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A special soil conditioner for medium and mild saline-alkali land and its preparation method

A soil conditioner and a technology for saline-alkali land, which are applied in the field of a special soil conditioner for medium and mild saline-alkali land and its preparation field, can solve the problems of inability to meet the needs of agricultural planting, single function, and inability to fundamentally change the growing environment of crops.

Active Publication Date: 2022-06-07
HUBEI NEWYANGFENG FERTILIZER STOCK +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the single effect of the conditioner on soil improvement in the existing market, the method of adding organic fertilizer or bacterial fertilizer is mostly used to achieve soil improvement, which cannot fundamentally change the growth environment of crops, resulting in repeated occurrence of saline-alkali, and the effect of improving saline-alkali land is also low. It is not obvious and cannot meet the needs of agricultural planting. The purpose of the present invention is to provide a special soil conditioner for medium and mild saline-alkali land and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A special soil conditioner for mild to moderate saline-alkali land, calculated in parts by weight, comprising the following components:

[0037] 65 parts of modified phosphogypsum powder, 15 parts of sulfur powder, 3 parts of soil humic acid, 4 parts of fulvic acid and 14 parts of calcium lignosulfonate.

[0038] The particle size of the modified phosphogypsum powder is 150-180 μm.

[0039] The preparation method of modified phosphogypsum powder is:

[0040] Step 1, prepare gypsum powder crystal phase transformation product:

[0041]S1. Weigh phosphogypsum powder and place it in a sulfuric acid solution with a mass fraction of 10% to 20%, heat up to 65 to 75°C, stir for 2 to 3 hours, filter and wash the collected solid product with distilled water until the washing liquid is Neutral, and then placed in an oven at 100 ° C to dry to obtain a pre-treatment of phosphogypsum powder; wherein, the mass ratio of phosphogypsum powder and sulfuric acid solution is 1:8;

[0042...

Embodiment 2

[0050] A special soil conditioner for mild to moderate saline-alkali land, calculated in parts by weight, comprising the following components:

[0051] 45 parts of modified phosphogypsum powder, 12 parts of sulfur powder, 1 part of water humic acid, 2 parts of fulvic acid and 10 parts of calcium lignosulfonate.

[0052] The particle size of the modified phosphogypsum powder is 150-180 μm.

[0053] The preparation method of modified phosphogypsum powder is:

[0054] Step 1, prepare gypsum powder crystal phase transformation product:

[0055] S1. Weigh phosphogypsum powder and place it in a sulfuric acid solution with a mass fraction of 10% to 20%, heat up to 65 to 75°C, stir for 2 to 3 hours, filter and wash the collected solid product with distilled water until the washing liquid is Neutral, and then placed in an oven at 100 ° C to dry to obtain a pre-treatment of phosphogypsum powder; wherein, the mass ratio of phosphogypsum powder and sulfuric acid solution is 1:10;

[00...

Embodiment 3

[0064] A special soil conditioner for mild to moderate saline-alkali land, calculated in parts by weight, comprising the following components:

[0065] 78 parts of modified phosphogypsum powder, 18 parts of sulfur powder, 8 parts of mold humic acid, 5 parts of fulvic acid and 20 parts of calcium lignosulfonate.

[0066] The particle size of the modified phosphogypsum powder is 150-180 μm.

[0067] The preparation method of modified phosphogypsum powder is:

[0068] Step 1, prepare gypsum powder crystal phase transformation product:

[0069] S1. Weigh phosphogypsum powder and place it in a sulfuric acid solution with a mass fraction of 10% to 20%, heat up to 65 to 75°C, stir for 2 to 3 hours, filter and wash the collected solid product with distilled water until the washing liquid is Neutral, and then placed in a 100 ℃ oven to dry to obtain a pre-treatment of phosphogypsum powder; wherein, the mass ratio of phosphogypsum powder and sulfuric acid solution is 1:5;

[0070] S2....

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Abstract

The invention relates to a special soil conditioner for medium and mild saline-alkali land and a preparation method thereof, which comprises the following components in parts by weight: 45-78 parts of modified phosphogypsum powder, 12-18 parts of sulfur powder, and 1-8 parts of humic acid 2-5 parts of fulvic acid and 10-20 parts of calcium lignosulfonate. Among them, the short-term strong effect ingredients include sulfur powder, which can reduce the pH of the soil. The sulfur bacteria in the soil can further reduce the soil alkalinity by decomposing sulfur into sulfuric acid, and continuously adjust the acidity. Calcium lignosulfonate can combine a large amount of humic acid and fulvic acid, which can promote root growth and improve nutrient absorption efficiency; at the same time, calcium lignosulfonate is also conducive to fertilizer granulation, and promotes disintegration after dissolving in water. Long-term slow-release ingredients include modified phosphogypsum powder, which can be used as a slow-release carrier to gradually reduce the pH and alkalinity of the soil, thereby slowly improving the salinity of the soil.

Description

technical field [0001] The invention relates to the field of soil chemical fertilizers, in particular to a special soil conditioner for mildly saline-alkali land and a preparation method thereof. Background technique [0002] Saline-alkaline soil is a general term for various types of salinized soils and alkaline soils. Saline-alkali land is one of the severe ecological and environmental problems faced by global agriculture today, which has a serious impact on the sustainable development of agriculture. How to properly solve the problem of soil salinization is an arduous task. Because the soil contains a lot of saline-alkali components and has poor physical and chemical properties, the growth of plants is inhibited or even unable to grow. Since most of the soluble salts in the saline-alkali soil are sodium salts, the soil is sticky, the soil colloid is dispersed and emulsified, the aeration is poor, the water is swollen and muddy, and the water loss shrinks and hard, which ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K17/40C05G3/00C05G3/40C05G3/80C05G5/12C05G5/30
CPCC09K17/40C05G3/00C05G3/40C05G3/80C05G5/12C05G5/30C05D9/00C09K2101/00C05F11/00C05F11/02
Inventor 高璐阳陈宏坤郭武松房福力武良
Owner HUBEI NEWYANGFENG FERTILIZER STOCK