CN114546991A - Method for controlling fertilization quantity of flue-cured tobaccos in mountain tobacco area - Google Patents
Method for controlling fertilization quantity of flue-cured tobaccos in mountain tobacco area Download PDFInfo
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- 235000002637 Nicotiana tabacum Nutrition 0.000 title claims abstract description 121
- 241000208125 Nicotiana Species 0.000 title claims abstract description 110
- 230000004720 fertilization Effects 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 30
- 241000086254 Arnica montana Species 0.000 title claims abstract description 13
- 239000002689 soil Substances 0.000 claims abstract description 64
- 239000003337 fertilizer Substances 0.000 claims abstract description 50
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 45
- 235000015097 nutrients Nutrition 0.000 claims abstract description 32
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 28
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 22
- 229910052700 potassium Inorganic materials 0.000 claims abstract description 22
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 17
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000011574 phosphorus Substances 0.000 claims abstract description 17
- 239000011591 potassium Substances 0.000 claims abstract description 17
- 238000005904 alkaline hydrolysis reaction Methods 0.000 claims abstract description 14
- 238000004458 analytical method Methods 0.000 claims abstract description 11
- 238000005070 sampling Methods 0.000 claims abstract description 7
- 238000004445 quantitative analysis Methods 0.000 claims abstract description 4
- 239000000779 smoke Substances 0.000 claims description 15
- 230000035558 fertility Effects 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 5
- 238000012937 correction Methods 0.000 claims description 3
- 230000001419 dependent effect Effects 0.000 claims description 3
- 238000012417 linear regression Methods 0.000 claims description 3
- 235000021049 nutrient content Nutrition 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- 238000004088 simulation Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 abstract description 8
- 244000061176 Nicotiana tabacum Species 0.000 description 11
- 238000011282 treatment Methods 0.000 description 11
- 230000009418 agronomic effect Effects 0.000 description 5
- 238000011161 development Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 241000196324 Embryophyta Species 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- NMLQNVRHVSWEGS-UHFFFAOYSA-N [Cl].[K] Chemical compound [Cl].[K] NMLQNVRHVSWEGS-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 235000012041 food component Nutrition 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007430 reference method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000002054 transplantation Methods 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
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- G06F16/211—Schema design and management
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C21/00—Methods of fertilising, sowing or planting
- A01C21/007—Determining fertilization requirements
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
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Abstract
The invention provides a method for controlling the fertilization quantity of flue-cured tobaccos in a mountain tobacco area, which comprises the following steps: acquiring the distribution condition of the tobacco field, and collecting a soil sample of a soil cultivation area of the tobacco field; collecting the use quantity data of different types of fertilizers in a tobacco field distribution area, and calculating N, P, K use quantity to obtain fertilization data; acquiring current-year flue-cured tobacco sale economic character data in different areas through flue-cured tobacco purchasing system data; sampling and collecting a soil sample in the tobacco field, and carrying out quantitative analysis on six indexes of pH value, organic matters, total nitrogen, alkaline hydrolysis nitrogen, available phosphorus and quick-acting potassium in the sample to form soil nutrient and nutrient component data; and establishing a database based on the soil nutrient and nutrient component data, the fertilization data and the economic character data of the tobacco leaves, and fitting a fertilization amount formula through the database. Through analysis of nutrient components and physical and chemical properties of different plots, a fertilization quantity control model is constructed for the characteristics of the plots in different areas, and an effective means for fertilization differential management is built.
Description
Technical Field
The invention relates to the technical field of flue-cured tobacco fertilization, in particular to a method for controlling fertilization quantity of flue-cured tobacco in a mountain tobacco area.
Background
In the traditional tobacco field management process, the growth and physiological characteristics of tobacco are combined, and the corresponding fertilizers are applied in different modes according to a certain amount at different periods, so that the fertilizer requirements of the tobacco field are met, the matching between the physiological growth of the tobacco and the industrial availability of the tobacco is realized, the industrial maturity of the field is completed, and the economic value of the tobacco is guaranteed.
In actual planting, the tobacco fields are distributed sporadically, the altitude span is large, the tobacco field types are different greatly, the soil texture, the nutrient components, the chemical properties and the physical properties are different to a certain extent, in the growth process of tobacco plants, the nutrient supply capacity is obviously different, in order to ensure the identity of the industrial use value of flue-cured tobacco in an area, differential management should be carried out on the aspect of fertilizer consumption, and the physiological growth of the tobacco plants is ensured to meet the requirements of industrial cigarette raw materials.
In the actual operation process, due to lack of accurate data and a reference method, the tobacco grower experience is often relied on in the aspect of determining the use amount of different types of fertilizers in a tobacco field, the standard is not uniform, the repeatability of the fertilization experience is poor, technical personnel lack powerful measures and control means on differentiated fertilization management and guidance, the quality and the economic value of tobacco leaves of different farmers still have certain difference, and the tobacco leaves lack powerful competitiveness in the tobacco leaf market competition process.
Disclosure of Invention
In view of the above, the problem to be solved by the present invention is to provide a method for controlling fertilization quantity of flue-cured tobacco in a tobacco zone in a mountainous region, wherein a fertilization quantity control model is constructed for characteristics of different regions through analysis of nutritional components and physicochemical properties of different regions, an effective means for fertilization differentiation management is established, fertilization quantities of different regions and different fields are accurately guided on fertilizer proportioning, and fertilization accuracy and rationalization are achieved.
The invention solves the technical problems through the following technical means: the invention provides a method for controlling the fertilization quantity of flue-cured tobaccos in a mountain tobacco area, which comprises the following steps:
s1, acquiring the distribution condition of the tobacco field, and collecting a soil sample of a tobacco field soil cultivation area;
s2, collecting the use quantity data of different types of fertilizers in the tobacco field distribution area, and calculating N, P, K use quantity to obtain fertilization data;
s3, acquiring current-year flue-cured tobacco sale economic character data in different areas through the flue-cured tobacco purchasing system data;
s4, sampling and collecting soil samples in the tobacco fields, carrying out quantitative analysis on six indexes of pH value, organic matters, total nitrogen, alkaline hydrolysis nitrogen, available phosphorus and quick-acting potassium in the samples, determining the content level of the indexes, and forming soil nutrient and nutrient component data;
s5, establishing a database based on the soil nutrient and nutrient component data, the fertilization data and the tobacco economic character data, and fitting a fertilization amount formula through the database.
Further, step S1 includes: a five-point sampling method is adopted to collect soil samples in a tobacco field soil cultivation area, the soil samples serve as a soil oxidation and physicochemical property analysis data source, the samples are numbered, and longitude and latitude information of the samples is recorded.
Further, step S3 includes selecting the first-class tobacco ratio as an index for measuring the quality of the flue-cured tobacco, and applying the qualified first-class tobacco ratio to the model as a production target.
Further, in step S5, the fertilization data includes fertilizer variety, fertilizer nutrient content, and fertilization amount; the economic characters of the flue-cured tobacco mainly comprise the upper equal tobacco proportion, the middle tobacco proportion, the average price and the output value.
Further, step S5 includes introducing latitude and longitude data of the sample and data of soil nutrients and nutrient components into the ArcGIS 10.2 software to form a dot map layer, then performing a half variance analysis on each index data, and finally interpolating in the ArcGIS 10.2 software by using a Kriging interpolation method based on the half variance parameters and the dot map layer data to obtain a soil space distribution map covering the whole area; integrating the fertilization data into Excel, integrating the economic traits of the flue-cured tobacco into Excel, and drawing a spatial distribution map according to the operation steps of spatial distribution of soil data according to the upper tobacco proportion and the middle tobacco proportion.
Further, the fertilization amount and the soil fertility have a meditation function relationship and have extremely obvious linear correlation with the first-class smoke proportion, and the fertilization formula is as follows: z ═ ax + byc(ii) a Wherein z is the fertilizing amount, x is the first-class smoke proportion, and y is the soil fertility level.
Further, three parts of data of fertilization, soil nutrients and first-class smoke proportion are imported into SPSS 25.0, and a basic formula z of a fertilization formula is combined to be ax + bycAnd performing model simulation by using a non-linear regression tool by taking the first-class smoke proportion and the soil fertility as variables and the fertilizing amount as a dependent variable, and obtaining a rationalized fertilization suggestion simple model as follows:
N＝0.020Y+16.348SN -0.731；
P2O5＝0.021Y+5.122SP -0.065；
K2O＝0.060Y+9.799SK 0.190；
wherein Y is the target first-class smoke proportion, SN、SP、SKRespectively correcting values of alkaline hydrolysis nitrogen, available phosphorus and quick-acting potassium;
wherein the formula of the correction coefficient of the nitrogen, phosphorus and potassium soil nutrients is respectively as follows:
in the formula, SN、SP、SKRespectively are corrected values (unit: kg. mu-1) and S 'of alkaline hydrolysis nitrogen, available phosphorus and quick-acting potassium'N、S′P、S′KRespectively the soil measurement values of alkaline hydrolysis nitrogen, available phosphorus and quick-acting potassium (unit: mg. kg-1), 2.29 is the conversion of P to P2O51.2 conversion of K to K2The conversion factor of O is 0.15 as a unit conversion factor.
According to the technical scheme, the invention has the beneficial effects that:
1. the fertilizer nutrients are controlled more accurately: through the model, the using quantity of N, P, K three types of main bulk fertilizers can be accurately calculated, differential control can be better realized on the using quantity of the fertilizers, and the specific quantity can be accurately obtained.
2. The quantity management is more operational: technicians change the conventional qualitative guidance in the fertilizer quantity guidance and management process, can realize quantitative guidance on the use quantity of different fertilizers in different areas, different plots and different types, and meanwhile, establishes an accurate guidance scheme for the use quantity of the fertilizers in different areas.
3. The management scheme is more reproducible: the method changes the current situation that the growth control difference of tobacco plants is large due to the difference existing in the knowledge of tobacco growers on the growth vigor and the industrial availability of the tobacco plants in the prior art, builds uniform internal connection and rational knowledge between the fertilizer using quantity and the tobacco quality, and builds a uniform foundation for homogenizing the tobacco production quality.
4. The fertilization difference is more controllable: the qualitative measurement is changed into quantitative control according to the difference of the fertilization quantities of different fields in different areas, and the management efficiency of fertilization quantity control is effectively improved due to the quantitative accuracy.
Detailed Description
Hereinafter, embodiments of the present invention will be described in detail. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
The invention provides a method for controlling the fertilization quantity of flue-cured tobaccos in a mountain tobacco area, which comprises the following steps:
s1, acquiring the distribution condition of the tobacco field, and collecting a soil sample of a tobacco field soil cultivation area; a five-point sampling method is adopted to collect soil samples in a tobacco field soil cultivation area, the soil samples serve as a soil oxidation and physicochemical property analysis data source, the samples are numbered, and longitude and latitude information of the samples is recorded.
S2, collecting the use quantity data of different types of fertilizers in the tobacco field distribution area, and calculating N, P, K use quantity to obtain fertilization data;
s3, acquiring current-year flue-cured tobacco sale economic character data in different areas through the flue-cured tobacco purchasing system data; the first-class tobacco proportion is the comprehensive reflection of the yield and the quality of the flue-cured tobacco and is closely related to the soil fertility, the first-class tobacco proportion is selected as an index for measuring the yield and the quality of the flue-cured tobacco, and the qualified first-class tobacco proportion is used as a production target and applied to a model; if the sample No. 1 is selected in the flue-cured tobacco purchasing system, the equal tobacco proportion on tobacco leaves produced by the sample plot is 57.81%, and the soil pH, organic matter, total nitrogen, alkaline hydrolysis nitrogen, available phosphorus and quick-acting potassium are 4.91, 31.17g/kg, 1.64g/kg, 156.08mg/kg, 46.96mg/kg and 287.95mg/kg respectively, and then model construction is carried out based on the data.
S4, sampling and collecting soil samples in the tobacco fields, carrying out quantitative analysis on six indexes of pH value, organic matters, total nitrogen, alkaline hydrolysis nitrogen, available phosphorus and quick-acting potassium in the samples, determining the content level of the indexes, and forming soil nutrient and nutrient component data;
s5, establishing a database based on soil nutrient and nutrient component data, fertilization data and tobacco leaf economic character data, and fitting a fertilization amount formula through the database; the fertilization data comprises fertilizer varieties, fertilizer nutrient content and fertilization amount; the economic characters of the flue-cured tobacco mainly comprise an upper equal tobacco proportion, a middle tobacco proportion, an average price and a production value; introducing longitude and latitude data of a sample and soil nutrient and nutrient component data into ArcGIS 10.2 software to form a point map layer, then carrying out half variance analysis on each index data, and finally carrying out interpolation in the ArcGIS 10.2 software by adopting a Kriging interpolation method based on half variance parameters and the point map layer data to obtain a soil space distribution map covering the whole area; integrating the fertilization data into Excel, integrating the economic traits of the flue-cured tobacco into Excel, and drawing a spatial distribution map according to the operation steps of spatial distribution of soil data according to the upper tobacco proportion and the middle tobacco proportion.
The fertilization amount and the soil fertility have a meditation function relationship and have extremely obvious linear correlation with the first-class smoke proportion, and the fertilization formula is as follows: z ═ ax + byc(ii) a Wherein z is the fertilizing amount, x is the first-class smoke proportion, and y is the soil fertility level.
Further, three parts of data of fertilization, soil nutrients and first-class smoke proportion are imported into SPSS 25.0, and a basic formula z of a fertilization formula is combined to be ax + bycAnd performing model simulation by using a non-linear regression tool by taking the first-class smoke proportion and the soil fertility as variables and the fertilizing amount as a dependent variable, and obtaining a rationalized fertilization suggestion simple model as follows:
N＝0.020Y+16.348SN -0.731；
P2O5＝0.021Y+5.122SP -0.065；
K2O＝0.060Y+9.799SK 0.190；
wherein Y is the target first-class smoke proportion, SN、SP、SKRespectively correcting values of alkaline hydrolysis nitrogen, available phosphorus and quick-acting potassium;
wherein the formula of the correction coefficient of the nitrogen, phosphorus and potassium soil nutrients is respectively as follows:
in the formula, SN、SP、SKRespectively are corrected values (unit: kg. mu-1) and S 'of alkaline hydrolysis nitrogen, available phosphorus and quick-acting potassium'N、S'P、S'KRespectively the soil measurement values of alkaline hydrolysis nitrogen, available phosphorus and quick-acting potassium (unit: mg. kg-1), 2.29 is the conversion of P to P2O51.2 conversion of K to K2The conversion factor of O is 0.15 as a unit conversion factor.
Compared with the traditional method, the fertilization control method using the method is used for carrying out a comparative experiment, a traditional low-fertilizer area with flat terrain and a high-fertilizer-consumption land plot are selected in a test area, the soil type is yellow soil, no fertilizer test is carried out in two years, and the test variety is Yunyan 87.
In order to reduce uncontrollable factors of experiments, uniform dosage is adopted for fertilizers such as seedling raising fertilizers, additional fertilizers, organic fertilizers, leaf fertilizers and the like with small dosage, 3 groups of repetition are set in each group of experiments, the repetition area is 0.5 mu each time, the transplanting specifications are all 120cm multiplied by 50cm, and the number of tested tobacco plants is 550.
According to the calculation of a digital model, the quantity of the base fertilizer in the low-fertilizer-consumption area is 32.50 Kg/mu, and the quantity of the base fertilizer in the high-fertilizer-consumption area is 38.20 Kg/mu.
TABLE 1 comparison design table of fertilizer effect for different traditional fertilizer consumption areas
1.1 comparison of agronomic traits
After the test is started, the agronomic characters such as stem circumference, pitch, maximum leaf length, effective leaf number, plant height and the like are firstly measured in the field at intervals from the beginning of the transplantation of tobacco plants, and the measurement results are as follows:
TABLE 2 comparison of agronomic traits for different treatments in low-fertilizer areas
As can be seen from Table 2, in the low fertilizer consumption area, before transplanting to the clustered plant, the development condition of the first treatment is delayed compared with the second treatment, but after the clustered plant reaches the mature period, the first treatment has better agricultural indexes than the second treatment, and the development level of the tobacco plant is higher.
From table 3, the overall development difference of different treatments is not large, but the growth and development conditions of the tobacco plants after the tobacco plants enter the vigorous growth middle period are slightly increased compared with the treatment after the agronomic characters such as pitch, maximum blade width, plant height and the like are 6 months and 15 days, which shows that the recommended dosage calculated by using a digital model for the nutrition supply of the tobacco plants in the later development period is more reasonable and balanced, and the developed delayed effect of the tobacco plants is more sufficient.
TABLE 3 comparison of agronomic traits for different treatments in high-utilization fertilizer areas
1.2 economic trait data comparison
TABLE 4 comparison of economic effects of different treatments in areas with low fertilizer consumption
TABLE 5 comparison of economic effects of different treatments in high fertilizer utilization areas
From tables 4 and 5, it can be seen that after the fertilizer application amount calculated according to the digital model is applied to the field, no matter the tobacco areas with high fertilizer application amount or the tobacco areas with low fertilizer application amount are superior to the control group which determines the fertilizer application amount according to the traditional experience in the aspect of economic character performance, particularly in the tobacco areas with low fertilizer application amount, the mu average output value is higher than 111.02 yuan, and even if the 2.50kg base fertilizer cost of excessive application is deducted, the mu average economic benefit is still obviously improved.
1.3 tobacco leaf chemical quality analysis
TABLE 6 comparison of chemical quality of flue-cured tobacco in low fertilizer consumption areas
TABLE 7 chemical quality traits comparison of flue-cured tobacco in high utilization fertilizer area (take C3F as an example)
From the chemical composition analysis of flue-cured tobaccos in two areas with different fertilizer consumption, the total sugar content is higher, the chloride ion content is lower, and the difference with national high-quality tobacco leaves still exists, but from the chemical composition analysis in the two tobacco areas, in the low-fertilizer-consumption tobacco area, the fertilizer consumption calculated according to a digital model is used for fertilizing, the sugar-nitrogen ratio is closer to 10, the potassium-chlorine ratio is larger than a comparison group for fertilizing according to the base fertilizer quantity determined by traditional experience, meanwhile, the important index for measuring the maturity of the tobacco leaves is lower than the traditional comparison group by 69.27 percent, in the high-fertilizer-consumption tobacco area, although the index difference of each chemical composition is larger, a similar change trend still exists on the two treatments, which fully shows that the more proper, scientific and reasonable fertilizer consumption is adopted, the internal quality of the tobacco leaves can be effectively improved under the existing agricultural conditions, and the industrial availability of the local tobacco leaves is further improved, the compatibility in the cigarette production process is enhanced.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (7)
1. A method for controlling the fertilization quantity of flue-cured tobaccos in a mountain tobacco area is characterized by comprising the following steps: the method comprises the following steps:
s1, acquiring the distribution condition of the tobacco field, and collecting a soil sample of a tobacco field soil cultivation area;
s2, collecting the use quantity data of different types of fertilizers in the tobacco field distribution area, and calculating N, P, K use quantity to obtain fertilization data;
s3, acquiring current-year flue-cured tobacco sale economic character data in different areas through the flue-cured tobacco purchasing system data;
s4, sampling and collecting soil samples in the tobacco fields, carrying out quantitative analysis on six indexes of pH value, organic matters, total nitrogen, alkaline hydrolysis nitrogen, available phosphorus and quick-acting potassium in the samples, determining the content level of the indexes, and forming soil nutrient and nutrient component data;
s5, establishing a database based on the soil nutrient and nutrient component data, the fertilization data and the tobacco economic character data, and fitting a fertilization amount formula through the database.
2. The method for controlling the fertilization quantity of the flue-cured tobacco in the mountain tobacco district as claimed in claim 1, wherein: step S1 further includes: a five-point sampling method is adopted to collect soil samples in a tobacco field soil cultivation area, the soil samples serve as a soil oxidation and physicochemical property analysis data source, the samples are numbered, and longitude and latitude information of the samples is recorded.
3. The method for controlling the fertilization quantity of the flue-cured tobacco in the mountain tobacco district as claimed in claim 2, wherein: and step S3, selecting the first-class tobacco proportion as an index for measuring the quality of the flue-cured tobacco, and applying the qualified first-class tobacco proportion as a production target to the model.
4. The method for controlling the fertilization quantity of the flue-cured tobacco in the mountain tobacco district as claimed in claim 3, wherein: in step S5, the fertilization data includes fertilizer variety, fertilizer nutrient content, and fertilization amount; the economic characters of the flue-cured tobacco mainly comprise the upper equal tobacco proportion, the middle tobacco proportion, the average price and the output value.
5. The method for controlling the fertilization quantity of the flue-cured tobacco in the mountain tobacco district as claimed in claim 4, wherein: step S5 further comprises the steps of introducing longitude and latitude data of the sample and soil nutrient and nutrient component data into ArcGIS 10.2 software to form a point layer, then carrying out half variance analysis on each index data, and finally carrying out interpolation in the ArcGIS 10.2 software by adopting a Kriging interpolation method based on the half variance parameters and the point layer data to obtain a soil space distribution map covering the whole area; the fertilization data are integrated into Excel, the economic traits of the flue-cured tobacco are integrated into Excel, and the spatial distribution map is drawn according to the operation steps of spatial distribution of soil data according to the upper tobacco proportion and the middle tobacco proportion.
6. The method for controlling the fertilization quantity of the flue-cured tobacco in the mountain tobacco district as claimed in claim 5, wherein: the fertilization amount and the soil fertility have a meditation function relationship and have extremely obvious linear correlation with the first-class smoke proportion, and the fertilization formula is as follows: z ═ ax + byc(ii) a Wherein z is the fertilizing amount, x is the first-class smoke proportion, and y is the soil fertility level.
7. The method for controlling the fertilization quantity of the flue-cured tobacco in the mountain tobacco district as claimed in claim 6, wherein: importing three parts of data of fertilization, soil nutrients and first-class smoke proportion into SPSS 25.0, and combining a basic formula z of a fertilization formula, wherein the basic formula z is ax + bycAnd performing model simulation by using a non-linear regression tool by taking the first-class smoke proportion and the soil fertility as variables and the fertilizing amount as a dependent variable, and obtaining a rationalized fertilization suggestion simple model as follows:
N＝0.020Y+16.348SN -0.731；
P2O5＝0.021Y+5.122SP -0.065；
K2O＝0.060Y+9.799SK 0.190；
wherein Y is the target first-class smoke proportion, SN、SP、SKRespectively correcting values of alkaline hydrolysis nitrogen, available phosphorus and quick-acting potassium;
wherein the formula of the correction coefficient of the nitrogen, phosphorus and potassium soil nutrients is respectively as follows:
in the formula, SN、SP、SKRespectively are corrected values (unit: kg. mu-1) and S 'of alkaline hydrolysis nitrogen, available phosphorus and quick-acting potassium'N、S'P、S'KRespectively the soil measurement values of alkaline hydrolysis nitrogen, available phosphorus and quick-acting potassium (unit: mg. kg-1), 2.29 is the conversion of P to P2O51.2 conversion of K to K2The conversion factor of O is 0.15 as a unit conversion factor.
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| CN116629494A (en) * | 2023-06-05 | 2023-08-22 | 中国烟草总公司重庆市公司烟叶分公司 | Accurate crop fertilization method and system based on big data platform |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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