CN106576791A - Planting method for improving tobacco leaf quality of China Tobacco 100 of flue cured tobacco variety - Google Patents
Planting method for improving tobacco leaf quality of China Tobacco 100 of flue cured tobacco variety Download PDFInfo
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- CN106576791A CN106576791A CN201611089344.XA CN201611089344A CN106576791A CN 106576791 A CN106576791 A CN 106576791A CN 201611089344 A CN201611089344 A CN 201611089344A CN 106576791 A CN106576791 A CN 106576791A
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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
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
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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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Abstract
The invention belongs to the technical field of tobacco planting and particularly discloses a planting method for improving the tobacco leaf quality of China Tobacco 100 of the flue cured tobacco variety. The method comprises the steps of seedling growing, transplanting, fertilizer application and irrigation, disease and pest control, tip pruning and branch removing, and harvesting after being ripe. In the transplanting step, seedlings of the China Tobacco 100 of the flue cured tobacco variety are transplanted to a special transplanting medium of the China Tobacco 100 of the flue cured tobacco variety to be planted. The special transplanting medium of the China Tobacco 100 of the flue cured tobacco variety comprises 160-200 parts of beef liver soil, 80-100 parts of sandy soil, 40-60 parts of purple soil, 20-30 parts of lime, 40-60 parts of chestnut soil, 40-60 parts of brown calcic soil, 80-100 parts of river sand and 50-70 parts of humic acid. Through the planting method provided by the invention, the sensory quality and quality of tobacco leaves of the China Tobacco 100 can be remarkably improved. In addition, the method can also remarkably reduce the sugar-nicotine ratio in the tobacco leaves of the China Tobacco 100 and is beneficial to highlighting the style and characteristics of the tobacco leaves of the China Tobacco 100.
Description
Technical field
The present invention relates to tobacco planting technical field, and in particular to a kind of raising flue-cured tobacco cultivars Zhongyan-100 quality of tobacco
Implantation methods.
Background technology
Zhongyan-100 be Chinese tobacco genetic breeding research (north) center with High quality and diseases resistance as main direction, using high-quality
Parent hybridizes with multiresistance complementation parent 9201 centered on kind NC82, then after being returned for 5 generations with NC82, uses pedigree method orthoselection
The high-quality multi-resistance new flue-cured tobacco varieties cultivated, in Shandong, Henan, Chongqing, the western Hunan, the cigarette district such as Heilungkiang plant experimentally, it is deep to receive cigarette
Factory, the welcome of tobacco grower, in December, 2002 is by national tobacco evaluation committee's authorization.
At present the plantation common method of the kind is as follows：Nursery is all using large, medium and small canopy and the floating deposited or shallow water support
Disk seedling raising mannerses carry out intensive seedling production；Transplanted after nursery；Paddy field is substantially (false using double ridges using single ridge, arid hillside field
Single file) cultivation, ridge height is generally in 25cm-30cm；Transplanted using the method transplanted under film, whole field period does not take off film, paddy field is moved
Plant density (1.2m × 0.55-0.60m) 926-1010 strain 666.67m-2, arid hillside field Transplanting Density (2.1m × 0.55-0.60m)
1058-1154 strain 666.67m-2；Using fertilizer in fertilizer type mainly have hog manure (N: P2O5: K2O=0.5: 0.2:
0.25), peanut cake fertilizer (N: P2O5: K2O=4.6: 1: 1), chemical fertilizer mainly has Special compound fertilizer for tobacco (N: P2O5: K2O=
13: 9: 14), potassium nitrate (N: K2O=13.5: 44.5) and potassium sulfate (containing K2O 50%), dose N: P2O5: K2O=10-13
: 6-8: 17-20, wherein whole fertilizers and 40%-50% Special compound fertilizer for tobacco bases (cave) are applied when transplanting, 50%-60% cigarettes
Careless composite fertilizer special chases after (dry) and applies in group, stretch the root phase, it is prosperous for a long time, Topping Stage be respectively watered pouring and apply 1 nitroxylic acid potassium, pinching
After be watered pouring and apply potassium sulfate.It is main in the method for pinching to be pinched using buddingging.
The flue-cured tobacco Zhongyan-100 original tobacco and sugar content and sugared alkali that obtain are planted by the method kind and additive method than higher, Nicotiana tabacum L.
Style characteristic owe project.It has been investigated that, soil has great impact to the style of Nicotiana tabacum L., and this is because soil is cigarette strain
Absorb the conditions such as the place of nutrition and moisture, soil different, cause the rings such as cigarette strain growth and development process Zhong Shui, fertilizer, gas, light, heat
Border produces difference, has had influence on accumulation, conversion and the degradation process of the chemical composition for determining tobacco style, has finally dominated Nicotiana tabacum L.
Style formed.Although flue-cured tobacco is very strong to the adaptability of soil, for distinct style characteristic leaf tobacco production, flue-cured tobacco pair
Soil has stronger selectivity.Therefore, soil constitution is improved during plantation flue-cured tobacco cultivars Zhongyan-100, in raising
The quality of cigarette 100 has great importance.
Due to different flue-cured tobacco cultivars, at aspects such as plantation, growth, bakings, can all there are different demands, so as to realize not
Same flue-cured tobacco cultivars local flavor, accordingly, it would be desirable to be directed to different flue-cured tobacco cultivars, meets its optimal growth needs, or baking needs,
Plantation, fertilising or the baking scheme for being adapted to the flue-cured tobacco cultivars is provided.
The content of the invention
The technical problem to be solved is, in order to overcome above-mentioned deficiency present in prior art, there is provided a kind of
Improve the implantation methods of flue-cured tobacco cultivars Zhongyan-100 quality of tobacco.
A kind of implantation methods for improving flue-cured tobacco cultivars Zhongyan-100 quality of tobacco, comprising nursery, transplanting, fertilising and pouring, disease
Pest control, pinch and smear wooden fork, ripe pluck step；By flue-cured tobacco cultivars Zhongyan-100 seedling replanting to flue-cured tobacco product in transplant step
The special transplanting medium for planting Zhongyan-100 is planted；The special transplanting medium of described flue-cured tobacco cultivars Zhongyan-100 comprising it is following into
Point：
160～200 parts of Hepar Bovis seu Bubali soil；80～100 parts of sand soil；40～60 parts of purple soil；20～30 parts of Calx；Chestnut soil 40
～60 parts；40～60 parts of brown soil；80～100 parts of river sand；50～70 parts of humic acidss.
Hepar Bovis seu Bubali soil is the soil of Hepar Bovis seu Bubali soil Tanaka, belongs to purple soil, is distributed widely in Nanxiong City of Guangdong Province.
Sand soil is the soil of sand mud Tanaka, is distributed widely in Nanxiong City of Guangdong Province.
Purple soil：Develop in subtropical zone calcareous purple sand shale Parental Soils.Complete section face in homogeneous purple or
Aubergine, level is not obvious.It is distributed widely in Nanxiong City of Guangdong Province.
Sierozem：It is the xerosol of the weak leaching in warm temperate zone Desert Grassland, the weak humification in top layer, soil organic matter content 1-
Be pseudohypha shape or mottled calcic horizon at 2.5%, 15-30cm, section middle and lower part it may also occur that Gypsum Fibrosum illuvium with it is solvable
Salt illuvium.
Brown soil develops the soil under temperate district steppe vegetation.The many sand gravels of earth's surface, section top is in brown brown, under
Portion is powder stratiform or speckle shape canescence calcic horizon.
Preferably, the special transplanting medium of described flue-cured tobacco cultivars Zhongyan-100 includes following composition：
180 parts of Hepar Bovis seu Bubali soil；90 parts of sand soil；50 parts of purple soil；25 parts of Calx；50 parts of chestnut soil；50 parts of brown soil；River sand
90 parts；60 parts of humic acidss.
Preferably, list is carried out in the special transplanting medium of flue-cured tobacco cultivars Zhongyan-100 seedling replanting to flue-cured tobacco cultivars Zhongyan-100
Ridge or double ridge cultivation, a height of 25～35cm in ridge of the special transplanting medium.
Most preferably, carry out in the special transplanting medium of flue-cured tobacco cultivars Zhongyan-100 seedling replanting to flue-cured tobacco cultivars Zhongyan-100
Single ridge or double ridge cultivation, a height of 30cm in ridge of the special transplanting medium.
Preferably, described humic acidss are prepared by the method for comprising the steps of：
(1) by 100～150 parts of pig manure, 80～100 parts of chicken manure, 60～80 parts of Pericarppium arachidis hypogaeae, 60～80 parts of Testa oryzae, straw 30
～50 parts, 30～50 parts of mix homogeneously of wood flour；
(2) microbial inoculum is added in the raw material of step (1) mix homogeneously；
(3) compost obtains final product described humic acidss for 10～40 days.
Most preferably, in step (1) by 120 parts of pig manure, 90 parts of chicken manure, 70 parts of Pericarppium arachidis hypogaeae, 70 parts of Testa oryzae, 40 parts of straw,
40 parts of mix homogeneously of wood flour.
Most preferably, the microbial inoculum described in step (2) includes aspergillus niger, aspergillus oryzae, rhizobium melioti, bacillus subtilis
Bacterium.
Most preferably, in the feed, the consumption of the aspergillus niger is 4x10 to step (2)9Individual/gram, the use of the aspergillus oryzae
Measure as 2x109Individual/gram, the consumption of the rhizobium melioti is 0.5x109Individual/gram, the consumption of the bacillus subtilises is
1x109Individual/gram.
Most preferably, step (3) compost 30 days at 50～55 DEG C.
Beneficial effect：The invention provides a kind of implantation methods of the flue-cured tobacco cultivars Zhongyan-100 of brand-new formula, the method weight
Point is realized by adjusting the optimal suitable planting soil constitution of flue-cured tobacco cultivars Zhongyan-100；By plantation side of the present invention
Method, can significantly improve the aesthetic quality of Zhongyan-100 Nicotiana tabacum L. and the quality of Nicotiana tabacum L.；Additionally, the method can also significantly reduce middle cigarette
Sugared alkali ratio in 100 Nicotiana tabacum Lves, is conducive to projecting the style characteristic of Zhongyan-100 Nicotiana tabacum L..
Specific embodiment
The present invention is explained further below in conjunction with specific embodiment, but embodiment does not do any type of limit to the present invention
It is fixed.
The implantation methods of the flue-cured tobacco cultivars Zhongyan-100 of embodiment 1
Step：(1) nursery；(2) transplant；Transplant into for the special transplanting medium of flue-cured tobacco cultivars Zhongyan-100, using list
Ridge is planted, a height of 30cm in ridge of the special transplanting medium；(3) apply fertilizer and pour；(4) prevention and control of plant diseases, pest control；(5) pinch and smear wooden fork；
(6) it is ripe to pluck.Wherein, nursery, Transplanting Density, fertilising and pouring, the prevention and control of plant diseases, pest control, pinch and smear wooden fork and the ripe step such as pluck
Carry out according to general farming.
For the special transplanting medium formula of flue-cured tobacco cultivars Zhongyan-100：180 parts of Hepar Bovis seu Bubali soil；90 parts of sand soil；Purple soil 50
Part；25 parts of Calx；50 parts of chestnut soil；50 parts of brown soil；90 parts of river sand；Also include 60 parts of humic acidss.The mixing of above-mentioned formula is equal
The even special transplanting medium obtained final product for flue-cured tobacco cultivars Zhongyan-100.
Described humic acidss are prepared via a method which to obtain：
(1) it is 120 parts of pig manure, 90 parts of chicken manure, 70 parts of Pericarppium arachidis hypogaeae, 70 parts of Testa oryzae, 40 parts of straw, 40 parts of mixing of wood flour are equal
It is even；
(2) microbial inoculum is added in the raw material of step (1) mix homogeneously；Described microbial inoculum includes aspergillus niger, aspergillus oryzae, Herba Medicaginiss
Root nodule bacteria, bacillus subtilises；In raw material, the consumption of the aspergillus niger is 4x109Individual/gram, the consumption of the aspergillus oryzae is
2x109Individual/gram, the consumption of the rhizobium melioti is 0.5x109Individual/gram, the consumption of the bacillus subtilises is 1x109Individual/
Gram；
(3) compost obtains final product described humic acidss for 30 days at 50～55 DEG C.
The implantation methods of the flue-cured tobacco cultivars Zhongyan-100 of embodiment 2
Step：(1) nursery；(2) transplant；Transplant into for the special transplanting medium of flue-cured tobacco cultivars Zhongyan-100, using list
Ridge is planted, a height of 30cm in ridge of the special transplanting medium；(3) apply fertilizer and pour；(4) prevention and control of plant diseases, pest control；(5) pinch and smear wooden fork；
(6) it is ripe to pluck.Wherein, nursery, Transplanting Density, fertilising and pouring, the prevention and control of plant diseases, pest control, pinch and smear wooden fork and the ripe step such as pluck
Carry out according to general farming.
For the special transplanting medium formula of flue-cured tobacco cultivars Zhongyan-100：160 parts of Hepar Bovis seu Bubali soil；80 parts of sand soil；Purple soil 60
Part；20 parts of Calx；40 parts of chestnut soil；60 parts of brown soil；80 parts of river sand；Also include 50 parts of humic acidss.The mixing of above-mentioned formula is equal
The even special transplanting medium obtained final product for flue-cured tobacco cultivars Zhongyan-100.
Described humic acidss are prepared via a method which to obtain：
(1) it is 120 parts of pig manure, 90 parts of chicken manure, 70 parts of Pericarppium arachidis hypogaeae, 70 parts of Testa oryzae, 40 parts of straw, 40 parts of mixing of wood flour are equal
It is even；
(2) microbial inoculum is added in the raw material of step (1) mix homogeneously；Described microbial inoculum includes aspergillus niger, aspergillus oryzae, Herba Medicaginiss
Root nodule bacteria, bacillus subtilises；In raw material, the consumption of the aspergillus niger is 4x109Individual/gram, the consumption of the aspergillus oryzae is
2x109Individual/gram, the consumption of the rhizobium melioti is 0.5x109Individual/gram, the consumption of the bacillus subtilises is 1x109Individual/
Gram；
(3) compost obtains final product described humic acidss for 30 days at 50～55 DEG C.
The implantation methods of the flue-cured tobacco cultivars Zhongyan-100 of embodiment 3
Step：(1) nursery；(2) transplant；Transplant into for the special transplanting medium of flue-cured tobacco cultivars Zhongyan-100, using list
Ridge is planted, a height of 30cm in ridge of the special transplanting medium；(3) apply fertilizer and pour；(4) prevention and control of plant diseases, pest control；(5) pinch and smear wooden fork；
(6) it is ripe to pluck.Wherein, nursery, Transplanting Density, fertilising and pouring, the prevention and control of plant diseases, pest control, pinch and smear wooden fork and the ripe step such as pluck
Carry out according to general farming.
For the special transplanting medium formula of flue-cured tobacco cultivars Zhongyan-100：200 parts of Hepar Bovis seu Bubali soil；100 parts of sand soil；Purple soil
60 parts；30 parts of Calx；60 parts of chestnut soil；40 parts of brown soil；100 parts of river sand；Also include 70 parts of humic acidss.By the mixing of above-mentioned formula
Uniformly obtain final product the special transplanting medium for flue-cured tobacco cultivars Zhongyan-100.
Described humic acidss are prepared via a method which to obtain：
(1) it is 120 parts of pig manure, 90 parts of chicken manure, 70 parts of Pericarppium arachidis hypogaeae, 70 parts of Testa oryzae, 40 parts of straw, 40 parts of mixing of wood flour are equal
It is even；
(2) microbial inoculum is added in the raw material of step (1) mix homogeneously；Described microbial inoculum includes aspergillus niger, aspergillus oryzae, Herba Medicaginiss
Root nodule bacteria, bacillus subtilises；In raw material, the consumption of the aspergillus niger is 4x109Individual/gram, the consumption of the aspergillus oryzae is
2x109Individual/gram, the consumption of the rhizobium melioti is 0.5x109Individual/gram, the consumption of the bacillus subtilises is 1x109Individual/
Gram；
(3) compost obtains final product described humic acidss for 30 days at 50～55 DEG C.
The tobacco sensory quality evaluation of embodiment 4
Experimental subject：1～3 kind of embodiment plants the Nicotiana tabacum L. for obtaining.
With reference to Wang Yanting et al., (Wang Yanting, Xie Jianping, Li Zhihong are edited for evaluation methodology《Chinese tobacco planting regionalization》Science
Publishing house Beijing 2010,24-46) result of study, it is determined that based on YC/T138-1998, with 9 points of systems to every Sensory quality index
Assignment, assignment method is shown in Table 1.
The quality of tobacco of table 1 evaluates each index assignment method of former cigarette aesthetic quality
Sensory evaluating smoking constitutes committee of smokeing panel test (10 people) by the expert that smokes panel test.Committee smoke panel test according to YC/T 138-1998 (cigarettes
Grass and tobacco product sensory evaluation method) and《Quality of tobacco style characteristic sensory evaluation method (original text on probation)》Will Deng technological document
Ask and tobacco sample is smoked panel test, given a mark and is described.Reject to evaluate score value and exceed the member of smoking of meansigma methodss 20% and smoke panel test data, meter
The each metrics evaluation average mark of each member of smoking of tobacco sample is calculated as each index score value of sample.Appraisal result is shown in Table 2.
The Nicotiana tabacum L. of table 2 original cigarette aesthetic quality's smoking result
As can be seen from Table 2, the cigarette that embodiment 1～3 is prepared in Nicotiana tabacum L. original cigarette aesthetic quality smokes panel test experiment
The index evaluating results such as the aroma quality of leaf, perfume quantity, miscellaneous QI, zest and pleasant impression are excellent, indices all more than 7.5 points,
The optimal level of Nicotiana tabacum L. is all reached, wherein it is optimal that the quality of tobacco for obtaining is planted with a kind of embodiment.This explanation, in institute of the present invention
Stating soil can significantly improve the flavor quality of flue-cured tobacco cultivars Zhongyan-100.
The tobacco leaf chemical composition of embodiment 5 is determined
Test object：1～3 kind of Example is planted the Nicotiana tabacum L. middle part for obtaining and is determined.
Determining composition is：Total nitrogen (YC/T161-2002), total nicotine (GB/T23225-2008), total sugar (YC/T159-
2002), candy alkali ratio and nitrogen base ratio are used as the evaluation index for evaluating tobacco leaf chemical composition harmony.Concrete measurement result is shown in Table
3。
The tobacco leaf chemical composition analysis result of table 3
In sound tobacco is assert, the content range of reducing sugar is 16～18%, the content range of nicotine is 1.5～
2.3%, the content range of total nitrogen is 1.5～3.0%, reducing sugar/total sugar ratio>85%.Reduction is can be seen that from data in table 3
Sugar, nicotine, the content of total nitrogen each fall within the content range of sound tobacco, and wherein reducing sugar/total sugar ratio is implemented more than 89%
Nicotiana tabacum L. ratio highest described in example 1, reaches 96%.These numerical value absolutely prove the plantation flue-cured tobacco product in soil of the present invention
Planting Zhongyan-100 can significantly improve its quality.
Additionally, inventor's research finds that sugared alkali ratio is the important parameter for affecting style, sugared alkali is more special than the style of higher Nicotiana tabacum L.
Color is difficult to project, and the sugared alkali ratio of the Zhongyan-100 Nicotiana tabacum L. for obtaining is planted in soil of the present invention less than 10, in being conducive to
The style of the Nicotiana tabacum L. of cigarette 100 is projected.
Claims (9)
1. a kind of implantation methods for improving flue-cured tobacco cultivars Zhongyan-100 quality of tobacco, comprising nursery, transplanting, apply fertilizer and pouring, disease pest
Evil is prevented and treated, pinches and smear wooden fork, ripe harvesting step；Characterized in that, by flue-cured tobacco cultivars Zhongyan-100 seedling replanting in transplant step
Special transplanting medium to flue-cured tobacco cultivars Zhongyan-100 is planted；The special transplanting medium bag of described flue-cured tobacco cultivars Zhongyan-100
Containing following composition：
160～200 parts of Hepar Bovis seu Bubali soil；80～100 parts of sand soil；40～60 parts of purple soil；20～30 parts of Calx；Chestnut soil 40～60
Part；40～60 parts of brown soil；80～100 parts of river sand；50～70 parts of humic acidss.
2. it is according to claim 1 improve flue-cured tobacco cultivars Zhongyan-100 quality of tobacco implantation methods, it is characterised in that institute
The special transplanting medium of the flue-cured tobacco cultivars Zhongyan-100 stated includes following composition：
180 parts of Hepar Bovis seu Bubali soil；90 parts of sand soil；50 parts of purple soil；25 parts of Calx；50 parts of chestnut soil；50 parts of brown soil；River sand 90
Part；60 parts of humic acidss.
3. implantation methods for improving flue-cured tobacco cultivars Zhongyan-100 quality of tobacco according to claim 1, it is characterised in that roasting
Single ridge or double ridge cultivation are carried out in the special transplanting medium of tobacco kind Zhongyan-100 seedling replanting to flue-cured tobacco cultivars Zhongyan-100, it is described
A height of 25～the 35cm in ridge of special transplanting medium.
4. implantation methods for improving flue-cured tobacco cultivars Zhongyan-100 quality of tobacco according to claim 3, it is characterised in that roasting
Single ridge or double ridge cultivation are carried out in the special transplanting medium of tobacco kind Zhongyan-100 seedling replanting to flue-cured tobacco cultivars Zhongyan-100, it is described
The a height of 30cm in ridge of special transplanting medium.
5. it is according to claim 1 improve flue-cured tobacco cultivars Zhongyan-100 quality of tobacco implantation methods, it is characterised in that institute
The humic acidss stated are prepared by the method for comprising the steps of：
(1) by 100～150 parts of pig manure, 80～100 parts of chicken manure, 60～80 parts of Pericarppium arachidis hypogaeae, 60～80 parts of Testa oryzae, straw 30～50
Part, 30～50 parts of mix homogeneously of wood flour；
(2) microbial inoculum is added in the raw material of step (1) mix homogeneously；
(3) compost obtains final product described humic acidss for 10～40 days.
6. it is according to claim 5 improve flue-cured tobacco cultivars Zhongyan-100 quality of tobacco implantation methods, it is characterised in that step
Suddenly by 120 parts of pig manure, 90 parts of chicken manure, 70 parts of Pericarppium arachidis hypogaeae, 70 parts of Testa oryzae, 40 parts of straw, 40 parts of mix homogeneously of wood flour in (1).
7. it is according to claim 5 improve flue-cured tobacco cultivars Zhongyan-100 quality of tobacco implantation methods, it is characterised in that step
Suddenly the microbial inoculum described in (2) includes aspergillus niger, aspergillus oryzae, rhizobium melioti, bacillus subtilises.
8. it is according to claim 5 improve flue-cured tobacco cultivars Zhongyan-100 quality of tobacco implantation methods, it is characterised in that step
Suddenly (2) in the feed, the consumption of the aspergillus niger is 4x109Individual/gram, the consumption of the aspergillus oryzae is 2x109Individual/gram, the lucerne
The consumption of Mu root nodule bacteria is 0.5x109Individual/gram, the consumption of the bacillus subtilises is 1x109Individual/gram.
9. it is according to claim 5 improve flue-cured tobacco cultivars Zhongyan-100 quality of tobacco implantation methods, it is characterised in that step
Suddenly (3) compost 30 days at 50～55 DEG C.
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| CN106718273A (en) * | 2016-12-02 | 2017-05-31 | 中国烟草总公司广东省公司 | A kind of special transplanting medium formula for flue-cured tobacco cultivars Zhongyan-100 |
| CN109258038A (en) * | 2018-11-19 | 2019-01-25 | 云南省烟草农业科学研究院 | A kind of fertilizing method optimizing junior tobacco leaf sugar alkali ratio |
| CN113207601A (en) * | 2021-05-17 | 2021-08-06 | 云南省烟草公司文山州公司 | Method for improving tobacco nicotine yield per unit land area |
| CN113207601B (en) * | 2021-05-17 | 2023-08-29 | 云南省烟草公司文山州公司 | Method for improving nicotine yield of tobacco in unit land area |
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