CN114158570B - Compound agent for reducing stem content of tobacco leaves as well as preparation method and application thereof - Google Patents
Compound agent for reducing stem content of tobacco leaves as well as preparation method and application thereof Download PDFInfo
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- CN114158570B CN114158570B CN202111519128.5A CN202111519128A CN114158570B CN 114158570 B CN114158570 B CN 114158570B CN 202111519128 A CN202111519128 A CN 202111519128A CN 114158570 B CN114158570 B CN 114158570B
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/16—Heavy metals; Compounds thereof
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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
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N33/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic nitrogen compounds
- A01N33/02—Amines; Quaternary ammonium compounds
- A01N33/08—Amines; Quaternary ammonium compounds containing oxygen or sulfur
- A01N33/10—Amines; Quaternary ammonium compounds containing oxygen or sulfur having at least one oxygen or sulfur atom directly attached to an aromatic ring system
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
- A01N37/12—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing the group, wherein Cn means a carbon skeleton not containing a ring; Thio analogues thereof
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/90—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having two or more relevant hetero rings, condensed among themselves or with a common carbocyclic ring system
Abstract
The invention discloses a compound agent for reducing the stem content of tobacco leaves and a preparation method and application thereof. When the compound agent containing 6-benzylaminopurine is prepared, 6-benzylaminopurine is dissolved by hot absolute ethyl alcohol to obtain 6-benzylaminopurine ethanol solution; dissolving two or three components of diethyl aminoethyl hexanoate, lanthanum chloride and yield-increasing amine in water, mixing with the 6-benzylaminopurine ethanol solution, and diluting to a desired concentration with water to obtain a compound agent; when the compound agent without 6-benzylaminopurine is prepared, three components of diethyl aminoethyl hexanoate, lanthanum chloride and yield-increasing amine are dissolved in water, and the water is used for fixing the volume to the required concentration to obtain the compound agent. The compound agent is sprayed on the surfaces of the flue-cured tobacco leaves respectively in the bud stage and the topping stage until the whole leaves are wet, and the test results show that the compound agent can promote the growth and development of the tobacco leaves in the field and reduce the stem content of the tobacco leaves.
Description
Technical Field
The invention relates to a compound agent for reducing the stem content of tobacco leaves and a preparation method and application thereof, belonging to the technical field of agricultural chemicals.
Background
The quality of tobacco leaves directly determines the production cost of cigarettes and the quality of cigarette products. The tobacco stalk content is an important technical and economic index, which refers to the proportion of tobacco stalks in tobacco leaves. The stalk content directly influences the sheet yield of threshing and redrying, and the stalk content is low and the sheet yield is high under normal conditions. The tobacco stem content has close relation with various quality indexes of the tobacco besides directly influencing the economic characteristics of the tobacco, for example, the tobacco stem content is extremely obviously and negatively related to the nicotine content, and is extremely obviously and positively related to the chlorine content. The stem content has negative influence on the sensory quality, the increase of the stem content of the tobacco leaves can also reduce the quality of aroma, so that the tobacco flavor is rough and flat, the wood smell, the miscellaneous gas and the irritation are obviously increased, and the luster, the oil content, the flexibility and the processing resistance of the tobacco leaves are reduced.
The optimal range of the stem content of the flue-cured tobacco is about 22-25% (Chinese tobacco planting division, 2010), the stem content of the lower tobacco leaves is highest, the second tobacco leaves in the middle and the lowest tobacco leaves in the upper tobacco leaves. The average value of the stem content of the tobacco leaves in China in the early 90 s of the last century is kept about 25 percent. In recent years, the stem content of tobacco leaves has a great rising trend, and the average stem content of the tobacco leaves in China is up to more than 30 percent (the stem content of flue-cured tobacco in some tobacco regions is even up to 35 percent) at present. With the increase of the stalk content, the sheet yield of the original tobacco is reduced by more than 5 percent compared with the 90 s of the last century, and the total yield of 3500 ten thousand cigarettes in the whole country is equivalent to 175 ten thousand cigarettes per year. According to investigation, tobacco leaves in all tobacco regions in the country have larger variation of the stem content, the variation of the stem content in different regions has 14 percent difference, in addition, the stem content of domestic flue-cured tobacco is about 4 percent higher than that of foreign flue-cured tobacco, and the excessively high stem content of the flue-cured tobacco has great influence on the development of the cigarette industry in China. Therefore, the research and development of an agricultural chemical which can reduce the stem content of tobacco leaves, improve the leaf yield of the tobacco leaves and increase the yield of the tobacco leaves under a general condition is a technical problem to be solved urgently at present.
CN110294654A discloses a special fertilizer for tobacco, a preparation method and application thereof, wherein the mass percent of inorganic components in the slow release fertilizer is 60-75%; the content of N element in the inorganic component is 8-11 percent, and P is used 2 O 5 The content of P element is 4-9% in terms of K 2 The content of K element is 14-18% in terms of O; the phosphate fertilizer consists of ammonium polyphosphate and monoammonium phosphate in a mass ratio of 1; organic component composed ofThe ratio of the lignin to the decomposed silkworm excrement is 1. According to the special fertilizer for the tobacco, the decomposed silkworm excrement and the lignin in a specific ratio are used as organic components, the ammonium polyphosphate and the monoammonium phosphate in a specific ratio are used as phosphate fertilizers, and a specific amount of inorganic fertilizers are matched, so that the special fertilizer for the tobacco can effectively promote seedling revival and seedling strengthening to early grow on the tobacco, is beneficial to accelerating the growth process properly, prolongs the accumulation time of dry matters, is beneficial to formation of the production quality, improves the upper smoke rate and the upper and middle smoke rate, and properly reduces the stem content.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a compound agent for reducing the stem content of tobacco leaves, in particular to a compound agent for reducing the stem content of middle tobacco leaves and lower tobacco leaves of flue-cured tobacco, which can reduce the stem content of the tobacco leaves under the conventional conditions, improve the yield of the tobacco leaves and increase the yield of the tobacco leaves; therefore, the invention also provides a preparation method of the compound agent.
In order to solve the technical problems, the invention provides a first compound agent for reducing the stem content of tobacco leaves, which is prepared by dissolving three or four components of 6-benzylaminopurine, diethyl aminoethyl hexanoate, lanthanum chloride and yield-increasing amine in a solvent.
The molecular formula of 6-benzylaminopurine is C 12 H 11 N 5 It is a white crystalline powder, poorly soluble in water, slightly soluble in ethanol, abbreviated as 6-BA.
Diethyl aminoethyl hexanoate, a diethylaminoethanol hexanoate ester of formula C 12 H 25 NO 2 Readily soluble in water and soluble in ethanol, abbreviated DA-6.
Lanthanum chloride of the formula LaCl 3 It is white powder, easy to absorb moisture and soluble in water.
The yield-increasing amine, 2- (3, 4-dichlorophenoxy) triethylamine, abbreviated as DCPTA, is readily soluble in water and soluble in organic solvents such as ethanol.
In order to solve the technical problem, the invention provides a second compound agent for reducing the stem content of tobacco leaves, wherein each liter of the compound agent contains the following components: 5-20 mg of 6-benzylaminopurine, 20-100 mg of lanthanum chloride, 20-80 mg of yield-increasing amine and the balance of solvent.
In order to solve the technical problems, the invention provides a third compound agent for reducing the stem content of tobacco leaves, wherein each liter of the compound agent contains the following components: 5-20 mg of 6-benzylaminopurine, 20-100 mg of diethyl aminoethyl hexanoate, 20-80 mg of yield-increasing amine and the balance of solvent.
In order to solve the technical problems, the invention provides a fourth compound agent for reducing the stem content of tobacco leaves, wherein each liter of the compound agent contains the following components: 5-20 mg of 6-benzylaminopurine, 20-100 mg of diethyl aminoethyl hexanoate, 20-100 mg of lanthanum chloride and the balance of solvent.
In order to solve the technical problems, the invention provides a fifth compound agent for reducing the stem content of tobacco leaves, wherein each liter of compound agent contains the following components: 20-100 mg of diethyl aminoethyl hexanoate, 20-100 mg of lanthanum chloride, 20-80 mg of yield-increasing amine and the balance of solvent.
In order to solve the technical problems, the invention provides a sixth compound agent for reducing the stem content of tobacco leaves, wherein each liter of the compound agent contains the following components: 5-20 mg of 6-benzylaminopurine, 20-100 mg of diethyl aminoethyl hexanoate, 20-100 mg of lanthanum chloride, 20-80 mg of yield-increasing amine and the balance of solvent.
In order to solve the technical problems, the invention provides a seventh compound agent for reducing the stem content of tobacco leaves, wherein each liter of compound agent contains the following components: 8-15 mg of 6-benzylaminopurine, 30-80 mg of diethyl aminoethyl hexanoate, 30-70 mg of lanthanum chloride, 20-80 mg of yield-increasing amine and the balance of solvent.
In the seven schemes, 5-20 mg of 6-benzylaminopurine refers to 1L of the compound agent, and the content of 6-benzylaminopurine can be any content of 5-20 mg, such as 5mg, 6mg, 8mg, 10mg, 12mg, 14mg, 16mg, 18mg, 19mg, 20mg or other values in the range of 5-20 mg; the content of the diethyl aminoethyl hexanoate is 20-100 mg in 1L of the compound preparation, such as 20mg, 22mg, 24mg, 26mg, 28mg, 30mg, 35mg, 40mg, 45mg, 50mg, 55mg, 60mg, 65mg, 70mg, 75mg, 80mg, 85mg, 90mg, 95mg, 100mg or other values in the range of 20-100 mg; lanthanum chloride 30-70 mg refers to 1L of the compound agent, the lanthanum chloride content can be any content of 30-70 mg, such as 30mg, 31mg, 33mg, 35mg, 37mg, 39mg, 40mg, 41mg, 45mg, 50mg, 55mg, 60mg, 63mg, 66mg, 69mg, 70mg or other values in the range of 30-70 mg; the yield-increasing amine of 20-80 mg refers to 1L of the compound agent, and the content of the yield-increasing amine can be any content of 20-80 mg, such as 20mg, 25mg, 30mg, 33mg, 35mg, 38mg, 40mg, 45mg, 50mg, 55mg, 60mg, 64mg, 67mg, 70mg, 75mg, 80mg or other values in the range of 20-80 mg.
The seven compound agents for reducing the stem cut rate of the tobacco leaves all use solvents, and the solvents are water or a composition of absolute ethyl alcohol and water. Preferably, the content of the absolute ethyl alcohol in the solvent used by each liter of the compound agent is 30-50 g, and the rest solvent is water.
The content of the absolute ethyl alcohol is 30-50 g, and refers to any value of the content of the absolute ethyl alcohol of 30g, 33g, 36g, 40g, 42g, 45g, 47g or 50g, or 30-50 g.
The application method of the compound agent in reducing the stem content of the tobacco leaves is that the compound agent is sprayed on the surfaces of the cured tobacco leaves in the bud stage and the topping stage respectively until the whole leaves are wet.
According to a preferable scheme of the invention, the compound agent for reducing the stem content of the middle and lower leaves of the flue-cured tobacco uses water as a solvent, and each liter of the compound agent contains the following components: 10mg of 6-benzylaminopurine, 50mg of diethyl aminoethyl hexanoate, 40g of absolute ethyl alcohol, 40mg of yield-increasing amine and the balance of water.
In another preferred scheme of the invention, the compound agent for reducing the stem content of the middle and lower leaves of the flue-cured tobacco uses water as a solvent, and each liter of the compound agent contains the following components: 10mg of 6-benzylaminopurine, 50mg of lanthanum chloride, 40g of absolute ethyl alcohol, 40mg of yield increasing amine and the balance of water.
In another preferable scheme of the invention, the compound agent for reducing the stem content of the middle and lower leaves of the flue-cured tobacco uses water as a solvent, and each liter of the compound agent contains the following components: 50mg of diethyl aminoethyl hexanoate, 50mg of lanthanum chloride, 40mg of yield-increasing amine and the balance of water.
In another preferable scheme of the invention, the compound agent for reducing the stem content of the middle and lower leaves of the flue-cured tobacco uses water as a solvent, and each liter of the compound agent contains the following components: 10mg of 6-benzylaminopurine, 50mg of diethyl aminoethyl hexanoate, 50mg of lanthanum chloride, 40g of absolute ethyl alcohol and the balance of water.
The invention also provides a preparation method of the compound agent for reducing the stem cut content of tobacco leaves, and the preparation method of one of the following schemes is selected according to whether 6-benzylaminopurine is used or not:
scheme I, preparation of a combination of 6-benzylaminopurine containing agents
A. Dissolving 5-20mg of 6-benzylaminopurine in 30-50 g of hot absolute ethanol with the temperature of more than or equal to 30 ℃ to obtain 6-benzylaminopurine ethanol solution; preferably, the temperature of the hot absolute ethyl alcohol is 30-80 ℃, i.e. the absolute ethyl alcohol is heated to any temperature within the range of 30-80 ℃, such as 30 ℃, 35 ℃, 40 ℃, 45 ℃, 50 ℃, 55 ℃, 60 ℃, 65 ℃,70 ℃, 75 ℃ or 80 ℃;
B. dissolving two or three of 20-100 mg of diethyl aminoethyl hexanoate, 20-100 mg of lanthanum chloride and 20-80 mg of yield-increasing amine in water, mixing with the 6-benzylaminopurine ethanol solution, and fixing the volume to 1L with water to obtain a compound agent;
scheme II preparation of a combination of agents not containing 6-benzylaminopurine
Dissolving three components of 20-100 mg of diethyl aminoethyl hexanoate, 20-100 mg of lanthanum chloride and 20-80 mg of yield-increasing ethylamine in water, and fixing the volume to 1L by using the water to obtain the compound agent.
The absolute ethyl alcohol is only used for dissolving the 6-benzylaminopurine after heating, and the absolute ethyl alcohol is not needed when the 6-benzylaminopurine is not used.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
the compound agent for reducing the stem content of the middle and lower leaves of the flue-cured tobacco is subjected to field tests, and test results show that the compound agent has the following beneficial effects that 1, different compound agents are sprayed, and the growth and development of the tobacco leaves in the field can be promoted to a certain extent. 2. The spraying of different compounding agents has the promotion effect of different degrees on reducing the stem content of the flue-cured tobacco.
Detailed Description
The following examples illustrate the invention in detail. The raw materials and various devices used for preparing the compound agent are conventional commercial products, and can be directly obtained by market purchase. The equipment refers to heating equipment, weighing equipment, stirring equipment, containers and the like.
The following examples are illustrative of embodiments of the present invention and are not intended to limit the invention, the scope of which is covered by the claims of the present application.
Example 1
(1) Treatment 1: weighing 10mg of 6-benzylaminopurine, dissolving in 40g of heated absolute ethanol solution, adding a small amount of water, adding 50mg of diethyl aminoethyl hexanoate and 40mg of yield-increasing amine, stirring uniformly, adding water, and keeping the volume to 1L;
(2) And (3) treatment 2: weighing 10mg of 6-benzylaminopurine, dissolving in 40g of heated absolute ethanol solution, adding a small amount of water, adding 50mg of lanthanum chloride and 40mg of yield-increasing amine, stirring uniformly, adding water and fixing the volume to 1L;
(3) And (3) treatment: weighing 50mg of diethyl aminoethyl hexanoate, 50mg of lanthanum chloride and 40mg of yield-increasing ethylamine in water, stirring and fixing the volume to 1L;
(4) And (4) treatment: weighing 10mg of 6-benzylaminopurine to dissolve in 40g of heated absolute ethyl alcohol solution, adding a small amount of water, and then stirring 50mg of diethyl aminoethyl hexanoate and 50mg of lanthanum chloride in water to fix the volume to 1L;
(5) Treatment 5, weighing 10mg of 6-benzylaminopurine to dissolve in 40g of heated absolute ethanol solution, adding a small amount of water, and then stirring 50mg of diethyl aminoethyl hexanoate, 50mg of lanthanum chloride and 40mg of yield-increasing amine in water to a constant volume of 1L;
(6) And (6) treatment: control group 1L clear water;
(7) The drugs contained in each treatment are shown in table 1.
TABLE 1 treatment of the drugs and concentrations (mg/L)
Note: the symbol "/" in the table means that no corresponding component is present.
(8) The compound agent with different treatments is sprayed on the leaf surface in the bud period and the topping period, more than 10 tobacco plants are taken at each test point, and the agronomic characters of the tobacco plants in the stem apex period, the bud period and the dome period (about 7 days after topping and before the first house is flue-cured) are measured. Mainly comprises the steps of taking 10 tobacco plants of plant height, maximum leaf length, leaf width, stem circumference and top leaf length (measured only in the dome period), and measuring and calculating the maximum leaf area of the tobacco plants after the length of the tobacco plants is fixed. In each cell, 2kg of flue-cured tobacco leaves at the leaf positions of 3-5 parts of upper leaves, 9-12 parts of middle leaves and 16-18 parts of lower leaves are taken as test samples. Physical properties were measured. Measurement of physical Properties: leaf length, leaf width, thickness, single leaf weight, water content, stalk content, leaf mass weight, the results are shown in Table 2.
The term "granulation stage, topping stage, tobacco plant length, upper leaf, middle leaf, lower leaf, leaf length, leaf width" is according to tobacco term part 1: tobacco type and tobacco leaf production GB/T18771.1-2015.
The tobacco curing process comprises the following steps: according to the standard of flue-cured tobacco baking technical regulation GB/T232 1-2008.
In the physical characteristic measurement, the measurement methods of the leaf length, the leaf width, the thickness, the single leaf weight, the water content, the stalk content and the leaf quality weight are respectively as follows:
thickness: randomly extracting 10 tobacco leaves with the water content of 16.5 percent or 0.5 percent, respectively measuring the thicknesses of the leaf tips, the leaves and the leaf bases of each tobacco leaf by using an electric thickness meter, and taking the average value of the thicknesses of 30 points as the thickness of the sample.
Single leaf weight: randomly extracting 20 tobacco leaves with the water content of about 15 percent, weighing the weight of each tobacco leaf, and taking the average value as the single leaf weight.
Water content: weighing fresh tobacco leaves, deactivating enzyme at 105 deg.C for 2 hr, drying at 70 deg.C to constant weight, and measuring the weight reduction to calculate the water content of the plant
The peduncle content: randomly extracting 20 pieces of tobacco leaves, balancing the moisture content to 16.5 percent and 0.5 percent, separating mesophyll from main veins, respectively weighing the weights of the tobacco leaves and the tobacco stems, and calculating the stem content according to a formula, wherein the stem content is multiplied by 100 percent, and the stem content is = [ the weight of the tobacco stems/(the weight of mesophyll and the weight of the tobacco leaves) ].
The weight of the leaf is: randomly extracting 20 tobacco leaves with water content of about 15%, randomly selecting one half leaf from each tobacco leaf, equidistantly selecting 5 points along the leaf apex, leaf and leaf base of the half leaf, punching 5 circular small pieces with diameter (D) of 15mm with a circular puncher, placing 50 circular small pieces into a moisture box, baking at 100 deg.C for 2h, cooling for 30min, weighing, and weighing according to formula of weight (g.cm) of the leaf -2 )＝(weight after baking-weight of moisture Box)/[ 50 π (D/2) 2 ]And calculating the weight of the leaf.
TABLE 2 physical index of cured tobacco with different combinations
The physical indexes of the cured tobaccos treated by different stem reducing compound agents are counted respectively (table 2), and the physical indexes of the cured tobaccos applied with different compound agents are different in performance at different positions. For the upper leaves, the length, thickness, single leaf weight and leaf mass weight of the T5 leaves are the largest, the width of the T2 leaves is the largest, the stalk content of each treatment is lower than that of the control, and the stalk content of the upper leaves is T6, T4, T1, T3, T5 and T2 from top to bottom in sequence; for the middle leaves, the leaf length, the single leaf weight and the leaf quality weight are still the T5 maximum, the T4 thickness is the maximum, the T2 is the maximum leaf width, and the stalk content of the middle leaves in each treatment is T6, T1, T2, T3, T4 and T5 from top to bottom. And the stem content of the lower leaves of each treatment is T6, T1, T3, T4, T2 and T5 from top to bottom in sequence. In conclusion, the stem content of the flue-cured tobacco can be reduced to different degrees by spraying different compound plant growth regulators.
(9) The agronomic traits of the flue-cured tobacco in the bud period (shown in table 3) and the agronomic traits of the flue-cured tobacco in the dome period (shown in table 4) after the treatment of different compound agents are respectively counted, wherein each index is the average value of more than ten plants. The agronomic traits of the flue-cured tobacco comprise plant height, leaf number, maximum leaf length, maximum leaf width, stem circumference and maximum leaf area, and the measuring method of the agronomic traits is according to a tobacco agronomic trait investigation method YC/T142-1998.
TABLE 3 exhibiting the agronomic traits of the bud stage
TABLE 4 agronomic traits at round top
Comparing table 4 with table 3, the results show that the agronomic performance of the cured tobacco plants in the field period can be different under the condition of applying different compound agents. After the compound agent is sprayed twice, the treatment with the largest change of the stem circumference of the tobacco plant is T2 (which is increased to 10.3cm from 8.2cm in the bud stage) and T4 in the round top stage, while the change of the stem circumference of the T1 is the smallest, and the difference between other treatments is not obvious; the maximum leaf length is also larger in T2 and T4, and smaller in T1 and the control group; the increase in T1 was significantly higher in terms of maximum leaf width than the other individual treatments, while T4 and the control group had little increase; the increase in T2 was greatest for the greatest leaf area, T1 times, and the increase was significantly higher for all treatments than for the control T6. Therefore, the spraying of the compound agent can promote the growth and development of the flue-cured tobacco to a certain extent.
Example 2
The demonstration effect of reducing the tobacco stems of the invention
Demonstration is carried out in Richijie county of Sichuan province, and the soil of the test field is yellow soil. The exemplary flue-cured tobacco variety is Yunyan 87. Demonstration is carried out in the Yimen town, the Taiping town and the Nendongxiang town, and 3 demonstration processes are set: (1) Planting flue-cured tobacco according to a local conventional method without applying a stem reducing compound agent (CK); (2) Spraying a stem-reducing compound agent No. 4 compound agent (T4) in the bud stage and the topping stage respectively; (3) Spraying the compounding agent No. 5 (T5) in the bud stage and the topping stage. By adopting a large-area design, the demonstration area of the Yimen town is 4.6 mu, the demonstration area of the Taiping town is 5.1 mu, the demonstration area of the Nendongxiang town is 4.4 mu, and the row spacing of the plants is 0.5m 1.2m. The application method of the stem-reducing compound agent comprises the steps of spraying the stem-reducing compound agent to 50% of tobacco plants when buds appear for the first time, spraying the stem-reducing compound agent to the top of the tobacco leaves for the second time, and uniformly spraying the front and the back of the tobacco leaves to ensure that each piece of tobacco leaves is sprayed to the compound agent until the compound agent drips from the leaf surfaces. And on the 3 rd day after treatment, selecting representative tobacco plant hanging labels in the field to mark leaf positions, wherein the leaf positions of the upper leaves are 3-5, the leaf positions of the middle leaves are 9-12 and the leaf positions of the lower leaves are 16-18, and 200 plants are selected from each treatment hanging label. After the curing, 2kg of cured tobacco leaves of each processed tabacco was taken as a tobacco leaf sample, the stem content of the tobacco leaves was measured, and the stem content of the upper leaves, the stem content of the middle leaves and the stem content of the lower leaves were measured, respectively, and the results are shown in table 5.
The representative tobacco plant is selected according to the standard that the tobacco plant height is 100-120cm and the leaf number is 18-20.
The flue-cured tobacco process described in embodiment 1 is adopted as the baking process, and the test method for the stem cut percentage adopts the test method described in embodiment 1.
TABLE 5 influence of spraying stem-reducing compounding agent on stem content of flue-cured tobacco
The demonstration results of 3 demonstration points show (table 5), compared with CK, spraying the compound agent No. 4 and 5 reduced the cut stem content of the tobacco leaves to different degrees, wherein the compound agent No. 4 reduced the cut stem content of the upper tobacco leaves by 1.66 percentage points on average (reduction percentage point = CK-4 compound agent upper leaf average cut stem content), reduced the cut stem content of the middle tobacco leaves by 2.14 percentage points, and reduced the cut stem content of the lower tobacco leaves by 2.23 percentage points; wherein, the No. 5 compound agent averagely reduces the stem content of the upper tobacco leaves by 1.92 percent, reduces the stem content of the middle tobacco leaves by 2.72 percent and reduces the stem content of the lower tobacco leaves by 2.83 percent.
The results show that the application of the stem-reducing compound agent can reduce the yield of the stem-containing rate of the tobacco leaves, thereby improving the utilization value of the tobacco leaves, having good economic benefit and great popularization value.
In conclusion, the flue-cured tobacco stem-reducing preparation prepared by compounding common plant growth active substances can effectively reduce the stem-containing rate of tobacco leaves, and has good economic benefit and wide market prospect.
The above embodiments are only for illustrating the present invention and are not to be construed as limiting the present invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and the technical solution of the present invention is covered by the claims of the present invention.
Claims (5)
1. The compound agent for reducing the stem content of tobacco leaves is characterized in that each liter of the compound agent is obtained by dissolving three or four components of 5-20mg of 6-benzylaminopurine, 20-100 mg of diethyl aminoethyl hexanoate, 20-100 mg of lanthanum chloride and 20-80 mg of yield-increasing amine in a solvent.
2. The compound agent for reducing the stem cut content of tobacco leaves according to claim 1, wherein each liter of the compound agent contains the following components: 8-15 mg of 6-benzylaminopurine, 30-80 mg of diethyl aminoethyl hexanoate, 30-70 mg of lanthanum chloride, 20-80 mg of yield-increasing amine and the balance of solvent.
3. The compound agent for reducing the stem content of tobacco leaves according to any one of claims 1 to 2, wherein the solvent is water; or the solvent is a composition of absolute ethyl alcohol and water, the content of the absolute ethyl alcohol in each liter of the solvent used by the compound agent is 30-50 g, and the rest of the solvent is water.
4. The preparation method of the compound agent for reducing the stem content of tobacco leaves is characterized in that the preparation method of one of the following schemes is selected according to whether 6-benzylaminopurine is used or not:
scheme I, preparation of a combination of 6-benzylaminopurine containing agents
A. Dissolving 5-20mg of 6-benzylaminopurine in 30-50 g of hot absolute ethanol with the temperature of more than or equal to 30 ℃ to obtain 6-benzylaminopurine ethanol solution;
B. dissolving two or three of 20-100 mg of diethyl aminoethyl hexanoate, 20-100 mg of lanthanum chloride and 20-80 mg of yield-increasing amine in water, mixing the dissolved two or three with the 6-benzylaminopurine ethanol solution, and fixing the volume to 1L by using water to obtain a compound agent;
scheme II preparation of a combination of agents not containing 6-benzylaminopurine
Dissolving three components of 20-100 mg of diethyl aminoethyl hexanoate, 20-100 mg of lanthanum chloride and 20-80 mg of yield-increasing ethylamine in water, and fixing the volume to 1L by using the water to obtain the compound agent.
5. The use of the combination according to any one of claims 1 to 2 for reducing the stem percentage of tobacco leaves, wherein the combination is sprayed on the surface of the cured tobacco leaves in the bud stage and the topping stage respectively until the whole leaves are moistened.
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