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Soil improvement agent and processing method thereof

A technology of soil improver and accelerator, applied in the field of soil improvement, can solve the problems of excessive heavy metals and harmful trace elements, high cost of soil improvement for farmers, and unsatisfactory effects, etc., to improve physical and chemical properties, reduce pH value, and improve survival rate. Improved effect

Inactive Publication Date: 2013-04-03
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the particle size of the modifier after crushing is large, it is not conducive to the ion exchange reaction, and the improvement effect is poor; if the particle size of the modifier is small after crushing, it will consume a lot of energy, making the cost of soil improvement too high for farmers to bear
Chinese patent application CN101624523A discloses "a saline-alkali improver", which is prepared by mixing aluminum sulfate, ferrous ammonium sulfate and magnesium sulfate according to different weight ratios. A large amount of chemical raw materials are required to make the improver, instead of using Industrial waste, high cost
Chinese patent CN1664064A discloses "an alkaline soil improver" which mainly uses phosphogypsum, straw and urea in different proportions to make a soil improver; High element content will cause heavy metals and harmful trace elements in the improved soil to exceed the allowable value of the national standard
[0005] In general, the disadvantages and technical problems of the prior art are: complex process, high cost, and unsatisfactory effect

Method used

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  • Soil improvement agent and processing method thereof
  • Soil improvement agent and processing method thereof
  • Soil improvement agent and processing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] 1. Improver: 90g of desulfurized gypsum, 3g of furfural slag, 5g of biomass coke, 5g of weathered coal, 0.05g of urea, and 0.01g of microbial fertilizer.

[0059] 2. Processing method:

[0060] (1) Separately crush the microbial fertilizer with a pulverizer and pass through a 60-mesh sieve;

[0061] (2) Add the pulverized microbial fertilizer and the above-mentioned other raw materials into a mixer and mix them evenly, and then add them into a disc granulator for granulation to obtain a granular alkaline soil amendment.

[0062] 3. Improvement process (application of soil conditioner):

[0063] (1) The improved land shall be rough leveled first to remove the obvious concave and convex areas on the land;

[0064] (2) Carry out laser leveling, so that the slope of the farming block is 0.05%;

[0065] (3) The above-mentioned improvers are mixed and evenly applied to the soil surface (the depth of application is 30cm of the cultivated layer), and the amount per unit area...

Embodiment 2

[0069] 1. Improver: 90g desulfurized gypsum, 1g furfural slag, 3g biomass coke, 3g weathered coal, 0.1g urea, 0.05g microbial fertilizer.

[0070] 2. Processing method:

[0071] (1) Separately crush the microbial fertilizer with a pulverizer and pass through a 30-mesh sieve;

[0072] (2) Add the pulverized microbial fertilizer and the above-mentioned other raw materials into a mixer and mix them evenly, and then add them into a disc granulator for granulation to obtain a granular alkaline soil amendment.

[0073] 3. Improvement process (application of soil conditioner):

[0074] (1) The improved land shall be rough leveled first to remove the obvious concave and convex areas on the land;

[0075] (2) Carry out laser leveling, so that the slope of the farming block is 0.05%;

[0076] (3) The above-mentioned improvers are mixed and evenly applied to the soil surface (the depth of application is 35cm in the depth of the cultivated layer), and the amount per unit area is determ...

Embodiment 3

[0080] 1. Improver: 90g of desulfurized gypsum, 2g of furfural slag, 4g of biomass coke, 4g of weathered coal, 0.08g of urea, and 0.03g of microbial fertilizer.

[0081] 2. Processing method:

[0082] (1) Separately crush the microbial fertilizer with a pulverizer and pass through a 40-mesh sieve;

[0083] (2) Add the pulverized microbial fertilizer and the above-mentioned other raw materials into a mixer and mix them evenly, and then add them into a disc granulator for granulation to obtain a granular alkaline soil amendment.

[0084] 3. Improvement process (application of soil conditioner):

[0085] (1) The improved land shall be rough leveled first to remove the obvious concave and convex areas on the land;

[0086] (2) Carry out laser leveling, so that the slope of the farming block is 0.05%;

[0087] (3) The above-mentioned improvers are mixed and evenly applied to the soil surface (the depth of application is 40cm of the cultivated layer), and the amount per unit area...

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Abstract

The invention relates to a soil improvement agent and a processing method thereof. The soil improvement agent comprises the following raw materials in parts by weight: 60-95 parts of desulfurized waste, 0.5-2.0 parts of inorganic accelerator, and 0.5-30 parts of organic accelerator. The soil improvement agent provided by the invention has the beneficial effects that calcium ions in the desulfurized waste are used to replace exchangeable sodium on the soil colloid, thus reducing the alkalization degree of the soil; at the same time, the excellent pore structure and physical property of the organic accelerator are used to improve the physical property of the soil and the granular structure of the soil, reduce the pH value of the soil, and improve the soil fertility; the inorganic accelerator can also improve the granular structure of the soil; in addition, with auxiliary inorganic fertilizer and organic fertilizer, the soil fertility of the soil can be further improved so as to provide nutrient contents for plant growth. To sum up, by adopting the scheme in the invention, unbalance of nutritive elements in the soil can be effectively overcome, the land capability is improved, the soil is loosened, and the fertilizer efficiency is increased, so that the soil salinization phenomenon is fundamentally harnessed step by step.

Description

technical field [0001] The invention relates to a chemical reagent used on soil, in particular to a soil conditioner and a processing method thereof, belonging to the field of soil improvement. Background technique [0002] Domestic soil improvement, especially the methods and technologies of saline-alkali land improvement can be summarized as follows: (1) Physical improvement: leveling the land, deep plowing and sunning, loosening the soil in time, raising the terrain, and micro-area improvement of the soil; (2) Water conservancy improvement: irrigation (3) Chemical improvement: application of gypsum, phosphogypsum, superphosphate, humic acid, peat, vinegar residue, etc.; (4) Biological improvement: planting rice , planting salt-tolerant plants, such as tianjing, or using micro-bacterial fertilizers, etc. [0003] These improved technologies and methods include ancient technologies, such as leveling the land, deep plowing and drying, loosening the soil in time, micro-area ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40C01F11/46C09K101/00C09K109/00
Inventor 陈昌和刘嘉李彦王淑娟陈群赵博禚玉群
Owner TSINGHUA UNIV
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