Method for regulating and controlling of water quality of Litopenaeus Vannamei culture pond

Abstract

The invention discloses a method for regulating and controlling of water quality of a Litopenaeus Vannamei culture pond, which comprises the following steps: at the middle and later periods for culturing Litopenaeus Vannamei, taking pond dissolved oxygen value of water quality at 8-12mg/L as a normal value; mixing a water quality regulation and control agent as well as pond water according to proportion of 1:10-15 when the pond dissolved oxygen value is continuously lower than 8mg/L for 4 days, and splashing in whole pond to complete the regulation and control of water quality; wherein the water quality regulation and control agent is composed of lactic acid bacteria, photosynthetic bacteria, molasses, calcium dihydrogen phosphate and water. Compared with the prior art, at the middle and later periods for culturing Litopenaeus Vannamei, when the pond dissolved oxygen value is continuously lower than 8mg/L for 4 days, the self made water quality regulation and control agent is employed for intervention, and probiotics function is fully performed, good culture environment can be kept, disease generation is reduced, culture risk is reduced, no antibiotic medicine is used in whole culture period, the application of other medicines is reduced, and the healthy green culture can be provided.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a method for controlling the water quality of a culture pond of Penaeus vannamei. Background technique [0002] At present, the main species of prawn farming in my country are Penaeus vannamei, Penaeus monodon, Penaeus japonica, Penaeus japonicus and other prawn species. Among them, Penaeus vannamei accounts for about 70-80% of the total output, and has become the absolute mainstay of shrimp farming in my country. dominant species. Penaeus vannamei is also recognized as one of the few excellent varieties, and is favored for its advantages such as fast growth, antibacterial and environmental adaptability. At present, Penaeus vannamei aquaculture has become the pillar industry of my country's aquatic industry. [0003] With the increasing production life of Penaeus vannamei and the increasing scale of farming, more and more problems are faced in the culture of Penae...

AI Technical Summary

Problems solved by technology

[0005] 1. A large amount of reproduction forms a "bloom", forming a thick layer of paint-like substances on the surface of the pond water body, reducing the dissolved oxygen in the pond water. What's more serious is that some species of cyanobacteria (such as Microcystis ) will also produce toxin (abbreviated as MC), which will directly cause poisonous effect on Penaeus vannamei;

[0006] 2. Inhibit the growth of other algae: Cyanobacteria itself has a super nitrogen-fixing function, so the ability of cyanobacteria to compete for nutrients in water is stronger than any other algae, and it is easy to form a dominant population in water. Penaeus prawns absorb, thus affecting the growth of prawns;

[0007] 3. After death, a large amount of oxygen is consumed. After the death of cyanobacteria, an unpleasant stench will be produced, which will consume a large amount of oxygen. At the same time, it will produce toxins after decomposition, which will deteriorate the water quality and cause a large number of deaths of Penaeus vannamei

That is to say, the patent application makes the lactic acid bacteria play a role by increasing the dosage of lactic acid bacteria and supplementing them regularly. It has defects such as short survival time, poor fecundity, inability to form dominant species, regular supplementation, and high production cost. It is not applicable. For marketing use

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