Location of the pond: it is required to be close to the water source, with good lighting and convenient transportation. There is no industrial and urban pollution around, free from pesticides and toxic wastewater, and easy to irrigate and discharge.
Water source: rivers, lakes and reservoirs with no pollution and abundant water, as well as deep wells and tap water can be used as aquaculture water sources.
Water quality: According to the ecological habits of Misgurnus anguillicaudatus, the dissolved oxygen in the cultured water should be above 3.0 mg/L, the ph value should be between 6.0 and 8.0, and the transparency is about 15 cm.
Soil quality: Soil quality has a great influence on loach culture.
Misgurnus anguillicaudatus, which grows in clay, is yellow, rich in fat, soft in bones and delicious. Misgurnus anguillicaudatus, which grows in sandy soil, has black body, less fat, hard bones and poor taste.
Therefore, the soil of loach pond is neutral or weakly acidic clay.
How to build a culture pond The loach culture pond should be built in a place with sufficient sunshine, good water source conditions and convenient management, with an area of no more than 2,000 square meters, which is convenient for irrigation and drainage, fertilization, pesticide application and feeding.
Pool depth 1- 1.2m, water depth 0.8-0.9m, bank slope 60.
~70。
Brick walls can be built and leveled with cement mortar, but the bottom is not sealed, and 20-25cm humus soil is laid on the bottom.
If the conditions are not enough, you can directly build a soil pool, and the wall of the pool should be steep, compact and watertight; Anti-escape nets are installed at the inlet and outlet, and fences are made around the pool with nets, calcium plastic plates or porcelain plates to prevent snakes, rats and other enemies from entering; A pit with a length of 0.8 m, a width of 1 m and a depth of 0.6 m can be dug at the outlet of the pond to facilitate centralized fishing.
How to clean and disinfect aquaculture ponds. To do a good job of cleaning and disinfecting the loach pond, it must be carried out in two steps: the first step is to clean the pond; The second is drug disinfection to kill enemy organisms and pathogens.
Generally, about 15 days before stocking loach fry, drain the pond water, plug the loopholes, build dikes, eradicate the weeds beside the pond, and dredge the inlet and outlet pipes.
Expose the pond for 4-5 days before disinfection with drugs.
The commonly used disinfection drugs for pond cleaning are: quicklime, bleaching powder, bleaching essence, trichloroisocyanuric acid and tea residue.
Generally speaking, quicklime is used to clean ponds. The specific method is: leave 5- 10 cm of water in the pond, dig some small pits in the pond, put the quicklime into the small pits, and immediately spread the quicklime evenly all over the pond after it becomes mud.
75 kilograms of quicklime is used for each mu of pond.
After pouring quicklime, the silt at the bottom of the pond was plowed with an iron rake the next day.