Key Points of Loach Farming Technology and Overwintering Management in Heilongjiang

Heilongjiang lies in the cold temperate zone, with long, cold winters, but it has numerous rivers and wetlands, and the fresh water with ample dissolved oxygen provides good natural conditions for loach farming. The loaches farmed locally are mainly northern loach, which have relatively strong cold tolerance. Although their growth cycle is shorter than that in the south, loaches grown in low-temperature environments have firm flesh and good taste, and are quite well received in the market.

The farming pond should be chosen in a place close to a water source, convenient for drainage and irrigation, sheltered from the wind and facing the sun, and a certain thickness of soft mud should be kept at the bottom of the pond so that the loaches can burrow into the mud to rest and escape severe cold. Before releasing the fry, the pond should be cleaned and disinfected, and enough base fertilizer should be applied to cultivate natural food. The stocking density should be flexibly controlled according to the size of the water surface and the water source conditions, avoiding excessive density that causes oxygen deficiency and disease.

Loaches have a relatively omnivorous diet; they can feed on plankton and aquatic insects, and can also adapt to formulated feed. When feeding, stick to fixed times and fixed amounts, and adjust promptly according to water temperature and feeding conditions. During the high-temperature stage in summer, pay attention to adding fresh water and regulating water quality to keep dissolved oxygen sufficient. At the same time, screens should be installed at the inlet and outlet to prevent escape.

Overwintering management is a key link in loach farming in Heilongjiang. Before winter begins, the water level should be appropriately deepened so that the loaches can burrow into the bottom mud to hibernate. After freezing, dissolved oxygen in the water body can be replenished by cutting ice holes or using aeration equipment to prevent losses caused by oxygen deficiency. During the overwintering period, human disturbance should also be reduced to ensure that the loaches safely pass through the cold winter.

Overall, loach farming in Heilongjiang should focus on three links: fry selection, water quality regulation, and overwintering stock preservation. Loaches themselves have strong adaptability, relatively good disease resistance, and a wide range of feed sources. As long as management is proper, it is a farming project relatively suitable for increasing local aquatic product income.