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A compound preparation for repairing and improving soil structure and its preparation method

A compound preparation and soil improvement technology, applied in the agricultural field, can solve the problems of slow improvement speed, inability to quickly improve high pH value and high alkalinity soil, etc., and achieve small secondary damage, pH value and replacement of sodium ions. The effect of content reduction and soil bulk density reduction

Active Publication Date: 2019-03-29
SHANDONG JIELIER FERTILIZER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the improvement speed of this technology is slow, and it is more suitable for mild sodium alkalization soil, and cannot quickly improve soil with high pH value and high alkalization degree.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The spent catalytic cracking catalyst was calcined at 700°C for 1 hour; the calcined catalyst was crushed to 20 meshes; aluminum sol with 10% mass of spent zeolite was added and stirred and heated to 120°C for crystallization for 5 hours; calcined at 300°C for 6 hours to obtain the modified Sexual spent zeolite

[0021] The composite preparation for repairing and improving soil structure includes 20 parts of modified waste zeolite, 30 parts of humic acid, 15 parts of calcium persulfate and 10 parts of gypsum.

[0022] The compound preparation for repairing and improving soil structure is applied to the saline-alkali land at a rate of 100 kg per mu, and properly irrigated. After 30 days, the pH value of the land dropped from 9.6 to 8.8, after 100 days, it dropped to 8.2, and after 1 year, it dropped to 7.5.

Embodiment 2

[0024] Preparation of modified spent zeolite: The spent catalytic cracking catalyst was calcined at 1000°C for 1-3h; the calcined catalyst was crushed to 40 mesh; aluminum sol with 15% mass of the spent zeolite was added and stirred and heated to 100°C for 10h; crystallized at 600°C Calcining at °C for 3 hours to obtain the modified spent zeolite, immersing the modified spent zeolite in a phosphoric acid solution with a pH value of 3 for 3 days, filtering and drying to obtain the modified spent zeolite loaded with acid.

[0025] A compound preparation for repairing and improving soil structure, including 30 parts of acid-loaded modified spent zeolite, 40 parts of humic acid, 10 parts of calcium persulfate, and 5 parts of gypsum

[0026] The compound preparation for repairing and improving the soil structure is applied to the saline-alkali land in a certain place according to the ratio of 150kg per mu of land, and is properly irrigated. After 30 days, the pH value of the land d...

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PUM

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Abstract

A soil structure remediating and improving compound preparation comprises 20-30 parts of modified waste zeolite, 30-50 parts of humic acid, 10-20 parts of calcium persulfate and 5-10 parts of gypsum, wherein the modified waste zeolite is obtained by calcining and smashing a waste catalytic cracking catalyst and performing acid loading. The soil improving compound preparation is prepared from industrial waste, is low in cost and can be used on a large scale; the compound preparation is small in dosage, small in secondary damage to soil and long-lasting in improvement of the soil; after application of the soil improving compound preparation, soil pH and exchangeable sodium ion content are significantly reduced, the total weight of soil aggregates is increased, and the soil bulk density is reduced.

Description

technical field [0001] The invention belongs to the field of agriculture, and in particular relates to a compound preparation for improving the soil structure of saline-alkali land and a preparation method. Background technique [0002] Saline-alkali soil, also called saline soil, refers to the land containing excessive soluble salts in the soil, including two types of soil with different properties: saline soil and alkaline soil. The so-called saline soil mainly refers to the soil containing excessive water-soluble salt, which is mostly neutral salt, showing alkaline reaction, and the pH value is between 7-8. The so-called alkaline soil mainly refers to the water-soluble alkaline salt in the soil, showing a strong alkaline reaction, and the pH value is above 8.5. Due to the high salinity and high alkalinity of the salinized soil, the soil humus is leached and the soil structure is damaged. It is sticky when wet and hard when dry. There are often white salt deposits on the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K17/40C09K101/00C09K109/00
CPCC09K17/40C09K2101/00C09K2109/00
Inventor 付瑞军付长征
Owner SHANDONG JIELIER FERTILIZER CO LTD
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