An organic slow-release fertilizer controlling growth of apple trees and a preparing method thereof

Abstract

An organic slow-release fertilizer controlling growth of apple trees and a preparing method thereof are disclosed. The fertilizer is prepared from papermaking black liquid, a sulfuric solution having a concentration of 10 wt%, a formaldehyde solution having a concentration of 5%, sodium sulfite, ammonium molybdate, indoleacetic acid, anthocyanidin, formic acid, calcium superphosphate, chitosan, boric acid, zinc powder, monopotassium phosphate, calcium oxide, gypsum powder, calcium ammonium nitrate and a proper amount of water by weight parts. The fertilizer belongs to a plant hormone type organic fertilizer. A plurality of chemical elements are added. Alkalinity and acidity of general chemical elements influence effects of plant hormones to a certain degree, while the fertilizer utilizes a modified lignic acid component to turn metal elements in the chemical elements into organic acids, thus greatly reducing the influences and effectively controlling growth of the apple trees, and therefore development and benefit in each aspect are better than those of other apple trees.

Description

technical field [0001] The invention belongs to the technical field of fertilizers, and in particular relates to an organic slow-release fertilizer for controlling the growth of apple trees and a preparation method thereof. Background technique [0002] The alkaline pulping process widely used in the paper industry, whether woody or non-woody plants are used as raw materials, produces a large amount of black liquor by-products. According to statistics, the global annual output of black liquor is about 500 million tons, and about 70% of the black liquor is The solids are organic matter, including lignin, hemicellulose, and cellulose degradation products. Lignin is a complex polymer compound that exists in the xylem of most land plants. There are about 10 million tons of lignin. At present, most of the black liquor is concentrated to 45-60%, then burned and recovered by alkali, resulting in a huge waste of lignin, a renewable resource contained in it, and papermaking black li...

AI Technical Summary

Problems solved by technology

At present, most of the black liquor is concentrated to 45-60%, then burned and recovered by alkali, resulting in a huge waste of lignin, a renewable resource contained in it, and papermaking black liquor flows into the environment, causing high pollution and containing a large amount of The pollutants contained in organic fibers, inorganic salts and pigments account for more than 90% of the pollutants in the papermaking industry, and they are highly alkaline, dark in color, heavy in odor and rich in foam, and consume a large amount of dissolved oxygen in water, causing serious damage to the environment. the destruction of