CN104478556B - One grows tobacco special foliar spray agent, preparation method and application method - Google Patents
One grows tobacco special foliar spray agent, preparation method and application method Download PDFInfo
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- CN104478556B CN104478556B CN201410652965.9A CN201410652965A CN104478556B CN 104478556 B CN104478556 B CN 104478556B CN 201410652965 A CN201410652965 A CN 201410652965A CN 104478556 B CN104478556 B CN 104478556B
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- tobacco
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C21/00—Methods of fertilising, sowing or planting
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D9/00—Other inorganic fertilisers
- C05D9/02—Other inorganic fertilisers containing trace elements
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Soil Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Environmental Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Fertilizers (AREA)
Abstract
Grown tobacco special foliar spray agent, preparation method and application method the invention discloses one, main purpose is：By foliage spraying agent, suppress absorptions and transhipment of the cadmium Cd in tobacco xylem, it is simple and quick to be effectively reduced potassium content in tobacco Cd contents, increase tobacco body.The technical solution adopted by the present invention is：One grows tobacco special foliar spray agent, including：The n for the water composition that the coalescents and 0.985n liters that 0.005n liters~0.015n rises~0.995n rise rises mixed liquor, and 0.5n~1.5n grams of potassium fulvate and 0.2n~0.4n grams of zinc sulfate are dissolved with the n rises mixed liquor.Wherein, the n>0.The n for being dissolved with the potassium fulvate and zinc sulfate is risen into mixed liquor concussion to shake up, the tobacco special foliar spray agent is formed.According to prefixed time interval, the tobacco special foliar spray agent is sprayed application on tobacco leaf, until tobacco leaf is ripe.
Description
Technical field
The present invention relates to a kind of spray, more particularly to one grows tobacco special foliar spray agent, preparation method and application method.
Background technology
Cadmium (Cadmium, Cd) bio-toxicity is stronger, and first kind carcinogen is classified as by world's cancer research tissue.China
Farmland Cd main sources have atmospheric sedimentation, high cadmium phosphate fertilizer, feces of livestock and poultry, sewage irrigation etc., and with annual 0.004mg/kg speed
Degree increases the Cd contents in soil, therefore Cd should be used as farm environment risk and primarily monitor element.National environmental protection portions in 2014 and
The portion of Ministry of Land and Resources《National Investigation of Soil Pollution publication》Cd Pollution in Soil point position exceeding standard rate highest is also indicated that, up to 7.0%.
Cd activity is strong in contaminated soil, is easily absorbed by plants, into food chain after be detrimental to health；Long-term intake Cd contents are higher
Food can cause animal and the even canceration of some histoorgan lesions of human body.Therefore, reduction plant Cd contents turn into food and strong
The focus in health field.
Reduction tobacco Cd contents are more at present absorbs angle from tobacco root, dense by reducing Cd available states in soil
Degree, reduces Root Absorption.The technology of reduction tobacco Cd contents mainly has at present：Tobacco recovery technique, that is, utilize super enrichment Cd cigarettes
Grass absorbs Cd concentration in the Cd in contaminated soil, reduction soil；In-situ passivation technology, i.e., by adding one into Cd contaminated soils
The quantitative material with the fixed Cd abilities of absorption, such as red mud, flyash, stalk, biological compost, enable is effectively inhaled by tobacco
The Cd forms of receipts control tobacco Cd absorption and accumulation to invalid Forms Transformation；Using Associated Antagonistic Elements technology, i.e., by adding external source
Competition element, reduces transhipment of the transport protein on tobacco cell film to Cd.But be present some shortcomings in these technologies, such as exist
In tobacco recovery technique, the screening of super enrichment tobacco has randomness, and program is cumbersome, and super enrichment inheritance of ability stability can not be protected
Card；Super enrichment biological tobacco amount is small, and the speed of growth is slow, soil Cd concentration is reached that reparation target is time-consuming longer；Super enrichment tobacco
It is enriched with after Cd, tobacco residuum, which is dealt with improperly, can cause secondary pollution.In the original location in passivating technique, passivating agent composition is complicated, it is difficult to
Commercialization, and the long-term effect of reduction crop field tobacco Cd contents lacks checking, while in-situ passivation technology does not have thorough reduction
Cd contents in soil, once soil environment condition changes and is likely to result in the Cd of fixed absorption to be re-converted to activity stronger
Form, is absorbed again by tobacco, triggers secondary pollution.In Associated Antagonistic Elements technology is applied, reduction tobacco Cd content effects are smaller,
It is only capable of reducing tobacco Cd contents as supplementary means.
The content of the invention
In view of this, the embodiment of the present invention provides one and grown tobacco special foliar spray agent, preparation method and application method.Mainly
Purpose is：Simply, tobacco Cd contents are fast and effeciently reduced.
To reach above-mentioned purpose, the embodiment of the present invention mainly provides following technical scheme：
On the one hand, the embodiment of the present invention provides one and grown tobacco special foliar spray agent, including：
N rises mixed liquor；
0.5n~1.5n grams of potassium fulvate is dissolved with the n rises mixed liquor；
And, it is dissolved with 0.2n~0.4n grams of zinc sulfate in the n rises mixed liquor；
Wherein, the n>0；
The n, which rises mixed liquor, to be included：The coalescents that 0.005n liters~0.015n rises, and 0.985n liters~0.995n liters
Water.
Optionally, foregoing tobacco special foliar spray agent, wherein, the coalescents are Tween 80.
Optionally, foregoing tobacco special foliar spray agent, wherein, the Huang that n grams is dissolved with the n liters mixed liquor is rotten
Sour potassium.
Optionally, foregoing tobacco special foliar spray agent, wherein, the n rises in mixed liquor and is dissolved with 0.3n grams
Zinc sulfate.
Optionally, foregoing tobacco special foliar spray agent, wherein, the n, which rises mixed liquor, to be included：0.01n rise into
Film auxiliary agent, and the water that 0.99n rises.
On the other hand, the embodiment of the present invention provides a preparation method for growing tobacco special foliar spray agent, comprises the following steps：
0.005n liters~0.015n coalescents risen are added in the water risen to 0.985n liters~0.995n, n is prepared into
Rise mixed liquor；
Respectively 0.5n~1.5n grams of potassium fulvate and 0.2n~0.4n grams of zinc sulfate are added to the n to rise and mixed
In liquid, stirring to the potassium fulvate and the zinc sulfate dissolve；
The n for being dissolved with the potassium fulvate and the zinc sulfate is risen into mixed liquor concussion to shake up, the tobacco is formed
Special foliar spray agent；
Wherein, the n>0.
On the other hand, the embodiment of the present invention also provides an application method for growing tobacco special foliar spray agent, including：
Tobacco special foliar spray agent is prepared using the preparation method described in above-described embodiment two；
According to prefixed time interval, the tobacco special foliar spray agent is sprayed application on tobacco leaf, until tobacco leaf
It is ripe.
Optionally, the application method of foregoing tobacco special foliar spray agent, wherein, it is described according between preset time
Every, the tobacco special foliar spray agent is sprayed application on tobacco leaf, until tobacco leaf is ripe, including：
The tobacco special foliar spray agent was sprayed application on tobacco leaf in every 5~7 days, until tobacco is ripe.
Optionally, the application method of foregoing tobacco special foliar spray agent, wherein, it is described according between preset time
Every, the tobacco special foliar spray agent is sprayed application on tobacco leaf, until tobacco leaf is ripe, including：
If according between the adjacent spraying time twice of prefixed time interval, the tobacco leaf is by rain drop erosion, then in quilt
The tobacco special foliar spray agent is reused after rain drop erosion to spray the tobacco leaf, and by this spraying time
It is used as the time to count sprayed next time.
By above-mentioned technical proposal, the present invention at least has following advantages：
The embodiment of the present invention is based on tobacco xylem and transports Cd mechanism, utilizes antagonism machine between the transpiration and zinc potassium of tobacco
System, is sprayed using the tobacco special foliar spray agent for including coalescents, water, potassium fulvate and zinc sulfate to tobacco blade face
Apply, the Cd contents in tobacco absorption and transport Cd, reduction plant can be suppressed, while supplementing the potassium needed for tobacco but also as foliar fertilizer
Element, plays a part of drop cadmium and increases potassium, quality, the effect of strengthen burning are particularly improved to tobacco.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of specification, described in detail below with presently preferred embodiments of the present invention as after.
Embodiment
Further to illustrate the present invention to reach the technological means and effect that predetermined goal of the invention is taken, below in conjunction with
Preferred embodiment describes in detail as follows.
The embodiment of the present invention one provides one and grown tobacco special foliar spray agent, including：By 0.005n liters~0.015n rise into
The n for the water composition that film auxiliary agent and 0.985n liters~0.995n rise rises mixed liquor, be dissolved with the n rises mixed liquor 0.5n~
1.5n grams of potassium fulvate and 0.2n~0.4n grams of zinc sulfate.Wherein, the n>0.
The embodiment of the present invention is based on tobacco xylem and transports Cd mechanism, utilizes antagonism machine between the transpiration and zinc potassium of tobacco
System, is sprayed using the tobacco special foliar spray agent for including coalescents, water, potassium fulvate and zinc sulfate to tobacco blade face
Apply, the Cd contents in tobacco absorption and transport Cd, reduction plant can be suppressed, while supplementing the potassium needed for tobacco but also as foliar fertilizer
Element, plays a part of drop cadmium and increases potassium, quality, the effect of strengthen burning are particularly improved to tobacco.
Further, in the above-described embodiments, the coalescents can select Tween 80, can also select sorbester p18 or
Other coalescents, as long as can increase adhesion property of the spray to blade, specific the present embodiment is to this without limit
System.
In specific embodiment, n described in above-described embodiment rise mixed liquor in can dissolve have n grams the potassium fulvate and
0.3n grams of the zinc sulfate.For example, preparing 1 liter of the mixed liquor, then 1 gram of Huang is dissolved in 1 liter of mixed liquor
Rotten acid potassium and 0.3 gram of zinc sulfate.Certainly, 0.5n grams of potassium fulvate can also be dissolved with the mixed liquor that the n rises
With 0.2n grams of zinc sulfate, or, can also be dissolved with 1.5n grams of potassium fulvate and 0.4n grams of sulphur in the mixed liquor that the n rises
Sour zinc.
In specific embodiment, the n rises mixed liquor and is made up of the 0.01n coalescents risen and the 0.99n water risen, when
So, the water that the coalescents and 0.985n that the n liters mixed liquor can also be risen by 0.015n rise is constituted, or, the n rises mixed
The water that the coalescents and 0.995n that conjunction liquid can also be risen by 0.005n rise is constituted.
The embodiment of the present invention is based on tobacco xylem and transports Cd mechanism, utilizes antagonism machine between the transpiration and zinc potassium of tobacco
System, is sprayed using the tobacco special foliar spray agent for including coalescents, water, potassium fulvate and zinc sulfate to tobacco blade face
Apply, the Cd contents in tobacco absorption and transport Cd, reduction plant can be suppressed, while supplementing the potassium needed for tobacco but also as foliar fertilizer
Element, plays a part of drop cadmium and increases potassium, quality, the effect of strengthen burning are particularly improved to tobacco.
The embodiment of the present invention two provides a preparation method for growing tobacco special foliar spray agent, comprises the following steps that：
0.005n liters~0.015n coalescents risen are added in the water risen to 0.985n liters~0.995n, n is prepared into
Rise mixed liquor.
Wherein, in specific embodiment, for example, when the n that the volume of coalescents accounts for preparation rises mixeding liquid volume
When 1%, just the coalescents that 0.01n rises are added in the water risen to 0.99n.Or, when the volume of coalescents accounts for system
When the standby n rises the 1.5% of mixeding liquid volume, the coalescents that 0.015n rises just are added to the water risen to 0.985n
In.Or, when the n that the volume of coalescents accounts for preparation rises the 0.5% of mixeding liquid volume, just 0.005n is risen described in
Coalescents are added in the water risen to 0.995n.
Respectively 0.5n~1.5n grams of potassium fulvate and 0.2n~0.4n grams of zinc sulfate are added to the n to rise and mixed
In liquid, stirring to the potassium fulvate and the zinc sulfate dissolve.
Wherein, in specific embodiment, n grams of the potassium fulvate and 0.3n grams of the zinc sulfate can be added respectively
Enter to the n and rise in mixed liquor, stirring to the potassium fulvate and the zinc sulfate dissolve.Or, respectively by 1.5n grams of institute
State potassium fulvate and 0.4n grams of the zinc sulfate is added to the n and risen in mixed liquor, stirring to the potassium fulvate and described
Zinc sulfate dissolves.Or, 0.5n grams of the potassium fulvate and 0.2n grams of the zinc sulfate are added to the n rise mixed respectively
Close in liquid, stirring to the potassium fulvate and the zinc sulfate dissolve.
The n for being dissolved with the potassium fulvate and the zinc sulfate is risen into mixed liquor concussion to shake up, the tobacco is formed
Special foliar spray agent.
Wherein, the n>0.
The embodiment of the present invention is based on tobacco xylem and transports Cd mechanism, utilizes antagonism machine between the transpiration and zinc potassium of tobacco
System, is sprayed using the tobacco special foliar spray agent for including coalescents, water, potassium fulvate and zinc sulfate to tobacco blade face
Apply, the Cd contents in tobacco absorption and transport Cd, reduction plant can be suppressed, while supplementing the potassium needed for tobacco but also as foliar fertilizer
Element, plays a part of drop cadmium and increases potassium, quality, the effect of strengthen burning are particularly improved to tobacco.
The embodiment of the present invention three provides an application method for growing tobacco special foliar spray agent, including：
First, tobacco special foliar spray agent is prepared.
Wherein, the system that the tobacco special foliar spray agent manufactured in the present embodiment can be provided using above-described embodiment two
Preparation Method is realized.Specific preparation process can be found in the methods described of the offer of above-described embodiment two, and here is omitted.
Then, according to prefixed time interval, the tobacco special foliar spray agent is sprayed application on tobacco leaf, until tobacco
Blade is ripe.
Wherein, it is described according to prefixed time interval in specific embodiment, the tobacco special foliar spray agent is sprayed application to
On tobacco leaf, until tobacco leaf is ripe, including：
The tobacco special foliar spray agent was sprayed application on tobacco leaf in every 5~7 days, until tobacco leaf is ripe.
For example, after first time, the tobacco special foliar spray agent was sprayed application on tobacco leaf, can be spaced 6 days, then
The tobacco special foliar spray agent is sprayed application on tobacco leaf for the second time, and was interval time according to 6 days, on time by the cigarette
Careless special foliar spray agent is sprayed application on tobacco leaf, until tobacco leaf is ripe.Certainly, interval time can also be set as 5 days
Or 7 days, specific the present embodiment is not limited to this.
It is further, described to spray application to the tobacco special foliar spray agent on tobacco leaf according to prefixed time interval,
Until tobacco is ripe, in addition to：
If according between the adjacent spraying time twice of prefixed time interval, the tobacco leaf is by rain drop erosion, then in quilt
The tobacco special foliar spray agent is reused after rain drop erosion to spray the tobacco leaf, and by this spraying time
It is used as the time to count sprayed next time.
For example, preset interval time be 6 days, when week a pair described in tobacco leaf for the first time spray the special blade face of the tobacco
Spray, under normal circumstances, should tobacco leaf is sprayed for the second time described in a pair in next week, if when tobacco leaf quilt described in Thursday
Rain drop erosion, then spray to the tobacco leaf again in Thursday, and using Thursday as the time to count sprayed next time,
Three sprayed for the second time in next week.
Further, in order to reach more preferably assimilation effect, it is also an option that in the prosperous growth period of plant, in sunny calm
At 4 points in afternoon or 5 PM, to plant carry out spray operation.
The embodiment of the present invention is based on tobacco xylem and transports Cd mechanism, utilizes antagonism machine between the transpiration and zinc potassium of tobacco
System, is sprayed using the tobacco special foliar spray agent for including coalescents, water, potassium fulvate and zinc sulfate to tobacco blade face
Apply, the Cd contents in tobacco absorption and transport Cd, reduction plant can be suppressed, while supplementing the potassium needed for tobacco but also as foliar fertilizer
Element, plays a part of drop cadmium and increases potassium, quality, the effect of strengthen burning are particularly improved to tobacco.
In addition, the embodiment of the present invention additionally provides indoor and outdoor experiment, to illustrate the technique effect of the embodiment of the present invention.
The embodiment of the present invention four, which is provided, carries out potted plant checking test in a kind of greenhouse, soil 2kg, external source addition are filled per basin
1mg·kg-1Pure cadmium, after being balanced 1 month under 70% field capacity, the disposable purity nitrogen that applies presses N per basin 0.4g：
P2O5：K2O=1:1:2 ratios apply phosphorus, potash fertilizer.Per one plant of pot transplanting tobacco seedling, slow seedling is after 1 week, in the afternoon blade face after 4 points
The tobacco special foliar spray agent is sprayed, clear water is compared, each every plant of 10mL is sprayed 1 time, continuously sprayed 5 times for every 5 days.Cigarette
Tobacco special foliar spray agent cadmium content reduces 20.2% compared with control described in careless foliage-spray.
The embodiment of the present invention five provides a kind of cell checking test, and 1.5mgkg is added in external source-1In pure cadmium, tobacco, on
Portion's blade is continuously sprayed after the tobacco special foliar spray agent 3 times, and cadmium content reduces 9.1%, 11.8% compared with control group respectively,
And in tobacco, upper blade potassium content has been respectively increased in 23.5%, 19.4%, tobacco, upper blade Zn content is respectively increased
1.8 times, 1.1 times.
The embodiment of the present invention six provides a kind of tobacco special foliar spray agent joint passivator experiment, in red mud rape straw
Under the Dunhua in situ processing of stalk composite passivant, in tobacco, upper blade continuously spray the tobacco special foliar spray agent 3 times
Afterwards, in the processing of tobacco special foliar spray agent joint red mud rape stalk composite passivant, in tobacco, upper blade cadmium contains
Measure the 8.488mgkg by control group-1、7.386mg·kg-1Significantly reduce as 5.704mgkg-1、5.538mg·kg-1。
The tobacco special foliar spray agent can have it can be seen from above example four, embodiment five and embodiment six
The cadmium content in tobacco on effect ground reduction cadmium pollution soil.
Above inventive embodiments four, embodiment five and embodiment six are based on tobacco xylem and transport Cd mechanism, utilize tobacco
Transpiration and zinc potassium between Antagonizing, using the special leaf of the tobacco for including coalescents, water, potassium fulvate and zinc sulfate
Face spray is sprayed to tobacco blade face, can suppress the Cd contents in tobacco absorption and transport Cd, reduction plant, while but also as
Potassium element needed for foliar fertilizer supplement tobacco, plays a part of drop cadmium and increases potassium, quality, strengthen burning are particularly improved to tobacco
Effect.
The above described is only a preferred embodiment of the present invention, any formal limitation not is made to the present invention, though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any those skilled in the art,
In the range of technical solution of the present invention is not departed from, when making a little change using above-mentioned technology contents or be modified to equivalent change
The equivalent embodiment of change, as long as being reality of the technical spirit to more than according to the present invention without departing from technical solution of the present invention content
Any simple modification, equivalent variations and modification that example made are applied, in the range of still falling within technical solution of the present invention.
Claims (5)
1. one grows tobacco special foliar spray agent, it is characterised in that including：
N rises mixed liquor；
N grams of potassium fulvate is dissolved with the n rises mixed liquor；
And, it is dissolved with 0.3n grams of zinc sulfate in the n rises mixed liquor；
Wherein, the n>0；
The n, which rises mixed liquor, to be included：The coalescents that 0.01n rises, and the water that 0.99n rises, described coalescents are tween
80。
2. a preparation method for growing tobacco special foliar spray agent, it is characterised in that including：
According to claim 1 one is grown tobacco special foliar spray agent, and coalescents are added into water, is prepared into n and is risen mixed
Close liquid；
Potassium fulvate and zinc sulfate are added to the n respectively and risen in mixed liquor, stirring to the potassium fulvate and the sulphur
Sour zinc dissolving；
The n for being dissolved with the potassium fulvate and the zinc sulfate is risen into mixed liquor concussion to shake up, the special blade face of tobacco is formed
Spray；
Wherein, the n>0.
3. an application method for growing tobacco special foliar spray agent, it is characterised in that including：
Tobacco special foliar spray agent is prepared using the preparation method described in the claims 2；
According to prefixed time interval, the tobacco special foliar spray agent is sprayed application on tobacco leaf, until tobacco leaf is ripe.
4. the application method of tobacco special foliar spray agent according to claim 3, it is characterised in that it is described according to it is default when
Between be spaced, the tobacco special foliar spray agent is sprayed application on tobacco leaf, until tobacco leaf is ripe, including：
The tobacco special foliar spray agent was sprayed application on tobacco leaf in every 5~7 days, until tobacco leaf is ripe.
5. the application method of the tobacco special foliar spray agent according to claim 3 or 4, it is characterised in that described according to pre-
If time interval, the tobacco special foliar spray agent is sprayed application on tobacco leaf, until tobacco is ripe, including：
If according between the adjacent spraying time twice of prefixed time interval, the tobacco leaf is by rain drop erosion, then by rainwater
The tobacco special foliar spray agent is reused after washing away to spray the tobacco leaf, and using this spraying time as
The time to count sprayed next time.
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| CN201410652965.9A CN104478556B (en) | 2014-11-17 | 2014-11-17 | One grows tobacco special foliar spray agent, preparation method and application method |
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| CN201410652965.9A CN104478556B (en) | 2014-11-17 | 2014-11-17 | One grows tobacco special foliar spray agent, preparation method and application method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105061025B (en) * | 2015-07-28 | 2018-05-11 | 昆明理工大学 | A kind of accelerating agent and its application |
| CN106431637A (en) * | 2016-09-07 | 2017-02-22 | 山东农业大学 | Special foliar fertilizer for tobacco |
| CN106831171B (en) * | 2017-03-03 | 2020-11-03 | 红云红河烟草(集团)有限责任公司 | Application method of foliar fertilizer for reducing content of heavy metal cadmium in tobacco leaves |
| CN107897207A (en) * | 2017-06-27 | 2018-04-13 | 湖北农谷畅响土壤修复科技股份有限公司 | A kind of blade face resistance control agent for being used to reduce rice heavy metal cadmium |
| CN108794168A (en) * | 2018-06-27 | 2018-11-13 | 中国农业科学院农业资源与农业区划研究所 | It reduces tobacco leaf cadmium content and improves the foliage spraying agent and preparation method thereof of quality |
| CN114044713B (en) * | 2021-10-19 | 2023-07-25 | 中国农业科学院茶叶研究所 | Soil barrier agent for slowing down cadmium absorption of tea trees and application method |
| CN118020784A (en) * | 2022-09-28 | 2024-05-14 | 中国科学院地球化学研究所 | Method for effectively reducing cadmium content of rice grains |
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| CN102653485A (en) * | 2011-03-02 | 2012-09-05 | 河南蓝波世科技有限公司 | Leaf surface fertilizer for degrading tobacco heavy metal |
| CN104119923B (en) * | 2013-04-25 | 2016-12-28 | 成都新朝阳作物科学有限公司 | Heavy metal-polluted soil renovation agent and application thereof |
| CN103392741B (en) * | 2013-07-02 | 2015-07-01 | 中国农业科学院农业资源与农业区划研究所 | Spraying agent for reducing cadmium absorption of tobacco in soil, and preparation and use methods thereof |
| CN103947363B (en) * | 2014-05-13 | 2016-01-06 | 湖南农业大学 | A kind of composite fertilizer and application process thereof reducing tobacco leaf cadmium content |
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