Superfine powder biological fertilizer for aquiculture

Abstract

The invention particularly relates to a superfine powder biological fertilizer for aquiculture. The superfine powder biological fertilizer is characterized in that the biological fertilizer comprises effective elements in percentage by pure nutrients as follows: larger than or equal to 18.5% of nitrogen, larger than or equal to 13.0% of phosphorus pentoxide and larger than or equal to 1.0% of potassium oxide, wherein the number of living bacteria in a bacillus subtilis microbial agent is at least 108 cfu / g; after raw materials are mixed and subjected to superfine grinding, the biological fertilizer with particle diameters smaller than or equal to 120 meshes or larger than 200 meshes accounts for 38%, the biological fertilizer with particle diameters smaller than or equal to 200 meshes accounts for 37%, and the biological fertilizer with particle diameters larger than 120 meshes accounts for 25%. As for an intensive culture pond and a large water surface, the proportion of nitrogen and phosphorus in water is adjusted, and an algal phase is adjusted, so that physicochemical and biological factors of the water are more suitable for growth of fishes. The color of water in a fertilization area is good, the nutrient utilization rate is high, the culture survival rate is remarkably increased, the incidence rate is reduced by about 50%-70%, the use quantity of culture medicines is reduced by 43%-45%, and the income from every 666 m<2> of the water surface is increased by 100-200 RMB yuan.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a superfine powder biological fertilizer for aquatic products. It is related to the technical field of special fertilizer for aquatic products. Background technique [0002] my country is a big country in aquaculture, and its aquaculture production has accounted for more than 70% of the world's aquaculture production for many years. In 2014, the output of aquaculture aquatic products in my country reached 47.62 million tons, accounting for 73.8% of the total output of 64.5 million tons. Aquatic products provide more than 30% of the protein for the people. While the aquaculture industry is developing rapidly, there are also problems such as few high-quality aquatic products, declining product quality, few export-earning brands, serious waste of resources, and serious environmental damage. Food safety, food safety and environmental safety have become the main focus...

AI Technical Summary

Problems solved by technology

[0005] "Fish farming first raises water". Good water quality is the premise to ensure high yield and high-quality aquatic products. In my country's aquaculture, there has been a lot of randomness in "fertilizing fish" for decades, and many products lack water quality. The understanding of characteristics, without special formula, leads to poor effect, low utilization rate of nutrient elements, and causes water pollution and environmental damage

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