A microbial fertilizer promoting root nodule growth for soybean and a preparing method thereof

Abstract

A microbial fertilizer promoting root nodule growth for soybean 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, bone meal, brown sugar residues, ardealite, azotobacteria, potassium bacteria, phosphate solubilizing bacteria, edible mushroom leftovers, red bean residues, Chinese milk vetch straw, calcium ammonium nitrate, ammonium molybdate, ferrous sulfate, zinc chloride, shell powder and a proper amount of water by weight parts. The fertilizer is an organic-inorganic composite fertilizer rich in microbes. Soil microbe inhibiting functions of inorganic components after being adsorbed by lignin can be greatly reduced so that the living environment of the azotobacteria and other microbes added is good. Through simple multiplication culture and adaptive culture, viability of microbes in soil is greatly improved. Soybean root nodule formation is effectively promoted. Absorption of potassium and phosphorus is promoted. Disease resistance of leguminous plants is improved.

Description

technical field [0001] The invention belongs to the technical field of fertilizers, and in particular relates to a microbial fertilizer for promoting root nodule growth of soybeans 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 liquor flow...

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