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Method for planting suaeda salsa in medium-low-chromium-content saline-alkali lands and extracting plant salt

A technology of Suaeda salsa and saline-alkali land, which is applied in the field of plant salt extraction, and can solve problems such as inability to sell and eat plant salt, high chromium content in plant salt, and chromium pollution

Inactive Publication Date: 2015-10-07
WEIFANG YOURONG IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the saline-alkali land in many areas has different levels of chromium pollution
Planting Suaeda salsa from medium-low chromium saline-alkali land and extracting plant salt from it, the chromium content of the obtained plant salt is very high, which cannot be sold and eaten as qualified plant salt

Method used

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  • Method for planting suaeda salsa in medium-low-chromium-content saline-alkali lands and extracting plant salt
  • Method for planting suaeda salsa in medium-low-chromium-content saline-alkali lands and extracting plant salt
  • Method for planting suaeda salsa in medium-low-chromium-content saline-alkali lands and extracting plant salt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1 A method for planting Suaeda salsa in medium-low chromium saline-alkali land and extracting plant salt

[0037] Step 1. Selection of saline-alkali land

[0038] In coastal salinized soil plots, the salt content of the 0-40cm soil layer is 1.0-1.4%, the pH is 7.8-8.2, and the chromium content is 280-300mg / kg.

[0039] Step 2. Improve the soil

[0040] The year before Suaeda salsa was planted, in spring, evenly sprinkle 180kg / mu of soil improver on the selected land, plow 0.4m deep, rake level, and water once.

[0041] The soil improver includes the following components in parts by weight: 8 parts of aluminum sulfate, 14 parts of cottonseed hulls, 19 parts of biochar, 12 parts of desulfurized gypsum, 14 parts of seaweed powder, 10 parts of water-retaining agent, and 13 parts of alfalfa powder.

[0042] Step 3. Plant Lishihe and Commelina

[0043] (1) Ditch regulation. After plowing and raking the land, adjust the planting furrows, each of which is 30-40cm w...

Embodiment 2

[0066] Example 2 A method for planting Suaeda salsa in medium-low chromium saline-alkali land and extracting plant salt

[0067] Step 1. Selection of saline-alkali land

[0068] Step 2. Improve the soil

[0069] The above-mentioned steps are operated according to the method of Example 1, and the parameters changed are shown in Table 1:

[0070] Table 1

[0071]

[0072] Step 3. Plant Lishihe and Commelina

[0073] According to the method of embodiment 1, Lishihe and Commelina chinensis are planted, and the parameters changed are shown in Table 2:

[0074] Table 2

[0075]

[0076] Step 4, heavy metal detection. With flame atomic absorption spectrophotometry, the chromium content detection is carried out to the soil after 1 year of planting Lishihe and Commelina chinensis of embodiment 1-6, and the detection results are shown in Table 3:

[0077] The soil chromium content after 1 year of planting Lishihe and Commelina chinensis of table 3 embodiment 1-6

[0078...

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Abstract

The invention provides a method for planting suaeda salsa in medium-low-chromium-content saline-alkali lands and extracting plant salt. The method includes selecting the saline-alkali lands; improving soil; planting leersia hexandra and dayflower; planting the suaeda salsa; extracting the plant salt. The leersia hexandra and the dayflower are planted in an interplantation manner, the interplantation proportion of the leersia hexandra to the dayflower is 4:3, and the planting density is 30cm*30cm. The method has the advantages that the content of chromium in the plant salt prepared by the aid of the method is 0.18-0.28mg / Kg; the content of sodium chloride in the plant salt prepared by the aid of the method is 31.2-34.8%; the content of amino acid in the plant salt prepared by the aid of the method is 15.6-21.6%.

Description

technical field [0001] The invention relates to a method for extracting plant salt, in particular to a method for planting Suaeda salsa in medium-low chromium saline-alkali land and extracting plant salt, which belongs to the field of saline-alkali land transformation and comprehensive utilization. Background technique [0002] Plant salt refers to a balanced salt that is extracted from plant organisms, uses purely physical processes and techniques, meets low-sodium salt and various mineral trace element groups, and the ratio of various elements meets the requirements of the human body. Suaeda salsa is a good raw material for preparing plant salt, and it generally grows in saline-alkali soil. However, the saline-alkali land in many areas has different levels of chromium pollution. Planting Suaeda salsa from medium-low chromium saline-alkali land and extracting plant salt from it, the chromium content of the obtained plant salt is very high, which cannot be sold and eaten as...

Claims

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Application Information

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IPC IPC(8): B09C1/00
Inventor 王胜
Owner WEIFANG YOURONG IND
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