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Biological-organic fertilizer capable of passivating soil heavy metals and preparation method thereof

A bio-organic fertilizer and heavy metal technology, which is applied in the preparation of organic fertilizers, organic fertilizers, and the treatment of bio-organic parts. It can solve the problems of no significant increase in per unit yield and only 30% fertilizer utilization rate, and achieve strong endogenous microbial activity. The fermentation effect is thorough, and the effect of harmless treatment is strengthened

Active Publication Date: 2013-11-27
中化农业生态科技(湖北)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past eight years, my country's grain yield per unit area has not increased significantly, but the amount of chemical fertilizers has increased by nearly 40% in the same period, and the utilization rate of chemical fertilizers is only about 30%.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The bio-organic fertilizer of the present embodiment, the preparation method steps are as follows:

[0032] a) Take 35 parts of silicate microbial agent, 50 parts of organic material decomposing agent, and 10 parts of bioremediation agent and mix them with the medium evenly, and then crush until the fineness reaches 200-250 mesh, so as to ensure that the medium is of bacteria and 2 times the amount of the total mass of the carrier, and the medium accounts for 10% of the total mass of the mixture.

[0033] b) Take water of the same quality as the mixture in step a), heat it to 43°C, add the strain prepared in step a), and stir at constant temperature for 30-50 minutes until it dissolves evenly;

[0034] c) Put the liquid prepared in step b) into the medium fermenter, and ferment for 15 days at a room temperature of 20°C until no bubbles are produced in the medium fermenter, and a high-activity, high-density flora fermenter is obtained ;

[0035] d), take the livestock ...

Embodiment 2

[0039] The bio-organic fertilizer of the present embodiment, the preparation method steps are as follows:

[0040] a) Take 50 parts of silicate microbial agent, 35 parts of organic material decomposing agent, 15 parts of bioremediation agent and mix them with the medium evenly, and then crush until the fineness reaches 200-250 mesh, so as to ensure that the medium is of bacteria and 2 times the amount of the total mass of the carrier, and the medium accounts for 5% of the total mass of the mixture.

[0041] b) Take water of the same quality as the mixture in step a), heat it to 47°C, add the strain prepared in step a), and stir at constant temperature for 30-50 minutes until it dissolves evenly;

[0042] c) Put the liquid prepared in step b) into the medium fermenter, and ferment for 10 days at a room temperature of 30°C until no bubbles are produced in the medium fermenter, and a high-activity, high-density flora fermenter is obtained ;

[0043] d), take the livestock and p...

Embodiment 3

[0047] The bio-organic fertilizer of the present embodiment, the preparation method steps are as follows:

[0048] a) Take 40 parts of silicate microbial agent, 40 parts of organic material decomposing agent, 12.5 parts of bioremediation agent and mix them with the culture medium evenly, and then crush until the fineness reaches 200-250 mesh, so as to ensure that the culture medium is full of bacteria and 2 times the amount of the total mass of the carrier, and the medium accounts for 7.5% of the total mass of the mixture.

[0049] b) Take water of the same quality as the mixture in step a), heat it to 45°C, add the strain prepared in step a), and stir at constant temperature for 30-50 minutes until it is uniformly dissolved;

[0050]c) Put the liquid prepared in step b) into the medium fermenter, and ferment for 13 days at a room temperature of 25°C until no bubbles are generated in the medium fermenter, and a high-activity, high-density flora fermenter is obtained ;

[005...

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Abstract

The invention discloses a biological-organic fertilizer capable of passivating soil heavy metals, which is composed of microbial strains, a carrier and a culture medium, and livestock dung, wherein the microbial strains are prepared by a silicate microbial agent, an organic material decomposing agent, and a bioremediating inoculant in the microbial content rate of 1:1:0.25; the livestock dung is mainly cow dung, and on dry basis, the organic material is greater than or equals to 45%, and the moisture is less than or equals to 25%. The invention also discloses a preparation method for the biological-organic fertilizer. The preparation method comprises the following steps: using the microbial strains, the carrier and the culture medium to conduct prefermentation to prepare microbial flora sourdough with high activity and high density; then mixing the microbial flora sourdough with the livestock dung to conduct secondary fermentation to prepare the microbial high quality bio-organic fertilizer capable of passivating the soil heavy metals. The biological-organic fertilizer contains special strains, and can switch heavy metals of cadmium, arsenic and the like with higher activity in the ionic state in soil to heavy metals in the complexing state with lower activity; therefore the heavy metals absorption of crops is lowered, and the content of heavy metals in agricultural products is reduced.

Description

technical field [0001] The present invention relates to a bio-organic fertilizer suitable for base application and topdressing of agricultural planting soil, in particular to a bio-organic fertilizer capable of transforming ionic cadmium, arsenic and other heavy metals in the soil into complexed heavy metals, and the bio-organic fertilizer A method for preparing an organic fertilizer. Background technique [0002] Due to the unreasonable application of chemical fertilizers, soil fertility has declined, and soil heavy metal pollution has continued to aggravate. Improper use or improper management of farmland soil by high-intensity planting is the main reason for the continuous decline of soil organic matter and the decline of farmland fertility in major grain-producing areas in my country. In the past eight years, my country's grain yield has not increased significantly, but the amount of chemical fertilizers has increased by nearly 40% in the same period, and the utilizatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05F15/00C05F11/08C05F17/00
CPCY02W30/40
Inventor 宋克超华怀峰李建中徐立明郑永权马燕
Owner 中化农业生态科技(湖北)有限公司
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