Use of mild alkali-affected soil conditioner

A soil conditioner, mild technology, applied in application, soil conditioning materials, other chemical processes, etc., can solve the problems of excessive heavy metals and harmful trace elements, high cost of soil improvement for farmers, and unsatisfactory effects, etc., to overcome nutritional problems Effects of element imbalance, improvement of soil fertility, and lowering of pH

Active Publication Date: 2013-03-27
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 chemica

Method used

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  • Use of mild alkali-affected soil conditioner
  • Use of mild alkali-affected soil conditioner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] 1. Improver: 80g of desulfurized gypsum, 10g of straw, 5g of biomass coke, 5g of weathered coal, 0.05g of urea, and 0.01g of microbial fertilizer.

[0058] 2. Processing method:

[0059] (1) Separately crush the straw and microbial fertilizer with a pulverizer, and pass through a 60-mesh sieve;

[0060] (2) Add the crushed straw, 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 mildly alkalized soil conditioner.

[0061] 3. Improvement process (application of soil conditioner):

[0062] (1) The improved land shall be rough leveled first to remove the obvious concave and convex areas on the land;

[0063] (2) Carry out laser leveling, so that the slope of the farming block is 0.05%;

[0064] (3) The above-mentioned improvers are mixed and evenly applied to the soil surface (the depth of application is 20cm in the depth of the cultivated layer...

Embodiment 2

[0068] 1. Improver: 70g desulfurized gypsum, 5g straw, 10g biomass coke, 10g weathered coal, 0.1g urea, 0.05g microbial fertilizer.

[0069] 2. Processing method:

[0070] (1) Separately crush the straw and microbial fertilizer with a pulverizer, and pass through a 30-mesh sieve;

[0071] (2) Add the crushed straw, 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 mildly alkalized soil conditioner.

[0072] 3. Improvement process (application of soil conditioner):

[0073] (1) The improved land shall be rough leveled first to remove the obvious concave and convex areas on the land;

[0074] (2) Carry out laser leveling, so that the slope of the farming block is 0.05%;

[0075] (3) The above-mentioned improvers are mixed and evenly applied to the soil surface (the depth of application is 20cm in the depth of the cultivated layer), and the amount per ...

Embodiment 3

[0079] 1. Improver: 75g of desulfurized gypsum, 8g of straw, 8g of biomass coke, 8.5g of weathered coal, 0.08g of urea, and 0.03g of microbial fertilizer.

[0080] 2. Processing method:

[0081] (1) Separately crush the straw and microbial fertilizer with a pulverizer, and pass through a 40-mesh sieve;

[0082] (2) Add the crushed straw, 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 mildly alkalized soil conditioner.

[0083] 3. Improvement process (application of soil conditioner):

[0084] (1) The improved land shall be rough leveled first to remove the obvious concave and convex areas on the land;

[0085] (2) Carry out laser leveling, so that the slope of the farming block is 0.05%;

[0086] (3) The above-mentioned improvers are mixed and evenly applied to the soil surface (the depth of application is 18cm of the cultivated layer), and the a...

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Abstract

The invention relates to use of mild alkali-affected soil conditioner in the aspect of improving soil. The mild alkali-affected soil conditioner comprises the following raw materials, by weight, 70-80 parts of desulfuration waste, 5-10 parts of inorganic accelerator and 10-20 parts of organic accelerator. The mild alkali-affected soil conditioner uses calcium ions in the desulfuration waste to substitute exchangeable sodium so as to reduce alkalization degree of the soil. Simultaneously, by means of a good pore structure and physical performance of the organic accelerator, a physical behavior of the soil and a granular structure of the soil are improved, a pH value of the soil is reduced, and soil fertility is improved. The inorganic accelerator can also improve the granular structure of the soil. The soil fertility can be further improved by combining inorganic fertilizer and organic fertilizer, and nutritious ingredients are provided for crop growth. The mild alkali-affected soil conditioner can effectively overcome the defect of unbalanced nutritious elements in the soil, improves soil fertility, loosens the soil, improves fertilizer efficiency, and enables a soil salinization phenomenon to be avoided fundamentally.

Description

technical field [0001] The invention relates to a chemical reagent used on soil, in particular to a mild alkalized soil improver and its processing method, and the application of the mildly alkalized soil improver, 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,...

Claims

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Application Information

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IPC IPC(8): C09K17/48C09K109/00
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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