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Saline-alkali soil improvement agent and preparation method and application thereof

A technology of improver and saline-alkali land, which is applied in the preparation of saline-alkali land improver and its preparation field by using phosphogypsum, can solve the problems of inability to be popularized in a large area, high cost, complicated production process, etc., and achieve suitable crop growth, low cost, and improved The effect of soil salinity drainage rate

Inactive Publication Date: 2015-12-09
GUIZHOU KAILIN GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these improvers have a certain effect on improving saline-alkali soil, they cannot be popularized on a large scale due to limitations such as complex production processes, high costs and other conditions.

Method used

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  • Saline-alkali soil improvement agent and preparation method and application thereof
  • Saline-alkali soil improvement agent and preparation method and application thereof
  • Saline-alkali soil improvement agent and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1: Preparation of composite improver of the present invention

[0039](1) Cut the picked wormwood plant into 2-4cm long, put it into the fermentation tank, put the soaking liquid inoculated with cellulolytic enzymes into the pool for retting, submerge in the soaking liquid, stir once every 4 days, after 30 days , clearing out the wormwood plants, drying them in the sun, and crushing them to obtain fermented wormwood plants for later use;

[0040] (2) Phosphogypsum is pulverized to a particle size of less than 1 mm, and set aside;

[0041] (3) By fermented wormwood plant: phosphogypsum after pulverizing: urea: fulvic acid=30%: 40%: 15%: 15% mixed, and add 20% water of mixed material and mix evenly, after mixing Carry out granulation with a granulator, dry until the water content of the material is 8%, and then sieve to obtain finished granules with a particle size of 5-8 mm, which is the prepared improver of the present invention.

Embodiment 2

[0042] Embodiment 2: the preparation of composite improver of the present invention

[0043] (1) Cut the picked wormwood plant into 2-4cm long, put it into the fermentation tank, put the soaking liquid inoculated with cellulolytic enzymes into the pool for retting, soak the soaking liquid, stir once every 4 days, after 35 days , clearing out the wormwood plants, drying them in the sun, and crushing them to obtain fermented wormwood plants for later use;

[0044] (2) Phosphogypsum is pulverized to a particle size of less than 1 mm, and set aside;

[0045] (3) mix by fermented wormwood plant: phosphogypsum after pulverizing: urea: fulvic acid=35%: 45%: 10%: 10%, and add 25% water of mixed material weight to mix evenly, mix Then granulate with a granulator, dry until the water content of the material is 5%, and then sieve to obtain finished granules with a particle size of 5-8mm, which is the improved agent of the present invention.

Embodiment 3

[0046] Embodiment 3: the preparation of composite improver of the present invention

[0047] (1) Cut the picked wormwood plant into 2-4cm long, put it into the fermentation tank, put the soaking liquid inoculated with cellulolytic enzymes into the pool for stack retting, soak the soaking liquid, stir once every 4 days, after 40 days , clearing out the wormwood plants, drying them in the sun, and crushing them to obtain fermented wormwood plants for later use;

[0048] (2) Phosphogypsum is pulverized to a particle size of less than 1 mm, and set aside;

[0049] (3) mix by fermented wormwood plant: pulverized phosphogypsum: urea: fulvic acid=40%: 50%: 5%: 5%, and add 30% water of mixed material weight to mix evenly, mix Finally, carry out granulation with a granulator, dry until the water content of the material is 3%, and then sieve to obtain finished granules with a particle size of 5-8 mm, which is the prepared improver of the present invention.

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Abstract

The invention provides a saline-alkali soil improvement agent and a preparation method and application thereof. The saline-alkali soil improvement agent is prepared from a fermented wormwood plant, ardealite, urea and fulvic acid, contains a large amount of organic matter and acid radical ions, can effectively neutralize alkaline matter of saline-alkali soil, is suitable for moderate-severe saline-alkali soil high in soil salinity and pH value, good in calcareous property, poor in physical structure and the like, can quickly improve the saline-alkali soil, is suitable for crop growth and can improve the fertilizer conservation and water retaining capacity of the soil after being used for a long period of time. The preparation method and the ingredients of the improvement agent are simple, the production cost is low, the saline-alkali soil improvement agent is obtained by mainly adopting industrial and agricultural waste and utilizing physical, chemical and biochemical principles through optimum disposition, is wide in application range and is suitable for improvement of salinized and alkalized soil caused by different reasons in different regions. After the saline-alkali soil improvement agent is reasonably applied to the soil, the fertility of the soil can be improved, a soil structure can be improved, the soil alkalinity can be neutralized, the salt elimination rate of the soil can be improved, growth of crops can be further promoted, and the agricultural economic benefits can be improved.

Description

technical field [0001] The invention relates to the technical field of saline-alkali soil modifiers, in particular to a saline-alkali soil modifier prepared by using phosphogypsum and a preparation method thereof. Background technique [0002] With the rapid increase of population and the deteriorating climate conditions, the salinization of land is a worldwide ecological problem. An important limiting factor for the sustainable development of world agriculture. my country's salinized cultivated land area is about 34.67 million hm2 (520 million mu), ranking fourth in the world, second only to Australia, Mexico, and Argentina. my country's saline-alkali land is mainly distributed in 17 provinces including northeast, north, northwest and coastal areas. In order to ensure the safety of food production in our country, improve the ecological environment, and realize the sustainable utilization of resources, it is imminent to accelerate the development of saline-alkali land impr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40C09K101/00C09K109/00
Inventor 魏发展廖吉星孙志梅朱飞武项双龙王先炜
Owner GUIZHOU KAILIN GRP CO LTD
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