Red soil improving agent

A technology of improver and red soil, applied in the direction of soil conditioning materials, organic fertilizers, fertilizer mixtures, etc., can solve the problems of low production costs and achieve the effect of wide application prospects

Inactive Publication Date: 2012-02-15
INST OF ENVIRONMENT & SUSTAINABLE DEV IN AGRI CHINESE ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there is no domestic use of crop straw to prepare biomass coke, adding industrial waste such as red mud, and mixing it with calcium and magnesium to neutralize soil acidity, adju

Method used

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Examples

Experimental program
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Example Embodiment

[0017] Example 1

[0018] The red soil amendment provided by the present invention, calculated by weight percentage, includes: 30%-40% red mud, 15%-25% sepiolite, 20%-30% straw biomass coke, 10%-15% Calcium hydroxide (slaked lime) and 10% to 15% of magnesium oxide (light burnt powder).

[0019] In the above embodiments, 20%-30% of biomass coke is produced by carbonizing 40-50% of crop straw (such as rice, millet or corn straw).

Example Embodiment

[0020] Example 2

[0021] The embodiment of the method for preparing the above red soil amendment includes the following steps:

[0022] Calculated based on the total weight of 100 kg of the modifier, 30 kg of natural air-dried industrial waste red mud that passed through a 1.5mm sieve, 20 kg of sepiolite, 50 kg of rice or corn stalks that were crushed and passed through a 1.5mm sieve Mix the materials evenly, add an appropriate amount of water until the water can be discharged when grasping by hand;

[0023] Place the water-added material in a cement tank and cover it (make it in a relatively airtight environment). After stacking it for 3 to 5 days, move it from the cement tank into the carbonization furnace, slowly heat it to 500-550°C and keep it for 100 minutes (to make crop straw Carbonized and fully reacted with mixed red mud, sepiolite and other substances), naturally cooled to room temperature;

[0024] Take out the material cooled to room temperature from the carbonization f...

Example Embodiment

[0025] Example 3

[0026] The embodiment of the method for preparing the above red soil amendment includes the following steps:

[0027] Calculated based on the total weight of the modifier prepared with a total weight of 100 kg, 40 kg of natural air-dried industrial waste red mud passed through a 2.0 mm sieve, 15 kg sepiolite, 45 kg of crushed rice or corn stalks passed through a 2.0 mm sieve Mix the materials evenly, add an appropriate amount of water until the water can be discharged when grasping by hand;

[0028] Place the water-added material in a cement tank and cover it (make it in a relatively airtight environment). After stacking it for 3 to 5 days, move it from the cement tank into the carbonization furnace, slowly heat it to 500-550°C and keep it for 2 hours (to make crop straw Carbonized and fully reacted with mixed red mud, sepiolite and other substances), naturally cooled to room temperature;

[0029] Take out the material cooled to room temperature from the carbonizat...

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Abstract

The invention discloses a red soil improving agent which comprises the following components by weight percent: 30%-40% of red mud, 15%-25% of sepiolite, 20%-30% of straw biomass char, 10%-15% of calcium hydroxide and 10%-15% of magnesium oxide. Full test results prove that, by adopting the red soil improving agent and a preparation method thereof provided by the invention, the problems of poor crop growth and low yield caused by soil acidification in red soil areas in China, serious shortage of supply of calcium, magnesium and other medium elements and the like can be effectively solved, thereby having abroad application prospects in the red soil areas in the South.

Description

technical field [0001] The present invention relates to a soil conditioner, in particular to a conditioner capable of neutralizing soil acidity and regulating soil chemical properties. Background technique [0002] Affected by factors such as high temperature and rainy environmental conditions, cations such as potassium, calcium, and magnesium in the soil in southern my country (referred to as red soil) are easily lost through leaching, and the content of iron and aluminum oxides is high. The formed clay minerals It is mainly kaolinite. Therefore, the lack of soil nutrients, strong acidity, poor structure, and weak water and fertilizer retention capacity have become important reasons for the low yield and poor quality of crops in this area, and also restrict the sustainable development of agriculture and comprehensive productivity in this area. important factor for improvement. In recent years, due to the influence of various factors such as fertilization and management, the ...

Claims

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Application Information

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IPC IPC(8): C09K17/06C09K101/00C09K109/00
Inventor 曾希柏李莲芳白玲玉段然王亚男高菊生孙楠
Owner INST OF ENVIRONMENT & SUSTAINABLE DEV IN AGRI CHINESE ACADEMY OF AGRI SCI
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