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Saline-alkalized grassland treatment method

A salinization and grassland technology, which is applied in the direction of soil preparation methods, chemical instruments and methods, and other chemical processes, can solve problems such as recurrence, short duration, and inability to completely remove salinity, so as to increase nutrients and maintain efficacy The effect of long-term, not easy to relapse of salinization

Inactive Publication Date: 2017-12-01
吴刚
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention: Aiming at the problem that the traditional method for improving saline-alkali land has a short duration, cannot completely remove saline-alkali, and has recurrence, a method for treating saline-alkali grassland is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0022] Preparation of improver: According to the mass ratio of 1:2, take wheat straw and rice straw and put them into a straw grinder, grind them at 3600r / min, collect the grinds, put them into a mixer, and grind them at 150r / min Stir, add water to the mixer until the water content of the pulverized material is 15-20%, then add sodium bicarbonate with a mass of 6-9% of the pulverized material into the mixer, stir for 5-10 minutes, put the material in the mixer into the press In the process, extrude at 20MPa for 15-20min, collect the extrudate, put the extrudate into a tubular carbonization furnace, use nitrogen protection, raise the temperature to 135-150°C at 6°C / min, keep it warm for 1-2h, and Raise the temperature at 8°C / min to 400-430°C, keep it warm for 2-4 hours, then cool it down to 210-230°C at 3°C / min, keep it warm for 30-35 minutes, then cool down to room temperature naturally, collect the carbonized material, and put the carbonized material into the pulverizer Pulve...

example 1

[0025] Preparation of improver: According to the mass ratio of 1:2, take wheat straw and rice straw and put them into a straw grinder, grind them at 3600r / min, collect the grinds, put them into a mixer, and grind them at 150r / min Stir, add water to the mixer until the water content of the pulverized material is 20%, then add sodium bicarbonate with a mass of 9% of the pulverized material to the mixer, stir for 10 minutes, put the material in the mixer into a press, and squeeze it at 20MPa 20min, collect the extrudate, put the extrudate into a tubular carbonization furnace, use nitrogen protection, raise the temperature to 150°C at 6°C / min, keep it for 2h, raise the temperature to 430°C at 8°C / min, keep it for 4h, Then cool down to 230°C at 3°C / min, keep it warm for 35min, then cool naturally to room temperature, collect carbonized matter, put the carbonized matter into a pulverizer for crushing, and pass through a 100-mesh sieve to collect sieved particles; calculated in parts ...

example 2

[0029]Preparation of improver: According to the mass ratio of 1:2, take wheat straw and rice straw and put them into a straw grinder, grind them at 3600r / min, collect the grinds, put them into a mixer, and grind them at 150r / min Stir, add water to the mixer until the water content of the pulverized material is 15%, then add sodium bicarbonate with 6% mass of the pulverized material to the mixer, stir for 5 minutes, put the material in the mixer into a press, and squeeze it at 20MPa 15min, collect the extrudate, put the extrudate into a tubular carbonization furnace, use nitrogen protection, raise the temperature to 135°C at 6°C / min, keep it for 1h, raise the temperature to 400°C at 8°C / min, and keep it for 2h, Then cool down to 210°C at 3°C / min, keep it warm for 30min, then cool naturally to room temperature, collect carbonized matter, put the carbonized matter into a pulverizer for crushing, and pass through a 100-mesh sieve to collect sieved particles; calculated in parts by ...

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Abstract

The invention relates to a saline-alkalized grassland treatment method, and belongs to the technical field of soil improvement. According to the method, smashed straw is stirred and mixed with water and sodium bicarbonate for squeezing and carbonization; carbide is mixed with digested sludge and rural soil after being smashed and sieved to obtain a mixture; fermentation is conducted on the mixture, and a fermentation product is collected; after ploughing and airing are conducted on a saline-alkalized grassland, the fermentation product is placed on the ploughed bottom; after second ploughing and irrigation are conducted, ploughing and placing of the fermentation product are continued, and after second ploughing, treatment is repeated once again, so that treatment of the saline-alkalized grassland is achieved. By means of the method, the phenomenon of the salinization and alkalinization recurrence is not prone to happen on the treated saline-alkalized grassland, and the lasting period is long; the treatment effect for the saline-alkalized grassland is good, growth of plant root systems is promoted, the vegetation coverage is improved, and the method has wide application prospects.

Description

technical field [0001] The invention relates to a treatment method for saline-alkali grassland, which belongs to the technical field of soil improvement. Background technique [0002] Soil salinization refers to the process in which the salt in the bottom soil or groundwater rises to the surface with the capillary water, and after the water evaporates, the salt accumulates in the surface soil. From a worldwide perspective, salinization is one of the most important factors limiting crop yields. The area of ​​salinization in the world has exceeded 1 billion hectares, accounting for a quarter of the land area of ​​cultivated land. China's saline-alkali soil is widely distributed, with a large area and many types, with a total area of ​​about 100 million hectares. Especially in recent years, due to the dual impact of land overuse and global change, soil salinization tends to increase and expand. In some areas, soil salinization seriously limits the development of agriculture a...

Claims

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Application Information

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IPC IPC(8): A01B79/00A01B79/02C09K17/40C09K101/00C09K109/00
CPCA01B79/00A01B79/02C09K17/40C09K2101/00C09K2109/00
Inventor 吴刚薛洋宋昊
Owner 吴刚
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