CN102379173A - Method for reducing content of cadmium in tobacco leaf produced in soil polluted by cadmium - Google Patents
Method for reducing content of cadmium in tobacco leaf produced in soil polluted by cadmium Download PDFInfo
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- CN102379173A CN102379173A CN2011102373116A CN201110237311A CN102379173A CN 102379173 A CN102379173 A CN 102379173A CN 2011102373116 A CN2011102373116 A CN 2011102373116A CN 201110237311 A CN201110237311 A CN 201110237311A CN 102379173 A CN102379173 A CN 102379173A
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Abstract
The invention relates to a method for reducing content of cadmium in tobacco leaves produced in soil polluted by cadmium, which is characterized in that humic acid aqueous solution is added into acid soil, the concentration of the humic acid aqueous solution is 20-30g/L, the application amount in soil is 400-600L/667m<2> and the application time is 7-15 days before tobacco plants of the season are planted. Compared with the existing methods in the prior art, the method provided by the invention has the following advantages that: 1) the hydrophilic characteristic of humic acid can ensure that the humic acid can be easily produced into a liquid preparation, the humic acid can be conveniently applied together with conventional agricultural management measures such as fertilizer application and the like and the used labor is less; 2) the liquid preparation can better facilitate full contact with tobacco-planted soil; and 3) since the used materials are substances existing in the soil, the risks of secondary pollution and adverse impact to the soil are avoided and the environmental friendliness is better.
Description
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Technical field
The invention belongs to the tobacco planting technical field, a kind of method that can effectively reduce cadmium content in the tobacco leaf is provided.
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Background technology
Burn and suck in the process tobacco, cadmium gets into human body with forms such as aerosols easily in the tobacco leaf, thereby brings out multiple disease.The content of cadmium is to reduce in the tobacco cadmium to the most direct mode of human harm in the control tobacco leaf.And cadmium mainly comes from the tobacco-growing soil of cadmium pollution in the tobacco leaf.Present correlative study is more to the influence of cigarette strain Physiology and biochemistry and yield of tobacco, quality with cadmium pollution, and to how reducing cadmium pollution soil to produce in the tobacco leaf report of cadmium content less.Reported method mainly contains and in tobacco-growing soil, adds bone meal, active carbon, attapulgite etc.; These technology can reduce the cadmium content in the tobacco leaf that produces to a certain extent; But there is following problem in these methods: 1. the said method additive therefor all belongs to allogenic material for soil, exists soil is caused secondary pollution and soil property caused the potential possibility of adverse effect; 2. above-mentioned modifying agent all exists with solid and water-fast form, need stir fully soil when adding soil and just can play the effect that the control cadmium shifts to tobacco leaf, and the operability of practical application is poor.
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Summary of the invention
Based on above technical background, the purpose of this invention is to provide the method that a kind of reduction cadmium pollution soil efficient, pollution-free, easy and simple to handle produces the tobacco leaf cadmium content.
The objective of the invention is to realize through following technical scheme:
The method that reduction cadmium pollution soil of the present invention produces cadmium content in the tobacco leaf is that humus is added in the acid ground with aqueous solution state, and the humus solution concentration is 20-30g/L, and the applied amount in soil is 400-600L/667m
2 ,Time of application is that season cigarette strain was transplanted preceding 7-15 days.
Said humus solution can be the fulvic acid aqueous solution, the preparation of the fulvic acid aqueous solution: utilize HCl that the pH value of water is transferred to 6.0, add fulvic acid then and prepare required solution concentration.
The said humic acid aqueous solution that also can be, the preparation of the humic acid aqueous solution: utilize NaOH that the pH value of water is transferred to 8.0, add humic acid then and prepare required solution concentration.
The present invention is that main raw material(s) reduces cadmium content in the tobacco leaf with the humus; Have following theoretical foundation: humus is meant dark color, acidity and hydrophilic colloid type organic that natural world exists, that formed through microbial decomposition and complicated chemical process by biological (mainly being plant) remains; Because its specific molecular structure; Have characteristics such as faintly acid, colloidality, adsorptivity, complexing and oxidation-reduction quality; Easy and cadmium complexing forms has humus-cadmium ion complexing (chelating) thing of certain degree of stability, thereby plays the effect of control cadmium to cigarette strain migration, finally reaches the purpose that reduces cadmium content in the tobacco leaf.
Existent method is compared and had following advantage in the present invention and the technical background: 1. the hydrophily characteristics that possess of humus itself make it be made into liquid preparation easily, conveniently use with conventional agronomy control measures such as fertilisings, and recruitment is few; 2. liquid preparation more helps fully contacting with tobacco-growing soil; 3. material therefor of the present invention belongs to the material that soil self exists, and does not have the risk that soil is caused secondary pollution and adverse effect, has more environment friendly.
Embodiment
The present invention does below in conjunction with embodiment and further describes:
Embodiment 1.
On April 20th, 2010, the Wenshan Prefecture in Yunnan Province chooses each 667m of plot for preparing to plant cigarette respectively
2As test plot 1 and test plot 2; Being treated to of test plot 1: in 500L water, add and analyze pure NaOH; Regulate pH to 8.0; In this alkaline solution, add and analyze pure humic acid 12kg, be mixed with the solution that humic acid concentration is 24.0g/L, it is cast in the middle part that cigarette ridge body is planted in the test plot uniformly; Being treated to of test plot 2: in 500L water, add hydrochloric acid, regulate pH to 6.0, in this acid solution, add and analyze pure fulvic acid 12kg, be mixed with the solution that fulvic acid concentration is 24.0g/L, it is cast in the middle part of planting cigarette ridge body uniformly; Choose simultaneously adjacent with the area plot as the contrast plot.Carried out the cigarette transplantation of seedlings on May 1; Other field management measures carry out according to local sound tobacco production demonstration, and September 15, acquisition test plot and contrast cured tobacco leaf that produce in the plot were measured cadmium content in the tobacco leaf; The result shows that the contrast plot produces that cadmium content is 117.59 μ g/g in the tobacco leaf; Test plot 1 produces that cadmium content is 101.39 μ g/g in the tobacco leaf, and test plot 2 produces that cadmium content is 103.14 μ g/g in the tobacco leaf, compares photograph respectively and has reduced by 13.78% and 12.29%.
Embodiment 2.
On March 5th, 2010,, choose each 667m of plot for preparing to plant cigarette respectively in the Longyan, Fujian Province
2Respectively as test plot 1 and test plot 2; Being treated to of test plot 1: in 500L water, add and analyze pure NaOH; Regulate pH to 8.0; In this alkaline solution, add and analyze pure humic acid 12kg, be mixed with the solution that humic acid concentration is 24.0g/L, it is cast in the middle part that cigarette ridge body is planted in the test plot uniformly; Being treated to of test plot 2: in 500L water, add hydrochloric acid, regulate pH to 6.0, in this acid solution, add and analyze pure fulvic acid 12kg, be mixed with the solution that fulvic acid concentration is 24.0g/L, it is cast in the middle part of planting cigarette ridge body uniformly; Choose simultaneously adjacent with the area plot as the contrast plot.Carried out the cigarette transplantation of seedlings on March 12; Other field management measures carry out according to local sound tobacco production demonstration, and July 25, acquisition test plot and contrast cured tobacco leaf that produce in the plot were measured cadmium content in the tobacco leaf; The result shows that the contrast plot produces that cadmium content is 118.78 μ g/g in the tobacco leaf; Test plot 1 produces that cadmium content is 97.21 μ g/g in the tobacco leaf, and test plot 2 produces that cadmium content is 78.87 μ g/g in the tobacco leaf, compares photograph respectively and has reduced by 18.24% and 33.60%.
Above content is to combine concrete embodiment to the further explain that the present invention did, and can not assert that practical implementation of the present invention is confined to these explanations.For this person of ordinary skill in the field, under the prerequisite that does not break away from the present invention's design, can also make some simple deduction or replace, all should be regarded as belonging to the scope of patent protection that the present invention is confirmed by claims of being submitted to.
Claims (4)
1. one kind is reduced the method that cadmium pollution soil produces cadmium content in the tobacco leaf, it is characterized in that: humus is added in the acid ground with aqueous solution state, and the humus solution concentration is 20-30g/L, and the applied amount in soil is 400-600L/667m
2 ,Time of application is that the strain of this season cigarette was transplanted preceding 7-15 days.
2. the method that reduction cadmium pollution soil according to claim 1 produces cadmium content in the tobacco leaf is characterized in that: humus solution is the fulvic acid aqueous solution or the humic acid aqueous solution.
3. the method that reduction cadmium pollution soil according to claim 2 produces cadmium content in the tobacco leaf is characterized in that: the preparation of the fulvic acid aqueous solution: utilize HCl that the pH value of water is transferred to 6.0, add fulvic acid then and prepare required solution concentration.
4. the method that reduction cadmium pollution soil according to claim 2 produces cadmium content in the tobacco leaf is characterized in that: the preparation of the humic acid aqueous solution: utilize NaOH that the pH value of water is transferred to 8.0, add humic acid then and prepare required solution concentration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102373116A CN102379173A (en) | 2011-08-18 | 2011-08-18 | Method for reducing content of cadmium in tobacco leaf produced in soil polluted by cadmium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102373116A CN102379173A (en) | 2011-08-18 | 2011-08-18 | Method for reducing content of cadmium in tobacco leaf produced in soil polluted by cadmium |
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| CN102379173A true CN102379173A (en) | 2012-03-21 |
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| CN2011102373116A Pending CN102379173A (en) | 2011-08-18 | 2011-08-18 | Method for reducing content of cadmium in tobacco leaf produced in soil polluted by cadmium |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103551377A (en) * | 2013-11-06 | 2014-02-05 | 西南大学 | Method for effectively reducing heavy metal cadmium and lead in tobacco leaves |
| CN104663101A (en) * | 2015-03-07 | 2015-06-03 | 湖南农业大学 | Fertilizing method for effectively reducing content of heavy metal cadmium in tobacco leaves |
| CN105001874A (en) * | 2015-06-25 | 2015-10-28 | 红云红河烟草(集团)有限责任公司 | Curing agent for inhibiting tobacco from absorbing cadmium and lead elements in soil and application thereof |
| CN107046904A (en) * | 2017-05-03 | 2017-08-18 | 广东中烟工业有限责任公司原料供应中心 | It is a kind of to be suitable for the Fertilizer Application of Tobacco method that superelevation height above sea level plants cigarette district acid soil |
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| CN102084769A (en) * | 2010-10-28 | 2011-06-08 | 吴涵锋 | Method for reducing quantity of cadmium absorbed from soil by little cabbages |
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| JP2005058917A (en) * | 2003-08-13 | 2005-03-10 | Kokan Kogyo Kk | Treatment method for soil polluted with heavy metal |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103551377A (en) * | 2013-11-06 | 2014-02-05 | 西南大学 | Method for effectively reducing heavy metal cadmium and lead in tobacco leaves |
| CN104663101A (en) * | 2015-03-07 | 2015-06-03 | 湖南农业大学 | Fertilizing method for effectively reducing content of heavy metal cadmium in tobacco leaves |
| CN105001874A (en) * | 2015-06-25 | 2015-10-28 | 红云红河烟草(集团)有限责任公司 | Curing agent for inhibiting tobacco from absorbing cadmium and lead elements in soil and application thereof |
| CN105001874B (en) * | 2015-06-25 | 2020-04-14 | 红云红河烟草(集团)有限责任公司 | Curing agent for inhibiting tobacco from absorbing cadmium and lead elements in soil and application thereof |
| CN107046904A (en) * | 2017-05-03 | 2017-08-18 | 广东中烟工业有限责任公司原料供应中心 | It is a kind of to be suitable for the Fertilizer Application of Tobacco method that superelevation height above sea level plants cigarette district acid soil |
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Application publication date: 20120321 |