywhere in the pond, the general area of a single pond is about 40,400 square meters.

3. Fish pond layout for standardized, batch-type running water culture of Pelteobagrus fulvidraco, the number of fish ponds is more, so it is necessary to consider the layout of fish ponds. The layout of fish ponds can be divided into three types: serial type, series type, parallel type and so on.

4. The construction of intake and drainage system is the core content of Pelteobagrus fulvidraco culture, including inlet and drainage channel, nozzle, anti-escape grid and sewage discharge system.

(1) the intake system requires that the intake channel should not be too far away from the fish pond in the industrial warm water culture and underground hot spring culture carried out by using the factory waste hot water, so as to prevent the heat energy of the water from being released too much. The modes of water intake are overflow type, direct type, scattering type, water curtain type, spray type and so on. All localities should, according to their own conditions, adjust measures to local conditions and grasp them flexibly.

(2) the drainage system consists of two subsystems: drainage and sewage discharge. The outlet can be a culvert gate or a self-flow with a limited water level. For sewage, it is to discharge the excreta and residual feed of the fish at the bottom of the pond, generally speaking, the bottom of the rectangular fish pond shows a slope of 100 from the inlet end to the outlet end, and when the diameter of the drainage and sewerage pipe mouth is more than 10 cm, it has a larger water absorption and can discharge the dirt. Like the water inlet, the outlet should set up a special fence to prevent the escape of Pelteobagrus fulvidraco, as well as facilities to adjust and control the water level.