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Saline and alkaline land improvement method

A saline-alkali land modification technology, which is applied in the direction of soil preparation, nitrate fertilizer, application, etc., can solve the problems such as poor improvement effect of saline-alkali land, and achieve the effect of preventing secondary salinization of soil, maintaining water and soil, and restoring vegetation

Inactive Publication Date: 2020-05-01
WEIFANG YOURONG IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are roughly five methods of improving saline-alkali land at home and abroad: physical, chemical, biological, agricultural and water conservancy improvement. Each measure has its own advantages and disadvantages, and the improvement effect on saline-alkali land is not good

Method used

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  • Saline and alkaline land improvement method
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Examples

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Effect test

Embodiment 1

[0029] A method for improving saline-alkali land, comprising the following steps:

[0030] (1) Dissolve cellulose acetate in a mixed solvent composed of ethyl acetate and ethanol to obtain a mixed solution with a concentration of 0.08g / ml; mix 2g methylcellulose, 2.2g sodium citrate, 2ml span80, 18ml acetic acid Ethyl ester and 480ml of deionized water were mixed and stirred evenly to obtain a dispersion; the mixed solution was added dropwise to the dispersion, stirred while adding, and continued to stir and mix after the dropwise addition to obtain a suspension; the mixed solution was The volume ratio of the dispersion to the dispersion is 1:2; the suspension is stirred, evaporated and concentrated at 60°C; finally the obtained concentrate is filtered; the filtered solid is washed with deionized water and absolute ethanol in sequence, Finally dry to make cellulose acetate microspheres;

[0031] (2) Mix sodium alginate and deionized water to prepare a sodium alginate solution...

Embodiment 2

[0037] A method for improving saline-alkali land, comprising the following steps:

[0038] (1) Dissolve cellulose acetate in a mixed solvent composed of ethyl acetate and ethanol to obtain a mixed solution with a concentration of 0.08g / ml; mix 2.5g methylcellulose, 2.6g sodium citrate, 2ml span80, 48ml Ethyl acetate and 450ml of deionized water were mixed and stirred evenly to obtain a dispersion; the mixed solution was added dropwise to the dispersion, and stirred while adding dropwise, and continued to stir and mix after the dropwise addition to obtain a suspension; The volume ratio of the solution and the dispersion is 1:3; the suspension is stirred, evaporated and concentrated at 70°C; finally, the obtained concentrated solution is filtered; the filtered solid is washed with deionized water and absolute ethanol in sequence , and finally dried to obtain cellulose acetate microspheres;

[0039] (2) Mix sodium alginate and deionized water to prepare a sodium alginate solutio...

Embodiment 3

[0045] A method for improving saline-alkali land, comprising the following steps:

[0046] (1) Dissolve cellulose acetate in a mixed solvent composed of ethyl acetate and ethanol to obtain a mixed solution with a concentration of 0.09g / ml; mix 2.1g methylcellulose, 2.3g sodium citrate, 2ml span80, 28ml Ethyl acetate and 470ml of deionized water were mixed and stirred evenly to obtain a dispersion; the mixed solution was added dropwise to the dispersion, and stirred while adding, and continued to stir and mix after the addition was completed to obtain a suspension; The volume ratio of the solution to the dispersion is 1:2.2; the suspension is stirred, evaporated and concentrated at 65°C; finally, the obtained concentrated solution is filtered; the filtered solid is washed with deionized water and absolute ethanol in sequence , and finally dried to obtain cellulose acetate microspheres;

[0047] (2) Sodium alginate and deionized water are mixed to obtain a sodium alginate solut...

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Abstract

The invention discloses a saline and alkaline land improvement method. The improvement method comprises the following steps: crushing plant straw to prepare plant straw powder, then, scattering the plant straw powder into saline and alkaline land, and carrying deep ploughing and turning; applying a mixture consisting of soybean meal, furfural residues, activated biochar powder, a microbial agent,inorganic fertilizer, natural zeolite powder, mineral-sourced humic acid and modified calcium alginate aerogel to the surface layer of the saline and alkaline land, and using a rotary cultivator for rotary cultivation and mixing; flattening the soil surface layer of the saline and alkaline land, uniformly sowing alfalfa seeds on the flattened saline and alkaline land, then, performing earthing up,and controlling the sowing depth at 1-2 cm; during harvesting, keeping the stubble height of alfalfa at 5.5-7.5 cm; carrying out deep ploughing, turning and burying on the saline and alkaline land toturn and bury the alfalfa stubbles in the soil; and then, planting wheat or corn crops. The method can effectively reduce the soil alkalization degree and salt content, and the physiochemical properties of the soil are effectively improved.

Description

technical field [0001] The invention relates to the technical field of saline-alkali land improvement, in particular to a saline-alkali land improvement method. Background technique [0002] my country's coastal areas are extremely rich in land resources, and a large number of coastal saline-alkali lands and tidal flats are not only the main source of expanding arable land in coastal areas, but also one of the important bases for developing agricultural production. However, due to the incomplete development of coastal saline-alkali soil, shallow soil layer, low organic matter content and high content of basic ions, agricultural production cannot be carried out. Therefore, the improvement of coastal saline-alkali soil has great practical significance for regional ecological restoration and reconstruction, as well as the stability and development of local economy. [0003] For a long time, researchers at home and abroad have been committed to conducting in-depth research on t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/02C05G3/80
CPCA01B79/02C05B1/02C05C5/02C05C9/00
Inventor 王胜高悦文毛庆莲江杰
Owner WEIFANG YOURONG IND
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