经过多年养鱼的池塘,由于肥料和饵料残渣、鱼类粪便、泥沙杂质日积月累,加之风雨、水流侵蚀塘埂,使塘中积存大量淤泥和腐殖质,多种致病细菌和敌害生物大量繁殖而引起鱼塘老化,如不及时改造,会直接影响第二年养鱼产量。现将改造方法介绍如下。 一、寒冬晒塘 把塘水放干,利用立冬至立春这段季节,由于日夜温差大,温度最低,潜伏塘底的有 After many years of fish ponds, due to fertilizer and bait residue, fish feces, sediment impurities over time, combined with wind and rain, water erosion ponds, so that the accumulation of large ponds and humus pond, a variety of pathogenic bacteria and predators multiply Which will lead to the aging of fish ponds. If they are not renovated in time, they will directly affect the fish production in the next year. The transformation method is introduced below. First, the winter sun pond to drain the water, the use of legislation until the beginning of winter this season, due to large temperature difference between day and night, the temperature is the lowest, there are latent pond