Method of improving ecological environment of enclosed seawater pond

Abstract

A method for improving the ecological environment of enclosed seawater pond features that the laver is cultured on the nets fixed to the floating frame and the ratio of the culture area to the whole seawater area is 1:10-30. It can prevent the eutrophication of seawater, improve water quality and increase the yield of laver.

Description

technical field [0001] The invention relates to a method for improving the ecological environment of puhai ponds. Background technique [0002] Most of the existing seawater ponds are mainly used for cultivating economic animals, such as shellfish such as razor clams and clams, as well as fish, shrimp and crabs. During the breeding process, the residual bait, animal corpses and excrement and excrement will increase the concentration of nutrients in the water, resulting in a decrease in dissolved oxygen in the water and an increase in the concentration of ammonia nitrogen, thereby destroying the ecological environment of the breeding water, especially the concentration of ammonia nitrogen. If it is too high, it will have a greater toxic effect on common economic animals. In addition, one or more types of benthic algae or planktonic algae often exist in the aquaculture water body, and when conditions are suitable, they will grow rapidly and their density will continue to incr...

AI Technical Summary

Problems solved by technology

But this is time-consuming and labor-intensive, and consumes a lot of manpower and material resources

If the water is changed too little or not in time (this is a phenomenon that often occurs in small tides), it is easy to cause a large number of benthic algae or planktonic algae to form water blooms or red tides, commonly known as pond turning, which affects the normal growth of economic animals; and If the water is changed too frequently, it will lead to increased costs

Another problem is that changing water in large-scale sea ponds often causes the discharged water to be reintroduced into aquaculture water, thereby reducing the efficiency of water exchange

Another method for improving the ecological environment of seawater ponds is to use water quality improvers or substrate improvers to inhibit the growth of phytoplankton, as disclosed in the Chinese invention patent No. 03126702.5 issued on October 20, 2004. The improver for the ecological environment of the bottom of the breeding pond and its use method can better improve the ecological environment of the pond culture, but the use of this improver can only play a short-term effect once, and it needs to be used every 10 to 20 days. Apply once, the cost is relatively high

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