Fish pond management during the wintering period is divided into two situations, the first situation is the fish pond that has sold fish or plans to sell fish, this type of fish pond is mainly to clear the pond and disinfect the bottom, to prepare for next year's aquaculture, and to do a good job in the next year's breeding plan. The second situation is the fish pond that sells fish after wintering, the most important thing about this kind of fish pond is management, in general, it is to fatten the water in advance, gradually start to stop feeding, and increase the water level of the pond.
Pond management during wintering can start from the following aspects
1. Choose a suitable wintering pond
Choose a pond that is sheltered from the wind and the sun, the water source is stable, and the water quality is relatively good to build a wintering pond. The wintering pond controls the water depth to about 1.5m, and the whole pond is sprinkled with 75kg of quicklime per mu to disinfect it.
2. Rationally plan stocking density
Before stocking fry, do a good job of fish body examination, eliminate sick fish, especially check the health status of fish before stopping eating, and prescribe the right medicine for various diseases or minor diseases that are not obvious, so as to avoid the death of fish due to disease during wintering.
3. Scientific feeding and fertilization
Fish can still eat in late autumn and early winter, so you should insist on feeding some concentrates, plus greens, tender grasses and so on. At the same time, appropriate fertilization is applied to maintain a certain degree of fertility in the pond water body in order to enhance the physique of the fish and accumulate nutrients to meet the needs of wintering.
4. Strengthen the management and regulation of water bodies
To strengthen pond water quality management and improve the quality of water bodies, it is generally possible to sprinkle multi-functional pond improvers into ponds after a few days of non-eating. Secondly, regularly adjust the water quality, keep the water quality fresh and tender, often patrol the pond, observe the change of water color in the morning, middle and evening, so that the pond water is fat, live, tender, and cool, and regularly fill new water and discharge old water.
5. Regular liver protection and bile protection
The mixture is used to protect the health of the liver and gallbladder, enhance the physique of the fish, improve the fish body's disease resistance and cold resistance, and enhance the ability to overwinter, especially before wintering, the net work should be careful and meticulous, and the fish body should not be injured.