No-pollution application method for giblets of marsh gas fermentation

A biogas fermentation and application method technology, applied in fertilization methods, applications, waste fuels, etc., can solve the problem of not being able to provide sustainable nutrients for crop growth, achieve crop yield and quality assurance, save energy, and realize waste reuse. Effect

Inactive Publication Date: 2008-07-16
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this technology is that the nutrients in the biogas slurry are mainly quick-acting nutrients, and using the biogas slurry alone as a base fertilizer cannot provide lasting nutrients for crop growth, and the crops need to be topdressed with chemical fertilizers in the later stage of growth

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1: The applied crop is Chinese cabbage (Shanghai Qing), and the performance is a genotype with low nitrate content. Use 1000kg biogas fermentation residue per mu as the base fertilizer and apply it to the vegetable field by digging ditches when plowing. During the growing period of crops, spraying 1.8% during the epidemic of diseases and insect pests will kill 2000-3000 times.

[0019] The above-mentioned method of use is the same as that of only applying conventional chemical fertilizers (using urea 10.034g in the amount per mu, Na 2 HPO 4 5.169g, K 2 SO 4 5.063g) and no fertilization (clear water contrast), the result is: the pH value of the soil after harvesting is 7.19, and its available potassium content has increased by 7.48% than that of no fertilization, and the available phosphorus content is higher than that of using conventional chemical fertilizers and no fertilization. Increased by 6.71% and 16.07%, the nitrogen content of alkaline hydrolysis in...

Embodiment 2

[0024] Example 2: The applied crop is Chinese cabbage (Shanghai Qing), and the performance is a genotype with low nitrate content. Use 1500kg biogas fermentation residue per mu as the base fertilizer and apply it to the vegetable field by digging ditches when plowing. During the growth period of crops, spraying 1.8% during the epidemic period of pests and diseases will kill 2000-3000 times.

[0025] Above-mentioned method of use and only applying chemical fertilizer (use urea 10.034g in mu consumption rate, Na 2 HPO 4 5.169g, K 2 SO 4 5.063g) and no fertilization (clear water contrast), the result is: the pH value of the soil after the harvest is 7.03, and its available potassium, available phosphorus and alkaline nitrogen content have increased by 0.40%, 1.17% respectively than using conventional chemical fertilizers, and 18.69%, respectively increased by 13.03%, 10.04%, and 0.35% compared with no fertilization; the yield per mu of the obtained product was 4.67%, 19% high...

Embodiment 3

[0031] The applied crop is Chinese cabbage (Shanghaiqing), and the performance is a genotype of low nitrate content. Use 2000kg biogas fermentation residue per mu as the base fertilizer and apply it to the vegetable field by digging ditches when plowing. During the growing period of crops, spraying 1.8% during the epidemic of diseases and insect pests will kill 2000-3000 times.

[0032] The above-mentioned method of use is the same as that of only applying chemical fertilizers (using urea 10.034g in the amount per mu, Na 2 HPO 4 5.169g, K 2 SO 4 5.063g) and no fertilization (clear water contrast), the result is: the pH value of the soil after the harvest is 7.02, and its available potassium, available phosphorus and alkaline nitrogen content have increased by 16.61%, 11.51% respectively than using conventional chemical fertilizers, and 27.01%, respectively increased by 31.28%, 21.30%, and 7.38% than those without fertilization; the yield per mu of the obtained products was...

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Abstract

The invention relates to a non-polluted application method for the firedamp ferment residue in the technical field of agriculture, which comprises the following steps: directly fetching the firedamp residue deposited at the bottom of anaerobic digestive organs at the locations of discharge tubes at the bottom of a normally operated large and medium sized anaerobic digestive organ with a gross solid content of more than 10 percent; after fetching out the ferment residue from different discharge tubes, sufficiently stirring and mixing in a container and then carrying out split charging; when preparing land before seeding, firstly plowing the land once and removing the scum in the acquired firedamp ferment residue; when the ratio of N: P2O5: K2O in the biogas manure is 0.5 :0.2 to 0.4:0.2 to 0.4, digging and applying by taking 1000kg to 2000kg per mu as the basic fertilizer and then covering the soil horizon. The invention solves a series of problems caused by unreasonable utilization of the prior basic fertilizer, saves energy, fully utilizes the waste resources, realizes waste reutilization as well as improves the energy transformation and material circulation efficiencies.

Description

technical field [0001] The invention relates to a fertilizer application method in the field of agricultural technology, in particular to a pollution-free application method of biogas fermentation residues. Background technique [0002] Biogas fermentation residue (biogas slurry, biogas residue) is the organic residue after anaerobic fermentation of human and animal manure, plant residues, etc. to produce biogas. Among them, biogas slurry is the residual liquid after fermentation, mainly including organic and inorganic salts released during the fermentation process, such as ammonium salt, potassium salt, phosphate and other soluble substances, with a total solid content of less than 1%. Compared with biogas residue, the nutrients of biogas slurry are mainly available nutrients. Because the fermented product is soaked in water for a long time, some soluble nutrients are transferred from the solid phase to the liquid phase, which increases the content of available nutrients. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01C21/00C05F7/00
CPCY02A40/20Y02E50/30Y02W30/40
Inventor 刘荣厚王远远
Owner SHANGHAI JIAO TONG UNIV
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