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A method of using biogas slurry to prepare liquid fertilizer for irrigation of saline-alkali land

A technology for liquid fertilizer and saline-alkali land is applied in the field of using biogas slurry to prepare liquid fertilizer for saline-alkali land irrigation. Effect

Active Publication Date: 2019-03-29
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 saline-alkali land irrigation is prepared by using biogas slurry, which is prepared by the following steps:

[0025] (1) Pretreatment of biogas slurry: the biogas slurry after the solid-liquid separation after the fermentation of the biogas project is concentratedly treated, and the smashed wheat straw with a mass ratio of 5% is added to adjust the pH to 7.0-7.5;

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

[0027] (3) Preparation of fermentation inoculum: 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 bran, 3 parts of EM inoculum...

Embodiment 2

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

[0035] (1) Pretreatment of biogas slurry: the biogas slurry after solid-liquid separation after the fermentation of biogas project is concentratedly treated, and 3% mass ratio of pulverized wheat straw is added to adjust the pH to 7.0-7.5;

[0036] (2) Anaerobic fermentation in the black film storage tank: the pretreated biogas slurry is introduced into the black film storage tank, and the biogas-producing microbial agent with the mass ratio of the biogas slurry 2% is added, and the fermentation process is carried out at 30-40℃ for 10 days. Stir regularly, collect biogas after fermentation;

[0037] (3) Preparation of fermentation inoculum: 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 bran, 2 parts...

Embodiment 3

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

[0045] (1) Pretreatment of biogas slurry: The biogas slurry after solid-liquid separation after the fermentation of biogas project is processed in a centralized manner, and 4% by mass pulverized wheat straw is added to adjust the pH to 7.0-7.5;

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

[0047] (3) Preparation of fermentation inoculum: 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 parts of bran, 2.5 parts of EM inoculum , 1.5 part...

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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 saline-alkali land irrigation, in particular to a method for preparing liquid fertilizer for saline-alkali land irrigation by using biogas slurry, which belongs to the field of fertilizer processing. Background technique [0002] In recent years, with the development of animal husbandry and breeding, biogas projects have developed rapidly, and the pollution of biogas slurry produced has also increased. Although biogas slurry is rich in nutrient elements, amino acids, humic acid, auxin, hydrolase, vitamins and other biologically active substances, most of its treatment only stays in the direct farmland consumption mode, due to the continuous discharge of biogas slurry and seasonal fertilizer The contradiction of demand is difficult to solve, the logistics and transportation costs are high, and the biogas slurry is still a problem to be solved in agricultural pollution. In recent years, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12N1/20C05G3/00C05G3/04C12N1/16C12R1/07C12R1/01C12R1/10C12R1/04C12R1/225C05G3/80
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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