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Method for planting Suaeda salsa on medium-low-arsenic saline and alkaline land and extracting plant salts

A technology for Suaeda salsa and saline-alkali land is applied in the field of saline-alkali land reconstruction and comprehensive utilization, which can solve the problem of insignificant reduction of arsenic content, and achieve the effects of increasing total porosity, reducing arsenic content, and reducing soil alkalinity.

Inactive Publication Date: 2015-11-11
WEIFANG YOURONG IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (1) After the arsenic adsorption treatment in the soil, the arsenic content in the soil did not decrease significantly

Method used

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  • Method for planting Suaeda salsa on medium-low-arsenic saline and alkaline land and extracting plant salts
  • Method for planting Suaeda salsa on medium-low-arsenic saline and alkaline land and extracting plant salts
  • Method for planting Suaeda salsa on medium-low-arsenic saline and alkaline land and extracting plant salts

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1 A kind of method for planting Suaeda salsa in middle and low arsenic saline-alkali land and extracting plant salt

[0034] (1) Selection of saline-alkali land

[0035] The soil pH is 8.5-8.8, the soil salinity is 3.2-3.8%, the soil alkalinity is 7-9%, the total porosity of the soil is 20-25%, and the soil arsenic content is 80mg / kg.

[0036] (2) Improvement of saline-alkali land

[0037] Apply soil amendments to improve saline-alkali land.

[0038] The mass ratio of each component of the improver is: 33-37 parts of peat, 11-14 parts of pine needles, 8-10 parts of vermiculite, 7-9 parts of biochar, 10-13 parts of humus, 16-22 parts of fulvic acid 20-25 parts of desulfurized gypsum, 3-5 parts of polymaleic acid, 7-10 parts of starch-acrylamide, 3-5 parts of Halobacterium salina, 7-10 parts of iris powder, and 0.5-0.9 parts of water retaining agent.

[0039] The preparation method is to take peat, pine needles, vermiculite, biochar, desulfurized gypsum...

Embodiment 2

[0078] Example 2 Single factor analysis of interspecies ratio of clamgrass and milk vetch

[0079] Adopt the method of the selection of saline-alkali land, improvement of saline-alkali land, and arsenic adsorption in the soil in Example 1, keep the planting density of the clamgrass and milk vetch at 20×20 cm, and only change the interplanting of clam grass and milk vetch See Table 1 for the single factor analysis of the interspecies ratio of clamgrass and milk vetch.

[0080] Table 1 Univariate analysis of interspecies ratio of clamgrass and milk vetch

[0081]

[0082] The interplanting ratio is 0:1, that is, no clamgrass is planted, only milk vetch is planted;

[0083] The interplanting ratio is 3:2, that is, for every 3 rows of clamgrass planted, 2 rows of milk vetch need to be planted;

[0084] The rest of the interspecies ratios follow the above explanations.

Embodiment 10

[0085] Single factor analysis of planting density of embodiment 10 clamgrass and milk vetch

[0086] Adopt the method of the selection of saline-alkali land, improvement of saline-alkali land, and arsenic adsorption in the soil in Example 1, keep the interplanting ratio of clam grass and milk vetch at 4:2, and only change the planting of clam grass and milk vetch See Table 2 for the univariate analysis of planting densities of clamgrass and milk vetch.

[0087] Table 2 Univariate analysis of planting density of clamgrass and milk vetch

[0088]

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Abstract

The invention discloses a method for planting Suaeda salsa on medium-low-arsenic saline and alkaline land and extracting plant salts. The method comprises the step of adsorption treatment on arsenic in soil. In the step of adsorption treatment on the arsenic in the soil, the arsenic is adsorbed by interplanting nephrolepis cordifolia (L.) presl and Chinese milk vetch, the interplanting proportion of the nephrolepis cordifolia (L.) presl to the Chinese milk vetch is preferably 4:2, and the planting density of the nephrolepis cordifolia (L.) presl and the Chinese milk vetch is preferably 20cm*20cm. According to the plant salts prepared by the method disclosed by the invention, the content of the arsenic is remarkably reduced, particularly the content of the arsenic is 0.001mg / kg; the content of sodium chloride is 35 percent, the content of potassium chloride is 13 percent, the content of Ca is 8 percent, and the content of Fe is 700mg / kg; the problem that the arsenic content in the plant salts extracted by using the Suaeda salsa planted on the medium-low-arsenic saline and alkaline land is over high is solved.

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 arsenic saline-alkali land and extracting plant salt, which belongs to the field of saline-alkali land transformation and comprehensive utilization. Background technique [0002] The consumption of table salt is an important step in human progress. For a long time, humans have relied on sea salt, well salt, rock salt mining and other methods to produce table salt to meet their own needs. However, the salts that humans eat for a long time are basically inorganic substances, which can only meet the human body's own needs for inorganic salts, and it is difficult to meet the needs of humans for various functional foods due to the improvement of living standards, especially the current market salt is basically chlorine. Excessive Na+ intake has obvious negative effects on the blood pressure and blood lipids of the human body. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G1/00A23L1/237A23L27/40
CPCA01G22/00
Inventor 王胜
Owner WEIFANG YOURONG IND
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