Efficient biogas slurry fertilizer and preparation method thereof

Abstract

The invention provides an efficient biogas slurry fertilizer and a preparation method thereof. The efficient biogas slurry fertilizer is prepared from, by mass, 32%-57% of biogas slurry, 10%-32% of ammonium nitrate phosphate, 5%-27% of urea, 9%-15% of potassium nitrate, 5%-7% of ammonium sulphate, 5%-13% of ammonium dihydrogen phosphate, 0.5%-2% of borax, 0.74%-3% of EDTA magnesium, 0.4%-1.5% of EDTA zinc, 0.4%-1.5% of EDTA manganese, 0.08%-0.15% of DA-6 and 5%-7% of potassium fulvate. The efficient biogas slurry fertilizer is prepared by utilizing fruit and vegetable waste anaerobic-fermentation substrate biogas slurry, healthy development of green agriculture is also achieved while the biogas slurry utilization way for solving the gradual output increase problem is provided, and the problems of environmental pollution, resource shortage and planting safety of big cities are solved. Compared with direct biogas slurry application, the biogas slurry fertilizer is more comprehensive in nutrition and higher in content, reaches the standards of NY1106-2010 humic acid-containing water-soluble fertilizers, different forms of nitrogen sources are combined, and nitrate nitrogen, ammonium nitrogen and amido-nitrogen in the nitrogen sources can be organically combined and blended according to different crops and different climates, so that the fertilizer efficiency is higher and longer, the utilization rate is higher, precipitation and crystallization are not likely to occur, and the stability and a usage effect are good.

Description

[0001] [technical field] [0002] The invention relates to the technical field of new liquid organic-inorganic fertilizers and the technical field of recycling agricultural waste resources, in particular to a method for preparing high-efficiency biogas slurry fertilizer by using biogas slurry as an anaerobic fermentation substrate of fruit and vegetable garbage. [0003] [Background technique] [0004] In the field of biogas slurry fertilizer preparation technology, the existing technology is mainly aimed at the treatment and reuse of traditional biogas slurry. The fermentation raw materials are mainly organic wastes such as poultry manure and crop straw. At present, there is no anaerobic fermentation substrate for fruit and vegetable waste. Biogas slurry treatment and reuse technology. Moreover, the existing technology is too complicated for the treatment of traditional biogas slurry, and the energy consumption is high: as in the patent CN201110083922 "a kind of biogas slurry ...

AI Technical Summary

Problems solved by technology

[0004] In the field of biogas slurry fertilizer preparation technology, the existing technology is mainly aimed at the treatment and reuse of traditional biogas slurry. The fermentation raw materials are mainly organic wastes such as poultry manure and crop straw. At present, there is no anaerobic fermentation substrate for fruit and vegetable waste. Biogas slurry treatment and reuse technology

Moreover, the existing technology is too complicated for the treatment of traditional biogas slurry, and the energy consumption is high: such as patent CN201110083922 "a kind of biogas slurry drip irrigation fertilizer and its preparation method" adopts vacuum heating and concentration; CN201210043708 "Using biogas slurry to produce efficient organic liquid fertilizer and the equipment used therein” add humic acid and other flocculation sedimentation, and filter; CN201110137123 “A Biogas Slurry Fertilizer Production Method with No Odor in Biogas Slurry and High Fertilizer Efficiency” adds carbon source, nitrogen source, and microbial secondary aerobic fermentation; CN200810116956 “One A method and equipment for preparing organic liquid fertilizer from biogas slurry > multi-layer filtration through filtration equipment, etc.

In terms of nutrition deployment, the current technology simply adds nutrients such as urea, potassium chloride, and potassium dihydrogen phosphate, which have the following shortcomings: 1. Incomplete nutrition, such as nitrogen sources, mainly use urea as a raw material, and do not consider different forms The combination of nitrogen, the fertilizer effect is slow in low temperature weather, and the high temperature is easy to burn seedlings; 2. The content is low and cannot meet the relevant national standards; 3. When the content reaches the relevant national standards, it is easy to produce precipitation and crystallization, which will affect the stability and application effect

However, due to its low nutrient content, if it is directly used to irrigate crops, in addition to high labor intensity, harmful substances and incompletely decomposed organic matter will cause secondary pollution and inhibit crop growth.

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