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Method for preparing liquid fertilizer for saline and alkaline land irrigation from biogas slurry

A technology for liquid fertilizers and saline-alkali soils, applied in the directions of liquid fertilizers, microorganism-based methods, biochemical equipment and methods, etc., can solve the problems of difficult large-scale application, high utilization cost, large water consumption, etc., to improve soil fertility, The effect of improving soil and promoting release

Active Publication Date: 2016-11-09
万代农业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used methods for salinized soil improvement include irrigation and salt washing, deep plowing of foreign soil, physical and chemical methods, and plant improvement methods in agriculture, etc., which can improve the soil and promote plant growth to a certain extent. High cost of use, easy to produce secondary pollution, especially huge water consumption, restricted by agricultural water resources, difficult to scale application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A liquid fertilizer for irrigation of saline-alkali land is prepared by using biogas slurry, which is prepared through the following steps:

[0025] (1) Biogas slurry pretreatment: centralized treatment of the biogas slurry after solid-liquid separation after fermentation of the biogas project, adding crushed wheat straw with a mass ratio of 5%, and adjusting the pH to 7.0-7.5;

[0026] (2) Anaerobic fermentation in the black film storage tank: import the pretreated biogas slurry into the black film storage tank, add a biogas-producing microbial agent with a biogas slurry mass ratio of 3%, and ferment at 30-40°C for 7 days. Stirring is carried out regularly in the process, and biogas is collected after fermentation and reception;

[0027] (3) Preparation of fermentation agent: Take 10 parts of activated carbon, 5 parts of calcium dihydrogen phosphate, 8 parts of fermented soybean meal, 15 parts of rice bran, 15 parts of corn flour, 5 parts of rapeseed cake, 15 parts of ...

Embodiment 2

[0034] A liquid fertilizer for irrigation of saline-alkali land is prepared by using biogas slurry, which is prepared through the following steps:

[0035] (1) Biogas slurry pretreatment: centralized treatment of the biogas slurry after solid-liquid separation after biogas engineering fermentation, adding crushed wheat straw with a mass ratio of 3%, and adjusting the pH to 7.0-7.5;

[0036] (2) Anaerobic fermentation in the black film storage tank: import the pretreated biogas slurry into the black film storage tank, add a biogas-producing microbial agent with a biogas slurry mass ratio of 2%, and ferment at 30-40°C for 10 days. Stirring is carried out regularly in the process, and biogas is collected after fermentation and reception;

[0037] (3) Preparation of fermentation agent: take 8 parts of activated carbon, 3 parts of calcium dihydrogen phosphate, 6 parts of fermented soybean meal, 10 parts of rice bran, 10 parts of corn flour, 3 parts of rapeseed cake, 10 parts of bra...

Embodiment 3

[0044] A liquid fertilizer for irrigation of saline-alkali land is prepared by using biogas slurry, which is prepared through the following steps:

[0045] (1) Biogas slurry pretreatment: centralized treatment of the biogas slurry after solid-liquid separation after fermentation of the biogas project, adding crushed wheat straw with a mass ratio of 4%, and adjusting the pH to 7.0-7.5;

[0046] (2) Anaerobic fermentation in the black film storage tank: import the pretreated biogas slurry into the black film storage tank, add a biogas-producing microbial agent with a biogas slurry mass ratio of 2.5%, and ferment at 30-40°C for 8.5 days. Stirring is carried out regularly during the process, and biogas is collected after fermentation and reception;

[0047] (3) Preparation of fermentation agent: Take 9 parts of activated carbon, 4 parts of calcium dihydrogen phosphate, 7 parts of fermented soybean meal, 12 parts of rice bran, 12 parts of corn flour, 4 parts of rapeseed cake, 12 pa...

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Abstract

The invention discloses a method for preparing liquid fertilizer for saline and alkaline land irrigation from biogas slurry. The comprehensive utilization value of the biogas slurry is remarkably improved through a three-time anaerobic fermentation process, high-valued and innocent treatment and resource utilization of the biogas slurry are achieved, the biogas slurry is used for agricultural development of saline and alkaline land, and the grain yield increase capacity of the saline and alkaline land is improved. The liquid fertilized prepared through the technology has a slight tart flavor, has no stink smell, and contains rich nutrient elements, amino acid, humic acid, auxin, hydrolase, vitamin, probiotics and other bioactive substances, wherein the index of the content of microorganisms reaches 109,000,000,000 / mL, and the pH ranges from 6.0 to 6.5. When the liquid fertilizer is applied to improvement in the saline and alkaline land, the physical and chemical structure of salinity soil can be remarkably improved, soil aggregate is increased, soil permeability is improved, soil fecundity is improved, and the grain yield increase capacity of the saline and alkaline land is improved. The liquid fertilizer is an excellent soil modifier and an excellent crop growth accelerant and is ideal fertilizer for saline and alkaline region soil improvement for grain yield increase.

Description

technical field [0001] The invention relates to a preparation process of liquid fertilizer for irrigation of saline-alkali land, in particular to a method for preparing liquid fertilizer for irrigation of saline-alkali land by using biogas slurry, belonging to the field of fertilizer processing. Background technique [0002] In recent years, with the development of animal husbandry and the rapid development of biogas projects, the pollution of biogas slurry is also increasing. Although biogas slurry is rich in nutrients, amino acids, humic acid, auxin, hydrolytic enzymes, vitamins and other biologically active substances, most of its treatment only stays in the mode of direct farmland consumption. Due to the continuous discharge of biogas slurry and seasonal fertilizer use The contradiction of demand is difficult to solve, the cost of logistics and transportation is high, and biogas slurry is still a problem to be solved in agricultural pollution. In recent years, some meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/04C12N1/20C12N1/16C12R1/07C12R1/01C12R1/10C12R1/04C12R1/225C05G3/80
CPCC05B1/04C05G3/00C05G3/80C05G5/20C12N1/16C12N1/20C05C9/00C05D9/02C05F5/00C05F5/002C05F9/04C05F11/00C05F11/08
Inventor 张志军王涛罗建华李怀健
Owner 万代农业科技有限公司
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