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Method for improving slight saline-alkali land

A saline-alkali soil, mild technology, applied in chemical instruments and methods, fertilizers made from biological waste, applications, etc., can solve the problems of insufficient utilization of straw charcoal, low organic content of fertilizers, insufficient exchange volume, etc., to improve fertilizer conservation. Water retention capacity and permeability, improvement of soil structure, effect of increasing porosity and specific surface area

Inactive Publication Date: 2018-10-12
上海金禾天地信息科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problems solved by the present invention: overcome the shortage of exchange capacity and short time limit in the prior art when calcium ions are exchanged for sodium ions in soil; insufficient utilization of straw charcoal; low organic matter content, weak fertilizer efficiency, and poor water retention in fertilizers for improving saline-alkali land. high acidity issues

Method used

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  • Method for improving slight saline-alkali land
  • Method for improving slight saline-alkali land
  • Method for improving slight saline-alkali land

Examples

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Effect test

Embodiment 1

[0024] A special soil improver for mild saline-alkali land, characterized in that the improver consists of 40 parts of straw charcoal, 30 parts of cow dung, 20 parts of bone meal, 30 parts of vinegar residue, 20 parts of humic acid, 0.05 parts of probiotics, It is prepared from 15 parts of sodium polyacrylate, 20 parts of water-soluble potassium fertilizer, 20 parts of desulfurized gypsum, 0.01 part of trace elements, and an appropriate amount of water. The specific preparation includes the following steps:

[0025] a. Straw charcoal preparation: the straw is first carbonized at 220°C for 0.5h, then rapidly heated to 300°C for 1h, and then crushed into 2mm particles for later use;

[0026] b Mix 30 parts of cow dung, 20 parts of bone meal, 30 parts of vinegar residue, and 20 parts of humic acid, adjust the moisture content to 25%, add 0.05 parts of probiotics, ferment at 37°C for 26 hours, then cool down naturally and continue to ferment to room temperature, Dry until the wate...

Embodiment 2

[0030] A special soil improver for mild saline-alkali land, characterized in that the improver consists of 50 parts of straw charcoal, 40 parts of cow dung, 23 parts of bone meal, 32 parts of vinegar residue, 23 parts of humic acid, 0.08 parts of probiotics, It is prepared from 18 parts of sodium polyacrylate, 23 parts of water-soluble potassium fertilizer, 23 parts of desulfurized gypsum, 0.2 parts of trace elements, and an appropriate amount of water. The specific preparation includes the following steps:

[0031] a. Straw charcoal preparation: the straw is first carbonized at 225°C for 0.8h, then rapidly heated to 308°C for 1.2h, and then crushed into 2.5mm particles for later use;

[0032] b Mix 40 parts of cow dung, 22 parts of bone meal, 33 parts of vinegar residue, and 22 parts of humic acid, adjust the moisture content to 28%, add 0.08 parts of probiotics, ferment at 42°C for 35 hours, then cool down naturally and continue to ferment to room temperature, Dry until the ...

Embodiment 3

[0036] A special soil improver for mild saline-alkali land, characterized in that the improver consists of 60 parts of straw charcoal, 50 parts of cow dung, 25 parts of bone meal, 35 parts of vinegar residue, 25 parts of humic acid, 0.1 part of probiotics, It is prepared from 20 parts of sodium polyacrylate, 25 parts of water-soluble potassium fertilizer, 26 parts of desulfurized gypsum, 0.5 parts of trace elements, and an appropriate amount of water. The specific preparation includes the following steps:

[0037] a. Straw charcoal preparation: the straw is first carbonized at 230°C for 1 hour, then rapidly heated to 310°C for 1.5 hours, and then crushed into 3mm particles for later use;

[0038] b Mix 50 parts of cow dung, 25 parts of bone meal, 35 parts of vinegar residue, and 25 parts of humic acid, adjust the water content to 30%, add 0.1 part of probiotics, ferment at 45°C for 46 hours, then cool down naturally and continue to ferment to room temperature, Dry until the wate...

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Abstract

The invention relates to a method for improving a slight saline-alkali land. A special soil conditioner for the saline-alkali land is provided, a singular carbonization treatment mode in the prior artis changed, and simple two-phase carbonization treatment is performed on straw, so that the own alkalinity of biochar is reduced, the advantages of increase of porosity and specific surface area of the biochar are highlighted, microbial reproduction and growth are facilitated, reduction of the soil bulk density and increase of the exchange capacity of calcium and sodium ions in soil are achieved,and the problem of hardening of the saline-alkali land is solved effectively. Through participation of bone meal, calcium enrichment can be achieved in microorganisms, and the function of soil remediation is enhanced further by combining water retention and sustained release of sodium polyacrylate; straw carbon particles are not involved in fermentation, and are directly mixed with other raw materials so as to achieve an synergistic technical effect. The pH value of the saline-alkaline soil treated with the soil conditioner can be reduced by 1.5, and the content of soil organic matter can bereduced by 18%.

Description

technical field [0001] The invention belongs to the technical field of soil improvement, and relates to a mild saline-alkali land improvement method, in particular to a special soil improver and its preparation and application method. Background technique [0002] Land salinization has always been the main reason restricting the development of agriculture and the improvement of agricultural comprehensive ability in our country. Saline-alkali land is formed by soil salinization and alkalization. It begins to accumulate in the soil, and the components such as salt and alkali directly participate in the formation of the soil. my country is a big country with saline-alkali land. The area of ​​saline-alkali land in my country is about 500 million mu, and it is widely distributed in coastal areas; saline-alkali land is a reserve land resource with great potential in my country. The control and utilization of saline-alkali land is of great practical significance to our country. [0...

Claims

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Application Information

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IPC IPC(8): C05G3/04C09K17/40C09K101/00C09K109/00C05G3/80
CPCC05B17/00C09K17/40C09K2101/00C09K2109/00C05G3/80C05D1/00C05D3/02C05D9/00C05D9/02C05F3/00C05F5/008C05F11/02C05F11/08
Inventor 不公告发明人
Owner 上海金禾天地信息科技有限公司
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