A Knee Support comprising a main body for covering the knee joint and thigh and shank portions of a leg located above and below the knee joint, two straps respectively disposed extending laterally above and below the portion of the main body which corresponds to the patella, one end of each strap fixed to the main body while the free ends thereof are adapted to be detachably attached to the main body, and a patella pad fixed to the two straps so as to be brought into contact with a side portion of the patella when the support is mounted on a knee. Knee Support Elastic Knee Support,Knee Support,Knee Support Arthritis,Knee Brace Neoprene Chengdu Cryo-Push Medical Technology Co., Ltd. , https://www.cryopush.com
Pond ponds require 3 to 10 acres of ponds to be cultivated. The depth of water is 1.5 to 2 meters. The bottom of the pond is required to be flat and the drainage is convenient. Every 30 mu water surface is equipped with a 3.5-kilowatt aerator and a bait feeder.
Preparation Before the end of April, Senecio cannabinata is planted in the whole pond as a natural feed for grass carp while entering the pond, and it can absorb excess organic matter in the sludge. In the 20 days before Xiahua Down Pond, 100 kg of quick lime is used to clear the pond completely. Xiahua Xiatang 7 to 10 days before, per acre Shi organic fertilizer 200 kg. At the same time, fill the pool with water to keep the water depth at about 0.5 meters.
The summer flower stocking is 4,000 to 5,000 per mu, and 1,000 white flowers and summer flowers. Xiahuaxiatang can gradually deepen the water level until submergence of Xiaomichao in accordance with the growth of fish body in late July.
The feed was fed with the feeding method of "feeding early and feeding later". Before July, the main feed was green feed, with some formulated feeds; from July onwards, the fish entered a fast-growing period, mainly fed granular formula feed, fed 2 to 3 times a day, and the amount of feed in the morning accounted for all-day feeding. 70% of the total.
Diseases Common diseases of grass carp are mainly enteritis, gill disease and Chinese fish carp disease. From the beginning of June, new water will be poured every 10 days or so, each time adding 20 to 25 centimeters of water. After July, every 20 days, the depth of 1 meter of water per acre will be splashed once with 15 to 20 kg of calcined water. If a Chinese squid is found, each cubic metre of water shall be sprayed with 0.7 gram of copper sulphate ferrous sulphate mixture (5?2) and used once every other week.
Through cultivation, more than 400 kilograms of large-scale grass carp species can be harvested from 100 to 250 grams per mu.
In addition, the cultivation of grass carp summer flowers in crab ponds is one of the main models for raising the efficiency of crab breeding in recent years, and it is also the main method for the cultivation of large-scale grass fingerlings in recent years. After August each year, there are too many aquatic plants in crab ponds, affecting the normal growth of crabs. In mid-August, 300 to 400 summer fish were planted per acre, which can control the amount of aquatic plants in crab ponds and cultivate some fish species. In general, about 25 kilograms of large-scale grass carp species can be obtained from 100 to 250 grams per mu.
Large-scale grass fingerling breeding technology
In recent years, with the continuous development of the grass carp processing industry, the demand for grass carp is increasing day by day. To cultivate good grass carp, we must first prepare high-quality grass carp species. Now we introduce large-scale grass carp species cultivation techniques as follows.