Matters needing attention in cage culture of ricefield eel

Now the best way to cultivate Monopterus Albus is cage culture. There can be 30 cages per mu of paddy field, and the cost of each cage is 50 yuan, and each cage can plant 10 kilos of rice field eel. By the time we sell it, the rice field eel in each cage is about 60 jin. If we choose maggots as the main feed for Monopterus Albus, we need 4 jin of maggots for every 1 jin of Monopterus Albus. From the seedling to the mature sale of our rice field eel, it takes about 200 jin of fly maggots, and the cost of breeding 1 jin of maggots is 30 cents. Therefore, the cost of each cage of rice field eel is about 260 yuan, while the sales income of rice field eel fed in each cage is about 2400 yuan at the end of the year, so the profit of rice field eel culture can reach 60 thousand yuan per mu. It can be seen that raising ricefield eel in cage is our best choice.

Site selection

In order to maintain a good ecological environment of Monopterus Albus, the choice of breeding site is very important, we should choose sunny, ventilated, good water source, water depth should be more than 1m.

Selection of cages

The mesh cloth for making the cage should be about 20 mesh, and polyethylene is the best mesh material, and the mesh cloth must be interspersed to prevent the mesh from being expanded by Monopterus Albus, making Monopterus Albus escape. There are two sizes of cage for ricefield eel culture, one is 3m long, 2m wide and 1.2m high, and the other is 10m long, 1m wide and 1.2m high. This can be chosen freely according to the breeding site. There are two main ways to put the cage into the pond, the fixed cage is used in the water depth of 1m-1.5m and the floating cage is used when the water depth is more than 2m. Choose freely at 1.5-2m, which should be determined according to the drop of the pond water level. if the drop is very large, it is best to use floating cages. The density of the cage placed in the water is also affected by the depth of the water, and the area of the cage under the water depth of 1-1.5m is better than that of the pond area. If the water depth is more than 2m, it can account for 1x2 of the pond area. The underwater depth of the cage shall not exceed 50cm at most.

Aquatic plant

Water hyacinth is better than water hyacinth. If the local temperature is too low to produce water hyacinth or there is no water hyacinth for other reasons, water peanut can also be used for cultivation. The roots of wild "water plants" (water peanuts or water hyacinth) are generally underdeveloped. We need to cultivate wild "water plants" for a period of time to make their roots developed to meet the needs of raising ricefield eel. Phosphate fertilizer can make the roots of "water plants" develop. Urea can make its branches and leaves flourish (there is no above process for the root system of "water plants" to develop). Lay "water plants" in the cage as far as possible to cover the whole cage, and then kill and disinfect it. Crystal trichlorfon can be used to kill insects, and bleach can be used for disinfection.

Seedling harvesting

There are two main sources of rice field eel seedlings, one is purchased directly from eel catchers, and the other is purchased directly from experienced farmers. The selection of rice field eel seedlings is the most important link, which directly determines the success of rice field eel culture. Monopterus Albus seedlings should choose the surface without scars, with vitality. Ricefield eel paralyzed body is absolutely impossible to raise, this kind of ricefield eel is very easy to catch, usually a lot. If the mucus on the surface of the rice field eel falls off, it indicates that the rice field eel is suffering from fever, which can be judged by feeling the stickiness of the water (note: even if the rice field eel has good vitality, it is not easy to grasp, but the water is very sticky).

Disease prevention

As soon as the rice field eel is on the grass, it is best to sell it as soon as possible. This kind of rice field eel is currently untreatable. Usually pay more attention to observation, if it is found that the body surface of Monopterus Albus grows white hair, which is a symptom of water mildew, you can use gallnut decoction to sprinkle the whole pool. Chlorine dioxide can be used to sprinkle the whole pool to prevent the occurrence of diseases.

Selection of bait

The bait of Monopterus Albus is mainly earthworms, maggots and miscellaneous fish. The choice of bait is generally free to choose according to the situation of each place. Earthworm is the best bait for ricefield eel, but its price is very high and resources are scarce, so earthworms are generally not used as fodder for cultivated ricefield eel. Fly maggot is the best bait for artificial culture of ricefield eel, which has high yield, low difficulty and a wide range of raw materials. Miscellaneous fish are generally used in areas with rich fish resources and low prices. It is more convenient to use miscellaneous fish as bait for ricefield eel. You don't have to raise them by yourself. You can feed them directly after beating them into fish paste.

The sale of ricefield eel

Monopterus Albus should be sold at the time of the highest price (around the Spring Festival), which is about three times the usual price. When selling ricefield eel, try to separate the size of ricefield eel. The price difference of ricefield eel with different specifications is very large. About 200g of rice field eel can sell for about 40 per jin, while those under 25g can only sell for a little more than 20 (this price is for reference only). A net cage (6 to 8 square meters) invests about 20 jin of seedlings, and a total of more than 60 jin of finished eels can be harvested by the end of the year. (if you can't reach this level, you should review your own technical experience). The net increase is about 40 jin. The transfer price at the end of these years is above 30 yuan, so after deducting the cost, a net cage can make a net profit of more than 1000 yuan. The surface of a pond of 3 to 4 mu can hold at least 100 cages, so it can make a net profit of more than 100000 yuan a year. The bigger the scale, the more you earn.