Preparation for promoting phosphorous release of bottom sludge of aquaculture pond, and preparation method and application of preparation

Abstract

The invention discloses a composite microbial preparation for promoting the phosphorous release of bottom sludge of an aquaculture pond, and a preparation method and a using method of the composite microbial preparation, and belongs to the field of microbial preparations. The composite microbial preparation consists of the following components in parts by weight: 30 to 60 parts of phosphate-solubilizing bacillus, 20 to 50 parts of phytase and 5 to 25 parts of sodium humate. Compared with the prior art, the composite microbial preparation, and the preparation method and the using method thereof have the beneficial effects that due to the use of the composite microbial preparation, deposited phosphorous of the bottom sludge of the aquaculture pond can be recycled and released for phytoplankton, the fertility of a water body can be improved, the problems of reutilization of the deposited phosphorous of the bottom sludge of the pond are solved, and meanwhile, the water quality and the sediment quality are improved.

Description

technical field [0001] The invention relates to the field of microbial preparations, in particular to a composite microbial preparation that promotes the release of phosphorus from the bottom mud of aquaculture ponds, a preparation method and a use method thereof. Background technique [0002] At present, the degree of intensification of pond culture has increased, and a large amount of output has been obtained through high-input compound feed and fertilization. The feed utilization rate of farmed animals is low, resulting in a large amount of phosphorus remaining in the pond, but the phytoplankton in the pond can only use a small part of inorganic phosphorus, most of which are deposited at the bottom of the pond, resulting in deterioration of the substrate. It can only be released under certain conditions (pH, microorganisms, etc.), resulting in low utilization. Studies have shown that phosphorus is one of the main limiting nutrient salts for the growth of phytoplankton in...

AI Technical Summary

Problems solved by technology

The feed utilization rate of farmed animals is low, resulting in a large amount of phosphorus remaining in the pond, but the phytoplankton in the pond can only use a small part of inorganic phosphorus, most of which are deposited at the bottom of the pond, resulting in deterioration of the substrate. It can only be released under certain conditions (pH, microorganisms, etc.), resulting in low utilization

Studies have shown that phosphorus is one of the main limiting nutrient salts for the growth of phytoplankton in ponds. In order to maintain a certain degree of fertility in the cultured water during the breeding process, phosphorus fertilizers should be frequently applied to promote the growth of phytoplankton, increase the fertility of the water body, and ensure a certain degree of dissolution. Oxygen, most of the additional added phosphorus enters the bottom mud through a series of changes, which causes a waste of phosphorus. At the same time, the phenomenon of high phosphorus content in the bottom mud and lack of phosphorus in the water body is formed, and the risk of breeding increases.

[0003] At present, the phosphorus deposited in the bottom of the aquaculture pond is generally treated by removal, adsorption deposition and covering, etc. The removal cost is high, and the adsorption deposition covering is to "lock" the phosphorus in the pond in the bottom mud to control the release of phosphorus in the bottom mud. However, with the change of the pond environment, when the conditions are suitable, a part of the adsorbed phosphorus will be released into the pond water again, causing the excessive reproduction of phytoplankton and forming endogenous pollution.

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