CN104959372A - Method for planting suaeda salsa in medium-low-chromium-content saline-alkali lands and extracting plant salt - Google Patents
Method for planting suaeda salsa in medium-low-chromium-content saline-alkali lands and extracting plant salt Download PDFInfo
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- CN104959372A CN104959372A CN201510345920.1A CN201510345920A CN104959372A CN 104959372 A CN104959372 A CN 104959372A CN 201510345920 A CN201510345920 A CN 201510345920A CN 104959372 A CN104959372 A CN 104959372A
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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
The present invention relates to a kind of extracting method of plant salt, be specifically related to a kind of in low chromium salt-soda soil plantation Suaeda salsa and extract the method for plant salt, belong to alkaline land improvement and field of comprehensive utilization.
Background technology
Plant salt refers to from plant organism and carries out extracting, by pure physics flow process and technique, meets the one balance salt that Cardia Salt and several mineral materials trace element group, various element ratio meet human body requirement.Alkali is fluffy is prepare the good raw material of plant salt, generally grows in salt-soda soil.But there is pollution of chromium in various degree in the salt-soda soil in a lot of area.Therefrom low chromium salt-soda soil plantation Suaeda salsa also therefrom extracts plant salt, obtains plant salt chromium content very high, cannot sell as qualified plant salt and eat.
Chromium, due to very similar with the structure of some indispensable elements, affects the absorption to some other mineral matter nutritional.The impact of chromium on the picked-up of other inorganic nutrients and accumulation has caused the maximum attention of researcher.In addition, the chromium of high-load itself is also larger to the harm of human body, and Cr VI is to people's mainly chronic murder by poisoning, and it can pass through alimentary canal, respiratory tract, skin and mucous membrane and invade human body, mainly accumulates in vivo in liver, kidney and incretory.
How to reduce the content of chromium in plant salt and become the important directions of research.
Following defect is there is in prior art:
(1) in the plant salt extracted in the growing area planting plants in therefrom low chromium salt-soda soil, the content of chromium is too high;
(2) nutrient such as plant salt sodium chloride, amino acid, Vc, Ca, Mg prepared, content is lower.
Summary of the invention
The present invention solves the deficiency that prior art exists, provide a kind of in low chromium salt-soda soil plantation Suaeda salsa and extract the method for plant salt, to realize following goal of the invention:
1, adopting the inventive method to reduce chromium content in the plant salt of preparation is 0.18-0.28 mg/Kg;
2, in the plant salt adopting the inventive method raising to prepare, sodium chloride content is to 31.2-34.8%;
3, in the plant salt adopting the inventive method raising to prepare, amino acid content is to 15.6-21.6%;
4, adopting the inventive method to improve Vc content in the plant salt of preparation is 28.2-42.5mg/g;
5, adopt the inventive method to significantly improve the plant salt micronutrient levels of preparation, Fe content is 728-742 mg/Kg, I content is 70.21-80.02mg/Kg;
6, reduce the chromium content in growing area soil, drop to 110-120mg/kg from 280-300mg/kg.
For solving above technical problem, technical scheme provided by the invention is as follows:
In low chromium salt-soda soil plantation Suaeda salsa and extract the method for plant salt, comprise the selection in salt-soda soil, improvement soil,
Plantation Leersia Sw and dayflower, plantation Suaeda salsa, plant salt extract.
Below the further improvement to technique scheme:
Described plantation Leersia Sw and dayflower: between Leersia Sw and dayflower adopt, kind mode is planted.
Described plantation Leersia Sw and dayflower: between Leersia Sw and dayflower, kind ratio is 4:3, planting density is 30cm × 30cm.
Described plantation Leersia Sw and dayflower: between Leersia Sw and dayflower, kind ratio is 3:2, planting density is 35cm × 35cm.
Described plantation Leersia Sw and dayflower: in planting process, Leersia Sw cradles 4-5 time, dayflower beta pruning 3-4 time.
Described improvement soil: the soil conditioner of use comprises the component of following weight portion: aluminum sulfate 7-9 part, cotton seed hulls 13-15 part, charcoal 18-21 part, desulfurated plaster 10-13 part, seawood meal 12-15 part, water-loss reducer 7-11 part, alfalfa meal 10-14 part.
Described plant salt extracts and comprises slurrying and ultrasonic wave process: after slurrying, with ultrasonic wave process 2 times, frequency is respectively: 40-60KHz and 70-100KHz.
Described plant salt extracts and also comprises crystallization: crystallization pressure is 87.25-99.75kpa.
The plant salt chromium content adopting the present invention to prepare is 0.18-0.28mg/Kg.
Adopt the inventive method plantation Leersia Sw and dayflower after 1 year, the chromium content in planting area soil has dropped to 110-120mg/kg from 280-300mg/kg.
Adopt above technical scheme, beneficial effect is:
1, the plant salt chromium content adopting the inventive method to prepare is 0.18-0.28 mg/Kg, the problem of chromium too high levels in the plant salt that in solving, low chromium salt-soda soil plantation Suaeda salsa extracts;
2, the inventive method the plant salt sodium chloride 31.2-34.8%, amino acid/11 5.6-21.6%, Vc28.2-42.5mg/g, Ca2.6-3.8mg/g, Mg42.7-56.4 mg/g that prepare is adopted, the problem that in the plant salt that in solving, low chromium salt-soda soil plantation Suaeda salsa extracts, the nutrient such as sodium chloride, amino acid, Vc is low;
3, the plant salt micronutrient levels adopting the inventive method to prepare is high, and Fe content is 728-742 mg/Kg, I content is 70.21-80.02mg/Kg;
4, the plant salt adopting the inventive method to prepare;
5, adopt the present invention, plantation Leersia Sw and dayflower are after 1 year, and the chromium content in soil has dropped to 110-120mg/kg from 280-300mg/kg;
6, adopt the present invention, plantation Leersia Sw and dayflower plant again alkali for 1 year after fluffy 1 year, and 0-40cm soil layer salt content is 0.4-0.6%, pH is 7.2-7.3.
Detailed description of the invention
Below the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
the method of low chromium salt-soda soil plantation Suaeda salsa and extraction plant salt in embodiment 1 one kinds
The selection in step 1, salt-soda soil
Littoral saline and alkaline soil plot, 0-40cm soil layer salt content is 1.0-1.4%, pH is 7.8-8.2, and chromium content is 280-300mg/kg.
Step 2, improvement soil
The previous year that plantation alkali is fluffy, in spring, be evenly sprinkled into soil conditioner 180kg/ mu to the plot selected, deep ploughing 0.4m, rakes, waters once.
Described soil conditioner comprises the component of following weight portion: 8 parts, aluminum sulfate, cotton seed hulls 14 parts, charcoal 19 parts, desulfurated plaster 12 parts, seawood meal 14 parts, water-loss reducer 10 parts, alfalfa meal 13 parts.
Step 3, plantation Leersia Sw and dayflower
(1) ditch is adjusted.Is turned in plot after raking, adjust plantation ditch, every bar plantation furrow width 30-40cm.
(2) plant.Between employing, kind mode plants Leersia Sw and dayflower, and a kind ratio is 4:3, namely plants 3 row dayflowers between 2 row Leersia Sw.Planting density is 30cm × 30cm, and described planting density is the plant strain distance × line-spacing of plantation.
(3) irrigate.Take furrow irrigation mode to irrigate, irrigate weekly once, keep soil moist.
(4) apply fertilizer.Monthly apply fertilizer once, execute 50kg nitrogen-phosphorus-potassium compound fertilizer, 20kg urea with water punching for every mu.
(5) manage.Leersia Sw grow to height 0.4m time, cradle, Cutting Height is aerial part about 20cm, cradle frequency be January once, cradle 4 times altogether.When dayflower branch length is more than 0.3m, carry out beta pruning, monthly beta pruning once, can beta pruning 3 times.Cradle and can promote the growth of root system and the absorption of heavy metal with beta pruning.
Step 4, heavy metals measurement.With atomic absorption spectrophotometry, detect the content of heavy metal chromium in soil.
Step 5, plantation Suaeda salsa
After the field plantation Leersia Sw selected and dayflower, next year plantation Suaeda salsa, concrete grammar is:
(1) Seed Treatment.Thidiazuron 0.7-1 part, brassin lactones 0.06-0.09 part configuration root-inducing powder, get above-mentioned root-inducing powder 0.7g ~ 1g and first dissolve with a small amount of alcohol, then add 1L water, seed soaking time 1-2h.
(2) plant.Mid-March, by the Suaeda salsa seed that processed in field.
(3) seedling thinning.The timely seedling thinning when seedling has 6 true leaves, spacing in the rows 8-10cm, weeds out the rank grass simultaneously, and after thinning, 2 ~ 3d sprays the urea liquid of a time 0.3%, ensures that Suaeda salsa grows vigorously.
(4) gather in the crops.Mid-November, gather in the crops.2 ~ 4d waters once after adopting, and urea 10-20kg/ mu is executed in punching simultaneously, promotes regeneration branch, capable of circulationly gathers.
Step 6, plant salt extract
(1) clean
Selection Suaeda salsa is fresh, the young stem and leaf without disease and pest, cob edible portion, segment, and length is 5-10cm; Under room temperature condition, rinse well.
(2) blanching
Hot water is put into, blanching 10-15 minute, water temperature 90-98 DEG C by fluffy for the alkali cleaned up.
(3) slurrying and ultrasonic wave process
Pulper is put into, slurrying by fluffy for alkali that blanching is good.After slurrying, carry out ultrasonic wave process, 50KHz ultrasonic wave process 10 minutes; 80KHz ultrasonic wave process 15 minutes.
(4) centrifugal
By fluffy for alkali slurry filtered through gauze, elimination object dregs, the juice obtained, through centrifugal, obtains supernatant.
(5) crystallization
Supernatant is heated to 57 DEG C and suction filtration while hot, the solution obtained, under 94.75kpa pressure, is heated to 78 DEG C, stops when evaporative crystallization to weight no longer reduces, obtained finished product plant salt.
the method of low chromium salt-soda soil plantation Suaeda salsa and extraction plant salt in embodiment 2 one kinds
The selection in step 1, salt-soda soil
Step 2, improvement soil
Above-mentioned steps operates according to the method for embodiment 1, and the parameter of change is in table 1:
Table 1
Step 3, plantation Leersia Sw and dayflower
According to method plantation Leersia Sw and the dayflower of embodiment 1, the parameter of change is in table 2:
Table 2
Step 4, heavy metal analysis.With atomic absorption spectrophotometry, to plantation Leersia Sw and the soil of dayflower after 1 year of embodiment 1-6, carry out chromium content detection, testing result is in table 3:
The plantation Leersia Sw of table 3 embodiment 1-6 and the soil Cr content of dayflower after 1 year
Shown by the result of table 3, through soil treatment step, the chromium content in soil has dropped to 110-120mg/kg, can plant Suaeda salsa.
Step 5, plantation Suaeda salsa
According to the method plantation Suaeda salsa of embodiment 1.
Step 6, plant salt extract
Extract plant salt according to the method for embodiment 1, the parameter of change is in table 4:
Table 4
Comparative example 1: adopt the method plantation Suaeda salsa of embodiment 1 and extract plant salt, the plantation Leersia Sw in change soil improvement step and dayflower step are: only plant Leersia Sw, planting density is 40cm × 40cm.
Comparative example 2: adopt the method plantation Suaeda salsa of embodiment 1 and extract plant salt, the plantation Leersia Sw in change soil improvement step and dayflower step are: only plant dayflower, planting density is 25cm × 25cm.
Plant salt quality index prepared by embodiment 1-6, in table 5; Plant salt quality index prepared by comparative example 1-2, in table 6;
Plant salt quality index prepared by table 5 embodiment 1-6
From table 5, embodiment 1,5 is preferred embodiments.
Plant salt quality index prepared by table 6 comparative example 1-2
From table 5 and table 6: the plant salt nutrient composition content adopting the inventive method to prepare is high, and heavy metal chromium content is low.
The plant salt constituent content adopting the inventive method to prepare is: chromium 0.18-0.28 mg/Kg, sodium chloride 31.2-34.8%, amino acid/11 5.6-21.6%, Vc28.2-42.5mg/g, Ca2.6-3.8mg/g, Fe728-742 mg/Kg, Mg42.7-56.4 mg/g, I 70.21-80.02mg/Kg.
The invention solves the low and problem of chromium too high levels of the nutrient such as sodium chloride, amino acid, Vc in the plant salt that low chromium salt-soda soil plantation Suaeda salsa extracts, meanwhile, improve the soil quality in low chromium salt-soda soil in growing area.Employing the present invention plants Leersia Sw and dayflower plants again alkali for 1 year after fluffy 1 year, and 0-40cm soil layer salt content is 0.4-0.6%, pH is 7.2-7.3.
The above is the citing of best mode for carrying out the invention, and the part wherein do not addressed in detail is the common practise of those of ordinary skill in the art.Protection scope of the present invention is as the criterion with the content of claim, and any equivalent transformation carried out based on technology enlightenment of the present invention, also within protection scope of the present invention.
Claims (10)
1. low chromium salt-soda soil plantation Suaeda salsa and extract the method for plant salt in, is characterized in that: comprise salt-soda soil
Selection, improvement soil, plantation Leersia Sw and dayflower, plantation Suaeda salsa, plant salt extract.
2. according to claim 1 a kind of in low chromium salt-soda soil plantation Suaeda salsa and extract the method for plant salt, it is special
Levy and be: described plantation Leersia Sw and dayflower: between Leersia Sw and dayflower adopt, kind mode is planted.
3. according to claim 2 a kind of in low chromium salt-soda soil plantation Suaeda salsa and extract the method for plant salt, it is special
Levy and be: described plantation Leersia Sw and dayflower: between Leersia Sw and dayflower, kind ratio is 4:3, planting density is 30cm × 30cm.
4. according to claim 2 a kind of in low chromium salt-soda soil plantation Suaeda salsa and extract the method for plant salt, it is special
Levy and be: described plantation Leersia Sw and dayflower: between Leersia Sw and dayflower, kind ratio is 3:2, planting density is 35cm × 35cm.
5. according to claim 1 a kind of in low chromium salt-soda soil plantation Suaeda salsa and extract the method for plant salt, it is special
Levy and be: described plantation Leersia Sw and dayflower: in planting process, Leersia Sw cradles 4-5 time, dayflower beta pruning 3-4 time.
6. according to claim 1 a kind of in low chromium salt-soda soil plantation Suaeda salsa and extract the method for plant salt, it is special
Levy and be: described improvement soil: the soil conditioner of use comprises the component of following weight portion: aluminum sulfate 7-9 part, cotton seed hulls 13-15 part, charcoal 18-21 part, desulfurated plaster 10-13 part, seawood meal 12-15 part, water-loss reducer 7-11 part, alfalfa meal 10-14 part.
7. according to claim 1 a kind of in low chromium salt-soda soil plantation Suaeda salsa and extract the method for plant salt, it is special
Levy and be: described plant salt extracts and comprises slurrying and ultrasonic wave process: after slurrying, with ultrasonic wave process 2 times, frequency is respectively: 40-60KHz and 70-100KHz.
8. according to claim 1 a kind of in low chromium salt-soda soil plantation Suaeda salsa and extract the method for plant salt, it is special
Levy and be: described plant salt extracts and also comprises crystallization: crystallization pressure is 87.25-99.75kpa.
9. according to claim 1 a kind of in low chromium salt-soda soil plantation Suaeda salsa and extract the method for plant salt, it is special
Levy and be: the plant salt chromium content adopting the present invention to prepare is 0.18-0.28mg/Kg.
10. according to claim 1 a kind of in low chromium salt-soda soil plantation Suaeda salsa and extract the method for plant salt, it is special
Levy and be: adopt the inventive method plantation Leersia Sw and dayflower after 1 year, the chromium content in planting area soil has dropped to 110-120mg/kg from 280-300mg/kg.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106171104A (en) * | 2016-07-11 | 2016-12-07 | 山东胜伟园林科技有限公司 | A kind of method that desulfurated plaster improvement salt-soda soil is used in deep ploughing of tiling |
| CN109089793A (en) * | 2018-07-12 | 2018-12-28 | 安徽袁粮水稻产业有限公司 | A kind of efficient high-yield selenium-rich paddy rice planting method for reducing cadmium content in rice |
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| CN104550208A (en) * | 2013-10-12 | 2015-04-29 | 中环循(北京)环境技术中心 | Farmland soil heavy metal pollution restoration method through coupling activating and passivating |
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Patent Citations (4)
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| CN101040705A (en) * | 2006-03-24 | 2007-09-26 | 孙贻超 | Functional health-care edible seepweed plant salt and the method for preparing the same |
| CN103480643A (en) * | 2013-10-12 | 2014-01-01 | 南开大学 | Method for restoring cadmium/lead single or combined polluted soil by using hyperaccumulating flower emilia sonchifolia |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106171104A (en) * | 2016-07-11 | 2016-12-07 | 山东胜伟园林科技有限公司 | A kind of method that desulfurated plaster improvement salt-soda soil is used in deep ploughing of tiling |
| CN109089793A (en) * | 2018-07-12 | 2018-12-28 | 安徽袁粮水稻产业有限公司 | A kind of efficient high-yield selenium-rich paddy rice planting method for reducing cadmium content in rice |
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