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Compound fertilizer containing biomass charcoal, and preparation method thereof

A technology of biomass charcoal and compound fertilizer, applied in chemical instruments and methods, fertilization devices, carbon compounds, etc., can solve the problem of single efficacy, achieve high degree of aroma, delay initial concentration, and reduce supply

Inactive Publication Date: 2020-09-15
INST OF AGRI RESOURCES & ENVIRONMENT SHANDONG ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] In order to overcome the single defect of existing biochar-containing fertilizers, the present invention provides a biochar-containing compound fertilizer with high fertilizer efficiency and suppression of soil-borne diseases and a preparation method thereof

Method used

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  • Compound fertilizer containing biomass charcoal, and preparation method thereof

Examples

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preparation example Construction

[0049] In the present invention, the preparation method of described biochar comprises the following steps:

[0050] (1) mixing corn stalks and fruit branches according to a mass ratio of 1-4: 1-2 to obtain a mixture of straw and fruit branches;

[0051] (2) mixing the straw fruit branch mixture with an aqueous potassium carbonate solution, drying after soaking to obtain an activated straw mixture;

[0052] The mass ratio of the straw fruit branch mixture to the potassium carbonate aqueous solution is 1: 2 to 4;

[0053] (3) Heating the activated straw and fruit branch mixture to 380-420°C and keeping it for 45-60 minutes; then raising the temperature to 580-620°C and keeping it for 60-100 minutes to obtain the carbonized material;

[0054] (4) After cooling, the carbonized material is soaked in hydrochloric acid solution, taken out, washed with water until neutral, and dried to obtain biochar.

[0055] In the present invention, the fruit branches refer to discarded branches...

Embodiment 1

[0086] Example 1 Compound fertilizer containing biochar

[0087] 1. Preparation of biochar

[0088] The discarded corn stalks and fruit branches are collected, crushed to 40 meshes respectively, and mixed according to the mass ratio of 2:3 to obtain a mixture of straw and fruit branches. Potassium carbonate is taken according to the ratio of 1:3 of the mass ratio of straw fruit branch mixture and potassium carbonate, and water is added to make potassium carbonate solution with a concentration of 1mol / L, and the above straw fruit branch mixture is mixed with the obtained potassium carbonate solution, 32 After impregnating at ℃ for 6 hours, drying at 80 ℃ to obtain the activated straw mixture.

[0089] Put the activated straw mixture in a muffle furnace, first raise the temperature to 400°C at a rate of 6°C / min, and keep it for 50 minutes; then continue to raise the temperature to 600°C at a rate of 10°C / min, and keep it for 80 minutes to obtain a carbonized material. After th...

Embodiment 2

[0095] Example 2 Compound fertilizer containing biochar

[0096] 1. Preparation of biochar

[0097] The discarded corn stalks and fruit branches are collected, crushed to 60 mesh respectively, and mixed according to a mass ratio of 1:1 to obtain a mixture of straw and fruit branches. Take potassium carbonate according to the mass ratio of straw fruit branch mixture and potassium carbonate 1:2, add water and potassium carbonate is mixed with a concentration of potassium carbonate solution that is 5mol / L, and mix the above straw fruit branch mixture with the obtained potassium carbonate solution for 30 After soaking at ℃ for 5 hours, drying at 75 ℃ to obtain the activated straw fruit branch mixture.

[0098] Put the activated straw and fruit branch mixture in a muffle furnace, first raise the temperature to 420°C at a rate of 5°C / min, and keep it for 40 minutes; then continue to raise the temperature to 580°C at a rate of 12°C / min, and keep it for 100 minutes to obtain a charre...

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Abstract

The invention provides a compound fertilizer containing biomass charcoal, and a preparation method thereof, and relates to the technical field of biochar compound fertilizers. The biomass charcoal-containing compound fertilizer is prepared from the following raw materials in parts by weight: 60 to 100 parts of biomass charcoal, 40 to 60 parts of a nitrogen-phosphorus-potassium compound fertilizer,30 to 50 parts of a phosphate solubilizing bacteria liquid, 12 to 20 parts of kaolin and 20 to 60 parts of livestock and poultry manure, wherein the biomass charcoal is prepared by taking corn strawand fruit branches as raw materials, the mass ratio of nitrogen to phosphorus to potassium in the nitrogen-phosphorus-potassium compound fertilizer is 18-15-10, and the viable count of the phosphate solubilizing bacteria liquid is more than 1*10<8> cfu / g. The compound fertilizer can improve the soil structure, increase the soil nutrient effectiveness, improve the crop resistance function, comprehensively improve the crop yield, reduce the fertilizer and pesticide application amount in the crop planting process and relieve soil hardening and agricultural non-point source pollution. The preparation method provided by the invention can prolong the lasting time and expiration date of the compound fertilizer.

Description

technical field [0001] The invention relates to the technical field of biochar compound fertilizer, in particular to a compound fertilizer containing biochar and a preparation method thereof. Background technique [0002] Biochar is a kind of black substance with high carbon content obtained by low-temperature pyrolysis of biomass (crop straw, livestock manure, organic waste, etc.), which does not include fossil fuel products and other geologically-originated carbon (Warnock DD et al., 2007, Pan Genxing et al., 2010). [0003] It is generally believed that biochar belongs to the category of black char. According to the source of biomass materials, biochar can be divided into charcoal, bamboo charcoal, straw charcoal, rice husk charcoal, animal manure charcoal, etc. (Zhang Dongsheng et al., 2006; Cao X D et al., 2010; Golldberg E D et al., 1985). The constituent elements of biochar are mainly carbon, hydrogen, oxygen, etc., and it is characterized by high carbon content (70...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/40C05G3/80C05G5/12C01B32/324C01B32/348
CPCC05D9/00C01B32/324C01B32/348
Inventor 田慎重董亮张玉凤边文范郭洪海高燕
Owner INST OF AGRI RESOURCES & ENVIRONMENT SHANDONG ACADEMY OF AGRI SCI
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