Nutrient composition for algae cultivation in breeding water body at late stage, and preparation method thereof

A technology for cultivating water bodies and nutrients, applied in water pollutants, chemical instruments and methods, animal husbandry wastewater treatment, etc., can solve problems such as decreased phosphorus source content, difficulty in maintaining algae, and unmaintainable water bodies, so as to prevent excessive leanness and facilitate Industrialization promotion, beneficial to the effect of stable growth

Pending Publication Date: 2019-11-19
JIANGXI INST OF AQUATIC SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the late stage of aquaculture water, the accumulation of organic matter in the water body is large, the content of phosphorus sources decreases, and the balance between nutrients is broken again. The possibility of algae blooms is increasing, and the water temperature is gradually decreasing, making it difficult to maintain algae.
However, most of the existing technologies ignore the characteristics of the water body at this stage, and adopt a nutrient formula throughout the year, which leads to the inability to maintain the water body in the later stage, and algal blooms and other phenomena occur from time to time, which brings risks to the later stage of breeding

Method used

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  • Nutrient composition for algae cultivation in breeding water body at late stage, and preparation method thereof
  • Nutrient composition for algae cultivation in breeding water body at late stage, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A nutrient composition for cultivating algae in the late stage of aquaculture water, comprising the following raw materials in weight percentage:

[0046] Fermented organic fertilizer 6%;

[0047] Humic acid 68%;

[0048] Monoammonium Phosphate 11%;

[0049] Glucose 8%;

[0050] Potassium chloride 7%;

[0051] The water content of the fermented organic fertilizer is less than 30%, the pH is 5.5, the total arsenic of heavy metals is ≤15 mg / kg, the total cadmium is ≤3 mg / kg, and the total mercury is ≤2 mg / kg; the humic acid is black humic acid.

[0052] The preparation method of above-mentioned nutrient composition, comprises the following steps:

[0053] (1) Take the fully fermented fermented organic fertilizer, pulverize, pass through 80 sieves, then add humic acid, stir and mix until uniform, the stirring speed is 30r / min, and the stirring time is 20min to obtain the mixture;

[0054] (2) Add monoammonium phosphate, glucose and potassium chloride to the mixture obta...

Embodiment 2

[0056] A nutrient composition for cultivating algae in the late stage of aquaculture water, comprising the following raw materials in weight percentage:

[0057] Fermented organic fertilizer 17%;

[0058] Humic acid 53%;

[0059] Monoammonium phosphate 5%;

[0060] Glucose 18%;

[0061] Potassium chloride 7%;

[0062] The water content of the fermented organic fertilizer is lower than 30%, the pH is 6, the total arsenic of heavy metals is ≤ 15 mg / kg, the total cadmium is ≤ 3 mg / kg, and the total mercury is ≤ 2 mg / kg; the humic acid is black humic acid.

[0063] The preparation method of above-mentioned nutrient composition, comprises the following steps:

[0064] (1) Take the fully fermented fermented organic fertilizer, pulverize it, pass through 100 sieves, then add humic acid, stir and mix until uniform, the stirring speed is 40r / min, and the stirring time is 10min to obtain the mixture;

[0065] (2) Add monoammonium phosphate, glucose and potassium chloride to the mix...

Embodiment 3

[0067] A nutrient composition for cultivating algae in the late stage of aquaculture water, comprising the following raw materials in weight percentage:

[0068] Fermented organic fertilizer 10%;

[0069] Humic acid 53%;

[0070] Monoammonium phosphate 13%;

[0071] Glucose 8%;

[0072] Potassium chloride 16%;

[0073] The water content of the fermented organic fertilizer is less than 30%, the pH is 7, the total arsenic of heavy metals is ≤15 mg / kg, the total cadmium is ≤3 mg / kg, and the total mercury is ≤2 mg / kg; the humic acid is black humic acid.

[0074] The preparation method of the above-mentioned nutrient composition is the same as that of Example 1.

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Abstract

The present invention provides a nutrient composition for algae cultivation in a breeding water body at a late stage. According to the present invention, the nutrient composition timely and reasonablyprovides algae with the N:C:P:K nutrient composition based on the characteristics of the nutrients and the characteristics of slow growth and rapid death of algae in a breeding water body at a late stage so as to continuously maintain the normal photosynthesis of algae in the late breeding stage, slow down the death rate of algae, maintain the number of the algae in the water body, avoid the aging and excessive leanness of the water body, continuously provide the breeding objects in the water body with the stable environment and natural bait, and ensure the continuous growth of the breeding objects; and the nutrient composition can quickly increase the sources of N, C, P and K in water, correct the balance of various elements in the water body, promote the photosynthesis of algae, maintain the stable amount of algae, prevent the aging of the water body, stabilize the water body, and easily achieve the continuous growth of breeding objects.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a nutrient composition used for culturing algae in the late stage of aquaculture water and a preparation method thereof. Background technique [0002] Algae are a kind of relatively primitive and ancient lower organisms. Algae are mainly aquatic and have no vascular bundles. They contain substances such as chlorophyll, lutein and carotene in their bodies, and can absorb carbon dioxide and salts through photosynthesis. There are many types of algae, generally divided into Cyanophyta, Euglena, Chrysophyta, Dinophyta, Chlorophyta, Phaeophyta, Rhodophyta and so on. Algae mainly grow in water. In water rich in nutrients and slow flowing, when the sun is sufficient and the water temperature is high, algae are easy to reproduce, which will cause algal blooms and water quality deterioration. The content of algae will also affect the sensory indicators of the water body,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32C02F1/68C02F103/20C02F101/20
CPCC02F3/322C02F1/68C02F2101/20C02F2103/20
Inventor 欧阳敏
Owner JIANGXI INST OF AQUATIC SCI
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