2, Qingtang fertilizer: 10-15 days before the loach stocking, with 75 kilograms of lime dry ponds per acre pond. After 7 days, fresh water is injected into the clear pond. After entering the water, 75 kg of chicken manure per acre was used as a base fertilizer to cultivate plankton, which was fed to the loach ponds for feeding. The transparency of the pool water is controlled at about 20 cm, and the water is yellow-green.
3. Seed stocking: After 1 month in mid-June, put enough seedlings to plant 1500 kg per acre. Seedlings are purchased from the market and are of varying sizes, about 160/kg.
4. Feed feeding: From late June to early August, the proportion of 3-4% of the loach's body weight will be fed into the expanded pellet feed each day. Feed 2 times a day, feed it once every 5 o'clock and 10 o'clock at night. Sometimes, according to the amount of loach eaten, it is judged to increase feeding once at 3am. The first feeding amount was 2% of the loach's body weight, and the second and third feeding amount was 1% of the loach's body weight. From late August to late September, feed 2% of the loach's body weight twice a day. When the temperature is below 15°C, they are fed twice a day and each time they are fed at 0.5% of the loach's body weight.
5, water quality control: pool water transparency control in 30 cm, dissolved oxygen content of 3.5 mg / l or more, the pH value of 7.6-8.8. When the temperature is 33-37°C, change the water from 10.00 am to 3 pm; in spring and autumn, change the water according to 1/2 of the water volume; change the water every morning at 6 o'clock and change the water at 10 o'clock in the morning. . Every 20 days, every cubic meter of water body is splashed with 20 grams of quicklime pulp, and once every 15 days, bleaching powder is used to disinfect the food field once.
6, from the catch: Mud catch time before and after October, with a cage to capture, most of the mud from the capture of catching water capture.
ETR Oxygen Cylinder Filling System
By PSA principles, ETR PSA oxygen generators generate 93%±2% purity oxygen gas directly from compressed air. ETR oxygen cylinder filling plant is consisted of Atlas Copco air compressor, Parker dryer and filters, air buffer tank, ETR Psa Oxygen Generator, oxygen buffer tank, oxygen receiver tank, diaphragm oxygen booster, filling station and control cabinet.
Compressed air is purified through the air dryer and filters to a certain level for main generator to work with. Air buffer is incorporated for smooth supply of compressed air thus to reduce fluctuation of compressed air source. The generator produces oxygen with PSA (pressure swing adsorption) technology, which is a time proven oxygen generation method. Oxygen of desired purity at 93%±2% is delivered to oxygen buffer tank for smooth supply of product gas. Oxygen in buffer tank is maintained at 4bar pressure, then reach to 150bar to filling cylinders with an oxygen booster.
Oxygen Cylinder Filling System
Oxygen Cylinder Filling System,Homefill Oxygen System,Oxygen Refilling Plant,Oxygen Refilling Station
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