After the pond is turned into the pool, the fish should be transferred to the new pond in time for breeding and rejuvenation. If the water supply is insufficient, the fish ponds will be difficult to turn around, and all the fish in the old pool will be transferred out of temporary storage. The original pool will replace more than half of the old water, and use 20 to 30 kg of lime water per acre of water to take the clear liquid and disinfect the whole pool. After 5 to 7 days, add new water and then return the fish.
Dividing and raising rare species of fish are divided into different groups according to different specifications. In general, fish species with a body length of more than 15 centimeters can be put into a fish pond culture, and smaller fish species can be cultivated in a special pool, so as to be consistent with the specifications of the fish species stocked in the pool. For ponds with a depth of 1.5 meters, 5,000 species of fish within 10 centimeters per mu are used. The main species of carp fish can be used with 30% grass carp; the main species of grass carp can be used with 30% carp.
For fertilizing the main grass-raising fish species, with the ponds of squid species, 80 kg of fresh green grass is normally fed per 10,000 times per day, and 2 kg of bean cake, cornmeal, and bran are concentrated. First cast green material, and then cast fine material. In addition to properly increasing the amount of concentrate feed, the main pond for raising puffer fish should also be given organic fertilizer in time. Fertilization is best carried out on a sunny day. Generally, organic fertilizer is applied once every 1 week. Each time, the amount of manure and livestock manure is 50-60 kilograms per mu, and every 2 to 3 days, once or every 3 to 5 kilograms of nitrogen and phosphorus are applied. The ratio of potassium to potassium is 1:1:0.5, and the fertilizer is completely opened before splashing.
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