CN112919958A - Composite microbial fertilizer and preparation method thereof - Google Patents

Abstract

The composite microbial fertilizer is prepared from the following components in parts by weight: 100 parts of active humic acid, 10-15 parts of amino acid, 2-5 parts of biological agent and 3-5 parts of calcium sulfate. The preparation method of the compound microbial fertilizer sequentially comprises the following steps: (1) wetting active humic acid to make its water content be 0.5-1%; (2) adding amino acid, biological agent and calcium sulfate, blending and granulating; (3) and then coated with polycaprolactam. The compound microbial fertilizer is rich in active humic acid, amino acid and a large number of beneficial functional floras, and can achieve the effects of high fertilizer efficiency, soil conservation, insect and disease resistance, phosphate and potassium dissolution, growth and reproduction of the floras and the like; applicable crops are as follows: tea-oil camellia, day lily, banana, tobacco, fruit trees, field crops and the like.

Description

Composite microbial fertilizer and preparation method thereof

Technical Field

The invention belongs to the technical field of fertilizer preparation, and particularly relates to a compound microbial fertilizer and a preparation method thereof.

Background

The compound microbial fertilizer is a living microbial product which is formed by compounding specific microorganisms and nutrient substances and can provide, maintain or improve plant nutrition, increase the yield of agricultural products or improve the quality of the agricultural products. The most essential and remarkable characteristic of the microbial fertilizer is that the microbial fertilizer is a living fertilizer.

The microbial fertilizer is a biological fertilizer prepared by industrially culturing and fermenting one or more beneficial microorganisms. Microbial fertilizers are generally divided into two categories: one is that the supply of plant nutrient elements is increased by the life activity of the microorganism contained therein, resulting in improvement of the plant nutrient status and further increase of the yield, which represents the variety of bacterial manure; the other is a broad-spectrum microbial fertilizer which is not only limited to increasing the supply level of plant nutrient elements, but also includes the stimulation effect of secondary metabolites such as hormones generated by the microbial fertilizer on plants, although the microbial fertilizer can also increase the yield of crops through the action of the microbial life activity contained in the microbial fertilizer.

The microbial fertilizer can promote the absorption and utilization of nutrient elements by plants, or resist the pathogenic action of certain pathogenic microorganisms, and reduce plant diseases and insect pests, thereby improving the yield and quality of crops. The compound microbial fertilizer meets the standard NY/T798-2015.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a compound microbial fertilizer and a preparation method thereof, the compound microbial fertilizer is rich in active humic acid, amino acid and a large number of beneficial functional floras, and can achieve the effects of high fertilizer efficiency, soil-activating and soil-cultivating, insect and disease resistance, phosphate and potassium dissolution, growth and reproduction of the floras and the like; applicable crops are as follows: tea-oil camellia, day lily, banana, tobacco, fruit trees, field crops and the like.

The composite microbial fertilizer is prepared from the following components in parts by weight:

100 parts of active humic acid, 10-15 parts of amino acid, 2-5 parts of biological agent and 3-5 parts of calcium sulfate.

Active humic acid is a fertilizer efficient nutrient loss control agent and has the following principle: 1) humic acid is a macromolecular hydroxycarboxylic acid substance, has the capabilities of adsorbing, complexing and crosslinking fertilizer components so as to control the release speed of nutrient elements (molecules or ions) and reduce nutrient loss and fixation; 2) humic acid is a colloidal substance and has strong adhesion and peptization performances, so that the humic acid colloid can be wrapped around fertilizer granules, a porous coating is formed around the fertilizer granules after drying, and fertilizer nutrients are slowly released in soil, thereby prolonging the fertilizer effect period.

The biological agent is prepared from bacillus subtilis, lactic acid bacteria, actinomycetes, photosynthetic bacteria and azotobacter according to the weight ratio of 2:1:1:1:1, and the number of beneficial active bacteria is more than 5 hundred million/g.

The calcium sulfate can fix moisture, so that the fertilizer is free from being dried.

The preparation method of the compound microbial fertilizer sequentially comprises the following steps:

(1) wetting active humic acid to make its water content be 0.5-1%;

(2) adding amino acid, biological agent and calcium sulfate, blending and granulating;

(3) and then coated with polycaprolactam.

The polycaprolactone is a degradable material and plays a role in slow release in the use process of the material.

The compound microbial fertilizer is rich in active humic acid, amino acid and a large number of beneficial functional floras, and can achieve the effects of high fertilizer efficiency, soil conservation, insect and disease resistance, phosphate and potassium dissolution, growth and reproduction of the floras and the like; applicable crops are as follows: tea-oil camellia, day lily, banana, tobacco, fruit trees, field crops and the like.

Detailed Description

The process of the present invention is further illustrated by the following examples.

Example 1

The composite microbial fertilizer is prepared from the following components in parts by weight:

100 parts of active humic acid, 10 parts of amino acid, 4 parts of biological agent and 4 parts of calcium sulfate; the biological agent is prepared from bacillus subtilis, lactic acid bacteria, actinomycetes, photosynthetic bacteria and azotobacter according to the weight ratio of 2:1:1:1:1, and the number of beneficial active bacteria is more than 5 hundred million/g.

Example 2

The composite microbial fertilizer is prepared from the following components in parts by weight:

100 parts of active humic acid, 12 parts of amino acid, 3 parts of biological agent and 5 parts of calcium sulfate; the biological agent is prepared from bacillus subtilis, lactic acid bacteria, actinomycetes, photosynthetic bacteria and azotobacter according to the weight ratio of 2:1:1:1:1, and the number of beneficial active bacteria is more than 5 hundred million/g.

Example 3

The composite microbial fertilizer is prepared from the following components in parts by weight:

100 parts of active humic acid, 14 parts of amino acid, 5 parts of biological agent and 4 parts of calcium sulfate; the biological agent is prepared from bacillus subtilis, lactic acid bacteria, actinomycetes, photosynthetic bacteria and azotobacter according to the weight ratio of 2:1:1:1:1, and the number of beneficial active bacteria is more than 5 hundred million/g.

Example 4

The composite microbial fertilizer is prepared from the following components in parts by weight: 100 parts of active humic acid, 12 parts of amino acid, 4 parts of biological agent and 3 parts of calcium sulfate; the biological agent is prepared from bacillus subtilis, lactic acid bacteria, actinomycetes, photosynthetic bacteria and azotobacter according to the weight ratio of 2:1:1:1:1, and the number of beneficial active bacteria is more than 5 hundred million/g.

The preparation of examples 1 to 4 was as follows:

(1) wetting active humic acid to make its water content be 0.5%;

(2) adding amino acid, biological agent and calcium sulfate, blending and granulating;

(3) and then coated with polycaprolactam.

Comparative example 1

Comparative example 1 the procedure of coating with polycaprolactam was omitted from example 1, and the same conditions as in example 1 were used to plant camellia oleifera under the same conditions, the fertilizer efficiency of example 1 was increased by about 30 days and the yield was increased by about 10% compared to example 1, showing that the fertilizer of example 1 has a slow release effect.

Comparative example 2

Comparative example 2 the lactic acid bacteria were replaced with yeast on the basis of example 1, and the yield of comparative example 2 was about 6% lower than that of example 1 when camellia oleifera was planted under the same conditions as in example 1.

Claims (5)

1. The compound microbial fertilizer is characterized by being prepared from the following components in parts by weight:

100 parts of active humic acid, 10-15 parts of amino acid, 2-5 parts of biological agent and 3-5 parts of calcium sulfate.

2. The compound microbial fertilizer as claimed in claim 1, which is prepared from the following components in parts by weight: 100 parts of active humic acid, 10 parts of amino acid, 4 parts of biological agent and 4 parts of calcium sulfate.

3. The compound microbial fertilizer as claimed in claim 1, wherein the biological agent is prepared from bacillus subtilis, lactobacillus, actinomycetes, photosynthetic bacteria and azotobacter in a weight ratio of 2:1:1:1: 1.

4. The compound microbial fertilizer as claimed in claim 1, wherein the number of the beneficial active bacteria of the biological agent is more than 5 hundred million/g.

5. The preparation method of the compound microbial fertilizer as claimed in claim 1, which comprises the following steps in sequence:

(1) wetting active humic acid to make its water content be 0.5-1%;

(2) adding amino acid, biological agent and calcium sulfate, blending and granulating;

(3) and then coated with polycaprolactam.