1. Pond culture: Generally, loach is cultured in cement ponds or concrete ponds with a depth of 70- 100 cm and a water depth of 50-60 cm. The bottom of the pond is covered with 15-20 cm thick silt, and the pond area can be large or small, preferably 2-3 mu. The pond should be convenient for irrigation and drainage, and the entrance and exit should be protected by barbed wire. Before stocking, the pond should be cleaned and disinfected, and the method and dosage are the same as those of the fry pond.
2. Pond polyculture refers to polyculture with other fish. Such as mixed culture with silver carp, bighead carp, carp, grass carp and bream. This kind of culture is the same as pond culture in pond selection, pond cleaning, disinfection and stocking.
The advantage of polyculture is that you don't need to feed more bait to loach, just feed other fish. The food source of loach is bait that fish can't eat and feces discharged. Therefore, this farming method has high benefit and great water resources utilization value, which is worth popularizing.
There is a large paddy field in the south of China. Using paddy field to raise loach can not only save water surface, but also get food, which has remarkable economic benefits and is a good breeding model for efficient agriculture.
3. 1, rice field selection. The paddy field with loach has good acidity, less sediment and good water retention, and will not overflow when it rains. Ridges should be built around rice fields. Two nets should be set at the entrance and exit to prevent loach from escaping.
3.2, stocking and management. Transplanting live seedlings of early rice or middle rice, and then releasing the seedlings. Generally, 40,000-50,000 tails are stocked per mu. Before putting loach, organic fertilizer should also be applied topdressing to cultivate zooplankton in the water.
3.3, raising loach rice fields should try to apply less pesticides or no pesticides. Even if it needs to be used in case, it should be administered in batches, with the nozzle facing upwards, and the liquid medicine should not be sprayed on the water surface. Besides, don't use herbicides. When planting double-cropping late rice, it is best to adopt no-tillage method to avoid mechanical damage to loach.
4. Pond culture.
This farming method is to raise loach in a small fat water pit in front of and behind the house. The area of the pit can be large or small, ranging from a dozen square meters to forty or fifty square meters. Generally, conventional fish will die of lack of oxygen because of too much organic matter and insufficient dissolved oxygen in this pit. Misgurnus anguillicaudatus grows well in this pit because of its special respiratory organs.
Knife loach fish, slender body, slightly flat front end, flat and thin back anus. The head is long and pointed. The kiss is longer, but not as long as the back of the eye. The tip of the snout protrudes forward into a snout, the length of which is about equal to the diameter of the eye. The front nostril is tubular and located on both sides of the kiss; The back nostril is round, near the front edge.
The eyes are located above the head, the surface is covered with thin skin, and there is a barb in front of the eyes, which is buried in the skin. The mouth is low, the mouth splits into a triangle, and the corner of the mouth reaches or slightly exceeds the front edge. There are villous teeth in the upper and lower jaws, which are arranged in bands. The pectoral fin is small and round, without ventral fin, and the dorsal fin and anal fin are connected with the caudal fin respectively. There are 1 row of independent hard spines in front of dorsal fin, about 31-33; There are 3 spines on the gluteal fin; The caudal fin is slightly pointed. The body proportion is small and the lateral line is not significant. The back is yellowish brown and the abdomen is yellowish.
There are two light-colored lines on the head starting from the back of the eye and extending longitudinally along the back of the body to the base of the caudal fin. There are many reticular patterns on the back and ventral side of the body, especially at the base of dorsal fin, gluteal fin and caudal fin, and there are more than 30 brown vertical stripes on the side of the body. In some individuals, the upper ends of stripes are dark black, and in some individuals, short stripes are mixed between stripes near the abdomen. The base of backstab is dark brown, the pectoral fin is light yellow or grayish yellow, the other fins are gray, and the lower edge of the gluteal fin is often decorated with white edges.