Trout fry cultivation can be carried out in ponds, cement ponds, glass steel sinks, canvas sinks or in cages. 1. There are no strict rules for the specifications of the cement pool used for breeding of carp seedlings. The small ones are generally 5 to 30 cubic meters and the water depth is 0.7 to 1.3 meters. The large pools are generally 50 to 200 cubic meters and the depth is 1.5 to 2 meters. The pool is diverse, with rectangles, squares, circles, ellipses, polygons, etc. Seen from the cultivation effect, the small pool is more convenient to control and operate than the large pool, and the survival rate of the nursery is higher, but the operation is more troublesome; the large pool is more suitable for the large-scale production of the enterprise, and the higher total output can be obtained, but the control And management is more difficult, especially when there is a pandemic. The shape of the pool is preferably round and octagonal. China's productive seedlings are mostly carried out in cement ponds. 2. If cultivated in a pond, the pond area should be 600 to 1,300 square meters and the water depth should be about 1 meter. It is required that the water source is sufficient, the water quality is good, and drainage and irrigation are convenient. 3. When cages are used for cultivation, the specifications of the cages should be 2m 2m 3m or 3m 3m 3m, ie a covered cage with an area of ​​4 to 9 m 2 and a depth of 3 m. The mesh is a knotless mesh, double layer, mesh 0.6 to 1 cm. Net cages can be installed in water bodies such as sea areas or freshwater lakes and reservoirs, and are floating cages. As a water body or facility for breeding eel fry, all fry must be strictly disinfected before stocking. Frequently used disinfectants include quicklime, bleaching powder, and trichloroisocyanuric acid. Pond cultivation is generally disinfected with quicklime, the specific approach is: 10 days before the stocking of fish fry, per 100 square meters of water with quick lime 20 ~ 25 kg whole pond spilled. Cement ponds, other types of sinks or cages, etc. are often disinfected with bleach or trichloroisocyanuric acid. Dandong Nondestructive Testing Equipment Co.,Ltd manufactures Industrial X ray complete series products from beginning of 1988. built our own X ray tube production line for years, use our own tube on all X ray products. based on complete strict testing in our own lab before delivery to all customer, we get very good feedback and professional leading position. X Ray Tube,X Ray Tube Parts,Tube X Ray,Modern X Ray Tube Dandong Nondestructive Testing Equipment Co., Ltd. , https://www.ddchinaxray.com