Method for cultivation of fish in carbonate type heavy saline-alkali marshland

Abstract

The present invention relates to a carbonate type heavy saline swamp fish-breeding method, which includes: excavating open water channel on the heavy saline swamp, putting up fishpond, reasonable applying fertilizer, improving water quality, at the same time injecting water and discharging water at the right moment, reasonable breeding fishes, and effectively controlling animal plankton proliferation and mass growth of trisetose gold alga, ensuring ecological environment for normal growth of fishes and providing mass bait. Said invention can reduce pH value of heavy saline swamp, and its salt content and alkalinity, which can meet the growth condition of fishes.

Description

technical field [0001] The invention belongs to fish farming in agricultural technology, and relates to a method for cultivating fish in swamps, in particular to the technology for cultivating fish in carbonate-type severe swamps. Background technique [0002] Saline-alkali marshes are one of the main types of saline-alkali land resources. According to the salt content of the soil, it can be divided into chloride type, sulfate type and carbonate type; according to the salt content, it can be divided into mild, moderate and severe saline-alkali marshes. At present, a small amount of mild and moderate saline-alkali marshes have been developed for fish farming, but most saline-alkaline marshes, especially severe saline-alkali marshes, have not been utilized yet. The water quality of severe saline-alkaline marshes has a pH of over 8.82, a salt content of over 5.7 g / L, and a total alkalinity of over 12 mmol / L. Under such water quality conditions, fish cannot grow and reproduce n...

AI Technical Summary

Problems solved by technology

Because saline marshes are only limited to individual areas in the natural environment, the cultivation techniques for saline marshes are still rare in the literature