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1、生物增氧法:在冰封前有意识地注入部分含浮游生物多的肥水,用于引种,但注水量不要超过池水的五分之一。如越冬池水质清瘦,每亩施尿素和过磷酸钙备0.5—1kg,但不要用有机肥,以防污染水质。2、充气补氧法:利用风车或气泵将空气压入放于冰下水中
1, bio-aerobic method: consciously injected before the freezing part of the plankton containing more fertilizer for introduction, but the amount of water injection should not exceed one-fifth of the pool of water. Such as overwintering pool water quality lean, per acre urea and superphosphate prepared 0.5-1kg, but do not use organic fertilizer to prevent pollution of water quality. 2, inflatable oxygen method: the use of windmill or air pump into the air pressure into the water under the ice