Special high-efficiency compound fertilizer for freshwater aquiculture

Abstract

The invention relates to the technical fields of agricultural novel fertilizers and fishing aquiculture, in particular to a special high-efficiency compound fertilizer for freshwater aquiculture. The special high-efficiency compound fertilizer is characterized by consisting of the following effective components in percentage by weight: 30-60 percent of cured organic matter, 30-54 percent of inorganic fertilizer, 3-7 percent of chelated trace fertilizer, 5-7 percent of microbial agent, 2.5-4 percent of compound multi-ore and 1 percent of water quality improver. The special high-efficiency compound fertilizer for freshwater aquiculture uses a scientific formula of trace elements according to the abundant lean condition of the trace elements in soil of China for the first time and is beneficial to improving the utilization rate of mineral nutrition contents and preventing the water body pollution caused by excessively adding the trace elements. The fertilizer contains a plurality of macroelements and intermediate trace nutrient elements which are essential for phytoplankto, has coordinated nutrient proportion and is especially suitable for the growth of delectable living feeds for fishes, such as diatom, Euglena, cryptomonas, chrysophyceae, and the like.

Description

technical field [0001] The invention relates to the technical field of new agricultural fertilizers and the technical field of fish farming, in particular to a preparation method of special fertilizer for aquaculture. Background technique [0002] Under suitable environmental conditions such as light and temperature, the supply of dissolved mineral nutrients in water directly determines the rate and output of primary production in water, and ultimately affects the output of farmed fish. In freshwater aquaculture, especially in intensive culture ponds, it is far from enough for the mass growth of biological bait to rely on the mineralization of the bottom soil and surface runoff to replenish mineral nutrients. Therefore, it is not enough to supplement the mineral nutrients in the aquaculture water through fertilization to promote the growth of diatoms and euglena. The growth of phytoplankton such as phytoplankton, cryptoalgae, and golden algae, and then providing more natural...

AI Technical Summary

Problems solved by technology

There are still two obvious deficiencies in the existing fishery fertilizers: one is only from the perspective that algae can only absorb soluble nutrients in water, in order to prevent direct deposition of fertilizers after entering the water, one-sided emphasis is placed on the solubility of fishery fertilizers

Because if we only emphasize the solubility of fish fertilizer, it will actually cause rapid diffusion of nutrients and combine with rich organic colloids in the aquaculture water to deposit on the bottom of the water, which is not conducive to the use of algae

The second is that the fertilizer formula lacks consideration of the differences in the type of soil substrate and nutrient mineralization in the water body, which leads to an imbalance in the formula and affects fertilizer efficiency.