Carbon-based composite biological fertilizer and preparation method and application thereof

Abstract

The present invention discloses a carbon-based composite biological fertilizer. The carbon-based composite biological fertilizer is prepared from the following raw materials in parts by weight: 20-60parts of biochar, 10-30 parts of plant ash, 8-25 parts of medical stone powder, 3-15 parts of zeolite powder, 2-8 parts of potassium feldspar powder, 1-6 parts of ground phosphate rock, 15-45 parts ofhumic acid, 1-10 parts of potassium fulvate and 1-15 parts of photosynthetic nitrogen fixation composite bacteria. The carbon-based composite biological fertilizer gives full play to the respective advantages of photosynthetic nitrogen fixation composite bacteria, biochar, plant ash, medical stone powder, zeolite powder, potassium feldspar powder, ground phosphate rock, humic acid and potassium fulvic acid, not only realizes effective improvement and remediation of soil and improves the crop yield, but also is beneficial to promoting the development of green low-carbon agriculture. The invention also provides a preparation method of the carbon-based composite biological fertilizer, which is simple and convenient to operate and convenient for batch production. The invention also provides application of the carbon-based composite biological fertilizer, and the carbon-based composite biological fertilizer is compounded with one or more of decomposed manure, an organic fertilizer, slag, biomass pyrolysis residues or crop wastes according to different types of soil, so that the fertilizer efficiency is exerted.

Description

technical field [0001] The invention relates to the field of fertilizers, in particular to a carbon-based composite biological fertilizer and its preparation method and application. Background technique [0002] At present, human activities such as fossil fuel combustion, production and use of chemical nitrogen fertilizers, and the rapid development of animal husbandry have released CO into the atmosphere. 2 and active nitrogen compounds surged, and atmospheric nitrogen deposition also showed a trend of rapid increase, which in turn led to soil acidification and CO 2 issues such as excessive emissions. Biological nitrogen fixation is mainly carried out by nitrogen-fixing microorganisms, but most inorganic nitrogen cannot be passively and directly used by plants. Only ammonium salts and nitrates can be absorbed and utilized by plants. The amount of ammonium salts and nitrates is limited, which greatly limits the growth of plants, resulting in Crop production is reduced. Th...

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Problems solved by technology

This will inevitably increase the cost of fertilization for farmers, and cause environmental pollution and waste of resources due to repeated industrial construction and production.

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