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Combined material and method for rapidly reducing pH of soil

A technology for combining materials and soils, applied in soil conditioning materials, chemical instruments and methods, organic fertilizers, etc., and can solve problems such as difficult operation and complexity

Pending Publication Date: 2022-02-08
INST OF AGRI RESOURCES & ENVIRONMENT GUANGDONG ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above method is feasible for small-scale experiments, but it is complicated and difficult to operate if it is implemented on a large scale

Method used

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  • Combined material and method for rapidly reducing pH of soil
  • Combined material and method for rapidly reducing pH of soil
  • Combined material and method for rapidly reducing pH of soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 9kg weighed sulfur species, phosphorus-containing substances 1kg, pulverized and sieved to 100 mesh, particle size less than 100 mesh material taken, thoroughly mixed in a mixer of the composition prepared in Example cost. Then, it was thoroughly mixed with dry soil 2500kg, deionized water 500kg, the soil pH was measured after over two months, the method can be found so that the original pH was lowered to pH 5.26 3.17 soil acidity (soil pH change with time like figure 1 Indicated.

Embodiment 2

[0027] Sulfur-containing substance weighed 8kg, phosphorus-containing substances 1kg, pulverized and sieved to 100 mesh, particle size less than 100 mesh material taken, thoroughly mixed in a mixer of the composition prepared in Example cost. Then, it was thoroughly mixed with dry soil 2500kg, deionized water 500kg, the soil pH was measured after over two months, the method can be found so that the original pH was lowered to a pH of 5.7 to 3.42 soil acidity (soil pH change with time like figure 2 Indicated.

Embodiment 3

[0029] Sulfur-containing substance weighed 7kg, phosphorus-containing substances 0.5kg, pulverized and sieved to 100 mesh, particle size less than 100 mesh material taken, thoroughly mixed in a mixer of the composition prepared in Example cost. Then, it was thoroughly mixed with dry soil 2500kg, deionized water 500kg, the soil pH was measured after over two months, so that this method can be found to reduce the original soil acidity pH 5.5 to pH 3.70 (soil pH change with time like image 3 Indicated.

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Abstract

The invention discloses a combined material and method for rapidly reducing the pH of soil, the combined material comprises the following components in percentage by mass: 80-95% of a sulfur-containing substance and 5-20% of a phosphorus-containing substance, and the sulfur-containing substance comprises one or more of sulfur, ammonium bisulfate and sulfamic acid materials. The phosphorus-containing substance comprises one or more of ammonium dihydrogen phosphate, sodium dihydrogen phosphate and phytic acid, and the combined material provided by the invention can be quickly oxidized to generate a large amount of H < + > or directly release H < + >, so that a strong acid environment is formed, and soil acidification is intensified. The actual quantity of the sulfur-containing and phosphorus-containing combined material which should be added within an expected soil pH range can be calculated through a soil simulation test, then the sulfur-containing and phosphorus-containing combined material is applied to farmland, a reasonable soil pH range can be formed, and the method which is accurate, high in practicability and capable of rapidly reducing the soil pH and accelerating soil acidification is provided.

Description

Technical field [0001] Technical Field The present invention relates to improved soil, particularly, it relates to a combination of materials and method of rapid decrease of the soil pH. Background technique [0002] Rapid decrease in soil pH, accelerating soil acidification, soil can make a rapid and massive release of many cations, can be carried out at different pH gradient soil chemical, biological properties may provide, it may also be provided as part of the heavy metals completely fixed restoration, also acid corrosion can be carried out very acid analog may provide the context and prevent acid corrosion research. To date, the scientific research often through a strong acid pH buffer, diluent or lowering the soil pH, such as by addition of dilute sulfuric acid solution decreased the soil pH (Song Jianguo, 2005), by adding a diluted nitric acid solution decreased the soil pH (Li Zilong, 2014 ), concentrated sulfuric acid and dilute sodium hydroxide solution dilutions down t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40C09K17/04C09K109/00
CPCC09K17/40C09K17/04C09K2109/00
Inventor 唐拴虎易琼黄建凤张木黄巧义逄玉万黄旭韦思亦李苹吴永沛付弘婷吴腾飞程根
Owner INST OF AGRI RESOURCES & ENVIRONMENT GUANGDONG ACADEMY OF AGRI SCI
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