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Biochar-based soil modifier and application thereof

A soil conditioner, biochar technology, applied in the application, biofuel, soil conditioning materials and other directions, can solve the problems of treating the symptoms but not the root cause, and not fundamentally improving the physical and chemical properties of white mud soil, so as to prolong the fertilizer efficiency and increase the living environment. and quantity, the effect of improving fertilizer utilization

Inactive Publication Date: 2014-05-14
NORTHEAST AGRICULTURAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Previous measures to improve white pulp soil, such as white pulp layer mixed with sand, deep loosening of soil, and straw returning to the field, have a certain improvement effect on white pulp soil, but these measures and technologies have not really touched the barrier white pulp soil, which is a temporary solution rather than a permanent cure. , did not fundamentally improve the physical and chemical properties of white pulp soil

Method used

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  • Biochar-based soil modifier and application thereof
  • Biochar-based soil modifier and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Experiments on the effect of adding biochar to soil bulk density and porosity by planting rice in white pulp soil in the eastern part of Heilongjiang Province. The following treatments were set in the experiment:

[0033] Preparation of biomass straw charcoal: After drying and pulverizing rice straw, conduct high-temperature pyrolysis carbonization treatment in a furnace at 500°C for 3 hours, after carbonization, cool and pulverize, pass through a 2mm sieve to obtain biochar raw material.

[0034] (1) No addition of biochar (CF, Conventional fertilizer), blank control;

[0035] (2) Biochar treatment 1 (BCF1, Biological conventional fertilizer): single application of biochar, the application rate is 7.5 tons / ha;

[0036] (3) Biochar treatment 2 (BCF2, Biological conventional fertilizer): single application of biochar, the application rate is 10 tons / ha;

[0037] (4) Biochar treatment 3 (BCF3, Biological conventional fertilizer): single application of biochar, the applic...

Embodiment 2

[0042] Comparison of leaching experiments on the nutrient loss of white pulp soil by adding biomass charcoal and chicken manure to plant rice in white pulp soil in eastern Heilongjiang Province:

[0043] Preparation of biomass straw charcoal: After drying and pulverizing the corn stalks, conduct high-temperature pyrolysis carbonization treatment in a furnace at 700°C for 2 hours, after carbonization, cooling and pulverization, pass through a 2mm sieve to obtain biochar raw materials.

[0044] Pretreatment of chicken manure: add raw chicken manure to the special RW fermentation agent for organic fertilizer production (or organic material decomposing agent) at room temperature for aerobic fermentation, the raw chicken manure and the special RW fermentation bacteria for organic fertilizer production The weight ratio of the agent is 50:1. By overturning and stirring, ensure that the special RW fermentation agent for organic fertilizer production can be mixed evenly with the chicken m...

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Abstract

The invention relates to a biochar-based soil modifier, and aims at providing a Baijiang soil modifier which is low in cost, good in modification effect, economical and environment-friendly, has the functions of improving the water retention capability and the air permeability of soil, controlling slow release of fertilizers, relieving soil acidification and the like, and simultaneously, can be blended with organic and inorganic fertilizers. The soil modifier comprises biomass charcoal which is obtained by performing thermal cracking and charring on a biomass charcoal raw material under a limited-oxygen condition; and the biomass charcoal is applied through deep tillage to modify the quality of poor Baijiang soil.

Description

technical field [0001] The invention relates to a soil conditioner, in particular to a biochar-based soil conditioner and its application. Background technique [0002] At present, the research on biochar at home and abroad originates from the understanding of the black soil (Terra preta de indio) in the central part of the Brazilian Amazon Basin. As early as thousands of years ago, charcoal was used as a soil conditioner by the ancient Indians in the Amazon region of South America. The strong weathering and strong leaching soil in the tropics of South America has formed the local black soil (terra preta) whose soil fertility is still 2-3 times that of the local unimproved soil. One of the most fertile soils in the world. [0003] Biochar, as a carbon-rich and solid product obtained by high-temperature pyrolysis of biomass materials such as wood, rice husk, pine branches, corn stalks or other crop waste, has very special physical and chemical properties. The carbon content...

Claims

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Application Information

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IPC IPC(8): C09K17/02C10B53/02C09K101/00
CPCY02E50/10
Inventor 王宏燕王大庆代琳聂颖范金霞李传宝许毛毛
Owner NORTHEAST AGRICULTURAL UNIVERSITY
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