Pit pits are also called potholes and are widely distributed in rural areas and suburbs. Where the village, before the house, behind the house, the Tanabe, the road side, the shallow water on both sides of the channel are called pit ponds, can be used to raise fish. The advantages of using it to fish are: 1 small capacity, low water consumption, easy to solve the water source; 2 dry pond is easy, clear and convenient, easy to raise, easy to catch, without special tools and equipment; 3 can be organically combined with agriculture and animal husbandry, Bait, fertilizer, and labor are all easy to solve; 4 flexible production, fish farming, nursery, breeding are appropriate. The technical measures are as follows. 1. The clearing of pit ponds is to communicate with water sources and divert water through canals or culverts; pools are neat, long, and square; simple drainage pipes are used to lay the terrain; the bottom of the pool is leveled and dumped toward the drainage side; Or apply triple soil to prevent leakage. Disinfect with lime before putting fish. 2. Fish breeding 1 pairs of water resources, can live water, semi-fluid water ponds, stocking grass carp, carp, stocking more than 17 cm per square meter fish species 15-20. 2 For potholes that are supplemented by water, but not abundant, they should be mainly squid and squid, with grass and squid. Every 66.7 square meters of water can be put 3-10 centimeters squid 80 to 100 tail, carp 8 to 10, with 13-17 cm grass carp 10 to 15 tail, 3 cm carp 3 to 5 tail. 3 The "Tianshui" and stagnant ponds with insufficient water supply and water supply are mainly used for carp, catfish, and tilapia. They have lax choices for water, can live in poor water, are resistant to hypoxia and are suitable for stocking in stagnant ponds. Because the food habits of the three are basically the same, it is generally advisable to adopt monoculture. Every 66.7 square meters of water is stocked with 30 centimetres of 3 centimetres of carp, or 1 to 1.5 kilograms of carp, or about 2000 tilapia. 4 If fish ponds can be used in combination with mountain ponds and paddy fishes, they can adopt the series of pond ponds, rice field breeding, and mountain ponds to raise fish, so that food, pigs, fish, and vegetables can promote each other to improve Soil and water productivity (appropriate for stocking from December to February). 3. Feeding and management 1 The main stream of raising grass and squid, semi-fluid-type ponds, grass carp to feed fresh grass, leaves or leeches; squid to fine material with a small amount of leaves made of paste, granular feed for Lord, or feeding vinasse, bean dregs, cooked sweet potatoes, potatoes. In addition, it is also possible to feed some protein foods with high animal nutrition, such as snails, lanterns, and eel. Pits and ponds, which mainly include raising oysters and squid, should be mainly decomposed manure, and they should be fed with grasses and leaves to feed grass carp. 2 The ponds and ponds with difficult water sources should be mainly fed with concentrated feed, with a small amount of fertilization. Like fish in ponds, feeding and supplying fertilizers must adhere to less quantity, “four lookâ€, and “four setsâ€. Pay attention to leakage, regular water injection, keep the water quality in the color and transparency of fertilizer. Prevent the harm of pesticide water, birds and animals, and fish diseases. Play the advantages of pit ponds catching, catch large and small or make up small, adjust density, and promote growth.
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