1, select seeds.
At present, there are two kinds of seed sources for farmers, one is obtained by rice field eel seedling dealers, and the other is brought back from other places for breeding. Good fry is very important for the culture of Monopterus albus. Many novices often fail in this step. Injuries on the body surface, vertical piles, paralysis and tummy turning, and spasms and circles should be eliminated.
2. Sowing date
Generally, in June and July when the water temperature is stable, the water temperature does not freeze, preferably above 24 degrees, and the temperature difference between day and night is small. Pay attention to the weather forecast when releasing seedlings. Seedlings can be released for more than 2 consecutive days, and it will be sunny for at least 3 consecutive days after seedling release. The north wind does not breed seedlings, and the west wind does not recommend seedlings. It's better to be in the south wind, which is warmer.
3. Water quality management and supervision
Water quality management is mainly to stabilize water level and prevent water quality from deteriorating. The measure is to change the water regularly in time. Usually, the water is changed once every 20 ~ 30 days, and once every 5 ~ 10 days when the temperature is high in summer, and the amount of water changed each time does not exceed one third.
4. Water temperature management
Take measures to control the water temperature within the suitable growth and feeding range of Monopterus albus. When the temperature is high in summer, low-temperature water can be added to adjust the depth of the cage, aquatic plants can be planted on the water surface, and black shading mesh cloth can be covered on the pool or a sunshade can be built.
5. Waterworks management
Timely control the area of aquatic plants in cages, and keep the coverage rate of aquatic plants above 90% in summer, and decrease to about 80% after autumn. For cages with poor growth and small area distribution, aquatic plants should be replenished in time, and dead and rotten aquatic plants should be fished out in time.
6. Escape prevention management
Mainly take measures to enter and exit the water inlet regularly to prevent escape. Before the cage is put into use or cultured, it should be regularly checked for damage to prevent man-made damage and rats biting the cage. Branches and leaves of aquatic plants in cages should be trimmed in time. When adding water to the pond or encountering heavy rain, the height of the cage should be raised in time, and when draining the pond, be careful not to hang the box.