The pond conditions for sturgeon farming include the location of the pond, the water source and water quality, the area, the depth of the water, the quality of the soil, and the shape of the pond and the surrounding environment. Below we understand the sturgeon pond culture conditions and facilities requirements, for friends engaged in farming reference.
First, the location of the pond selection
To choose sufficient water, good water quality, transportation, power supply is convenient, so that is conducive to injection, drainage, but also conducive to bait, fish species, commercial fish transportation and sales. But the sturgeon breeding taboo surroundings noisy, too noisy environment will affect the sturgeon eating and growth.
Second, the water source and water quality conditions
Ponds should have good water conditions to facilitate the filling of new water. Due to the high density of fish breeding in the pond, high yield, baiting, pond water dissolved oxygen is easy to insufficient, resulting in deterioration of water quality, so that the fish serious floating head and a large number of deaths. Sturgeon on the high requirements of dissolved oxygen, general dissolved oxygen must be maintained at 5-6 mg / liter, dissolved oxygen in the water 2.5 mg / liter that affects feeding, 1 mg / liter when the death of floating head.
Third, the pond area requirementsRaising adult fish (commercial fish) pond area should be relatively large, large area, a wide range of fish activities, by the role of the wind, the wind not only increases the dissolved oxygen, but also the pond up and down the water layer can be mixed to improve the dissolved oxygen conditions of the lower water layer.
In addition, the water body is large, stable water quality, not easy to change suddenly. But the area is too large, baiting, fishing is more difficult, the management is not convenient, the pond dike is easy to be washed out by the wind and waves. Therefore, it is generally believed that the area of about 10 acres is more appropriate.
Fourth, the pond depth requirements
Feeding river pure fish adult ponds need a certain depth of water and water storage, in order to increase stocking, improve production. The deeper the pond, the larger the water storage, the more stable water quality, the more favorable to the growth of fish. But the pond is not the deeper the better, such as the pond is too deep, the lower water light conditions are poor, low dissolved oxygen, coupled with the decomposition of organic matter, will cause the lower water often lack of oxygen. Practice has shown that the perennial water level of intensive fish ponds should be maintained at 2-2.5 meters.
V. Substrate and shapeGeneral finishing pool to loamy soil for the best, the bottom of the pool silt should not be more than 5 centimeters, the fish pool to the east-west long north-south wide rectangular pool for the best, so that the shape of the pool pool ridge less shade, the surface of the water for a long time of sunlight, which is conducive to the photosynthesis of phytoplankton, coupled with the role of the waves on the surface of the water during the summer months, the pool water in the dynamics of the natural oxygenation can be reduced to reduce the head of the fish floaters.
The rectangular aspect ratio of 5:3 is appropriate, not only beautiful, but also conducive to feeding management and pulling the net operation. The pond should not be surrounded by tall trees and houses, so as not to block the sunlight and wind blowing.
Six, the transformation of the pond and cleaningGood pond conditions refers to the area of moderate, 8-30 acres; water is deeper, about 2.5 meters; there are good water sources, injection and drainage is convenient; the pond shape is neat, the bottom of the pond is a tortoise-back shape or tilt shape, if you can not meet the above requirements, it should be transformed. After a cycle of feeding, the bottom deposited a large amount of silt (general annual deposition of about 10 cm), it should be in the dry pool after fishing, the bottom of the pool silt digging up and drying after reinforcing the slope ridge.
Clean up the pond, when injecting new water should be filtered using a dense mesh (40-60 mesh sieve silk), to prevent wild fish from entering the pond, and so on after the disappearance of the effect of the drug, before being put into the fish species.