Cas 183208-35-7,Vemurafenib Intermediates,5-Bromo-7-Azaindole Shijiazhuang Dingmin pharmaceutical Sciences Co.,Ltd , http://www.dingminpharma.com
1. Disinfect the clear ponds: In the first month before the fry stocking, the bottom of the drainage and exposure pool shall be drained. The lime shall be 150 kg of lime, and then the water shall be drained into the pond so that the water depth reaches 50-60 cm. When the water is drained, it shall be filtered with a filter. In order to prevent harmful substances from entering fish ponds and infecting fry; Water depth 10-30 cm, 60-80 kg of mu with quicklime, fish ponds with a depth of about 1 meter, and 120-150 kg of quick lime for disinfection. This will effectively kill harmful insects, green mud moss, shallow root aquatic plants and pathogenic bacteria. Lime usually disappears about 10 days.
Second, put a good fish into the customs: the spring to put the best fry size, when the fish returned to use 1 kg of baking soda, 1 kg of salt, water, 50 kg mixed disinfection to kill the body surface and the Pathogens, and then put the water in the fish pond into the fry container, so that the fry adapt to the water in the fish pond, and then put it into a 50-60 cm fish pond one day later.
Third, put a good fertilization feeding off: Feeding turtles, fish ponds and other fertilized fish ponds, in the 10 days before the release of fry, when the water temperature reaches 5 °C above, mu water surface Fermented for excrement 50-100 kg 150-250 kilograms of livestock and poultry excrement to cultivate plankton, so that the fish can eat enough natural food under the pond.
Fish ponds for feeding grasses, quails and other food-eating fish will begin to eat when the water temperature rises by about 10°C, feeding mainly water-grasses, and feeding some malt, bean sprouts, etc., properly, and then changing the amount of food to be eaten before changing. With bean cake, bran and other feed, each feeding should be given a fixed time. The daily amount of general concentrates may be 3-5 kg ​​per hundred kilograms of fish, and the standard for feeding the forage should be within 4 hours.
4. Put a good water injection: early spring, the water temperature is low, the fish body is smaller, the water of the fish ponds should not be filled once, and the water level should be gradually increased as the feeding and fertilization and the growth of the fry and the weather are changed. Generally, the water is injected once every half month. Adding 10-15 cm times, the general water level in April-May can be controlled at about 80-100 cm.
Spring fish pond management puts “four customsâ€
The management of fish ponds in spring has a direct impact on the survival of fish fry and the growth of adult fish this year. To ensure the stability and high yield of pond fish, the following “four levels†should be managed.