Mixed culture method of hyriopsis schlegeli and bulk freshwater fishes

Abstract

The invention relates to a mixed culture method of hyriopsis schlegeli and bulk freshwater fishes. The method is characterized in that: bulk freshwater fishes living in medium and lower water layers, such as black carp and bream, are put in water before culturing the hyriopsis schlegeli in a hanging way; and bulk freshwater fishes living in medium and upper water layers, such as grass carp, chub,crucian and terch, are put in water after culturing the hyriopsis schlegeli in a hanging way. By the mixed culture method disclosed in the invention, the hyriopsis schlegeli and the bulk freshwater fishes, such as black carp, grass carp, chub, bream and the like, are cultured together so as to obtain obvious culturing economical benefit. In the method, since the bulk freshwater fishes living in the medium and lower water layers are put in water before the hanging culture of the hyriopsis schlegeli, and organic matters at the bottom layer are stirred to float up to the upper layer through the moving of the fishes in the water, nutrient substances are supplied for the growth of planktonic algae and sufficient algae supply is ensured during the hanging culture of the hyriopsis schlegeli; after the temperature rises, bulk freshwater fishes living in the medium and upper water layers are put in water so that the scale of floating animals and plants in water can be effectively controlled, thereby creating good water environment for growth of the hyriopsis schlegeli.

Description

technical field [0001] The invention belongs to the technical field of fish and shellfish mixed culture, and in particular relates to a method for mixed culture of butterfly mussels and bulk freshwater fish, that is, mixed culture of pond butterfly mussels and bulk freshwater fish such as green, grass, silver carp, bighead carp, crucian carp, and bream. Background technique [0002] In recent years, my country's freshwater pearl culture industry has developed rapidly, and the scale of pond culture has continued to expand. The traditional high-density pearl cultivation mode of "fertilization-cultivation of plankton-cultivation of river mussels-harvesting pearls" has many problems such as serious degradation of pearl-cultured mussel germplasm, serious pollution of fertilization, and low-quality pearls, which have seriously affected my country's pearl industry. bigger and stronger. Due to the defects of the traditional culture structure and culture mode, my country's freshwater...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for mixed cultivation of butterfly mussels and bulk freshwater fish, that is, to mix large freshwater fish such as green, grass, silver carp, bighead carp, crucian carp, and bream with pond butterfly mussels, so as to solve the problem of breeding pearl clam germplasm. Problems such as serious degradation, serious fertilization pollution, and low-grade pearl quality are used to make up for the deficiencies of existing technologies