Well-known aquaculture safe winter
2018-06-29 18:02:01
1 Green shrimp: It is mainly wintering of larvae and broodstock. Choose a pond that is sheltered from the sun, has a water depth of 1.5 meters or more, and has a lot of aquatic plants as a wintering pond. Water-free grass ponds should generally be able to put 150-200 kg of water plants or 25-35 kg of poplar branches. The wintering density is 20-40 kg/mu for juveniles with a specification of 2000-3000/kg and 15-25 kg/mu for 140-300/kg. In the sunny and warm weather during the winter, feed the feed once every 7-10 days, each time 1-2kg per mu, the feed requirements are small and fine.
2 squid: should choose leeward sunny, an area of ​​1-3 acres, the depth of 2 meters above the fish pond for the winter pool. When the water temperature drops to 10°C, choose a sunny day and pond overwintering, and raise 3000-5000 squid species with a specification of 10-15 cm per mu. Gradually control the amount of fish in the pond before half a month.
3 Hesui: When the water temperature is low, it is necessary to prevent freezing damage to the carcass, deepen the water level, or sink the plutonium into the deep water layer, but it cannot touch the bottom of the pool. To maintain proper body fat. In case of freezing cold, it is necessary to crush the ice on the surface of the water to prevent oxygen deficiency in the water body.
4 Muddy: Choose a pond with a strong leeward and strong water retention capacity. After 20 g of calcined pulp is used per cubic meter of water, the whole pool will be disinfected. At the bottom of the cement pool, 20 cm thick silt should be laid to facilitate the wintering of mud mud. Pool water maintains 1-1.5 meters. The four corners of ponds pile up some organic fertilizer such as pig dung and manure, which can be used as fertilizer and water, and the water temperature can be increased due to the heat released by fermentation.
5 Astragalus: dry pool winter, when the temperature dropped to 10 °C, the pool water can be drained, covering a small amount of straw or turf, keep the pond mud moist and warm (above 0 °C), while preventing rats, cats harm. If water is allowed to pass through the winter, the water layer should not be too shallow to prevent icing at the bottom.
2 squid: should choose leeward sunny, an area of ​​1-3 acres, the depth of 2 meters above the fish pond for the winter pool. When the water temperature drops to 10°C, choose a sunny day and pond overwintering, and raise 3000-5000 squid species with a specification of 10-15 cm per mu. Gradually control the amount of fish in the pond before half a month.
3 Hesui: When the water temperature is low, it is necessary to prevent freezing damage to the carcass, deepen the water level, or sink the plutonium into the deep water layer, but it cannot touch the bottom of the pool. To maintain proper body fat. In case of freezing cold, it is necessary to crush the ice on the surface of the water to prevent oxygen deficiency in the water body.
4 Muddy: Choose a pond with a strong leeward and strong water retention capacity. After 20 g of calcined pulp is used per cubic meter of water, the whole pool will be disinfected. At the bottom of the cement pool, 20 cm thick silt should be laid to facilitate the wintering of mud mud. Pool water maintains 1-1.5 meters. The four corners of ponds pile up some organic fertilizer such as pig dung and manure, which can be used as fertilizer and water, and the water temperature can be increased due to the heat released by fermentation.
5 Astragalus: dry pool winter, when the temperature dropped to 10 °C, the pool water can be drained, covering a small amount of straw or turf, keep the pond mud moist and warm (above 0 °C), while preventing rats, cats harm. If water is allowed to pass through the winter, the water layer should not be too shallow to prevent icing at the bottom.
Pukang Medical Instruments Co., Ltd. , http://www.xs-medicalbeds.com