CN108323398A - Tobacco leaf cultural method and tobacco leaf - Google Patents
Tobacco leaf cultural method and tobacco leaf Download PDFInfo
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- CN108323398A CN108323398A CN201810073547.2A CN201810073547A CN108323398A CN 108323398 A CN108323398 A CN 108323398A CN 201810073547 A CN201810073547 A CN 201810073547A CN 108323398 A CN108323398 A CN 108323398A
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- tobacco leaf
- leaf
- topping
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- heatable brick
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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
- A01G22/45—Tobacco
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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
- A01C21/005—Following a specific plan, e.g. pattern
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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
- A01G7/00—Botany in general
- A01G7/06—Treatment of growing trees or plants, e.g. for preventing decay of wood, for tingeing flowers or wood, for prolonging the life of plants
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B3/00—Preparing tobacco in the factory
- A24B3/10—Roasting or cooling tobacco
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- Environmental Sciences (AREA)
- Soil Sciences (AREA)
- Botany (AREA)
- Biodiversity & Conservation Biology (AREA)
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- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
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Abstract
A kind of tobacco leaf cultural method of present invention offer and tobacco leaf, the cultural method at least include the following steps：（1）Site preparation, sowing, nursery；（2）Transplanting；（3）Fertilising, the total amount of nitrogen of single plant are reduced to 3~4g by conventional 6g or so；（4）Leaf is stayed in topping；The topping topping to before buddingging ahead of time when Topping Time is put by the flowers are in blossom at 50% conventional cigarette strain center；Single plant leaves remained is reduced to 12~14 by conventional 18~20；（5）It is divided into 5~6 a heatable brick bed time harvesting, 63~70 days the 1st a heatable brick bed of harvesting after transplanting postpone harvesting from the 2nd a heatable brick bed, follow-up to be harvested within 10~17 days per a heatable brick bed interval, and the collecting time of last a heatable brick bed tobacco leaf is 65~75 days after topping.Low burnt alkali can get using method of the present invention and compare sound tobacco.
Description
Technical field
The present invention relates to a kind of low burnt alkali than sound tobacco and its cultural method, is cultivated particularly suitable for Guizhou province.
Background technology
With cigarette " tar reduction " implementation, tarry matters in smoke amount gradually declines, and corresponding is nicotine content in smoke
Also gradually decline, to cause universal insufficient (i.e. usually said, the low tar volume of low-coke tar cigarette " fragrance, concentration, strength "
The satisfaction of cigarette is generally insufficient).Therefore, the satisfaction for how improving low-coke tar cigarette is one that Cigarette Industrial Enterprise faces
Problem.
Flue gas coke alkali ratio is the ratio of tarry matters in smoke amount and nicotine content in smoke, and the flue gas coke alkali of current domestic cigarette is than usual
It is 10~12.Flue gas coke alkali ratio is an important indicator for assessing " satisfaction ".To exploitation " low tar, high satisfaction " cigarette
Product, then while tar reduction, it is necessary to keep higher nicotine amount.Also that is, to make great efforts to reduce flue gas coke alkali ratio.
Flue gas coke alkali is more closely related with " satisfaction " than not only, meanwhile, it is also closely related with " harm reduction ".If for example, flue gas
Burnt alkali ratio is 10, then, smoker obtains 1mg nicotine, and the tar exposed amount received is exactly 10mg；If flue gas coke alkali ratio is 8,
So, smoker obtains 1mg nicotine, and the tar exposed amount received is just 8mg.As it can be seen that reducing flue gas coke alkali ratio, be conducive to drop
Low harmful components exposed amount.
Therefore, flue gas coke alkali is reduced than having the significance there are two aspect：First, improving the satisfaction of low-coke tar cigarette；
Second is that reducing using tar as the harmful components exposed amount of representative, flue gas healthhazard is reduced.
Since (such as ventilation dilution lengthens filter stick, increases stem, thin slice, swollen currently used cigarette " tar reduction " technical measures
The blending proportion etc. of swollen pipe tobacco) it is all difficult to substantially change flue gas coke alkali ratio.Therefore, need to start with from raw tobacco material, research and development are low
Burnt alkali compares sound tobacco.
Existing correlative study shows that 1) low tar tobacco leaf is typically to pass through reduction to reduce nicotine content as cost
Tar can not obtain low burnt alkali than tobacco leaf；2) tobacco leaf nicotine be influence flue gas coke alkali than most important chemical composition, carry
High nicotine content of tobacco leaves can reduce flue gas coke alkali ratio, and corresponding " high-nicotine " is exactly " low coke alkali ratio ".Therefore, low burnt alkali is than high-quality
Tobacco leaf, in other words that is, " high-nicotine sound tobacco ".
If however, simply increasing nicotine content of tobacco leaves, the nitrogenous compounds such as tobacco leaf protein matter content can also rise therewith
Height, to cause sucking quality to reduce.That is, what " high-nicotine " usually came at is " low-quality ".Therefore, high-nicotine, low
Burnt alkali than sound tobacco develop, technical barrier seek to solve " high-nicotine " and " high-quality " contradiction, realization high-nicotine with it is excellent
The fusion of matter.
In recent years, 22nd century Co., Ltd of the U.S. (biotech company in New York), is obtained by transgenic technology
High-nicotine tobacco leaf, is used in combination this high-nicotine tobacco leaf to manufacture cigarette product, and flue gas coke alkali ratio can be reduced to 5 or so, suck product
Matter is also subjected to, and the tar content for being proved to suck this product smoker sucking significantly reduces.
It should be pointed out that 22nd century Co., Ltd of the U.S. has obtained this tobacco leaf using transgenic technology, and middle domestic cigarettes
Careless industry does not allow to use tobacco leaf (the domestic cigarettes section [2003] 387 containing transgene component《State Tobacco Monopoly Bureau is about reinforcement
To the notice of transgene tobacco monitoring》).Therefore, not by transgenic technology, method using the present invention develops the low coke of high-nicotine
Alkali is than sound tobacco, for China's Cigarette Industrial Enterprise exploitation low tar, high satisfaction, potential low exposed Virginian-type cigarette product
With especially important meaning.
Invention content
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide a kind of low burnt alkali to be planted than sound tobacco
Culture method, especially suitable for Guizhou province, by fertilising, the adjustment pinched, stay the cultivation steps such as leaf, harvesting, substantially carrying
While high-nicotine content, the total nitrogen content of tobacco leaf is strictly controlled, and to make flue gas coke alkali ratio be substantially reduced, and tobacco leaf is inhaled
Food matter is without being decreased obviously.
In order to achieve the above objects and other related objects, the present invention provides a kind of tobacco leaf cultural method, the cultural method
It at least includes the following steps：
(1) site preparation, sowing, nursery；
(2) it transplants；
(3) it applies fertilizer, the total amount of nitrogen of single plant is 3~4g；
(4) leaf is stayed in topping；The time of topping is before buddingging；Single plant leaves remained 12~14；
(5) it is divided into 5~6 a heatable brick bed time harvesting, 63~70 days the 1st a heatable brick bed of harvesting, postpone harvesting, specially from the 2nd a heatable brick bed after transplanting
Follow-up to be harvested within 10~17 days per a heatable brick bed interval, the collecting time of last a heatable brick bed tobacco leaf is 65~75 days after topping.
High-nicotine kind is selected, using " low apply nitrogen, early topping, leaf, evening is stayed to harvest less " cultivation technique, can get " nicotine
Content is higher, and total nitrogen content is relatively low " low burnt alkali compare sound tobacco.Specific method can be the fertilizer by will use
Decrement, due to influence tobacco leaf nitrogenous compound content principal element be nitrogenous fertilizer, institute in this approach emphasis consideration factor be nitrogen
Fertilizer.
The conventional single plant amount of nitrogen of the Guizhou province is about 6g, and the amount of nitrogen of this programme is 3~4g/ plants.Guizhou province
The long-term temperature of (mid or late April~September) is 16.8~24.3 DEG C during tobacco leaf grown in field, and precipitation is 728~1185mm,
Sunshine time is 703~967hrs, and total soil nitrogen amount is 1.46~1.72k/kg, 115.4~147.3mg/kg of soil alkali-hydrolyzable nitrogen.
Preferably, the flue-cured tobacco cultivars in NC82, K326 any one or a few.The tobacco leaf nicotine of the two kinds
Content is relatively high.
Preferably, the topping specific method in the step (4) is first 1~2 day of topping, by the footing leaf of length ＜ 50cm
It destroys, is retained in the inferior leads length in cigarette strain all in 50cm or more；When topping, the Top Leaves of length ＜ 10cm are beaten
Fall, is retained in the upper tobacco leaf length in cigarette strain all in 10cm or more.
Preferably, increase the usage amount of potash fertilizer in the step (3) when fertilising.
Preferably, the potash fertilizer amount applied in the step (3) is 10.5~14g/ plants.
Preferably, the usage amount of phosphate fertilizer is adjusted by applying general calcium.General calcium main component is calcium dihydrogen phosphate Ca
(H2PO4) 2 and gypsum CaSO4·2H2O。
Preferably, the harvesting in the step (5) is specially still ripe to the ripe harvesting of inferior leads, middle leaf maturation to complete ripeness
Harvesting, upper leaf maturation to Delayed harvest.
Complete ripeness：Refer to upper tobacco leaf and reach the maturation of height in field, and it is abundant to modulate after-ripening.
It is ripe：Tobacco leaf reaches abundant maturation in field and modulation after-ripening, has been equipped with the qualitative character of Essential colour.
It is still ripe：Belong to moderate maturity, tobacco leaf has just reached ripe in field, and Biochemical changes are still insufficient or modulate improper after-ripening
Not enough, still lack ripe qualitative character.
Another aspect provides one kind being suitable for Guizhou province leaf tobacco production method, and the production method includes
The tobacco leaf obtained using above-mentioned tobacco leaf cultural method is obtained through overbaking.
The baking is using conventional baking method.
Another aspect provides the tobacco leaves that above-mentioned tobacco leaf cultural method obtains.
As described above, the tobacco leaf cultural method of the present invention, has the advantages that：The present invention cultivates the tobacco leaf obtained,
Its flue gas coke alkali is than significantly reducing, and tobacco leaf sucking quality does not reduce.
Specific implementation mode
Illustrate that embodiments of the present invention, those skilled in the art can be by this specification below by way of specific specific example
Disclosed content understands other advantages and effect of the present invention easily.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also be based on different viewpoints with application, without departing from
Various modifications or alterations are carried out under the spirit of the present invention.In addition, it should also be understood that, one or more method and step mentioned in the present invention
Do not repel and is gone back there may also be other methods step or between these explicitly mentioned steps before and after the combination step
Other methods step can be inserted, unless otherwise indicated.Moreover, unless otherwise indicated, the number of various method steps is only to differentiate
The convenient tool of various method steps, rather than to limit the ordering of various method steps or limiting the scope of the invention,
Its relativeness is altered or modified, without material changes in technical content, when being also considered as the enforceable model of the present invention
Farmland.
When embodiment provides numberical range, it should be appreciated that except non-present invention is otherwise noted, two ends of each numberical range
Any one numerical value can be selected between point and two endpoints.Unless otherwise defined, in the present invention all technologies for using and
Scientific terminology is identical as the normally understood meaning of those skilled in the art of the present technique.Except used in embodiment specific method, equipment,
Outside material, the record according to those skilled in the art to the grasp of the prior art and the present invention can also use and this
Any method, equipment and the material of the similar or equivalent prior art of method, equipment described in inventive embodiments, material come real
The existing present invention.
Embodiment 1
1) pilot production basic condition
Test site：Guiyang City, Guizhou Province Kaiyang County dragon hilllock tobacco proving ground.
Tested variety：K326.
Using wide field trial, 0.94 mu of cultivated area.
2) pilot production early-stage preparations
Sowing time：On 2 26th, 2015.
Cigarette was ploughed deeply before winter, depth 30cm or more.In early March, 2015 is turned over plough, is raked the soil level for the second time, and ploughing depth is
25~30cm accomplishes that native table is smooth, and grogs is fine crushing.It holds gutter successfully in time, ensures that draining is unobstructed.According to soil moisture content, weather
Situation early ridging in due course, carries out to wait planting and prepares, and opens compartment ridging, the high 25~30cm in ridge by 100cm, it is desirable that ridge soil is fine crushing, ridge face is flat
Whole, ridge body is full.The effective rainfall before transplanting is caught to be covered in time when soil moisture content is suitable for (relative moisture content 60%~70%)
Film, covering with ground sheeting is tight, keeps soil moisture content to wait planting, nursery.
3) it transplants
Transplanting time on May 7th, 2015.1212 plants/acre, line-spacing 100cm, spacing in the rows 55cm of Transplanting Density.In the usual way
Transplanting.
4) fertilizer application
Mu applies purity nitrogen 3.6Kg (the total amount of nitrogen of single plant is 3g/ plants, and local conventional total amount of nitrogen is 6g/ plants), nitrogen phosphoris and potassium fertilizer ratio
For 1: 1: 3.5 (it is 1: 1: 2 that N P and K applicating ratio is conventional), the specific method is as follows：
Base manure application is preceding by 60Kg/ mus of farm manure, 25Kg/ mus (N: P of Special basal fertilizer2O5∶K2, general calcium O=10: 10: 24)
6.25Kg, mix is uniform, and every plant of quantitative nest is applied.
Since the content of nitrogen in farm manure is less, can be neglected, main purpose is for improving soil.
It carries out the first top dressing within 10~12 days after transplanting, spreads manuer in holes special top dressing 5Kg/ mus (N: P2O5∶K2O=15: 0: 30), if
Weather arid, top dressing, which must be watered, pours leaching.The upper compartment of ridging is combined within 35~40 days after transplanting, 12Kg/ mus of oil cake, potassium sulfate are imposed
13Kg/ mus.
5) film ridging is taken off
Take off compartment on film within 38 days after transplanting.The high 35cm or more in ridge behind upper compartment, ridge body are big and plentiful.It takes off on film 1 day before compartment, removes
2~3 piece/plant of footing leaf.
6) leaf is stayed in topping
On June 19 (first 1 day of topping), 1~2 piece/plant of footing leaf is destroyed according to cigarette strain growing way and the single plant number of sheets again as one sees fit, with
Ensure the long ＞ 50cm of leaf of first harvesting leaf.
Topping on June 20 (being at this time 45 days from the transplanting date, not yet budding).Using " sufficient leaf " topping mode, (number of sheets is enough
Just pinch), single plant stays 12~14, leaf.After topping, the top length ＞ 10cm that are retained in cigarette strain.
7) ripe harvesting
Still ripe to the ripe harvesting of inferior leads, middle leaf maturation to Delayed harvest, (blade face goes out upper leaf maturation to Delayed harvest
Now obvious ripe spot).
2~3 tobacco leaves of harvesting every time are divided into 6 harvestings.1st a heatable brick bed tobacco leaf picking date was July 9.2nd a heatable brick bed tobacco leaf picking
The receipts date is July 16, and the 3rd a heatable brick bed tobacco leaf picking date was July 26, and the 4th a heatable brick bed tobacco leaf picking date was August 7, the 5th a heatable brick bed cigarette
Leaf harvest date is August 20, and the 6th a heatable brick bed tobacco leaf picking date was September 2.It is 119 days to be finished from transplanting to harvesting.
8) it toasts
In a manner of hanging rod, toasted using routine " three-stage " baking process.
Reference examples 1 are cultivated simultaneously using method same as Example 1, the difference is that：
The fertilizer of application is conventional usage amount, and total applied amount of wherein every plant of nitrogenous fertilizer is 6g；Also without using general calcium.Topping
Mode is pinched in a conventional manner：The flowers are in blossom at 50% cigarette strain center pinches when putting.Picking methods are in a conventional manner：From the 2nd a heatable brick bed
Start normal harvesting, the 2nd a heatable brick bed tobacco leaf picking date was July 11, and the 3rd a heatable brick bed tobacco leaf picking date was July 16, the 4th a heatable brick bed tobacco leaf
Harvest date is August 1, and the 5th a heatable brick bed tobacco leaf picking date was August 10, and the 6th a heatable brick bed tobacco leaf picking date was August 27.
Single plant leaves remained is 18~20.
Embodiment 2
Each a heatable brick bed time junior tobacco leaf sample is produced, every part of sample ＞ 5.0Kg carries out quality test and appraisal to junior tobacco leaf sample.It adopts
The quality evaluating result of junior tobacco leaf sample, refers to 1~table of table 6 obtained by cultivation of the present invention.
The presentation quality of junior tobacco leaf sample obtained by 1.1 embodiment of table, 1 cultivation
The presentation quality of junior tobacco leaf sample obtained by 1.2 comparative example of table, 1 cultivation
Tobacco leaf presentation quality qualification result (table 1.1, table 1.2) is shown, outside 16 junior tobacco leaf samples of gained of embodiment
Appearance quality is overall more excellent, is mainly shown as that blade face tissue is finer and smoother, gloss is vivider, better softness.Wherein, upper tobacco leaf
(the 5th a heatable brick bed, the 6th a heatable brick bed) blade construction is " loose-~still loose ", and for the upper tobacco leaf in Guizhou, blade construction has belonged to
In good quality class.
The main chemical compositions content of junior tobacco leaf sample obtained by 2 two kinds of cultivations of table
Note：Conventional is comparative example 1, and invention is embodiment 1.
Tobacco leaf chemical composition measurement result (table 2) shows, the nicotine content of 6 samples obtained by cultivation of the present invention it is overall compared with
The nicotine content of height, especially upper tobacco leaf (the 5th a heatable brick bed, the 6th a heatable brick bed) is apparently higher than the sound tobacco nicotine content model being generally acknowledged that
It encloses (it is generally acknowledged that high-quality upper tobacco leaf nicotine content be 3.5% or so).
The flue gas conventional index of junior tobacco leaf sample obtained by 3 two kinds of cultivations of table
Note：Conventional is comparative example 1, and invention is embodiment 1.
Flue gas conventional index measurement result (table 3) shows that the flue gas coke alkali of 6 samples is than overall obtained by cultivation of the present invention
Relatively low, especially the flue gas coke alkali of upper tobacco leaf (the 5th a heatable brick bed, the 6th a heatable brick bed) is than the junior tobacco leaf significantly lower than conventional cultivation method.
Aesthetic quality's (sucking quality) of junior tobacco leaf sample obtained by 4.1 embodiment of table, 1 cultivation
Aesthetic quality's (sucking quality) of junior tobacco leaf sample obtained by 4.2 comparative example of table, 1 cultivation
Sensory evaluating smoking's result (table 4.1, table 4.2) shows that the aesthetic quality of 16 samples of gained of embodiment is totally good；To the greatest extent
The nicotine content of pipe upper tobacco leaf (the 5th a heatable brick bed and the 6th a heatable brick bed) is very high, but its aesthetic quality remains to reach mean quality class.
The comparison (2015, Guizhou) of table 5 embodiment 1 and 1 cultivation of comparative example
Cultural method of the present invention refers to table 5 compared with local conventional cultivation method.Compared with local conventional cultivation method, this
The cultivation of invention is mainly characterized by " low to apply nitrogen, early topping, stay leaf, evening harvesting less ".
1 gained " upper tobacco leaf " interior quality evaluating result (2015, Guizhou) of 6 embodiment 1 of table and comparative example
Table 6 is that the interior quality test and appraisal of cultural method of the present invention and " upper tobacco leaf " obtained by local conventional cultivation method are tied
Fruit.As can be seen from Table 6, cultivation using the present invention, in the case where amount of nitrogen halves, the nicotine of gained upper tobacco leaf contains
Amount is apparently higher than local conventional cultivation method, and the total nitrogen content of tobacco leaf is less than local conventional cultivation method；Flue gas coke alkali is than apparent
Less than local conventional cultivation method, and tobacco leaf sucking quality has no reduction.Cultivation using the present invention can get low burnt alkali than excellent
Matter tobacco leaf.
7 Guizhou province environmental aspect in 2015 of table
Above embodiment is can not to be interpreted as the limit to the present invention in order to illustrate embodiment disclosed by the invention
System.In addition, in various modifications and invention listed herein method, composition variation, do not departing from the scope of the present invention
Be obvious for those skilled in the art under the premise of spirit.Although having combined, the present invention's is a variety of specific
Preferred embodiment has carried out specific description to the present invention, it is to be understood that, the present invention should not be limited only to these specific embodiments.
In fact, various, obviously modification all should include to obtain invention for those skilled in the art as described above
Within the scope of the invention.
Claims (7)
1. a kind of tobacco leaf cultural method, which is characterized in that the cultural method at least includes the following steps：
(1) site preparation, sowing, nursery；
(2) it transplants；
(3) it applies fertilizer, the total amount of nitrogen of single plant is 3~4g；
(4) leaf is stayed in topping；The time of topping is before buddingging；Single plant leaves remained 12~14；
(5) it is divided into 5~6 a heatable brick bed time harvesting, 63~70 days the 1st a heatable brick bed of harvesting, postpone harvesting, specially subsequently from the 2nd a heatable brick bed after transplanting
It is harvested within 10~17 days per a heatable brick bed interval, the collecting time of last a heatable brick bed tobacco leaf is 65~75 days after topping.
2. tobacco leaf cultural method according to claim 1, it is characterised in that：Topping specific method in the step (4)
For first 1~2 day of topping, the footing leaf of length ＜ 50cm is destroyed, is retained in the inferior leads length in cigarette strain all in 50cm
More than；When topping, the Top Leaves of length ＜ 10cm are destroyed, are retained in the upper tobacco leaf length in cigarette strain all in 10cm
More than.
3. tobacco leaf cultural method according to claim 1, it is characterised in that：Increase potash fertilizer when fertilising in the step (3)
Usage amount.
4. tobacco leaf cultural method according to claim 3, it is characterised in that：The potassium amount of application is in the step (3)
10.5~14g/ plants.
5. tobacco leaf cultural method according to claim 1, it is characterised in that：Under harvesting in the step (5) is specially
Still ripe to the ripe harvesting of portion's leaf, middle leaf maturation to Delayed harvest, upper leaf maturation to Delayed harvest.
6. a kind of low burnt alkali is than sound tobacco production method, the production method includes using described in any one of Claims 1 to 5
Tobacco leaf cultural method obtain tobacco leaf obtained through overbaking.
7. the tobacco leaf that the tobacco leaf cultural method as described in any one of Claims 1 to 5 obtains.
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| CN110692477A (en) * | 2019-11-06 | 2020-01-17 | 中国农业科学院烟草研究所 | Cultivation method for improving tobacco yield and quality and application thereof |
| CN111615925A (en) * | 2020-06-15 | 2020-09-04 | 中国农业科学院烟草研究所 | Harvesting method for revealing quality style of upper cigarettes of Cubi No. one |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108967102A (en) * | 2018-08-07 | 2018-12-11 | 中国农业科学院烟草研究所 | A method of improving nicotine content in tobacco leaf and quality of tobacco |
| CN108967102B (en) * | 2018-08-07 | 2020-08-04 | 中国农业科学院烟草研究所 | Method for improving nicotine content and tobacco quality in tobacco |
| CN110692477A (en) * | 2019-11-06 | 2020-01-17 | 中国农业科学院烟草研究所 | Cultivation method for improving tobacco yield and quality and application thereof |
| CN111615925A (en) * | 2020-06-15 | 2020-09-04 | 中国农业科学院烟草研究所 | Harvesting method for revealing quality style of upper cigarettes of Cubi No. one |
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