Environment-friendly biochar-based organic fertilizer and preparing method thereof

Abstract

The invention relates to environment-friendly biochar-based organic fertilizer. The environment-friendly biochar-based organic fertilizer is prepared from, by weight, 10-15% of biochar, 77-87% of organic fertilizer, 0.5-1.5% of wood vinegar, 0.5-1.5% of an environment-friendly enzyme and 2-4% of a binding agent. The preparing method includes the steps that the biochar and the organic fertilizer are mixed uniformly by a ratio, and the mixed material is pulverized and screened, wherein the part, with the particle size smaller than or equal to 1mm, of the screened material serves as a mixed material A, and the part, with the particle size larger than or equal to 1mm is returned to a pulverizer to be pulverized and screened again; the wood vinegar and the environment-friendly enzyme are added into the mixed material A by a ratio and fully stirred and mixed uniformly to obtain a mixed material B; the binding agent is added into the mixed material B by a ratio, tap water is added in a spray mode, the water content of the material is adjusted to be 30-35%, and all the components are fully stirred and mixed uniformly to obtain a mixed material C; granulating and drying are carried out to obtain the environment-friendly biochar-based organic fertilizer.

Description

technical field [0001] The invention relates to an organic fertilizer and a preparation method thereof, in particular to an environment-friendly biochar-based organic fertilizer and a preparation method thereof. Background technique [0002] Biochar refers to the material left after the tar and gas in the plant or animal biomass are processed at high temperature under anaerobic conditions. The carbon content of biochar is more than 95%. When applied to the soil, on the one hand, it increases the organic carbon content of the soil and plays a role in improving the soil. On the other hand, biochar uses its super-strong sponge-like adsorption to absorb the nutrients and water needed for crop growth in the soil around it, one is to prevent loss, and the other is to achieve the effect of slow release, thereby improving Fertilizer and water use efficiency. [0003] Wood vinegar refers to a liquid recovered from flue gas. The refined wood vinegar after removing wood tar has the f...

AI Technical Summary

Problems solved by technology

This invention patent overcomes the deficiency that the current biochar-based fertilizer itself contains organic pollutants such as polycyclic aromatic hydrocarbons. However, after the action of biochar and persistent organic pollutant-degrading composite bacteria agent, the persistent organic matter-degrading bacteria have lost their activity. After the biochar-based fertilizer is applied to the soil for planting, it no longer decomposes the pesticide organic matter adsorbed by the biochar, and also faces the problem of enrichment of organic pollutants

Images