How to prevent and control diseases of pollution-free fish

Aquatic plants and fish co-exist in ponds, and fish rarely get sick. The aquatic plants planted in the fish pond are rice or lotus root, which are oriented from east to west. The row spacing should be wide (more than 33 cm), accounting for no more than 50% of the total area of the water body, so that the illumination effect is good. The water depth depends on the water tolerance of aquatic plants. Rice is generally within 30 cm, lotus root is generally more than 50 cm. Cultured fish can be conventional, famous, special and excellent new varieties. The breeding method can be used for seedling breeding and adult fish breeding. Because the bait residue, fish feces and so on deposit in the bottom of the pool, fermentation rot, not only pollutes the water quality, but also easy to breed harmful pathogens. Aquatic plants, however, can be absorbed as fertilizers, eliminating breeding sites for pathogens, resulting in low fish morbidity.

Chinese herbal medicines are sprinkled on rural hillsides, streams and roadsides. There are many Chinese herbal medicines, such as pine needle leaves, camphor leaves, willow leaves, chinaberry trees, water jupu, gallnuts, etc. When dead fish float on the water surface of fish pond, fish suddenly stop eating due to weather reasons, and fish swim alone, the Chinese herbal medicines can be collected or collected regularly, 15 - 30 kg per mu. In a large pot at the side of the pond, cut the collected Chinese herbal medicines into inch long sections, put them into the pot, add clean water, boil them, After continuous flooding and splashing water into the pool, the water color will turn brown after 12 hours, which is harmless to fish and water quality, and will quickly control the possible spread of potential fish diseases or prevent the occurrence of fish diseases.

In the practice of ecological disease prevention, it is found that in the fish pond ecosystem, if the more species and complexity of organisms, the more sound the ecosystem, the stronger the disease resistance of the system. If there are few species in the fish pond, the proportion of a single species is more than 50%, and the species is often prone to disease. And multi-breed farming: Grass carp, catfish, mullet, silver carp, Chinese soft-shelled turtle, turtle, eel and unavoidable wild miscellaneous fish, lion and clam shell coexist in the same pond. The ecological niche of each species is different, and there is a complex food chain relationship. Due to the "gill effect", carp and crucian carp seek food and dig the bottom of the pond, destroying the easy breeding environment of pathogens. The infected fish is eaten by carnivorous fish due to slow action, cutting off the transmission route of pathogens. The ecosystem automatically prevents diseases, so the incidence rate of pond is low.

Toad prevention fish disease observation for many years, fish pond and its surrounding toad more, pond@#@233@#@class rarely sick, because toad can dig, kill pathogens in the pond. Toads can be caught directly in fish ponds that are not easy to escape, while fish ponds that are easy to escape can be enclosed in bamboo baskets or net bags. The position is better at the water inlet, more than 5 per mu per pond. Enclosed toads had better be released after 3 days to avoid death. Toad in the town's riverside plants lush places more, can be found at night with flashlight, its ability to escape is not strong, easy to catch. After 2 to 3 years of catching toads to prevent fish diseases and releasing them, the toads in and around the pond will increase year by year, which can naturally effectively prevent the occurrence of fish pond diseases.