Method for refining microbial organic fertilizer with branch lops

Abstract

The invention relates to a method for refining microbial organic fertilizer by using branch lops as main raw material. The method is characterized in that the branch lops undergo three-stage layered crush and then is fermented and thoroughly decomposed through corrosion; during fermentation, carbon nitrogen ratio is firstly adjusted to be 26-28, water content is about 56%, and highly-efficient degraded cellulose fungi are introduced; after decomposition through corrosion, fermented dry cow dung, humic acid and functional microorganisms are added into the branch lops so as to industrially obtain the microbial organic fertilizer which conforms to the standards of State Ministry Of Agriculture, i.e. organism content is greater than or equal to 30%, total nutrient of nitrogen, phosphorus and potassium is greater than or equal to 4%, water content is less than or equal to 20% and pH value is 5.5-8.0. The method provides a reliable, feasible and effective approach to handle the branch lops in cities and opens a new road for combining economic development with environment protection in the aspect of profound utilization of branch lops and efficient use of waste materials. Meanwhile, the organic fertilizer produced with the method is favorable for soil improvement and can be widely used in such green food plants as vegetables, fruit trees and the like, as well as lawns, flowers, grazing, virescence trees, and the like.

Description

technical field [0001] The invention relates to a method for industrialized production of bio-organic fertilizers using branch prunings as main raw materials, and belongs to the technical fields of environmental protection treatment of urban greening waste and green fertilizers. Background technique [0002] Tree branch clippings are urban solid wastes, which increase the amount of urban waste and the pressure on urban environmental protection. In the past, incineration and landfill methods were generally used. As a result, treatment costs are high, new environmental pollution is caused, and carbon dioxide emissions are increased. The incineration method is therefore gradually banned. [0003] In recent years, with the gradual improvement of environmental protection awareness, the value of reuse of tree branch trimmings has been realized, and some units in Shanghai have adopted the method of crushing tree branch trimmings with a shredder and directly covering them. However...

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Problems solved by technology

However, direct mulch will cause a series of negative effects: 1). When the wind blows, the mulch will cause air dust pollution; 2). Due to the high carbon-nitrogen ratio of the mulch that has not been fermented and decomposed, it will consume a lot of nitrogen fertilizer and oxygen in the soil. It is unfavorable to the growth of covered trees; 3). The mulch provides a suitable place for the growth of mold and the breeding and growth of diseased insects; 4). Affects the soil structure

[0004] In order to reduce the negative effects caused by direct covering of branch prunings after they are crushed, some units are now starting to use composting and making matrix methods. The key to this method is fermentation and decomposing. The optimal particle size that meets the fermentation requirements, and the carbon-to-nitrogen ratio is high, which seriously affects the fermentation quality and effect of branch prunings, and the substrate made can only be used as a soil improver

Secondly, even if the compost is made after fermentation and decomposing, because the content of the three elements of fertilizer nitrogen, phosphorus and potassium is very low and the fertilizer efficiency is poor, it can only be used as a base fertilizer for the vast rural areas, and the amount of application is large and has no commercial value.

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