Biological organic fertilizer and preparation method thereof

Abstract

A biological organic fertilizer comprises the following raw materials in parts by weight: 85-96 parts of crop straws, 39-42 parts of animal manure, 24-28 parts of cake meal, 20-25 parts of biogas residue, 12-15 parts of an odor removal adsorbent, 7-8 parts of an inorganic compensator, 1.3-1.5 part of saccharomycetes, 1.2-1.5 part of bacillus licheniformis, 1.9-2.2 parts of a multi-temperature-period composite strain and the balance of water. The odor removal adsorbent is added in the preparation process of the organic fertilizer, and the surface of the activated carbon in the odor removal adsorbent is grafted with amino groups and C=S double bonds, and both can carry out adsorption reaction with heavy metal Hg <2+>, CO < 2+> and the like, so that adsorption and fixation of poisonous heavymetal ions are realized, meanwhile, the activated carbon can remove residual peculiar smell in the fermented product, and the problem that toxic heavy metal ions in the existing organic fertilizer cannot be completely removed is solved.

Description

technical field [0001] The invention belongs to the field of organic fertilizer preparation, and relates to a biological organic fertilizer and a preparation method thereof. Background technique [0002] In agricultural planting, in order to meet the needs of plant growth, it is usually necessary to fertilize crops. The application of inorganic fertilizers cannot completely provide all the substances necessary for plant growth. Therefore, many types of organic fertilizers are now added to fertilizers. The existing organic fertilizer preparation In the process, all raw materials are fermented at medium temperature, then decomposed at high temperature, and finally fermented at low temperature. The prepared organic fertilizer can provide organic matter and elements necessary for plant growth. However, in the existing fermentation process, crude fiber and other raw materials together Fermentation is likely to cause incomplete fermentation and affect the final fertilizer efficien...

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Problems solved by technology

[0003] The object of the present invention is to provide a kind of bio-organic fertilizer and its preparation method. The straw fiber raw material in the organic fertilizer is first fermented, so that the crude fiber is decomposed in advance, and the small molecule organic matter generated is then mixed with animal manure, cake and marsh When the slag is mixed and fermented, the beneficial bacteria in it can further act on the small molecular organic matter, so that the straw can be fully fermented, thereby increasing the content of beneficial elements in the product and improving the growth of the plant. Bacteria and multi-temperature composite strains can continue to function at high temperatures. Because the materials in the fermenter quickly achieve maturity at high temperatures, the action of beneficial bacteria can speed up the process of decomposition. Under the conditions of other beneficial bacteria dying or dormant , through the multi-temperature compound strains, the decomposing process can be accelerated, the material can be fully decomposed, and then the content of each element in the product can be increased, and an inorganic compensator is added to the product. The inorganic compensator contains metal ions necessary for plant growth, metal ions Under certain conditions, it can be complexed and fixed with the fermentation product, so that the metal ion content necessary for plant growth in the prepared organic fertilizer is sufficient, and the nitrogen, phosphorus and other elements lacking in the organic fertilizer are also compensated by the inorganic compensator, so that the single The supply of plant nutrients can be achieved by using bio-organic fertilizers, without adding additional inorganic fertilizers during the planting process, thereby solving the problem that in the fermentation process of existing organic fertilizers, the fermentation of crude fiber and other raw materials is likely to cause incomplete fermentation and affect The final fertilizer efficiency, and the content of the essential elements for plant growth in the organic fertilizer cannot reach a certain standard, and it needs to be used in conjunction with the inorganic fertilizer in the later stage. Not only the fertilization efficiency is low, but also the fertilizer efficiency is affected by two fertilizations

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