Organic compound fertilizer used for breeding prawn

Abstract

A composite organic fertilizer for culturing prawns is prepared from dried chicken droppings (82-90 Wt%), inorganic fertilizer (8-16) and the salt containing trace elements (1-3). Its advantages are rich nutrients, durable fertility and high effect to improve water quality.

Description

technical field [0001] The invention relates to a fertilizer for aquaculture, in particular to an organic compound fertilizer for prawn cultivation. Background technique [0002] Fertilization plays an important role in aquaculture. Fertilization can increase the nutrients in the pond, effectively increase the primary productivity of the pond, promote the reproduction of bait organisms, and provide abundant natural bait for the aquaculture organisms, thereby achieving a significant increase in production. And fertilization breeding technology has quite long history in my country, the earliest is to use livestock and poultry manure and utilize green manure to breed silver carp and grass carp etc. And now generally use simple and convenient inorganic fertilizers. However, many farmers do not have a good grasp of fertilization techniques such as how to fertilize, the amount and frequency of fertilization, and problems of insufficient or excessive fertilization often occur. T...

AI Technical Summary

Problems solved by technology

However, many farmers do not have a good grasp of fertilization techniques such as how to fertilize, the amount and frequency of fertilization, and problems of insufficient or excessive fertilization often occur

The former leads to thin water quality, and the bait organisms cannot be cultivated; while the latter leads to over-fertilized water quality, which is especially easy to cause phytoplankton to collapse in the later stage of cultivation, thereby greatly reducing the dissolved oxygen content in the pond and endangering the cultivation organisms.

At the same time, farmers are faced with the problem of fertilizer selection when fertilizing: general inorganic fertilizers have the characteristics of fast fertilizer and water effects, convenient use, and short duration; organic fertilizers have long fertilizer effects, can cultivate zooplankton and benthic animals at the same time, and reduce pond alkalinity. However, it is troublesome to use and other characteristics

This fertilizer is a typical inorganic fertilizer. Its disadvantages are short duration of fertilizer effect, high dosage, and low content of main nutrients. It is only effective for phytoplankton and cannot improve the stability of the plankton community.