The cage fish culture technology is a three-dimensional aquaculture technology that makes full use of reservoir resources. It has the advantages of low breeding cost and high benefits, and is deeply loved by the majority of fish farmers. Among them, the use of cage culture bud technology is one of the most profitable among many breeding projects. The relevant technical points are as follows:
First, do a good job cage structure
The cage material is polyethylene, the cable diameter is 1.13 millimeters, the mesh size is 3-5 centimeters, and the cage size is 4 meters 7 meters 2 meters. The single-layer cage is used, the frame is bamboo raft, and the bamboo raft has a diameter of about 10 centimeters. , A number of connected as one, with Shenzi fixed cage position, so as not to be elegant.
Second, place placement
The placement of cages is extremely important, directly affecting the growth rate of the calyx. It is generally required to be placed in a wide water area, with micro-flowing water, good water quality, no pollution, sufficient sunlight, sheltered from the sun, high water temperature, abundant food organisms, and close to the shore. The water depth is 4-7 meters, the wind is small, and the convenient reservoir area is suitable.
Third, scientific fish species,
The best time for stocking fish is 11-12 months each year, or 2-3 months of the following year. The water temperature is low, transportation is convenient, fish body injury is light, and the survival rate is high. The stocking specifications are about 80 grams or 350 grams respectively. 80 grams of fish species each put 450-550 tails, 350 grams of fish species 200-250 tails per box. The fish species to be put into use ensure that the specifications are robust and tidy, and they are strictly sterilized before and after entering the box to prevent the occurrence and death of aquatic fungus. Before the fish species are put into the box, because the fish is injured due to transportation and shipment, water mold is prone to occur when the water temperature is low.
Fourth, careful management
The success or failure of cage culture of flower pots, feeding and management is very important, good management, can accelerate the growth of calyx, increase production and obtain better economic benefits. Otherwise, due to poor management, resulting in slow growth, high morbidity, and even escape, breeding fails. Feeding management mainly includes the following aspects:
1, bubble box. The new cages have a rough surface, and direct loading of fish can easily cause damage to the surface of the fish body. Therefore, it must be soaked in the library 7-10 days in advance to allow the network cable to become soft.
2, brush box. When cages are placed in the reservoir, due to the action of plankton in the water, a lot of dirt is adhered to the cages, which affects the exchange of water and causes the reduction in the number of plankton in the tanks, and thus the calyx grows slowly due to the shortage of food organisms. Therefore, the cages must be brushed frequently, and they should be brushed once every 15-20 days during the general growing season.
3, move. There are two cases of movement: First, in the flood season, mobile cages are prevented from being washed away by floods and winds; the second is to increase the biological content of food in cages by moving cages to accelerate the growth of calyx.
4, feeding. In case of a reservoir with a relatively thin body of water or a large number of cages, other methods cannot increase the amount of food organisms in the tank. In this case, it is necessary to stack or suspend organic fertilizers or fertilizers around the cages, and the fertilizers should be suspended in the absence of wind.
5, box. After one year of breeding, most species of fish grow 10-20 times. In order to ensure the normal growth of fish in the box in the spring of next year and avoid the lack of dissolved oxygen and bait in the box, it must be bred in a box to ensure the growth space.
6, see management. During the growing season, cages need to be inspected frequently to observe fish activity and find problems to take timely measures to prevent fish from escaping. In winter, unsold fish should be kept together to prevent the wind from blowing through the cage or being stolen.
V. Listed sales
At the end of the fall, the temperature of the reservoir dropped to 10°C, and flower buds stopped growing and began to harvest and sell flowers. At this time, the input of 100 grams of flower pots can grow to more than 500 grams. Each box can produce more than 200 kilograms of flower pots. After the box is divided into the following year, it can grow to more than 1,500 grams. 350 grams of flower pots can be grown up to 1000 grams, and each box can produce more than 250 kilograms of flower pots. After a year of sub-boxing, it can grow to more than 2500 grams, and the aquaculture benefits are considerable.
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