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Modified biomass charcoal-based saline-alkali soil improver

A biomass charcoal, biomass charcoal particle technology, applied in land preparation methods, calcareous fertilizers, fertilizer mixtures, etc., can solve the problems of neglecting plant and microbial tolerance, neglecting to improve soil structure, and destroying soil ecosystems. Improve the quality of agricultural products, increase water permeability, and stimulate crop growth

Pending Publication Date: 2020-06-26
MEILIGUOTU BEIJING ECOLOGICAL ENVIRONMENT ENG TECH RES INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The existing technology has a relatively single effect and is not sustainable. It needs to be applied all year round, and the cost remains high
For example, the conditioner published in CN201710424974.6 of the Chinese invention only focuses on reducing salinity and directly applies organic acids, ignoring the tolerance of plants and microorganisms, which can easily cause damage to the soil ecosystem
Moreover, improving soil structure and increasing soil nutrients are also neglected, which will have a certain effect in the short term, but it is difficult to sustain

Method used

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  • Modified biomass charcoal-based saline-alkali soil improver
  • Modified biomass charcoal-based saline-alkali soil improver
  • Modified biomass charcoal-based saline-alkali soil improver

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Embodiment 1: the preparation of modified biochar

[0050] A modified biochar, the preparation steps of which are as follows:

[0051] (1) Take corn stalks and anaerobically crack them at 550 degrees Celsius for 2 hours to obtain cracked corn stalks;

[0052] (2) Crush the cracked corn stalks, sieve, and take particles with a particle size of 1-3 mm to obtain biochar particles;

[0053] (3) Take biochar particles, add a citric acid aqueous solution with a mass fraction of 60%, the weight ratio of the two is 10:3, and fully mix to obtain a mixture;

[0054] (4) Dry the above mixture to obtain modified biochar, that is, citric acid modified corn stalk biomass.

Embodiment 2

[0055] Embodiment 2: Preparation of modified biomass charcoal-based saline-alkali soil improver

[0056] A modified biomass charcoal-based saline-alkali land modifier, the preparation method of which comprises the steps of:

[0057] The modified biomass charcoal, desulfurized gypsum, and humic acid prepared in Example 1 were uniformly mixed in a weight ratio of 6:9:5 to form the modified biomass charcoal-based saline-alkali soil improver of this example.

[0058] The desulfurization gypsum used in this example is an industrial by-product produced by coal-fired thermal power plants and steelmaking enterprises using limestone-gypsum wet desulfurization process for flue gas desulfurization. Its main component is calcium sulfate dihydrate, and its content is ≥93%. And the heavy metal content of the desulfurized gypsum sample needs to be measured before application, which is required to meet the national agricultural standards.

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Abstract

The invention discloses a modified biomass charcoal-based saline-alkali soil improver, which is prepared from the following materials in percentage by weight: 10 to 40 percent of organic acid modifiedbiomass charcoal, 30 to 70 percent of desulfurized gypsum and 10 to 40 percent of an acidic organic fertilizer. The invention also discloses a preparation method of the improver and a saline-alkali soil improvement method based on the improver. The improver can significantly reduce the pH value of saline-alkali soil, reduce the total salt content and improve the plant emergence rate.

Description

technical field [0001] The invention belongs to the field of soil improvement, in particular to a modified biomass charcoal-based saline-alkali soil improver. Background technique [0002] Land salinization is a worldwide problem faced by human beings. There are 950 million hectares of saline-alkali land in the world, covering more than 80 countries and regions. my country has about 36.3 million hectares of saline-alkali land, about 75% of which have not been effectively controlled and rationally developed and utilized. [0003] At present, the improvement measures in saline-alkali land mainly include physical measures, chemical measures and biological measures. Chemical measures are mainly the application of chemical modifiers, using the principle of acid-base neutralization to improve the physical and chemical properties of saline-alkali land, which is fast and efficient. Chemical improvers mainly have two functions, one is to improve the soil structure, accelerate the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40C09K101/00C09K109/00C05G3/80A01B79/02
CPCA01B79/02C05D3/02C09K17/40C09K2101/00C09K2109/00
Inventor 赵立敏韩德梁周兆媛王鹤立李云飞
Owner MEILIGUOTU BEIJING ECOLOGICAL ENVIRONMENT ENG TECH RES INST CO LTD
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