Rice field fish rearing technology
Ultrasonic Cavitation+RF Series Body Slimming,Radio Frequency,Salon Equipment Xiqi Xinhuan Technology Co., Ltd. , http://www.sz-tattoo.com
I. Variety Selection There are many weeds and benthic fauna in paddy fields, but there are few plankton, so fish in paddy fields is mainly used for the stocking of grass carp, carp, carp, non-cockroach, leather beard and other food-eating fishes. fish. When feeding food fish, 40-50% of grass carp, 20-30% of carp, 20-30% of carp, or 60-80% of carp, grass carp, non-cockroach and carp, 20-40% of carp support. In the rice paddyfish integrated breeding system, the main breeding non-fungus effect is the best. The best single-fish breeding, if polyculture, 3-5 species is appropriate, so as to avoid excessive fish species, and juvenile fish phase similar food and competitive. In the adult stage, different types of fish have different feeding habits, and multiple varieties of polyculture can make full use of feed resources. Second, the species size and stocking density (A) stocking specifications The stocking specifications and the purpose of breeding: If the fish species, then the fry of summer fish fry, such as the use of Putian, early rice paddy cultivated grass carp or trout species, can also be attached to the eggs of salmon The fish nest is directly placed in the blister hatching; if it is a large-sized fish species, fish species of 3.3-5 cm or more can be stocked; if the food fish is cultured, large-scale species of 16-25 cm in length should be stocked, such as Sichuan Province. In Nanchang City, Shunqing District, Nanchong District, fish reared in paddy field requires 50-150 grams of rearing carp tails and 150-250 grams of grass carp tails. (II) Stocking Density The stocking density is related to the size of the fish species, the area of ​​the ditch and the rice cultivation method. When the ditch has a large area, the density can be larger. When the size of the fish species is large, the amount should be less. Third, stocking time and pre-stocking treatment (A) stocking time Rice paddy fish release time depends on stocking specifications and types. When cultivating fingerlings, put the fish in the paddy field of Putian and transplant the fish in the rice field and put the fish in the fishbone. After stocking about 7 cm in size, you need to raise the seedlings after returning green to prevent the fish from swallowing the seedlings. The grass seedlings of the next year must be eaten in the field after the rice round culm and effective tillering are completed. At present, many areas of rice paddy fish to extend the growth period of the fish, as early as before transplanting, the fish or fish have been put into the fish slippery fish, after the seedlings return to green deepen the water level, get through the fish ditch fish way, put the fish into the field. In the case of polyculture of rice paddies and fishes, whether or not the fish is released at the same time or in batches is limited by the number of natural foods, which is usually a one-off investment or a round-rotation method. For example, when the single-season rice field fishes are harvested for an annual period, the plankton grows after the rice is harvested. At this time, it is necessary to increase the number of salmon species to fully utilize the feed resources. (b) 10-15 days before the release of fish before stocking, the fish gills and gutters shall be disinfected with quicklime, and the method shall be the same as Pond Clear Pond. Fish fry species are soaked with 2-4% salt water for 3-5 minutes before stocking, and 8ppm copper sulfate, or 10ppm bleach, or 20ppm potassium permanganate may be used to soak the fish. When the fish species are large and the water temperature is low, the soaking time is long, and vice versa, the soaking can prevent a variety of fish diseases. Excerpted from: The Fish Book