Method for estimating excretion amount of nitrogen, phosphorus and organic carbon in marine shellfish aquaculture

Abstract

The invention relates to a method for estimating an excretion amount of nitrogen, phosphorus and organic carbon in marine shellfish aquaculture. The method comprises the following steps: (1) acquiring a test sample and treating the sample; (2) grouping and measuring total excretion amount of total nitrogen YN, total phosphorus YP and total organic carbon YC in each group of samples; (3) calculating average length Li and average excretion amount Yi of the ith group of experimental shellfishes; (4) establishing a regression model; and (5) predicting the overall breeding group by utilizing the established regression model. The method accurately calculates the excretion amount of the nitrogen, phosphorus and organic carbon of shellfishes in an aquiculture area, provides effective data for ecological monitoring, provides a scientific basis for large-scale aquiculture management of shellfishes and provides a guarantee for reasonably utilizing marine resources, controlling marine pollution and continuously producing marine shellfishes.

Description

technical field [0001] The present invention specifically relates to a method for constructing an estimation model of total nitrogen, total phosphorus and organic carbon excretion in marine shellfish culture, which can quickly calculate the total excretion of total nitrogen, total phosphorus and organic carbon in marine shellfish, and belongs to fishery ecology Environmental monitoring technology field. Background technique [0002] In recent years, with the continuous expansion of the scale of the farming industry and the development of the farming method from semi-intensive to highly intensive, large-scale deaths of farmed shellfish have occurred frequently, and the problem of self-pollution of farming has gradually emerged and become increasingly prominent. The excrement produced is the main source of self-pollution of the aquaculture waters. [0003] In the process of shellfish farming, shellfish will produce a large number of soluble and granular metabolites that have ...

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Problems solved by technology

[0004] At present, research on shellfish self-pollution has been carried out earlier and widely abroad, while domestic research started relatively late, and mainly discusses some physiological and biochemical indicators of scallops from the perspective of energetics and physiology, while the research on their excreta is relatively limited. Research limited to one or a few forms

In these studies, the pure indoor simulation experiment has certain limitations due to the defects of experimental conditions and methods, and the method of in-situ biodeposition is used, and the data of dissolved N, P and organic carbon excretion are not collected, and the data of organic carbon excretion are not complete. , resulting in the lack of reliable and conclusive data support when evaluating the impact of shellfish excretion on the pollution of a certain aquaculture water body

On the other hand, the current research on the relationship between nitrogen excretion of aquatic animals and environmental factors has made some progress, but the establishment of mathematical models for expressing the relationship between nitrogen, phosphorus and organic carbon excretion of shellfish and various environmental factors No research report yet

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