Method for improving saline and alkaline land by combining chemical and biological improvement with salt-tolerant plant cultivation

A technology of chemical biology and saline-alkali land, which is applied in the field of saline-alkali land improvement combined with chemical-biological improvement and planting salt-tolerant plants, can solve the problems of secondary pollution of saline-alkali soil, weaken the evaporation of soil water, and long improvement cycle, so as to reduce water evaporation , Improve physical and chemical properties, excellent water absorption performance

Active Publication Date: 2019-12-17
WEIFANG YOURONG IND
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  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, there are many ways to improve saline-alkali land, such as planting saline-alkali-tolerant plants on saline-alkali land; Drainage and irrigation systems are established in saline-alkali soil, but the cost is high
The other method is to add chemical amendments to the saline-alkali soil. This method has a fast effect, but it will cause secondary pollution to the saline-alkali soil.
With the strengthening of people's awareness of environmental protection, people have found that the use of bioremediation of saline-alkali soil has the characteristics of low cost and high safety, but this method also has shortcomings such as long improvement period

Method used

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  • Method for improving saline and alkaline land by combining chemical and biological improvement with salt-tolerant plant cultivation

Examples

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Effect test

Embodiment 1

[0025] A method for improving saline-alkali land by combining chemical biological improvement and planting salt-tolerant plants, comprising the following steps:

[0026] (1) Dissolve 0.08mol calcium chloride and 0.04mol aluminum nitrate in 1L deionized water to prepare a mixed solution, and the prepared mixed solution and a concentration of 0.08mol / L sodium hydroxide solution are respectively mixed with 8ml / L, 10ml Add it dropwise to the reactor at a rate of 1 / L. After the dropwise addition, stir the reaction at 40°C and 1500r / min for 30 minutes. After the reaction, filter the reaction solution and wash the solid until it is neutral to dry. Hydrotalcite-like nanosheets;

[0027] (2) Place the hydrotalcite-like nanosheets prepared above in a silk fibroin solution with a mass concentration of 3wt%, vacuum impregnate for 30min, and then place them in a 60°C oven for drying treatment to obtain a silk fibroin-loaded Hydrotalcite-like nanosheets; wherein, the mass ratio of hydrotal...

Embodiment 2

[0031] A method for improving saline-alkali land by combining chemical biological improvement and planting salt-tolerant plants, comprising the following steps:

[0032] (1) 0.15mol calcium chloride, 0.06mol aluminum nitrate are dissolved in 1L deionized water to make a mixed solution, and the prepared mixed solution and a concentration of 0.12mol / L of sodium hydroxide solution are respectively mixed with 13ml / L, 15ml Add it dropwise to the reactor at a rate of 1 / L. After the dropwise addition, stir the reaction at 60°C and 1500r / min for 70 minutes. After the reaction, filter the reaction solution and wash the solid until it is neutrally dry. Hydrotalcite-like nanosheets;

[0033] (2) Place the hydrotalcite-like nanosheets prepared above in a silk fibroin solution with a mass concentration of 5 wt%, vacuum impregnate for 50 minutes, and then place them in an oven at 80°C for drying treatment to obtain a silk fibroin-loaded Hydrotalcite-like nanosheets; wherein, the mass ratio...

Embodiment 3

[0037] A method for improving saline-alkali land by combining chemical biological improvement and planting salt-tolerant plants, comprising the following steps:

[0038] (1) 0.1mol calcium chloride, 0.045mol aluminum nitrate are dissolved in 1L deionized water to make a mixed solution, and the prepared mixed solution and a concentration of 0.085mol / L of sodium hydroxide solution are respectively mixed with 9ml / L, 11ml Add the dropping speed of / L into the reactor, after the dropping, stir and react at 45°C and 1500r / min for 40min, after the reaction, filter the reaction solution, and wash the filtered solid to neutral dryness, Prepare hydrotalcite-like nanosheets;

[0039] (2) Place the hydrotalcite-like nanosheets prepared above in a silk fibroin solution with a mass concentration of 3.5 wt%, vacuum impregnate for 35 minutes, and then place them in a 65°C oven for drying treatment to obtain a silk fibroin-loaded Hydrotalcite-like nanosheets of protein; wherein, the mass rati...

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Abstract

The invention discloses a method for improving a saline and alkaline land by combining chemical and biological improvement with salt-tolerant plant cultivation. The method specifically comprises the steps that hydrotalcite-like nanosheets are prepared; the hydrotalcite-like nanosheets are placed in a silk fibroin solution for impregnation treatment, then drying is carried out, and the hydrotalcite-like nanosheets loaded with silk fibroin are prepared; the hydrotalcite-like nanosheets loaded with the silk fibroin are mixed with deionized water to prepare a dispersion solution; a mixed emulsionof acrylamide, N,N-methylene bisacrylamide and Tween-80 is added, after mixing is carried out, potassium persulfate is dropwise added for a reaction, after the reaction is completed, cooling is carried out to the room temperature, filtration is carried out, solids are dried, and an inorganic-organic additive is prepared; the prepared inorganic-organic additive is mixed with kaolin, nanometer humicacid and a microbial agent are added, mixing is carried out, and a chemical improver is prepared; the saline and alkaline land is ploughed, the prepared chemical improver is spread in the saline andalkaline land, the land is leveled, salicornia europaea is planted, and subsequent field management is carried out. According to the disclosed method, the chemical and biological improvement method iscombined with the salt-tolerant plant cultivation method, so that the improvement effect is significant.

Description

technical field [0001] The invention relates to the field of saline-alkali land improvement, in particular to a method for improving saline-alkali land by combining chemical and biological improvement with planting salt-tolerant plants. Background technique [0002] In recent years, with the rapid development of my country's society and economy, the process of industrialization and urbanization has been accelerated, and the population has continued to grow. The quantity and quality of my country's cultivated land has continued to decline, and food security is facing a huge risk. Improving saline-alkali land has become the main breakthrough point for increasing the area of ​​cultivated land, improving the quality of cultivated land, and restoring the ecological environment. Saline-alkali land refers to the soil where excessive soluble salts have accumulated in the soil, which inhibits or harms the growth and development of crops. Saline-alkali land includes saline soil and al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/02C09K17/40C09K101/00C09K109/00
CPCA01B79/02C09K17/40C09K2101/00C09K2109/00
Inventor 王胜李炳文高悦文曹林波毛庆莲
Owner WEIFANG YOURONG IND
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