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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, adjust the supply of secondary elements, increase crop yields, and Technical records of soil conditioners with functions such as improving soil physical and chemical properties and low production cost

Method used

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Examples

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Effect test

Embodiment 1

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

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

Embodiment 2

[0021] The method embodiment of preparing above-mentioned red soil improver comprises the following steps:

[0022] According to the total weight of 100 kg of improver, 30 kg of industrial waste red mud, 20 kg of sepiolite, 50 kg of rice or corn stalks crushed and passed through a 1.5mm sieve Mix the materials evenly, add an appropriate amount of water until the water can come out when grasped by hand;

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

[0024] Take out the material cooled to room temperature from the carbonization furnace, add 15 kilograms of calcium hydroxide (slaked lime) and 10 kilograms of magnesiu...

Embodiment 3

[0026] The method embodiment of preparing above-mentioned red soil improver comprises the following steps:

[0027] Calculated on the basis of preparing a total of 100 kg of improver, 40 kg of industrial waste red mud, 15 kg of sepiolite, 45 kg of crushed rice or corn stalks, which are naturally air-dried and passed through a 2.0mm sieve Mix the materials evenly, add an appropriate amount of water until the water can come out when grasped by hand;

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

[0029] Take out the material cooled to room temperature from the carbonization furnace, add 10 kilograms of calcium hydroxide (...

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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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