The use of fishpond ponds to mix and treat cockroaches and shrimps without affecting fish farming can not only increase the utilization rate of ponds and the quality of commercial fish, shrimp and alfalfa, but also greatly increase the economic benefits of pond culture. The polyculture of fish, shrimp, and oyster ponds is now described as follows: Creating ponds Eco-environment Ponds should be chosen in a quiet environment, with sunny leewards, convenient drainage, good water quality, an area of ​​3-5 mu, a water depth of 1.5-2 meters, silt Less ponds. Anti-escape facilities The anti-escape and containment facilities above 30 cm in height must be installed around the pond. The facilities can be made of masonry, or they can be built with asbestos tiles or plastic plates. Corners and joints should be flat and seamless. The feed station and the drying station set a feed station about one meter away from the pond, and a "basket back" (arch type hairy bamboo frame) was set up in the pool. Cultivated water is first disinfected with fresh lime ponds, then injected into 50-60 cm deep water, and 100-150 kg of fermented organic fertilizer is applied per acre to cultivate plankton. Transplanted aquatic plants move people into a circle of water peanuts or water spinach in the shallow water of fish ponds, covering 20-25% of the water surface. Pay attention to the fact that the water must be disinfected with bleaching powder or chlorine dioxide before moving in, so as not to bring pathogens and parasites into the pool. Equipped with aerators Due to the high density of culture in the ecological three-dimensional aquaculture ponds, in order to improve water quality and prevent fish and shrimp from floating, it is necessary to provide 1-2 aerators for timely oxygenation. The stocking of reasonable stocked fingerlings is mainly white peony, which accounts for 70-80%. It is appropriate to breed grasses, oysters and bonito species. Generally, 200-250 tails are put in mu, and the stocking time is before and after the Spring Festival. The stocking of shrimp species should be stocked with eggs or shrimp. Cubs and shrimps are generally stocked in April and the number is 5-8 kilograms per acre. Shrimp are generally stocked in late June and early mid-July, and the acreage is 3-5 thousand. Stork species should be stocked with artificially cultivated quail species, typically 0.15-0.25 kg each. Before stocking, they must be sterilized with salt or potassium permanganate, etc. The stocking capacity is generally 500-1000 per mu. The stocking time is in late May, when the water temperature is stable above 25°C. Put natural snails to supplement the biological feeds of clams. Before stocking, they must consciously put a certain amount of fresh snails into the pond and allow them to breed and grow for feeding. The amount is 100-150 kilograms per mu. The management of feeding and managing fish is basically the same as that of conventional fish ponds, and it should be noted that feeds should be kept away from the eel's feed table so as not to affect the feeding. Feeding and management of clams and shrimps (1) Feed: Main feeds for cockroaches and shrimps. When the shrimps are multiplying, the shrimps that they reproduce are also the food supplements for earthworms. (2) Feeding method: From the 2nd day after stocking, stick feed on the feed table of the loquat, and feed it once every day at 7-8 am and 5-6 pm. It is best to feed the fish and shrimp after half an hour of feeding, so that it can be eaten in a quiet environment. (3) Water quality management: It is necessary to frequently add new water, and aerators should be turned on for oxygenation at noon and midnight. At the same time, lime-water or photosynthetic bacteria and EM bacteria and other beneficial microbial agents are splashed every 15-20 days to regulate and improve water quality. Daily management adheres to 3 times of morning, mid-night and evening inspections. Check whether the various facilities are in good condition, observe the changes in water quality and feeding activities, check whether there are diseases and hypoxia floating heads, etc., and take timely measures to identify problems. The disease prevention and control is usually disinfected once every 15 to 20 days with lime, dibromohydantoin, and EM crude drugs. Periodically add 1-2 ç»´ç”Ÿç´ vitamin C, quaternary ammonium iodide, and immune polysaccharides to feeds to increase animal resistance. When the disease is found, the cause should be immediately identified and treated with medication.
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