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Technology for improving severe saline-alkali soil to plant trees and application thereof

A technology for severe saline-alkali land and saline-alkali land, applied in the application, soil conditioning materials, land preparation methods, etc., can solve the problems of lack of large-scale promotion, improper use of modifiers, poor improvement of saline-alkali land, etc., to increase soil permeability. , The effect of reasonable ratio and good bonding performance

Inactive Publication Date: 2019-03-22
北京碧青园生态环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The methods of domestic treatment of saline-alkali land mainly include physical improvement, water conservancy improvement, chemical improvement, biological improvement, etc. There are many amendments for chemical improvement, such as gypsum, calcium sulfate, superphosphate, industrial waste phosphogypsum, industrial waste acid, organic fertilizer , humic acid, fly ash, peat, fermented vinegar residue, etc. These improvers have certain effects on the improvement of saline-alkali land. And other problems, resulting in poor improvement effect of saline-alkali land, can not be popularized in a large area

Method used

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  • Technology for improving severe saline-alkali soil to plant trees and application thereof
  • Technology for improving severe saline-alkali soil to plant trees and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] S1 Plow the selected heavily saline-alkali land to a depth of 45-75 cm, and then strip the topsoil.

[0064] S2 After mixing phosphogypsum and boric acid, evenly sprinkle it on the surface of the topsoil, then mix evenly, keep it for 5-20 days, and obtain the first-grade treated soil.

[0065] S3 Add slow-release binder, humic acid, CMC, and zeolite powder to the soil for primary treatment, then mix evenly and keep for 20 to 30 days to obtain improved soil; in the improved soil, the components of the modifier The content is: 44 parts of phosphogypsum, 23.4 parts of boric acid, 14.1 parts of slow-release binder, 8 parts of humic acid, 5.7 parts of CMC, and 5.6 parts of zeolite powder.

[0066] During the same period, saplings with a height of 80 to 120 cm were selected and transplanted to moderately saline-alkali field for hardening to obtain hardened seedlings.

[0067] S4 Dig a ditch on the severe saline-alkali soil stripped of topsoil, the ditch depth is 1.0-1.4m, an...

Embodiment 2

[0071] S1 Plow the selected heavily saline-alkali land to a depth of 45-75 cm, and then strip the topsoil.

[0072] S2 After mixing phosphogypsum and boric acid, evenly sprinkle it on the surface of the topsoil, then mix evenly, keep it for 5-20 days, and obtain the first-grade treated soil.

[0073] S3 Add slow-release binder, humic acid, CMC, and zeolite powder to the soil for primary treatment, then mix evenly and keep for 20 to 30 days to obtain improved soil; in the improved soil, the components of the modifier The content is: 46 parts of phosphogypsum, 24.6 parts of boric acid, 12.3 parts of slow-release binder, 12.6 parts of humic acid, 5 parts of CMC, and 4.2 parts of zeolite powder.

[0074] During the same period, saplings with a height of 80 to 120 cm were selected and transplanted to moderately saline-alkali field for hardening to obtain hardened seedlings.

[0075] S4 Dig a ditch on the severe saline-alkali soil stripped of topsoil, the ditch depth is 1.0-1.4m, a...

Embodiment 3

[0079] S1 Plow the selected heavily saline-alkali land to a depth of 45-75 cm, and then strip the topsoil.

[0080] S2 After mixing phosphogypsum and boric acid, evenly sprinkle it on the surface of the topsoil, then mix evenly, keep it for 5-20 days, and obtain the first-grade treated soil.

[0081] S3 Add slow-release binder, humic acid, CMC, and zeolite powder to the soil for primary treatment, then mix evenly and keep for 20 to 30 days to obtain improved soil; in the improved soil, the components of the modifier The content is: 45 parts of phosphogypsum, 23.8 parts of boric acid, 13.4 parts of slow-release binder, 13.1 parts of humic acid, 6.3 parts of CMC, and 5 parts of zeolite powder.

[0082] During the same period, saplings with a height of 80 to 120 cm were selected and transplanted to moderately saline-alkali field for hardening to obtain hardened seedlings.

[0083] S4 Dig a ditch on the severe saline-alkali soil stripped of topsoil, the ditch depth is 1.0-1.4m, a...

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Abstract

The invention is applicable to the technical field of plant planting in saline-alkali land, and provides a technology for improving severe saline-alkali soil to plant trees and an application thereof.The process includes the following steps: mixing phosphogypsum and boric acid, evenly spreading the mixture on the surface of soil of saline-alkali land, then mixing evenly, and keeping for 5-20 d, to obtain first-stage treated soil; adding a slow-release binder, humic acid, CMC (sodium carboxymethyl cellulose) and zeolite powder into the first-stage treated soil, then mixing evenly, and keepingfor 20-30 d, to obtain improved soil; and applying the improved soil to plant trees. By the way, the method can improve the salt washing speed of the saline-alkali land, increase water permeability ofthe soil and inhibit soil urease activity. After the trees are planted, the survival rate of tree seedlings is 86% or more.

Description

technical field [0001] The invention relates to the technical field of plant planting in saline-alkali land, in particular to a technique and application for improving soil planting in severe saline-alkali land. Background technique [0002] Saline-alkali land is the general term for salt land and alkaline land. Saline soil mainly refers to salinized soil with high chloride or sulfate content. The soil is alkaline, but the pH value is not necessarily high. The main feature of saline-alkali land is that it contains more water-soluble salt or alkaline substances. Due to the high salt content and high alkalinity, the soil humus will be lost and the soil structure will be damaged. It is sticky when wet and hard when dry. There is white salt accumulation, poor ventilation and water permeability, which will cause plant wilting, poisoning and root rot death in serious cases, and plants in severe saline-alkali land areas can hardly survive. The salinization of land has become an e...

Claims

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Application Information

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IPC IPC(8): A01G17/00A01B79/00C09K17/40C09K101/00C09K109/00
CPCA01B79/00A01G17/005C09K17/40C09K2101/00C09K2109/00
Inventor 何华娟薛祥华
Owner 北京碧青园生态环境科技有限公司