CN105638193B - One kind planting tobacco in difenoconazole contaminated soil and reduces its remaining method - Google Patents
One kind planting tobacco in difenoconazole contaminated soil and reduces its remaining method Download PDFInfo
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- CN105638193B CN105638193B CN201511014551.4A CN201511014551A CN105638193B CN 105638193 B CN105638193 B CN 105638193B CN 201511014551 A CN201511014551 A CN 201511014551A CN 105638193 B CN105638193 B CN 105638193B
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B79/00—Methods for working soil
- A01B79/02—Methods for working soil combined with other agricultural processing, e.g. fertilising, planting
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/02—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only
- C09K17/04—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only applied in a physical form other than a solution or a grout, e.g. as granules or gases
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2101/00—Agricultural use
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- Materials Engineering (AREA)
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Abstract
Tobacco is planted in difenoconazole contaminated soil the invention discloses one kind and reduces its remaining method, it is using agriculture and forestry organic waste material as raw material, charcoal is prepared using combined type retort, it is mixed again with difenoconazole contaminated soil by suitable weight ratio with this charcoal, the charcoal earth mixtures of pollution is made, then tobacco planting is carried out by well cellar formula young seedling transplanting method, charcoal used in the present invention, with loose porous feature, large specific surface area, it surface can be high, surface functional group is abundant, with very strong cation exchange amount (CEC) ability, these features constitute charcoal with good characterization of adsorption, after charcoal is manured into soil, improve the adsorption capacity of the pesticides such as charcoal earth mixtures p-phenylene's methyl cyclic-azole, achieve the purpose that weaken pollutant validity on source, for reducing the pesticide residues such as difenoconazole tool in tobacco There is good effect.In addition, charcoal can also improve soil quality and productivity, to provide a good ecological environment for tobacco or other plant growths.
Description
Technical field
The present invention relates to reduce the remaining technical field of pesticide in tobacco, and in particular to one kind is in difenoconazole Polluted Soil
Earth plantation tobacco simultaneously reduces its remaining method.
Background technique
Tobacco considers that people increasingly pay close attention to the production as one kind sucking property agricultural product for sustainable development and health
The safety of product.Some developed countries have formulated the maximum limitation regulation of tobacco and tobacco product middle peasant's residual, such as Germany
Just formulated early in 1986 18 kinds of pesticides in cigarette and pipe tobacco, in raw tobacco material 71 kinds of agriculture residuals recommendation highest limitation；Beauty
The Ministry of Agriculture, state also formulated the limit index residual to import tobacco agriculture, including 19 kinds of pesticides in 1987.Although China does not make also
Determine the residual highest limit standard of tobacco agriculture, but State Tobacco Monopoly Bureau has proposed to control the residual such as tobacco leaf pesticide as the " nothing of core
Public hazards leaf tobacco production technology ".Currently, how to reduce pesticide residue in tobacco leaf has become the weight that tobacco leaf safety and quality improve in China
Want content.
Tobacco leaf middle peasant is residual to be mainly derived from the prevention and treatment of pest and disease damage during tobacco planting.According to national tobacco infectious disease tune
It looks into and national tobacco insect investigation, the tobacco infectious disease in China has 68 kinds, more than 200 kinds of pest, control these pest and disease damages
Reason, chemical pesticide are one of the major measures used in production.Mainly there are three categories using more extensive pesticide at present, sterilizes
Agent, herbicide and insecticide, wherein main controlling plant diseases of fungicide, be guarantee crop yield indispensable means it
One, fungicide can be divided into protective fungicide, curative fungicide agent and plant activator by its mechanism of action.And phenyl ether methyl cyclic
Azoles (Difenoconazole) is that a kind of toxicity is low, and chemical stability is high, the broad-spectrum high efficacy triazole bactericidal agent of lasting period length, main
Inhibit the biosynthesis of germ cell wall sterol, to destroy membrane structure and function, prevent the growth of fungi, has and protect
The features such as shield, treatment and systemic activity, there have to a variety of pathogens of ascus subphylum, Basidiomycotina and Deuteromycotina to be lasting
Protection and therapeutic effect.
Difenoconazole because wide sterilization spectrum, efficiently, now to be widely used in tobacco, rice, wheat, beans and various vegetables
Dish etc..Wherein, in tobacco leaf production, it is mainly used for the Alternaria alternate that prevention and treatment seriously affects leaf tobacco production, while phenyl ether methyl cyclic
Azoles also has good preventive effect to tobacco wilt disease and tobacco root knot.Therefore, as more potential to Pest Management of Tobacco
Pesticide variety, one of main pesticide variety in tobacco leaf production will be become from now on.In view of a large amount of difenoconazoles are applied necessarily
Will lead to its residual in the soil, soil caused various environmental problems such as seriously to pollute, therefore, it is necessary to carry out in a deep going way how
Be effectively reduced residual of the difenoconazole in tobacco in above-mentioned contaminated soil, be its reasonable employment, conservation of nature environment and
Human health etc. provides scientific basis.
After difenoconazole enters soil, absorption and desorption process in soil-water environment are to influence its behavior and return
The main governing factor of place.In order to reduce the movement and diffusivity of difenoconazole in soil, people often add active carbon,
The adsorbents such as chitosan, zeolite, but there is also certain limitations for most of adsorbents.Such as active carbon price, using being limited
System；Chitosan is suitable for waste water metal ions and waste gas pollution control and treatment, and its easily softening loss under the conditions of acid soil；Zeolite sun from
Sub- switching performance is easily destroyed by strong acid, highly basic.Soil is a kind of special, complex environment medium, the suction being added in soil
Attached dose is answered the adsorbent that optimum selecting is environmental-friendly, stability is high, without secondary pollution.
Summary of the invention
Tobacco is planted in difenoconazole contaminated soil the object of the present invention is to provide one kind and reduces its remaining side
Method, to solve the problems, such as that difenoconazole remains in tobacco.
In order to solve the above technical problems, technical solution of the present invention comprises the following specific steps that:
One kind plants tobacco and reduce its remaining method in difenoconazole contaminated soil to be included the following steps:
1) after air-drying the agricultural land soil polluted by difenoconazole, sieving is saved；
2) using agriculture and forestry organic waste material as raw material, powder biomass is obtained after preliminary working, is carbonized through retort, is prepared
Charcoal；
3) charcoal particle is crushed, preservation is air-dried or dried after screening；
4) contaminated soil for obtaining the drying charcoal particle after screening with step 1) is by 1: 20~1: 100 weight
It than being stirred, then places 45 days and charcoal is allowed to precipitate and be uniformly distributed completely in the soil, difenoconazole pollution is made
Charcoal earth mixtures and encapsulate preservation；
5) in the charcoal earth mixtures for the pollution for being obtained flue-cured tobacco transplanting to step 4) using well cellar formula young seedling transplanting method, well
Cellar depth is 57 cm, and uniformly fills Jing Jiao with above-mentioned charcoal earth mixtures, is filled to well head, keeps tobacco seedling growth point exposed.
The agricultural land soil type be yellow earth, red soil, brown earth, cinnamon soil, black earth, chestnut soil, desert soil, moisture soil, anthropogenic-alluvial soil,
Rice soil, saline-alkali soil, lithology soil and tierras it is one or more.It is preferred that agricultural land soil type is yellow earth.The soil of use
Grain partial size≤2 mm.
The agriculture and forestry organic waste material is tobacco rod, corn stover, rape stalk, rice straw, rice husk, sawdust, Chinese medicine slag, flower
One of raw shell is a variety of.It is preferred that agriculture and forestry organic waste material is tobacco rod.
Agriculture and forestry organic waste material is successively air-dried and crushed by removal of impurities, concentration sunning when the preparation of charcoal in step 2, is obtained
To dry powder biomass raw material；Then combined bio charcoal granule carbonization furnace (such as Patent No. is used
A kind of retort disclosed in ZL201110073104.1) it is carbonized, by each feed supplement with a thickness of 10 20 in carbonization process
The mode of cm supplements material to control oxygen supply amount, to keep carbonization temperature in furnace final to realize at 250 450 DEG C or so
Retort endogenous substance carbonizes completely.
When charcoal particle screen selecting, selects partial size≤1 mm charcoal particle and be uniformly mixed with contaminated soil particle.
It is preferred that charcoal particle is obtained with step 1) when preparing the charcoal earth mixtures of difenoconazole pollution in step 4)
Contaminated soil particle be stirred mixing by the weight ratio of 1:100,1:40 or 1:20.
Charcoal (Biochar) is the hot spot of Recent study as a kind of novel environmental functional material.Charcoal
Refer to a kind of agriculture and forestry organic waste material carbon content that (≤700 DEG C) are generated through pyrolysis charring under complete or partial anoxic and cryogenic conditions
High, more micropores and a kind of stable substance of property.Meanwhile in biomass pyrolysis process, not only available charcoal, may be used also
It obtains gaseous mixture and bio oil, further processing can hydrogen making and other chemicals.Therefore, charcoal agricultural application,
The various aspects such as environmental protection and production of energy are of great significance.Charcoal is as a kind of natural soil conditioner, once it applies
Enter tobacco field, due to its loose porous property and huge specific surface area, thus there is very strong absorption property, can effectively adsorb phenylate
Methyl cyclic-azole and other fungicide and agrochemical Some Organic Pollutants reduce tobacco field pollution, reduce the agricultures such as difenoconazole
Residual of the medicine in tobacco, to improve the safety of tobacco leaf.In addition, charcoal can also be played after being manured into soil solid charcoal, fertilizer conservation,
The multiple effects such as water conservation and increase soil aeration, improve tobacco-growing soil environment, are that the good quality and high output of tobacco leaf creates good life
State environment.Therefore, charcoal the research and development and application of tobacco business fully meet requirements of long-term tobacco in country develop etc. it is multinomial heavy
Point Strategic Demand advantageously accounts for China tobacco pesticide residue for a long time and safety problem, in particular pollutes cigarette district tobacco
Sustainable development have found an outlet, the sustainable development to promoting the whole nation economic, the receipts of local government and numerous tobacco growers
Enter to be of great significance.In " low charcoal " the economical operation epoch, with " charcoal " solid charcoal, traditional agricultural for the purpose of leaf tobacco production can
It has both significant emission reduction and subtracts the benefits such as residual, be conducive to the development of " low charcoal " and " safety " tobacco.Simultaneously as preparing charcoal
Raw material sources wide variety (including the agricultural such as tobacco rod, corn stover, rice straw, sawdust, Chinese medicine slag, peanut shell are discarded
Object it is one or more), it is resourceful, be often only agriculture and forestry organic waste material and be as high as about 700,000,000 tons.Therefore, biomass carbonated preparation life
Object charcoal, then returning to the field in some way, not only takes full advantage of rural waste resources, but also can also improve the crops such as tobacco
Safety has broad application prospects in agriculture fields such as tobaccos, is a kind of new way to turn waste into wealth.
Therefore, the present invention prepares charcoal using combined type retort (patent No. ZL201110073104.1), then uses this
Charcoal is uniformly mixed with contaminated soil by suitable weight ratio, is then handled by reasonable method, is had following beneficial
Effect:
Charcoal used in the present invention, preparation process is simple, easy to industrialized production, utilizes tobacco rod, corn stover, water
The agricultural abandoned biomass such as rice straw, sawdust, Chinese medicine slag, peanut shell is raw material, and low in cost, raw material abundance is easy to get, for
Protection Ecological Environment is of great significance.
Charcoal used in the present invention has loose porous feature, and large specific surface area, surface can be high, and surface functional group is rich
Richness, has very strong cation exchange amount (CEC) ability, these features constitute charcoal with good characterization of adsorption, improve
The adsorption capacity of soil p-phenylene methyl cyclic-azole or other pesticides achievees the purpose that weaken pollutant validity on source, for
It reduces tobacco and other crop agricultures is residual with good effect.In addition, charcoal can also improve soil quality and productivity, to make
Object growth provides a good ecological environment.
Method of the invention is at low cost, high-efficient, and environmental risk is low, will not generate secondary pollution, is conducive to charcoal in atmosphere
Fixation, reduce greenhouse gas emission.Meanwhile practical application of the present invention is high, operating process is easily trained, and peasant can grasp,
There can be preferable market prospects in rural area large-scale popularization application.
Compared with prior art, it after charcoal and contaminated soil are mixed in a certain ratio application by the present invention, and is not added with
The control soil of charcoal is compared, greatly reduce flue-cured tobacco root, in stem and leaf difenoconazole residual, wherein root, stem and leaf
The reduced rate of middle difenoconazole is respectively as follows: 28.7 52.5%；9.6‒65.7%；17.1 64.8%, effect is clearly.Simultaneously
Charcoal have very strong stability, be not easily decomposed, can for a long time and soil interaction, to improve soil aeration and
The physicochemical characters such as water retention property also have good effect, are conducive to eliminate or reduce because being unfavorable for caused by continuous cropping obstacle of cured tobacco
Its environmental factor grown.
Detailed description of the invention
P-phenylene's methyl cyclic-azole reducing effect schematic diagram (a, b, c when Fig. 1 is the different proportion charcoal additive amount of embodiment 1
Significant difference (P < 0.05) between different letter expression processing；Same letter indicate between different disposal difference it is not significant (P >
0.05))；
P-phenylene's methyl cyclic-azole reducing effect schematic diagram (a, b, c when Fig. 2 is the different proportion charcoal additive amount of embodiment 2
Significant difference (P < 0.05) between different letter expression processing；Same letter indicate between different disposal difference it is not significant (P >
0.05))；
P-phenylene's methyl cyclic-azole reducing effect schematic diagram (a, b, c when Fig. 3 is the different proportion charcoal additive amount of embodiment 3
Significant difference (P < 0.05) between different letter expression processing；Same letter indicate between different disposal difference it is not significant (P >
0.05)).
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.
Tobacco is one of the Important Economic crop in China, and cultivated area and yield rank first in the world, every annual planting area
Ten thousand hm more than 1402, yield of tobacco is up to ten thousand t more than 170, while corresponding also more than 170 ten thousand t tobacco rod of output.Tobacco rod is both not suitable for firing
Material, is also not suitable for straw-returning and makees fertilizer, and a large amount of tobacco rods are dropped or incinerate, and farmland can not only be made to breed a large amount of germs, and
And it can also seriously pollute atmospheric environment.Therefore, reinforcing not only can be effective to the comprehensive utilization of resources of the agricultural wastes such as tobacco rod
These wastes are handled, are turned waste into wealth, and the income of tobacco grower can also be improved, to realize the sustainable development of tobacco
Exhibition.
Experimental example:
The phenomenon that being dropped for cigarette district there are a large amount of tobacco rods, the present invention is in Guizhou Province Tabacco Science and Technology Institute dragon hilllock scientific research
Proving ground carries out.After tobacco rod is collected in base, sunning is concentrated to air-dry.Tobacco rod is crushed to by 1 cm or so using hay cutter, works as cigarette
When powder Han Shui Liang≤15%, carbonized using combined bio charcoal granule carbonization furnace (patent No. ZL201110073104.1).Tool
Body operating process are as follows: offal is fitted into furnace body, initial charge is advisable with covering 20 30 cm on burner, easy with diesel oil etc.
Ignition substance in combustion things ignition burner flashpan.After material is ignited, self-sustaining combustion is not necessarily to external heat source.Using number
Formula temperature controller (XMT-121 type) carries out temperature monitoring, and control furnace body temperature anoxic under 250 450 DEG C of sub- hot conditions carbonizes.
When furnace body temperature reaches 450 DEG C, Material control oxygen supply amount is replenished in time.Additional offal thickness is about 10 20 every time
Cm, 1 h of feed time interval spray cooling after cold water extinguishes stove fire in time and come out of the stove after top layer is biomass carbonated.
After above-mentioned tobacco rod charcoal particle natural air drying, crushing and processing are carried out, are screened by the partial size of≤1mm.
The tobacco field yellow earth of long-term plantation flue-cured tobacco is air-dried, is sieved after (≤2mm), according to 40 mg/kg concentration levels to mistake
Difenoconazole is added in the soil of sieve, the soil of simulating pollution decomposed 5 days, farthest guarantees difenoconazole in soil
It is uniformly distributed in earth, then by the yellow earth particle of charcoal particle and above-mentioned pollution after screening by 1:100,1:40 and 1:20 weight
Amount is sufficiently stirred than mixing, is prepared into the charcoal earth mixtures of difenoconazole pollution.Finally dress basin is carried out according to 15 kg/basin
Afterwards, flue-cured tobacco transplanting is carried out using well cellar formula young seedling transplanting method, is flue-cured tobacco K326 for examination tobacco bred.This experiment is arranged three altogether
The processing of charcoal fertilizing standards, and a control treatment (not plus charcoal) is set, every processing is to repeat three times.
The present invention plants tobacco and reduce pollutant involved in its remaining method in difenoconazole contaminated soil to be determined
Property quantitative analysis method use gas chromatography (GC) measurement:
Difenoconazole carries out quantitative analysis using GC-2010 Plus type gas chromatograph, and chromatographic condition is as follows:
Column model: mm × 0.25 μm SHIMADZU SH-Rtx-1 30 m × 0.25
Injector temperature: 230 DEG C
Sample volume: 1.0 μ l
Split ratio: 10:1
Detector: ECD, 300 DEG C of temperature
Temperature program: see Table 1 for details for specific heating rate, set temperature and retention time
The present invention plants tobacco in difenoconazole contaminated soil and reduces reduced rate meter involved in its remaining method
It is as follows to calculate formula:
Wherein,C1 Flue-cured tobacco root before charcoal is applied, difenoconazole content (mg/kg) in stem and leaf are represented,C2It represents not
Difenoconazole content (mg/kg) in flue-cured tobacco root, stem and leaf after charcoal application in proportion
Embodiment 1: charcoal is applied to the remaining reducing effect of flue-cured tobacco root system difenoconazole:
With the increase of charcoal amount of application, the residual quantity of difenoconazole is gradually decreased in flue-cured tobacco (K326) root system, and
It applies charcoal and does not apply significant difference (P < 0.05) between charcoal processing.When charcoal and contaminated soil weight ratio are respectively as follows: 1:100,1:
When 40 and 1:20, difenoconazole residual quantity reduced rate is respectively as follows: 28.7%, 46.6% and 52.5% in flue-cured tobacco root system.As it can be seen that adopting
With the method for the present embodiment, difenoconazole residual quantity reducing effect is obvious in flue-cured tobacco root system, especially when charcoal and soil
When by weight mixing for 1:40 and 1:20, difenoconazole residual quantity reduced rate is 50% or so in root system, and reducing effect is non-
Chang Xianzhu.In view of production cost and efficiency is reduced, it is considered herein that charcoal and soil should be by 1:40 in production application
Weight ratio carry out mixing can (as shown in Figure 1).
Embodiment 2: charcoal is applied to the remaining reducing effect of difenoconazole in flue-cured tobacco stem:
With the increase of charcoal amount of application, the residual quantity of difenoconazole is gradually decreased in flue-cured tobacco (K326) stem, carbon removal
Native weight ratio 1:100 and do not apply that difference between charcoal (blank control) processing is not significant outer, remaining is applied charcoal and does not apply between charcoal processing
Significant difference (P < 0.05).When charcoal and contaminated soil weight ratio are respectively as follows: 1:100,1:40 and 1:20, in flue-cured tobacco stem
Difenoconazole residual quantity reduced rate be respectively as follows: 9.6%, 59.6% and 65.7%.As it can be seen that using the method for the present embodiment, flue-cured tobacco
Difenoconazole residual quantity reducing effect is obvious in stem, especially when charcoal and soil are 1:40 and 1:20 mixing by weight
When, difenoconazole residual quantity reduced rate is 60% or so in stem, reducing effect highly significant.In view of production cost and drop
Poor efficiency, it is considered herein that should carry out mixing by the weight ratio of 1:40 can (such as Fig. 2 for charcoal and soil in production application
It is shown).
Embodiment 3: charcoal is applied to the remaining reducing effect of cured tobacco leaf difenoconazole:
With the increase of charcoal amount of application, the residual quantity of difenoconazole is gradually lowered in flue-cured tobacco (K326) leaf, together
The reducing effect of example 2 is the same, carbon removal soil weight ratio 1:100 and not apply difference between charcoal (blank control) processing not significant outer,
Remaining is applied charcoal and does not apply significant difference (P < 0.05) between charcoal processing.When charcoal and soil weight ratio are respectively as follows: 1:100,1:
When 40 and 1:20, the difenoconazole residual quantity reduced rate in flue-cured tobacco is respectively as follows: 17.1%, 50.3% and 64.8%.As it can be seen that adopting
With the method for the present embodiment, the reducing effect of difenoconazole residual quantity is equally obvious in flue-cured tobacco, especially when charcoal and
When soil is that 1:40 and 1:20 are mixed by weight, difenoconazole residual quantity reduced rate is 50% or more in leaf, reducing effect
Highly significant.In view of production cost and efficiency is reduced, it is considered herein that charcoal and soil should be by 1 in production application:
40 weight ratio carries out mixing can (as shown in Figure 3).
Certainly, above is specific application example of the invention, and there are other embodiments of the invention, all using equivalent
The technical solution that replacement or equivalent transformation are formed, all falls within protection scope of the presently claimed invention.
Claims (2)
1. a kind of plant tobacco in difenoconazole contaminated soil and reduce its remaining method, it is characterised in that including walking as follows
It is rapid:
1) after air-drying the agricultural land soil polluted by difenoconazole, sieving is saved；
2) using agriculture and forestry organic waste material as raw material, powder biomass is obtained after preliminary working, is carbonized through retort, preparation biology
Charcoal；
3) charcoal particle is crushed, preservation is air-dried or dried after screening；
4) contaminated soil that the drying charcoal particle after screening is obtained with step 1) is stirred by 1:20~1:100 weight ratio and is mixed
It closes, then places 4 ~ 5 days and charcoal is allowed to precipitate and be uniformly distributed completely in the soil, the charcoal soil that difenoconazole pollution is made is mixed
It closes object and encapsulates preservation；
5) in the charcoal earth mixtures for the pollution for being obtained flue-cured tobacco transplanting to step 4) using well cellar formula young seedling transplanting method, Jing Jiao is deep
Degree is 5 ~ 7cm, and uniformly fills Jing Jiao with above-mentioned charcoal earth mixtures, is filled to well head, keeps tobacco seedling growth point exposed；
Soil particle partial size≤2mm of use；
When charcoal particle screen selecting, selects partial size≤1mm charcoal particle and be uniformly mixed with contaminated soil；
The agricultural land soil type is yellow earth；
The agriculture and forestry organic waste material is tobacco rod；
Agriculture and forestry organic waste material is successively air-dried and crushed by removal of impurities, concentration sunning when the preparation of charcoal in the step 2, is obtained
To dry powder biomass raw material；Then it is carbonized using combined bio charcoal granule carbonization furnace, in carbonization process
Material is supplemented to control oxygen supply amount in such a way that each feed supplement is with a thickness of 10 ~ 20cm, to keep carbonization temperature in furnace
It is final to realize that retort endogenous substance carbonizes completely at 250 ~ 450 DEG C.
2. according to claim 1 plant tobacco in difenoconazole contaminated soil and reduce its remaining method, special
Sign is: when preparing the charcoal earth mixtures of difenoconazole pollution in step 4), pollution that charcoal particle and step 1) obtain
Soil particle is stirred mixing by the weight ratio of 1:100,1:40 or 1:20.
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| CN108990499A (en) * | 2018-09-21 | 2018-12-14 | 河南农业大学 | Take into account the tobacco cultivation fertilizing method that tobacco field improvement is promoted with quality of tobacco |
| CN110326385A (en) * | 2019-08-01 | 2019-10-15 | 中国科学院地球化学研究所 | A method of tobacco-growing soil is improved using charcoal |
| CN114946311A (en) * | 2022-07-14 | 2022-08-30 | 贵州省园艺研究所(贵州省园艺工程技术研究中心) | Method for treating continuous cropping obstacles of strawberries in greenhouse |
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