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What do spring fish catch?
Practice has shown that early spring fish fingerlings can not only encourage fish to open food in advance, extend the growth period, and increase yield. Moreover, due to the low temperature in early spring and less fry activity, it is not easy to be injured during fishing, transportation and delivery, and the survival rate of fry is high. high. Generally it is appropriate to put it in February to April. In the specific operation, attention should be paid to the following points: First, we must first make good preparations such as artificial propagation equipment, commonly used drugs, fish farming machinery and tools, and fertilizers and baits. Can not be from the breeding of fishery fish farmers and fish farmers, but also should choose a good breeding unit for the fish in order to buy back high-quality fry as soon as possible, but also should do a good job pond clearing, disinfection and other work. Second, do a good job of fry, fingerling input According to the local food and water quality conditions, determine the main species. If there is rich grass, it is advisable to raise grass and squid. If the source of fertilizers is sufficient, they can raise squid, squid, white mullet, and tilapia. In regions where there are many snails and oysters, bluefish and squid can be raised. The amount of stocking depends on the conditions of the pond and the level of feeding and management. Intensive culture of fish ponds generally put 1,500 to 2,000 tails per acre, and rough fish ponds have 500 to 1,000 tails per acre. In order to increase the yield per unit area, a rational polyculture of multi-species and multi-species fish species should be implemented, and the fish should be disinfected before stocking. Third, do a good job of broodstock cultivation Spring is a key stage of gonad gonad development, timely early broodstock is very important. First, we must do a good job of water quality management. The brooding pond should be filled with water in a timely manner. After 3 months, the carp and carp ponds should be filled every 10 days to 15 days. The black carp and grass carp pool should be filled every 2 to 3 days. Secondly, we must grasp the feeding of bait, and in the early stage we should feed a certain amount of grain malt, soybean cake and other feeds to promote gonad development of broodstock. In the middle and late stage, grass carp should be fed with ryegrass and grasses, and carp and carp should be Feeding cakes, bran-based. Herring is mainly fed with fresh snails and clams. Fourth, pay attention to fertilization and feeding fish species should be enough to apply base fertilizer before stocking, 1 mu manure 250 kg to 300 kg. When topdressing, the amount of early spring is less and less, and in late spring it should be less and less. Keep the water brown or reddish brown with a transparency of about 30 cm. Fifth, do a good job of controlling fish diseases Common spring fish diseases include water mildew, gill disease, and small melon worm disease. Fish diseases should be prevented early. Every 1 month or so, 1mg/L bleaching powder and 0.2mg/L to 0.4mg/L crystal trichlorfon should be splashed to the fishpond. Found fish diseases, timely diagnosis, symptomatic treatment.