Experience of placing cages in flat-bottomed river with fish culture
Flat bottom river water depth of more than 2.5 meters, year-round water level changes little, with cage fish is very good.
1) Generally speaking, the height of the net bottom from the bottom of the water is 50 cm. Between the bottom of the net and the bottom of the water, there is a gap to facilitate the flow of water. On the one hand, it can increase oxygen, and on the other hand, it can exchange water and improve water quality. The height of the net box body can be 2.5~3 meters. This deep immersion leaves a net 50 cm high on the surface to prevent jumping fish from escaping. It is best to cover the net to prevent birds from stealing fish.
2) It must be noted that the net cage should be placed in the sun, where the flow rate is moderate or where there is backflow. As far as the whole river channel is concerned, there are often places where fish are concentrated, where the flow velocity is moderate and the bait is sufficient, which is very suitable for fish growth.
3) If the river channel is not deep, bamboo piles can be used to tie the box with ropes, and mark the mark line of the net cage water depth on the pile, so as to adjust and stabilize the depth of the net cage in time. Tie rope with slipknot, easy to lift box.
4) This kind of fixed net cage, along the rope system on the top and bottom of the box straight strips, upper and lower classes can be used thin bamboo poles, lower classes can also be used iron strips, etc., the whole net cage stretched straight, avoid net clothes in the water fold, reduce capacity. Collars are installed at the four corners of the net cage. When in use, the rings at the four corners are sleeved on the bamboo piles, and the formed net cage is firmly tied on the bamboo piles, so that culture can be carried out. The rings can also be tied to bamboo piles, four from top to bottom, and the whole net body can be controlled by pulling ropes to adjust the draft of the box body in time along with the water level. Food is most abundant where the water is moderate. The box is straight and straight, and the fish are most comfortable.
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Experience of overwintering and seed conservation of cultivated ricefield eel
Practice has proved that good overwintering and seed conservation of Monopterus Albus can ensure high yield and harvest in the coming year. Harvesting Monopterus Albus: cultivated Monopterus Albus should be harvested in Qingtang before overwintering. The collection methods are as follows: 1. Some eel cages are made of bamboo, and baits such as pig liver and earthworms are placed around or at the bottom of the pond at night.
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Raising cattle in spring needs to prevent three kinds of diseases
1. There are three clinical types of symptoms of bovine lung disease. (1) Acute septicemia: sudden rise in body temperature above 40 ℃, rapid pulse, loss of appetite, rough coat, dry nose, dyspnea, cessation of rumination, sometimes nasal discharge and tears, diarrhea, feces.
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