It is a new type of aquaculture that utilizes natural baits, low investment, quick effect, no need to increase oxygen, save labor and capital, and fully utilizes natural resources in the water network area in large water surfaces such as lakes, rivers and reservoirs. One of the resources development projects. 1. Choose the normal water depth of 1.5 to 2 meters in the surrounding area, rich in aquatic grasses and plankton, and the water surface of non-water transportation can be used as a fence to aquaculture. The method is to use wood piles, bamboo and other scaffolds to support the fish nets into a community, its area, shape can be adapted to local conditions, generally about 100 acres (1 mu = 667 square meters) is about a community, to facilitate management and fishing operations. 2. In the community where fingerlings are bred for fish breeding, large-size two-species fish should be stocked, and fish species of upper, middle and lower layers should be matched. Special types of aquatic products such as pearl clams and hairy crabs can also be properly bred. However, it should be noted that fish species that do not have good teeth, meat, drillability, and good jumping must not be stocked in order to avoid killing and breaking nets, drilling nets, and jumping nets to escape each other and causing losses. 3. Feeding methods There are two types of feeding methods for community seine fish farming. One is bait. This method is relatively simple and is mainly applicable to feeding pelleted food. If it is a powdery bait, it should be mixed with water and moistened before casting, and it should not be too close to the fence, otherwise it will cause waste due to wave impact drift. The second is hanging bag. First, set up a number of feeding points in the community, insert wooden stakes or bamboo poles for hanging and hanging bait bags, and then use roving bags to hold the bait suspended on the pile raft, immersed in water 15 to 20 cm, let the fish slowly food. This kind of fixed point bait feeding method is very economical and effective for live water fish farming. 4. Pay attention to anti-fence community seine fish farming, should pay special attention to prevent escape. On weekdays, special personnel are required to take care of them and often check the condition of the purse seine facilities so as to prevent the loss of nets and human losses. Before the storm or flood comes, it is necessary to do a good job of strengthening and enhancing the fence. In addition, some waterfowls (such as geese and ducks) can be stocked as alarm animals in the area to allow farmers to detect broken nets, inverted shelves and intrusions of wild animals in time. 5. In order to catch the fish in the area, the catch can not be used for dry catching. Therefore, it is only possible to use fishing nets such as trawls and screens to fish in stages. During fishing, the mesh size of the fishing tackle should be determined according to the length of time the fish is to be fed and the size of the fish body, so that large catches and small catches can be obtained; and after the catch, the fish should be added in time to maintain a certain density of fish in the community. During fishing, it is also important to note that if there are fish that have meat, teeth and drillability, they will be caught regardless of size to prevent them from eating other fish and damaging the fence.
Heat Sealing Gusseted Reel,Induction Sealing Machine ,Sterilization Reel ,Peel And Seal Aluminum
Disposable Medical Supplies Co., Ltd. , http://www.nbsterilizationpouch.com