If the fish pond is frozen for a long time, it will lack oxygen. After the fish pond freezes, the water surf
If the fish pond is frozen for a long time, it will lack oxygen. After the fish pond freezes, the water surface can not directly dissolve the oxygen in the air, and the photosynthesis of aquatic plants and other plants in the water body is weakened, and fish are prone to hypoxia. After the water surface of the fish pond freezes, the ice surface should be broken every morning and evening, and the broken ice should be taken out in time to avoid freezing again. If it snows, clear the snow on the ice of the fish pond in time.
First, the fish pond freezes, will the fish lack oxygen?
1, the fish pond will suffer from hypoxia when it freezes for a long time, because after the fish pond freezes, the water surface can't directly dissolve the oxygen in the air, and the photosynthesis of aquatic plants and other plants in the water body is weakened, so the oxygen produced will also decrease, which will easily lead to hypoxia of fish.
2. After the water surface of the fish pond freezes, open the ice surface every morning and evening. Generally, an ice cave of 5-6 square meters is needed for each mu of fish pond. Take out the broken ice cubes in time to avoid freezing again.
3. During the freezing period in winter, in case of snowy weather, the snow on the ice surface of the fish pond should be removed in time, so that the sun can shine on the water of the fish pond and the photosynthesis of green plants can be ensured normally.
4. During the wintering period, in addition to maintaining the highest water level and increasing oxygen to keep warm, fresh water should be injected regularly, which can improve the living environment of fish and increase dissolved oxygen. Generally, water can be injected once every 15-20 days.
Second, how to build rural fish ponds
1. To build fish ponds in rural areas, we should make good plans, such as the types of fish, the number of fish to be raised, how long to keep them, and so on. Then plan the area of the pond, the amount of water needed, the cost and benefit of feeding, etc. According to these.
2. After the planning is completed, the site selection construction will be started. Generally, fish ponds will be built near the water source, so it is more convenient to get water and the soil can't seep. Also pay attention to convenient transportation and stay away from pollution.
3. The area of fish pond depends on the kind of fish. If adult fish such as grass carp and carp are cultured, the fish pond area should be about 10 mu. And raising Luo Fei is generally between 3-5 mu.
4. Fish ponds cannot be put into use immediately after being dug, especially cement ponds, which need to be dealkalized and cleaned. When dealkalizing, acetic acid can be sprayed on the pool wall, while when cleaning the pool, bleaching powder or quicklime should be sprinkled on the pool to avoid the breeding of harmful bacteria in the pool.