Fertilizer for breeding aquatic products

Abstract

The present invention relates to a fertilier for aquaculture. It is characterized by that said fertilizer is formed from nitrogen fertilizer, phosphate fertilizer and solid wastes produced by using danty to produce fulvic acid liquid fertilizer, their weight percentages are 64%-85%, 6%-8% and 6%-30% respectively. Said fertilizer can be substituted for organic fertilizer, and is applicable to aquaculture. Besides, said invention also provides its several advantages.

Description

technical field [0001] The invention relates to a fertilizer for aquaculture. Background technique [0002] Pond fertilization technology has a long history in my country, the earliest use of livestock and poultry manure and the use of green manure to breed carp and grass carp. With the development of chemical fertilizer industry, inorganic fertilizers are widely used at present. Fertilization can increase the nutrients in the pond, promote the reproduction of bait organisms, and provide abundant natural bait for the aquaculture organisms, which can effectively improve the productivity of the pond and achieve a significant increase in production. At present, many farmers do not have a good grasp of fertilization techniques, and there are often insufficient or excessive fertilization problems. The former leads to thinner water quality and cannot cultivate bait organisms; while the latter leads to overfertilization of water quality, which is particularly likely to cause phyto...

AI Technical Summary

Problems solved by technology

At present, many farmers do not have a good grasp of fertilization techniques, and there are often insufficient or excessive fertilization problems. The former leads to thinner water quality and cannot cultivate bait organisms; while the latter leads to overfertilization of water quality, which is particularly likely to cause phytoplankton collapse in the later stage of breeding. As a result, the dissolved oxygen content in the pond is greatly reduced, which is harmful to the cultured organisms

When fertilizing, farmers are faced with the problem of fertilizer selection: general inorganic fertilizers have the characteristics of quick fertilizer and water effect, easy to use, but short duration; organic fertilizers have long fertilizer effects, can cultivate zooplankton at the same time, and reduce pond alkalinity, but application is troublesome Features

Nitrogen (calculated as N) and phosphorus (calculated as P) in the fertilizer 2 o 5 The sum of the content is 15-20%, the fertility is low, and phosphate rock powder is used as the raw material for production, the production cycle is long (need to ferment for more than 14 days), the solubility of phosphorus is also low, and it needs larger fertilization, chelating agent Disadvantages such as low content, and only suitable for freshwater fish ponds