Crucian breeding method capable of reducing eutrophication of water body

Abstract

The invention discloses a crucian breeding method capable of reducing eutrophication of a water body. The crucian breeding method is characterized by comprising the following steps of: (1) treatment of pond mud: draining pond water, removing settled sludge at the bottom of a pond, spreading lime powder, exposing the pond to the sun, then spreading a sodium hypochlorite solution to the pond, spreading a mixed bacterial agent, performing sun-curing, and laying coarse sand and gravels on the bottom of the pond; (2) treatment of the pond water: pumping the pond water to a sealed pool and an aeration tank for treatment; (3) cultivation of aquatic plants: dividing the pond into three parts, ie., a dam, a shoal and the bottom of the pond, planting willows on the dam, transplanting zizania latifolia and acorus calamus to the shoal of the pond, and transplanting egeria densa Planch., elodea nuttallii, sagittaria sagittifolia and other aquatic weeds at the bottom of the pond; (4) mixed cultivation: adding freshwater snails, freshwater shrimps and male channa argus into the pond, and performing co-cultivation on the added freshwater snails, freshwater shrimps and male channa argus with crucian; and (5) prevention of diseases: spraying the pond with a mixed bacterial agent and plant extract regularly.

Description

technical field [0001] The invention belongs to the technical field of crucian carp culture, and in particular relates to a method for reducing water body eutrophication and crucian carp culture. Background technique [0002] Crucian carp is a freshwater fish of the family Cyprinidae, Cyprinidae, which is mainly distributed in Eurasia and is an omnivorous fish that feeds on plants. Crucian carp grows all year round in various waters in my country. Its distribution range is light, adaptable, and prolific. It is found in the Yellow River Basin, Yangtze River Basin, Pearl River Basin and Erhai Sea waters in my country; crucian carp likes to flock together, and likes to forage in shoals, river bends, ditches and reeds with abundant water and grass. It is the main edible and economic fish in my country. The main species include Dianchi high-back crucian carp, Founder gibel crucian carp, Pengze crucian carp and Qihe crucian carp. Crucian carp is economical and affordable, with tend...

AI Technical Summary

Problems solved by technology

[0003] The present invention is aimed at the existing problems: in order to shorten the breeding time and increase the economic income of farming in crucian carp culture, fish feed rich in protein and other organic matter is mostly used for breeding, although the growth rate of crucian carp will be improved, more feed will be produced during feeding Components remain in the water and the bottom of the pond, resulting in eutrophication of the pond water, a large number of pathogenic bacteria, a decrease in the oxygen content in the water, a restriction of the growth rate of crucian carp and an increase in the disease rate; and a large number of antibiotics are used in crucian carp farming to control diseases At the same time, it will cause the enrichment of antibiotic drug components in water and fish, reducing the food safety and nutrition of crucian carp meat

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