78results about How to "Chemical Composition Harmonization" patented technology

The invention relates to a fertilizer capable of improve the tobacco soil and promote the growth of roots. The fertilizer comprises the following components by weight percent: 60-90% of humus type organic carrier, 4-10% of rooting powder or root growth promoter, 2-5% of plant growth hormone, 2-5% of potassium sulfate and 2-10% of secondary element / trace element fertilizer. By using the fertilizerof the invention, the soil can be improved, the soil organic matters can be increased, the soil organic and inorganic composites can be improved, the water-stable aggregate structure is easy to form,the supply of soil nutrients can be coordinated, the growth of plant roots can be promoted, the effectiveness of nutrients in soil can be increased, the potassium content of plant tissues can be increased, the organic matters of the tobacco soil can be increased, the effectiveness of nutrients in the tobacco soil can be increased, the growth of tobacco can be promoted, the potassium content of tobacco leaves can be increased, the quality of the flue-cured tobacco leaves can be improved, and the fragrance of tobacco leaves can be increased. By using a defined amount of the fertilizer of the invention, the absorption of the flue-cured tobacco to heavy metals such as arsenic can be reduced, the heavy metal enrichment factor of the flue-cured tobacco can be reduced and the contents of heavy metals such as arsenic in soot and smoke can also be reduced.

The invention discloses a preparation method and application of a tobacco endogenous spice of Boshan aromatic tobacco. According to the preparation method, the crushed Boshan aromatic tobacco is placed in an extra-high pressure extracting tank for extra-high pressure extraction and then is subjected to column separation by using macroporous resin, and finally, the tobacco endogenous spice of the Boshan aromatic tobacco is obtained. The spice is clear in appearance, and thus the spice is more suitable for being added in cigarettes to bring remarkable effect of improving the quality of cigarettes. The preparation method disclosed by the invention is simple and practical, convenient for operation and lower in cost; resin can be repeatedly used; the time is greatly saved; the value of the extracted effective aroma components is high; and tobacco raw materials are utilized more fully.

The invention relates to a tobacco field soil improving method. The method comprises the following steps: green manure is applied to soil, the green manure is ploughed down 30-45d before next year tobacco seedling transplantation, and biomass charcoal is applied to soil 15-20d after the green manure is ploughed down. The green manure and the biomass charcoal are combined to restore tobacco field soil, so the content of organic matters in soil is improved, the water retention property of the soil is improved, the growth of roots in the earlier growing stage of tobacco plants is promoted, and early and fast growth of the tobacco plants is promoted; and the method also has the advantages of increase of the content of tobacco leaves, increase of the proportion of high-and-middle tobacco leaves, increase of the output value of the tobacco leaves, improvement of the quality of the tobacco leaves, coordination of chemical components, increase of the fragrance and the oil content of the tobacco leaves, improvement of the smoking quality of the tobacco leaves, reduction of the application amount of chemical fertilizers, and improvement of the utilization rate of the fertilizers.

The invention discloses a curing process of flue-cured tobacco and belongs to the technical field of the curing technology of tobacco leaves. According to the curing characteristic of the leaves of the zhongyan 103, the temperature and the humidity, the curing process of tobacco leaf of the invention divides the whole process of the curing of tobacco leaves into five steps, namely firing-up and temperature control, yellowing of tobacco leaves, transition, colour setting of tobacco leaves and stem-drying of tobacco leaves, wherein the five steps have the three stages of yellowing stage, colour setting stage and stem-dring stage, thus the quality of the cured tobacco leaves is greatly increased. The curing process has high maneuverability and can obviously increase the tobacco leaf quality and high-class leaf ratio of flue-cured tobacco and reduce the rate of green tobacco; the ratios of high-class leaf and middle-class leaf in the cured tobacco leaves are increased by more than 10.65%, the ratio of the tobacco leaf with different colors is reduced by more than 1.67%, the ratio of tobacco leaves of which upper and middle parts are green is reduced by more than 7%; the output value is increased by more than 11.75%; and the cured tobacco leaves are bright-coloured and oily, the chemical composition tends to be coordinated, the sugar-nicotine ratio, the nitrogen-nicotine ratio and the total nicotine all meet the chemical composition quality evaluation standard of the crude tobacco; and the style characteristic of the zhongyan 103 is fully displayed, and the incomes of tobacco farmers are increased.

The invention discloses a baking method for upper leaves of flue-cured tobacco. The baking method comprises the following steps: outbreak of a fire, a yellowing stage, a color fixing stage and a stem drying stage; and before baking, the material needs to be processed, including material collecting, tobacco weaving and tobacco filling. According to the invention, the baking condition of the upper leaves of the flue-cured tobacco can be controlled by controlling the heating rate and the temperature stabilizing time in baking, thus achieving an optimal effect. The baking method is capable of effectively reducing the labor strength in tobacco leaf harvest, promoting degradation and transformation of macromolecule substances in tobacco leaves, promoting the coordination of aroma substances and internal chemical components, improving aroma taste, reducing the ash hanging and stiffing proportion of upper leaves, and improving appearance quality.

The invention discloses a fine fertilizer application method for flue-cured tobaccos K326. Fine fertilizer application for the flue-cured tobaccos K326 is realized by measuring the alkali-hydrolyzale nitrogen content, the effective phosphorous content and the effective potassium content, calculating the using amount of nitrogen, and then calculating the using amount of phosphorous and the using amount of potassium according to a fertilizer application ratio to finally obtain the amount of nitrogen, phosphorous and potassium fertilizers by a base fertilizer and topdressing combination mode, so that a certain yield of high-quality tobaccos can be obtained. According to the fine fertilizer application method, the most economic fertilizer application amount can be calculated, so that loss of redundant nutrients can be reduced, and the cost can be lowered to a certain extent; on the premise that the yield and the quality of the flue-cured tobaccos K326 are not affected, a requirement on the growth of the flue-cured tobaccos K326 is met under the least using amount of nitrogen, phosphorous and potassium. The tobaccos obtained by the method provided by the invention are high in quality; chemical components in the tobaccos are coordinated; the flue-cured tobaccos are fresh in color, mesophyll tissues are dense, leaves are high in toughness, the oil content is large, and requirements of a cigarette enterprise can be met.

The invention discloses a composite type foliage fertilizer for cured tobacco and relates to the field of fertilizer. The foliage fertilizer is prepared from potassium nitrate, magnesium sulfate, borax, ammonium molybdate, NAA, amino acid, humic acid and a spreader which are dissolved in water. The composite type foliage fertilizer has the characteristics of having comprehensive nutrition, remarkably promoting the leaf-opening of the upper leaves, improving the quality of tobacco leaves and the like, can be widely used in tobacco-rice rotation regions in south China where soil commonly lacks magnesium, boron, molybdenum and other microelements, and is the foliage fertilizer special for the cured tobacco, which has good application effect.

The invention belongs to the technical field of organic-inorganic compound fertilizers special for cured tobacco, and relates to an organic-inorganic compound fertilizer prepared specific to the special nutritional need and absorption rule of cured tobacco. The organic-inorganic compound fertilizer is prepared by fully and uniformly mixing an inorganic compound fertilizer (containing 10 percent of N, 10 percent of P2O5 and 25 percent of K2O) with EM (Effective Microorganism)-fermented earthworm cast (dairy manure) in the weight part ratio (3-7):(7-3). 100 kilograms of the organic-inorganic compound fertilizer are applied to every mou of tobacco field, and 70 kilograms of base fertilizer are applied to every mou of tobacoo field. The application method comprises the following steps of: performing hole application before transplanting of tobacco seedlings; performing top application by 30 kilograms / mou; and performing mixed application 25-28 days after transplanting. The organic-inorganic compound fertilizer has the advantages of persistent fertilizer effect, balanced nutrition and capabilities of improving the soil structure and water holding capacity of a tobacco field and enhancing the disease resistance of cured tobacco; the application method is consistent with the nutritional need and nutritional element absorption rule of cured tobacco; and by adopting the application method, the yield of cured tobacco can be increased, and the quality of tobacco leaves is improved.

The invention belongs to the technical field of a special biofertilizer for tobaccos, and relates to a no-pollution organic biofertilizer capable of inhibiting continuous cropping obstacle of flue-cured tobaccos. The organic biofertilizer is prepared by carrying out secondary biofermentation on the following raw materials in parts by weight: 5-8 parts of EM soil conditioner, 60-63 parts of wormcast (cattle), 0.5-1 part of EM stock solution and 34.5-28 parts of chlorine-free water. The invention has the advantages of high fertilizer efficiency, no adverse or side effect on soil and no pollution, can improve the structure and water retentivity of the soil, enhances the anti-disease capacity of flue-cured tobaccos, enhances the photosynthesis of flue-cured tobaccos, greatly improves the quality of tobaccos, and can obviously inhibit continuous cropping obstacle of flue-cured tobaccos. The invention has wide market prospects and good social and economic benefits in flue-cured tobacco production.

The invention discloses a curing process of a flue-curing barn, and belongs to the technical field of a tobacco curing. The process comprises the following steps: an ignition and temperature control stage: heating and roasting by utilizing an air source heat pump unit independently; tobacco leaf yellowing stage: heating and roasting by utilizing the air source heat pump unit independently; tobacco leaf color fixing stage: heating by utilizing the air source heat pump unit independently when a dry-bulb temperature is between 44 and 50 DEG C, and heating by using a coal burning boiler independently when the dry-bulb temperature rises to over 50 DEG C; and a tobacco leaf stem drying stage: heating by using the coal burning boiler independently. The curing process has the advantages of safetyand insurance, strong operability, stability of tobacco leaf color fixation, good leaf shrinkage, great improvement of flavor quantity of tar and tobacco leaves, is simple to operate; and the technical scheme of the roasting process has strong operability, so that the tobacco leaf curing quality and superior leaf ratio can be remarkably improved, the tobacco leaf dry matter consumption is reduced, and the roasting effects of saving energy, reducing emission, increasing quality and improving efficiency can be achieved.

The invention discloses active tea cream high in extraction rate and complete in beneficial component preservation and a preparation method thereof, and belongs to the technical field of tea leaf deep processing. The active tea cream comprises the following components by weight: 30 to 50 % of tea polyphenol, 20 to 30 % of tea polysaccharide, 6 to 10 % of free amino acid and 3 to 4 % of caffeine, and the sum of the weight percentage of the components is not larger than 100 %. The preparation method comprises processes of stocking, extracting, dirt-removing, condensing and forming: placing pulverized tea leaves in an extracting jar, adding an extractive at the temperature of 40 to 60 DEG C according to the feed-liquid ratio of 1: (10 to 15), extracting once or twice, extracting for 10 to 20 min every time, and collecting low temperature extract liquid; adding an extractive at the temperature of 60 to 80 DEG C according to the feed-liquid ratio of 1: (5 to 10), extracting once or twice, extracting for 10 to 20 min every time, and collecting high temperature extract liquid, mixing the extract liquid gained after double extraction according to certain proportion to gain total extract liquid, and gaining the active tea cream after dirt-removing, condensing and drying. The preparation method is high in extraction rate, complete in beneficial component preservation and simple in manufacturing technology; the prepared active tea cream is rich in nutrition, strong in fragrance and mellow in taste, and has a good market popularizing value.

The invention discloses a tobacco field soil improvement method for effectively improving the quality of tobacco leaves. The tobacco field soil improvement method comprises the following steps: 1) selection of areas; 2) selection of tobacco fields; 3) ridges and ponds; 4) base fertilizer application ; 5) Farmyard manure mixing pond; 6) Top dressing application. The present invention treats the soil of the tobacco field through farmyard manure mixing ponds, and the chemical components of the obtained tobacco leaves are more coordinated, the tobacco leaf smoking evaluation score is as high as 82.5 or more, the aroma is more prominent, the concentration is higher, and the strength is stronger, and it can be used as a method for improving sticky soil. An effective way, while the total fertilization rate of the improved soil of the present invention is 90% of the conventional fertilization rate, which effectively reduces the fertilization rate and reduces the cost.

The invention discloses a flue-cured tobacco baking method, and belongs to the technical field of tobacco blending and making. According to tobacco baking properties of a flue-cured tobacco variety of Yun tobacco 105, the whole tobacco baking process is a three-stage seven-step tobacco baking process including treatments at early stage of yellowing, middle stage of yellowing, late stage of yellowing, early stage of color fixing, late stage of color fixing, early stage of stem drying and later stage of stem drying according to the temperature and humidity, and the quality of the baked tobacco is greatly improved; the baking process is high in operability and can obviously improve the tobacco quality of flue-cured tobacco, increase the ratio of first-class tobacco and decrease the smoke rate; after baking is conducted, the ratio of first-class tobacco and middle-grade tobacco in the tobacco is increased by 10.65% or above, the ratio of variegated tobacco is decreased by 1.67% or above, and the greenish ratio of the tobacco on the upper-middle part is decreased by 7% or above; the production value is increased by 11.75% or above, the baked tobacco is bright in color and luster and oily, chemical components tend to coordination, the sugar-nicotine ratio, nitrogen-nicotine ratio and total nicotine all meet the quality evaluation criteria of original tobacco chemical compositions, the style and characteristics of Yun tobacco 105 can be fully embodied, and the income of tobacco growers is increased.

The invention provides a flue-cured tobacco cultivation method. The method comprises the following steps: firstly selecting flue-cured tobacco planting base land, ridging and applying a base fertilizer to the flue-cured tobacco planting base land, and water after applying the fertilizer so that the fertilizer is wet; selecting the date with the preference temperature and transplanting the seedlings, wherein the transplanting density is that the line spacing is 110-120 cm and the row spacing is 50 cm; applying the additional fertilizer to the transplanted seedlings, and covering by using a mulch film according to the local climate, film-uncovering after 30-35 days of transplanting; carrying out the thin intertillage treatment in the seedling stage, the root extending stage and the rosette stage, after 25-35 days of transplanting the seedlings, and carrying out the ridging treatment after the flue-cured tobacco seedlings grow 13-14 leaves; and topping and cutting branches, and then harvesting after the seedlings are grown. The method is used for promoting the early growing and quick sprouting after transplanting the seedlings, the internal chemical components of the tobacco leaves are more coordinated, the quality of the whole tobacco leaves is improved, and the economic benefit of the tobacco is improved.

The invention discloses a fertilizing technology for improving potassium content in tobacco variety Yunyan97. The fertilizing technology is a Yunyan97 nitrogen-phosphorus-potassium balanced fertilizing technology, is simple and practical, and aims at improving yield and quality and especially the potassium content by adjusting the dressing ratio of nitrogen phosphorus potassium fertilizers.

The invention discloses an organic fertilizer for tobacco with an appropriate scale. The organic fertilizer comprises the following raw materials by weight: 1000 parts of straws containing 55%-65% of water, 5.25-45 parts of oil cake and 0.035-1.35 parts of microbial inoculum. According to the preparation method of the organic fertilizer, common things and wastes in existing villages are used as raw materials for preparing the organic fertilizer, a main material adopts crop straws which can not be effectively utilized and is usually incinerated or discarded, an auxiliary material is the oil cake popularized in the villages and bacterium powder convenient to buy in a market, the fermentation speed of the crop straws can be increased by the bacterium powder, few bacteria can not be brought during the usage of the bacterium powder, and the oil cake has the effects of providing nutrients, and increasing aroma of tobacco, oil content, the proportion of superior and medium tobacco and the like. Test results show that average price, the proportion of superior tobacco and the proportion of medium tobacco can be respectively increased by 0.2 yuan / kg, 1.5% and 4% by applying the organic fertilizer.

The invention discloses special compound fertilizer for Zimbabwe flue-cured tobacco KRK26 and a fertilization method thereof. The weight ratio of nitrogen, phosphorus and potassium in the compound fertilizer is (7.5-8.5): (9.5-10.5): (31-33). The compound fertilizer disclosed by the invention has the advantages that the proportion of high-quality Zimbabwe flue-cured tobacco KRK26 can be increased, the length and width of lumbar leaves are improved, and the blackleg resistance is improved.

The invention belongs to the technical field of tobacco processing, and particularly relates to a flue-curing method for flue-cured tobacco NC87 tobacco leaves. The method comprises the steps that purple soil is planted to obtain lower tobacco leaves, middle tobacco leaves and upper tobacco leaves of NC87 to be flue-cured in different curing barns separately, the temperature is increased slowly inthe tobacco leaf yellowing period inside the curing barns, frequency conversion control is performed on a circulating fan adopted in different flue-curing stages of the yellowing period, the fixationperiod and the stem-drying period, and the whole flue-curing stage is divided into ten small stages; meanwhile, the temperature is increased at low speed in the yellowing period, and the temperatureof the yellowing period is controlled to be 389 DEG C or below; the high and medium temperature yellowing steady temperature period is prolonged by 12 h, and the fixation middle and later period steady temperature period is prolonged by 12 h; finally, the NC87 obtained after flue-curing is superior in appearance and quality, chemical components inside the tobacco leaves can be coordinated, the tobacco leaf sensory evaluation quality is improved, and economic benefits are improved.

The invention relates to a method for paddy-upland rotation cropping of tobacco and rice and in-situ restoration of mineral nutrition. The method comprises the following process: tobacco planting: transplanting tobacco after fertilization; tobacco management: carrying out weeding, disinsection, irrigation and fertilization; tobacco harvesting: harvesting tobacco after the tobacco is matured; tobacco field management: subjecting harvested tobacco straw to harmless treatment, and covering a field with all treated straw so as to realize in-situ restoration of mineral nutrition; rice planting: transplanting rice seedlings, carrying out management for the field after transplanting, and carrying out harvesting after the rice is matured; and paddy field management: covering the paddy field with all harvested rice straw so as to realize in-situ restoration of mineral nutrition. The method provided by the invention has the following advantages: rice straw and husks are used as fertilizers and completely used for tobacco planting, or the tobacco straw is used as a fertilizer and completely used for rice planting, so the loss of elements can be effectively prevented; reutilization of the elements and circulation and balance of an ecological system are guaranteed; the environment can be easily protected; and application of a chemical fertilizer can be reduced.

The invention belongs to the technical field of tobacco processing, and particularly relates to a flue-curing method for flue-cured tobacco NC55 tobacco leaves. The method comprises the steps that brunisolic soil is planted to obtain lower tobacco leaves, middle tobacco leaves and upper tobacco leaves of NC55 to be flue-cured in different curing barns separately, the temperature is increased slowly in the tobacco leaf yellowing period inside the curing barns, frequency conversion control is performed on a circulating fan adopted in different flue-curing stages of the yellowing period, the fixation period and the stem-drying period, and the whole flue-curing stage is divided into ten small stages; meanwhile, the temperature is increased at low speed in the yellowing period, and the temperature of the yellowing period is controlled to be 38 DEG C or below; the high and medium temperature yellowing steady temperature period is prolonged by 12 h, and the fixation middle and later period steady temperature period is prolonged by 12 h; finally, the NC55 obtained after flue-curing is superior in appearance and quality, chemical components inside the tobacco leaves can be coordinated, thetobacco leaf sensory evaluation quality is improved, and economic benefits are improved.

The invention discloses a fermentation method for removing peculiar smell of tobacco leaves of sun-cured tobacco and application of the tobacco leaves in heated cigarettes. The fermentation method comprises the steps of airing, modulating, sorting to-be-bundled tobacco leaves of sun-cured tobacco according to types, uniformly spraying edible white spirit of 50 degrees or above on the surfaces of petioles, or directly dipping the petioles in the edible white spirit of 50 degrees or above, bundling and wrapping, and storing in a clean, odorless and shady inner room for 40 days or above. In allusion to the flavor quality requirements of heated cigarettes on the tobacco leaves of the sun-cured tobacco raw material, by adopting the fermentation method disclosed by the invention, the peculiar smell and mould of the tobacco leaves generated by the traditional fermentation method can be effectively removed, the tobacco leaves are naturally and sufficiently fermented, bright in color and pure in tobacco flavor, and the sensory quality of the sun-cured tobacco used as raw material tobacco for the heated cigarettes is remarkably improved while the flavor characteristic of the sun-cured tobacco is ensured.

The invention discloses a method for improving Yunyan 87 cured tobacco variety. The method comprises the steps of: selecting rose pelargonium Weimulange as a root stock and Yunyan 87 cured tobacco seedling as a scion, grafting by adopting an approach grafting method, and culturing to obtain new plants. According to the invention, the new plants have small variation coefficient of agronomic characters, flourishing root systems, wide applicability, drought resistance and few diseases and pests; particularly, the incidence of mosaic disease and bacterial wilt of Yunyan 87 is obviously reduced; the advantages of the parents are better gathered in the tobacco quality, disease resistance and other characters of the new plants, and the comprehensive characters of the new plants are superior to those of Yunyan 87; the cured tobacco of the new plants is golden yellow in color, high in oil content, loose in structure, moderate in leaf thickness, harmony in chemical ingredients, good in essence quality, enough in essence quantity and light in rose and mint essence; and the new plants have better industrial utilization value.

The invention discloses a method for improving the tobacco quality by the modest extension of a vegetative growth period of flue-cured tobaccos. The method comprises the processes of primed pelleted seeds of flue-cured tobaccos, seeding, seedbed growing, transplanting, growth in field and the like, wherein the seeds germinate again before sowing the primed pelleted seeds of flue-cured tobaccos; the nutritional regulation is performed for the first time 10 days after transplanting in the field, the dosage is 5 kg per acre; the nutritional regulation is performed for the second time 35 days after transplanting in the field, the dosage is 10 kg per acre. The method is convenient for the flue-cured tobaccos to fully absorb nutrients in the vegetative growth period, is more conducive to accumulating dry matters of leaves, improving the chemical components, appearance quality and sensory evaluation of the flue-cured tobaccos and improving the quality of tobaccos by delaying the flower bud differentiation time of the flue-cured tobaccos, extending the vegetative growth period of the flue-cured tobaccos and shortening a reproductive growth period of the flue-cured tobaccos.

The invention relates to a special organic fertilizer for tobacco. The special organic fertilizer comprises the following components in percentage by weight: 40-60% of charcoal, 10-20% of wormcast, 10-20% of humic acid and 10-20% of sesame cake fertilizer, wherein the charcoal is prepared from peanut shells by firing under low-temperature and anoxic conditions. According to the technical scheme, charcoal is mixed with wormcast, humic acid and sesame cake fertilizer. Through charcoal, wormcast, humic acid and sesame cake fertilizer, the carbon-nitrogen ratio of soil is increased, the organic matter content of the soil is increased, the soil fertility of flue-cured tobacco is improved, supply of tobacco nutrition is promoted, and growth and quality improvement of the flue-cured tobacco are promoted. The flue-cured tobacco yield, average price and first-class tobacco leaf proportion can be improved, the flue-cured tobacco output value and economic benefits are increased, chemical components of tobacco leaves are more coordinated, the internal quality of the tobacco leaves is improved, and the sensory quality of the tobacco leaves is remarkably improved.

The invention discloses a carbon-based compound fertilizer with a high potassium utilization rate. The preparation method comprises the following steps: according to nutrient requirements of flue-cured tobacco, preparing a base fertilizer according to a scientific and reasonable proportioning method; preparing a carbon-based compound fertilizer according to a ratio 7:3 of the base fertilizer to biomass charcoal, mixing into an organic adhesive prepared from 2.5% of sodium alga acid, chitosan or wood vinegar, fully and uniformly mixing, and taking out the mixture; preparing spherical particles with the particle size of less than 6mm from the mixture by using a granulator, and drying at a low temperature, thereby obtaining the carbon-based compound fertilizer. The carbon-based compound fertilizer disclosed by the invention has the advantages that (1) the nutrition is comprehensive and rich, one-time topdressing is performed in the uncovered ridging period during flue-cured tobacco cultivation, the operation is convenient, and the yield and output value of the flue-cured tobacco and the ratio between medium and high-grade tobacco leaves can be obviously improved; (2) the release rate of potassium in the fertilizer in soil is retarded, the effectiveness of the potassium is improved, and the potassium content in the tobacco leaves, potassium accumulation in the flue-cured tobacco and the potassium utilization rate in the flue-cured tobacco fertilizer are obviously improved; and (3) the carbon-based compound fertilizer is readily available in raw materials, environment-friendly and safe.

The invention belongs to the technical field of tobacco processing, and particularly relates to a flue-curing method for flue-cured tobacco Guangdong 98 tobacco leaves. The method comprises the stepsthat purple soil is planted to obtain lower tobacco leaves, middle tobacco leaves and upper tobacco leaves of Guangdong 98 to be flue-cured in different curing barns separately, the temperature is increased slowly in the tobacco leaf yellowing period inside the curing barns, frequency conversion control is performed on a circulating fan adopted in different flue-curing stages of the yellowing period, the fixation period and the stem-drying period, and the whole flue-curing stage is divided into ten small stages; meanwhile, the temperature is increased at low speed in the yellowing period, andthe temperature of the yellowing period is controlled to be 38.5 DEG C or below; the high and medium temperature yellowing steady temperature period is prolonged by 12 h, and the fixation middle and later period steady temperature period is prolonged by 12 h; finally, the Guangdong 98 obtained after flue-curing is superior in appearance and quality, chemical components inside the tobacco leaves can be coordinated, the tobacco leaf sensory evaluation quality is improved, and economic benefits are improved.

The invention aims to solve the problems that in China, tobacco in the Huang-Huai-Hai tobacco-growing area is high in chlorine content, non-coordinating in chemical component, poor in tobacco qualityand the like, and provides a cultivation method capable of reducing the content of chlorine in the tobacco in the Huang-Huai-Hai tobacco-growing area. The cultivation method comprises the steps of tobacco field layout optimization, high ridging and deep cultivation, improvement of the type and the using amount of fertilizers, strict control over application of green manure, staged and deep application of the fertilizers, irrigation way optimization and the like. By means of the method, the absorption sources of the chlorine in the tobacco can be reduced from form the origin, the content of thechlorine in the cured tobacco is obviously reduced by 45% or above, the content of the chlorine is lower than 8 g / kg which conforms to the range of the chlorine content of high-quality tobacco, and potassium content of the tobacco is significantly reduced, the chemical components of the tobacco are more coordinating, the combustibility of crude tobacco is obviously improved, offensive odor is reduced, and the aroma quality and the aroma amount are improved. The production value of the tobacco is increased by 8-10%, the incomings of the tobacco per mu are increased by 250-280 yuan, and the incomings of farmers are significantly increased.

The invention belongs to the technical field of a special biofertilizer for tobaccos, and relates to a no-pollution organic biofertilizer capable of inhibiting continuous cropping obstacle of flue-cured tobaccos. The organic biofertilizer is prepared by carrying out secondary biofermentation on the following raw materials in parts by weight: 5-8 parts of EM soil conditioner, 60-63 parts of wormcast (cattle), 0.5-1 part of EM stock solution and 34.5-28 parts of chlorine-free water. The invention has the advantages of high fertilizer efficiency, no adverse or side effect on soil and no pollution, can improve the structure and water retentivity of the soil, enhances the anti-disease capacity of flue-cured tobaccos, enhances the photosynthesis of flue-cured tobaccos, greatly improves the quality of tobaccos, and can obviously inhibit continuous cropping obstacle of flue-cured tobaccos. The invention has wide market prospects and good social and economic benefits in flue-cured tobacco production.

The invention discloses a food-borne lactobacillus for improving the tobacco leaf quality, and a preparation method and application thereof, and belongs to the technical field of application microorganisms. The lactobacillus can be used as the unique nutrition source in the tobacco leaf obtained through the screening from pickled radish; the classification name is Lactobacillus plantarum L15; thepreservation number is CCTCC M 2017459. The L15 bacterium suspension is used for cut tobacco fermentation; the sensory smoking evaluation result shows that after the fermentation, the aroma quality ofthe cigarette is improved; the smoke is soft; the miscellaneous gas, the irritation and the bitter and spicy flavor are reduced; the sour aroma is obvious; the aftertaste is improved; after the fermentation, the major chemical ingredient proportion of the cut tobacco is more harmonious; through the aroma component analysis, the result shows that the total acid (particularly acetic acid), total alcohol and total ester contents in the fermented cut tobacco are increased; the total aldehyde ( particularly 3-methyl-Butanal), total ketone (particular 2-hexanone), total alkene, total benzene and total furan contents are decreased; the cigarette quality is improved.