At ancient times, people picked up wild fruits, and they found the magic of Goji , The pictograph word "qi" in Chinese character just like a man knelt down at a Goji tree , the left of the character "qi" seems like a tree, and the right like a person bowed down. That means as early as four thousand years ago, people found that Goji can keep fit and role of longevity ,Goji has magic power to people`s life.
Goji Berry,Organic Goji Berry,Dried Goji Berries,Fresh Goji Berry Ningxiahong Goji Industry Group Company Limited , https://www.ningxiahonggroup.com
1. Selection of fish and shrimp polyculture pools Polyculture of fish and shrimps is usually carried out in fish ponds and mixed with fish species. The area of ​​ponds should not be too large, with 3-5 acres being preferred. It is required that the bottom of the pool be flat, there should be less sludge, be close to the water source, be convenient for water intake and drainage, have a quiet environment and have good ecological conditions. In the case of fish and shrimp polyculture ponds, it is better to avoid the use of raw stone mason in clear ponds, and it is better to use crotons or samovars.
2. Fish suitable for polyculture The polyculture of fish and shrimp requires that carnivorous fish and benthic organisms such as squid and squid should not be selected so that these fish do not swallow green prawns. During the larval stage of planktonic life in the green prawns, they cannot be polycultured with carp that feed on zooplankton to avoid being swallowed. In addition, freshwater shrimp need to use aquatic plants as habitats and hiding places. Therefore, they cannot be mixed with herbivorous fish such as grass carp and carp. Normally, the larvae of green prawns are metamorphosed and they grow into small prawns before they are put into the pupae and carp species, and fish and prawns are polycultured.
In summary, the mixed culturing of green prawns and filter-feeding rations is better, and it is best to be mixed with white mullet species, and it is not possible to polyculture with pelican, pupa, pelican, puffer fish, and even not mixed with carnivorous fish. Raising, this is the key to doing a good job of fish and shrimp polyculture.
3. Polyculture ratio and density Polyculture of ponds and fish ponds requires clearing of fish ponds from May to June, 500-800 tails of female eggs per acre, or 5000-8000 of juveniles with a specification of 2000-5000 birds/kg. Only; in mid-July, put 7000-8000 tails in summer. Cage fish and shrimp polyculture, in late June, 2,000 to 4,000 females will be released per mu, or 3,000 to 4,000 juveniles of 1500 to 3,000 will be placed per acre in early July, and then placed in cages per acre. Bai Xia Xia spent 80,000 - 120,000.
4. Feeding management and management measures can refer to the pond (cage) shrimp. However, it is worth noting that the nets for fish and shrimp polyculture should not be larger than 24 mesh per square centimeter to prevent shrimp from fleeing the shrimp; net cages with too dense meshes should not be used. Otherwise, the water at the net will be poor and the mesh will be blocked. , water quality is prone to deterioration. Pond polyculture also pay attention to anti-floating head. Clear the wild fish once a month. In the clearing operation, the trout should not be injured. It is best to catch fish for treatment of fish diseases, and to be aware of the safety of the shrimp when preventing fish diseases in the original pool (box) to prevent the fish from dying. Mixed ponds (boxes) holding eggs must be caught before winter mid-July.
Green shrimp fish and shrimp polyculture technical points
Green prawns are benthic crustaceans. They have poor swimming ability and often crawl between plants or the bottom of water. Therefore, they can be both monocultured and polycultured with some fish. The polyculture of fish and shrimp can not only make full use of water, but also can achieve the purpose of double harvesting of fish and shrimp without increasing feed or affecting the growth of fish species. It is a good breeding method.