Hybrid culturing method for bass and crucian by using ecological-floating-bed-technology-based pond

Abstract

The invention discloses a hybrid culturing method for bass and crucian by using an ecological-floating-bed-technology-based pond. On the basis of lift habits of various cultured fishes, intercroppingyellow-head catfishes only need to eat residual feeds fully and intercropping crucian plays a role in removing excrements of the bass. When the crucian and yellow-head catfishes, together with the bass, are cultured together in a pond, a phenomenon that the water quality is affected by the residual feed corruption and deterioration is prevented, the ecological balance of the pond is kept, and thecrucian and yellow-head catfish yields are increased additionally. With the biological floating bed technology, water hyacinth is transplanted and the coverage rate of the water hyacinth on the watersurface is controlled, so that nitrogen and phosphorus transformation effect is fully utilized, the dissolved oxygen content in the water is ensured, and biomass of the green alga and blue-green algaeand the like is reduced obviously. Therefore, the purification effect of the culturing pond water is realized; and thus the healthy growth of fishes is promoted effectively and the culturing yield isincreased.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to a method for cultivating perch and crucian carp in ponds using ecological floating bed technology. Background technique [0002] In order to pursue economic benefits, traditional aquaculture overuses aquaculture water, which leads to deterioration of water quality and seriously affects the green and healthy development of my country's aquaculture industry. Therefore, related research on improving the aquaculture water environment and constructing an environment-friendly and efficient aquaculture model has become a hot spot in the field of aquaculture research. [0003] Water hyacinth (Eichhornia crassipes) is a monocotyledonous perennial plant belonging to the genus Eichhornia crassipes. It has a fast propagation speed and is a good source of feed and organic fertilizer. Water hyacinth was introduced to my country from South America in the 1930s, and was widely stocked in th...

AI Technical Summary

Problems solved by technology

Biological floating bed technology has attracted much attention due to its advantages of low cost and high benefit, but the floating bed in the pond must reach a certain area to play the role of converting nitrogen and phosphorus. However, due to the existence of "water respiration", when the plant coverage reaches a certain level , will eventually cause other aquatic organisms and fish to compete for dissolved oxygen (DO) in the water body, resulting in a decrease in dissolved oxygen in the water body, resulting in increased fish mortality