Rejuvenated weak fish species in autumn
For fish species with weaker constitution due to summer heat, water quality aging and poor feeding and management, etc., we should take advantage of the more suitable autumn climate to rejuvenate in time. This will facilitate the wintering of fish species and increase the output in the coming year. 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. Lime 20 kg to 30 kg of water will be used per acre of water to take the clear liquid and disinfect the whole pool. , After 5 days to 7 days, add new water, and then turn the fish back. 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. At the same time, it is necessary to reduce the density of the fish and reasonably match the fish species. For ponds with a depth of 1.5 meters, there are 5000 species of fish within 10 centimeters per acre. The end of the pond is generally about 15 centimeters long. 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. Among them, the ratio of eel and eel is 5:1. 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 performed on a sunny day. Generally, organic fertilizer is applied once every 1 week. Each time, 50 kg to 60 kg of man-fag excrement per acre is applied. Once every 2 days to 3 days, chemical fertilizer is applied once, and each time 3 kg to 5 kg. The ratio of nitrogen, phosphorus, and potassium is 1:1:0.5, and the fertilizer is completely opened before splashing. Disposable Gynecological Examination
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