First, the United States frog
( (1) èŒèšª: èŒèšª è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€. Fertilize the water, put some baits properly, and put the alfalfa into the house to safely pass the winter. The survival rate can reach 90%.
(2) The frogs with tails have occurred before and after the forelimb, but the tail has not yet disappeared. The unfinished young frogs have weak resistance to cold and bad environment. Mortality is often as high as 50% or more after winter or spring and requires special protection. 1 In the beginning of spring, the wintering protection law was adopted and rice straw, plastic films, and other cold objects were covered in the pool. 2 The indoor pool is built. The depth of the pool is more than 1 meter. Indoor heating equipment is added to keep the water at 0-5°C.
(3) The temperature of frogs and adult frogs drops below 5°C. The frogs begin to hibernate. They can use two methods to get through the winter: 1 pool water overwinter, choose leeward sunny pool, the bottom of the pool must have silt of 20-30 cm, in order to benefit the frog Drilling into the mud for winter; 2 land overwintering method. Dig loose soil around the frog ponds, or dig a few holes that are 13-15 cm in diameter (not too large) and 1 meter deep. The caves should be kept moist, but the pool water should not inundate the caves. A layer of thicker layers should be covered outside the caves. The soft weeds. Beautiful frogs will safely overwinter in cluster loose soil or in caves. During hibernation, care should be taken to prevent rats, snakes and cats from harming the frogs.
Second, Chinese sturgeon
(1) In the two lake areas, the juvenile clams have a wintering mortality rate as high as 50% to 60%, and must be protected by artificial wintering. It mainly uses indoor cultivation ponds for deep winter or shallow water for winter. In deep water, it is necessary to drain the pool water first. The bottom of the pond should be 20-30 cm thick, add 5-10 cm of water, and then place 100-150 pieces of freshwater per cubic meter. When the water temperature drops below 10°C, the baby will automatically stick to the sand and hibernate. Then fill the pool. In order to control the room temperature above 0°C, a straw curtain can be placed on the top of the pool, and then a 20 cm thick straw insulation is placed on the curtain. In winter, in shallow water, in addition to laying sand in the bottom of the pool, 30-40 cm of straw must be laid to allow the young plants to drill into the straw at the end of winter. When the water temperature rises to 18°C ​​in April of the second year, discharge the pool water and leave only 5-10 cm of water, or remove the straw, and then inject 5-10 cm of fresh water.
?? (2) larvae and adult pupa, wintering should be carried out in accordance with the size of the specification, indoor overwintering can refer to the wintering protection measures. Unconditional wintering in outdoor open-air pools. Open-air ponds should be selected where the leeward sun is sunny and the environment is quiet. The sediment in the pool should be more than 30 cm, and then 20-50 should be set aside to deepen the water level so that the water depth under the ice can be kept at least 1 meter. The pool is covered with plastic film and the effect is better.
( (1) èŒèšª: èŒèšª è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€ è€. Fertilize the water, put some baits properly, and put the alfalfa into the house to safely pass the winter. The survival rate can reach 90%.
(2) The frogs with tails have occurred before and after the forelimb, but the tail has not yet disappeared. The unfinished young frogs have weak resistance to cold and bad environment. Mortality is often as high as 50% or more after winter or spring and requires special protection. 1 In the beginning of spring, the wintering protection law was adopted and rice straw, plastic films, and other cold objects were covered in the pool. 2 The indoor pool is built. The depth of the pool is more than 1 meter. Indoor heating equipment is added to keep the water at 0-5°C.
(3) The temperature of frogs and adult frogs drops below 5°C. The frogs begin to hibernate. They can use two methods to get through the winter: 1 pool water overwinter, choose leeward sunny pool, the bottom of the pool must have silt of 20-30 cm, in order to benefit the frog Drilling into the mud for winter; 2 land overwintering method. Dig loose soil around the frog ponds, or dig a few holes that are 13-15 cm in diameter (not too large) and 1 meter deep. The caves should be kept moist, but the pool water should not inundate the caves. A layer of thicker layers should be covered outside the caves. The soft weeds. Beautiful frogs will safely overwinter in cluster loose soil or in caves. During hibernation, care should be taken to prevent rats, snakes and cats from harming the frogs.
Second, Chinese sturgeon
(1) In the two lake areas, the juvenile clams have a wintering mortality rate as high as 50% to 60%, and must be protected by artificial wintering. It mainly uses indoor cultivation ponds for deep winter or shallow water for winter. In deep water, it is necessary to drain the pool water first. The bottom of the pond should be 20-30 cm thick, add 5-10 cm of water, and then place 100-150 pieces of freshwater per cubic meter. When the water temperature drops below 10°C, the baby will automatically stick to the sand and hibernate. Then fill the pool. In order to control the room temperature above 0°C, a straw curtain can be placed on the top of the pool, and then a 20 cm thick straw insulation is placed on the curtain. In winter, in shallow water, in addition to laying sand in the bottom of the pool, 30-40 cm of straw must be laid to allow the young plants to drill into the straw at the end of winter. When the water temperature rises to 18°C ​​in April of the second year, discharge the pool water and leave only 5-10 cm of water, or remove the straw, and then inject 5-10 cm of fresh water.
?? (2) larvae and adult pupa, wintering should be carried out in accordance with the size of the specification, indoor overwintering can refer to the wintering protection measures. Unconditional wintering in outdoor open-air pools. Open-air ponds should be selected where the leeward sun is sunny and the environment is quiet. The sediment in the pool should be more than 30 cm, and then 20-50 should be set aside to deepen the water level so that the water depth under the ice can be kept at least 1 meter. The pool is covered with plastic film and the effect is better.
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