Method for preparing bio-charcoal granular organic fertilizer

Abstract

The invention discloses a method for preparing a bio-charcoal granular organic fertilizer. The technical scheme is that the bio-charcoal granular organic fertilizer is configured by the following raw materials by weight percent: 50% of bio-charcoal, 30% of a cow dung organic fertilizer and 20% of oyster shell powder. Solid powder of all the raw materials is meshed by a screen, water is added, stirring is performed to be uniform, the mass ratio of water to the solid mixed raw material is 0.7:1, extruding granulation molding is performed by a press roller granulator, and drying is performed at 40-70 DEG C. The method has the following beneficial effects: morphological characteristics of bio-charcoal and the organic fertilizer are improved and remolded, the moisture and fertilizer conservation capability of bio-charcoal is given into fully play, the fertilizer efficiency slow release effect is improved, the using space of bio-charcoal as a soilless culture substrate is increased, and the prepared bio-charcoal granular organic fertilizer serves for soilless culture industrialization and roof greening projects.

Description

technical field

[0001] The invention relates to the field of soilless cultivation substrate preparation, in particular to a method for preparing a soilless cultivation substrate prepared by using biomass charcoal as a carrier and mixing organic fertilizer and other auxiliary materials. Background technique

[0002] Biochar is a solid product obtained by pyrolysis of biomass materials (straw, bamboo, wood chips and other crops) under anoxic or anaerobic conditions. Since the 20th century, the research on biochar has attracted extensive attention from all over the world. Under the environment of sustainable agricultural development, the main aspects of biochar application research are to improve soil structure and physical and chemical properties, and to realize the recycling of biomass materials. and sustainable development. Biomass charcoal has porosity and huge specific surface area, has a large adsorption force and high C / N, so biochar has better water and fertilizer rete...

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