CN103558342A - Method for measuring and calculating nitrogen, phosphorus and potassium nutrient absorbed amount of flue-cured tobacco - Google Patents
Method for measuring and calculating nitrogen, phosphorus and potassium nutrient absorbed amount of flue-cured tobacco Download PDFInfo
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- CN103558342A CN103558342A CN201310511254.5A CN201310511254A CN103558342A CN 103558342 A CN103558342 A CN 103558342A CN 201310511254 A CN201310511254 A CN 201310511254A CN 103558342 A CN103558342 A CN 103558342A
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Abstract
The invention discloses a method for measuring and calculating the nitrogen, phosphorus and potassium nutrient absorbed amount of flue-cured tobacco, especially the absorptive amount of a certain nutrient of a tobacco plant, and further, the soil fertilizer supply capability and fertilizer utilization ratio of plantation of tobacco leaves are obtained. When the tobacco leaves at the middle part of the tobacco plant are mature, the percentage of nitrogen, phosphorus and potassium in the tobacco leaves is measured, then the absorptive amount of a certain nutrient of the tobacco plant can be obtained through equation operation based on the measured content of nitrogen, phosphorus and potassium, and further, the soil fertilizer supply capability and the fertilizer utilization ratio of the plantation of the tobacco leaves are obtained. According to the invention, the multi-point test and analysis for multiple years show that the nutrient absorbed amount (g/plant) can be measured and calculated through relevant equations as long as the nitrogen, phosphorus and potassium content in the middle leaves (in the 9th-10th leaf positions) of the flue-cured tobacco is measured, and the practical production application proves that the method is convenient, rapid, accurate and practical.
Description
Technical field
The present invention relates to a kind of method of calculating flue-cured tobacco npk nutrient uptake, the particularly uptake of a certain nutrient of cigarette strain, and then obtain soil supplying nutrient capability and the utilization rate of fertilizer of this tobacco leaf of plantation, belong to Tobacco, fertilizer test technical field.
Background technology
In Tobacco, fertilizer test and production practices, usually need to understand the fertility indexs such as soil supplying nutrient capability, utilization rate of fertilizer, so that applying fertilizer economically.For this reason, need to gather respectively cigarette strain root, stem, leaf, flower, wooden fork etc. and carry out dry weight and nutrient content mensuration, in the hope of the Nutrient Absorption amount of smoke strain, and then try to achieve soil supplying nutrient capability and utilization rate of fertilizer.In this process, need to spend a large amount of human and material resources and testing expense, bring very large difficulty to the fertilization compositions based on earth measurement work of tobacco.
Summary of the invention
It is not enough that object of the present invention overcomes above-mentioned prior art, and a kind of method of calculating flue-cured tobacco npk nutrient uptake is provided.The method is not only accurate, and comparatively convenient.
The technical scheme that the present invention calculates the method for flue-cured tobacco npk nutrient uptake is: when the tobacco leaf at cigarette strain middle part reaches maturation, mensuration to nitrogen, phosphorus, potassium content number percent in tobacco leaf, then according to the content determining, by equation computing, can obtain the uptake of a certain nutrient of cigarette strain, and then obtain soil supplying nutrient capability and the utilization rate of fertilizer of this tobacco leaf of plantation.
The method of measuring and calculating flue-cured tobacco npk nutrient uptake includes following steps:
1) determine measuring and calculating object, determine the tobacco leaf position that measuring and calculating is used;
2) determine the growth period of measuring and calculating use tobacco leaf;
3) determine measuring method;
4) determine the dependent equation of measuring and calculating Nutrient Absorption amount, the unit of Nutrient Absorption amount is gram/strain.
The tobacco leaf position that described step 1) measuring and calculating is used is the middle leaf being positioned on strain cigarette, i.e. the 9-10 leaf position.
Described step 2) growth period of calculating tobacco leaf used be tobacco leaf in the maturation reaching in leaf tobacco production meaning, when established technology is ripe, measure.
Described step 3) measuring method is by measuring nitrogen, phosphorus, the potassium content number percent of flue-cured tobacco middle part respective vanes, then applies dependent equation and calculate Nutrient Absorption amount;
Described step 4) determines that the dependent equation of measuring and calculating Nutrient Absorption amount is as follows:
A. the measuring and calculating equation of cigarette strain Nitrogen Absorption amount:
Y=?4.288X-2.175
In formula: Y is cigarette strain Nitrogen Absorption amount, the nitrogen content that X is middle leaf,
B. the measuring and calculating equation of cigarette strain phosphorus element uptake:
Y=3.956X+0.128
In formula: Y is cigarette strain phosphorus element uptake, the phosphorus content that X is middle leaf,
C. the measuring and calculating equation of cigarette strain potassium element uptake:
Y=1.266X+6.414
In formula: Y is cigarette strain potassium element uptake, the potassium content that X is middle leaf.
The present invention is tested and is shown with analysis by multiple years, as long as measure nitrogen, phosphorus, the potassium content (%) of flue-cured tobacco middle leaf (the 9-10 leaf position), just can calculate Nutrient Absorption amount (gram/strain) by dependent equation.
Inventor confirms through production practical application for many years, needs only the N of middle leaf, P, the listed equation of K content substitution this method cigarette strain N, P, the K nutrient content that just can calculate out.
Its dependent equation is as follows:
1, cigarette strain Nitrogen Absorption amount (Y) and middle leaf nitrogen content (X): Y=4.288X-2.175 (r=0.878
*);
2, cigarette strain phosphorus element uptake (Y) and middle leaf phosphorus content (X): Y=3.956X+0.128 (r=0.726
*);
3, cigarette strain potassium element uptake (Y) and middle leaf potassium content (X): Y=1.266X+6.414 (r=0.851
*), (noting: * * is that related coefficient reaches the utmost point level of signifiance).
The inventive method is through production practices application attestation: not only accurate, and comparatively convenient, in actual use, produced good Social benefit and economic benefit.
Accompanying drawing explanation
Embodiments of the invention are described in detail by reference to the accompanying drawings, to becoming detailed in the description of embodiment and easily understand the present invention above-mentioned or additional aspect and advantage below.
Fig. 1 is process chart of the present invention.
Embodiment
Described embodiment, only for explaining the present invention, and can not be interpreted as limitation of the present invention.
When the tobacco leaf at cigarette strain middle part reaches technical maturity, it is carried out to the mensuration of nitrogen, phosphorus, potassium content number percent, then according to the content determining, and related coefficient, by equation computing, can obtain the uptake of a certain nutrient of cigarette strain, and then just can try to achieve soil supplying nutrient capability and utilization rate of fertilizer.Contain following steps:
1) determine measuring and calculating object, determine the tobacco leaf position that measuring and calculating is used;
2) determine the growth period of measuring and calculating use tobacco leaf;
3) determine measuring method;
4) determine the dependent equation of measuring and calculating Nutrient Absorption amount, the unit of Nutrient Absorption amount is gram/strain.
The tobacco leaf position that described step 1) measuring and calculating is used is that the middle leaf being positioned on strain cigarette is the 9-10 leaf position;
Described step 2) growth period of calculating tobacco leaf used is that the ripe established technology of tobacco leaf on reaching leaf tobacco production meaning measured when ripe;
Described step 3) measuring method is by measuring nitrogen, phosphorus, the potassium content number percent of flue-cured tobacco middle part respective vanes, then applies dependent equation and calculate Nutrient Absorption amount;
Described step 4) determines that the dependent equation of measuring and calculating Nutrient Absorption amount is as follows:
A. the measuring and calculating equation of cigarette strain Nitrogen Absorption amount:
Y=?4.288X-2.175(r=0.878
*?*)
In formula: Y is cigarette strain Nitrogen Absorption amount, the nitrogen content that X is middle leaf, r is related coefficient, * * is that related coefficient reaches the utmost point level of signifiance,
B. the measuring and calculating equation of cigarette strain phosphorus element uptake:
Y=3.956X+0.128(r=0.726
*?*)
In formula: Y is cigarette strain phosphorus element uptake, the phosphorus content that X is middle leaf, r is related coefficient, * * is that related coefficient reaches the utmost point level of signifiance,
C. the measuring and calculating equation of cigarette strain potassium element uptake:
Y=1.266X+6.414(r=0.851
*?*)
In formula: Y is cigarette strain potassium element uptake, the potassium content that X is middle leaf, r is related coefficient, * * is that related coefficient reaches the utmost point level of signifiance.
Correlation coefficient r in above-mentioned three equations only represents correlativity, and digital r only represents a kind of degree, irrelevant with measuring technique of the present invention.
The measuring and calculating equation of the measuring and calculating equation of the measuring and calculating equation of above-mentioned a. cigarette strain Nitrogen Absorption amount, b. cigarette strain phosphorus element uptake, c. cigarette strain potassium element uptake also comprises following 9 constants:
1) a item is used for calculating three constants of cigarette strain Nitrogen Absorption amount equation: 4.288,2.175,0.878;
2) b item is used for calculating three constants of cigarette strain phosphorus element uptake equation: 3.956,0.128,0.726;
3) c item is used for calculating three constants of cigarette strain potassium element uptake equation: 1.266,6.414,0.851.
Three constants in above-mentioned three equations are that inventor is summed up and received by production test figure for many years.Adopt above-mentioned three formula to calculate respectively N, P, K, not only accurate, and comparatively convenient.
, materials and methods (by weight percentage)
The large gold dollar of safflower (be called for short red large), G28 and K326 kind are main processing, rate of fertilizer application (0,5,8,11gN/ strain, N:P
2o
5: KO
2=1:2:3) be vice processing, totally 9 treatment combinations.Each treatment combination is got 5 strain cigarettes at random, by growth course and tobacco leaf maturation gather respectively root (whole strain tobacco leaf all gather after), stem (whole strain tobacco leaf all gather after), leaf (when corresponding position tobacco leaf is ripe), (charging in table 1) completes, dries, weighs for top (normally binding), wooden fork (summation of all normally pruning).Wherein, blade is divided into leaf position, three of upper, middle and lower and measures, and uses the average weight at three positions during calculating.Measure different cigarette strain positions and various position leaves N, P, K content (%), then according to its content and dry weight, calculate N, P, the K uptake of the every strain cigarette of each treatment combination.
, interpretation of result
By correlation analysis (table 1-6), correlativity all reaches marked positive correlation with uptake (g/ strain) for N, the P of flue-cured tobacco middle leaf position, K content (%), and bottom leaf K content and uptake correlativity are poor, and upper leaf N content and uptake only reach marked positive correlation.So, with N, P, the K content of middle leaf, calculate cigarette strain nutrient content compared with accurate and convenient.
Table 1 cigarette strain biomass component (gram/strain)
table 2 cigarette strain different parts and various position leaves N cellulose content (%)
table 3 cigarette strain different parts and various position leaves P cellulose content (%)
table 4 cigarette strain different parts and various position leaves K cellulose content (%)
element absorption amount computing formula:
Element absorption amount=(the biological weight * root constituent content of root %)+(the biological weight * cane constituent content of stem %)+(the biological weight * flower wooden fork of flower wooden fork constituent content %)+(average constituent content % of the biological weight * blade of blade).
Data in table 1～table 4 are pressed to corresponding element, and the above-listed computing formula of substitution, can draw N, P, the K element absorption amount of the cigarette strain of table 5.
table 5 cigarette strain N, P, K uptake (gram/strain)
In the data that draw with table 5 again and 1～4 table, the data that record are carried out correlation analysis, can obtain listed related coefficient and the correlate equation respectively organized in table 6.Through practical application, confirm, as long as the N of middle leaf, P, the listed equation of K content substitution this method, cigarette strain N, P, the K nutrient content that just can calculate out.
the relation of table 6 various position leaves nutrient content (X) and uptake (Y)
note: correlation coefficient r
※
for marked positive correlation, r
※ ※
for utmost point marked positive correlation.
Correlation coefficient r in above-mentioned table 6 only represents correlativity, and digital r only represents a kind of degree, and we are for evaluating the index of degree, with the irrelevant direct cause-effect relationship of measuring technique scheme of the present invention.
In the present invention explanation, record rate of fertilizer application: gN/ strain refers to that the N element that is administered to field should use by every strain g.For example, for rate of fertilizer application is 11gN/ strain, wherein N does not refer to that the N element that the strain of every strain cigarette absorbs is 11g, and refers to that the N element that is administered to field should use by every strain 11g.
Claims (6)
1. a method of calculating flue-cured tobacco npk nutrient uptake, it is characterized in that: when the tobacco leaf at cigarette strain middle part reaches maturation, mensuration to nitrogen, phosphorus, potassium content number percent in tobacco leaf, then according to the content determining, by equation computing, can obtain the uptake of a certain nutrient of cigarette strain, and then obtain soil supplying nutrient capability and the utilization rate of fertilizer of this tobacco leaf of plantation.
2. according to wooden fork profit, require the method for the measuring and calculating flue-cured tobacco npk nutrient uptake described in 1, it is characterized in that calculating flue-cured tobacco npk nutrient uptake and include following steps:
1) determine measuring and calculating object, determine the tobacco leaf position that measuring and calculating is used;
2) determine the growth period of measuring and calculating use tobacco leaf;
3) determine measuring method;
4) determine the dependent equation of measuring and calculating Nutrient Absorption amount, the unit of Nutrient Absorption amount is gram/strain.
3. according to wooden fork profit, require the method for the measuring and calculating flue-cured tobacco npk nutrient uptake described in 2, it is characterized in that: the tobacco leaf position that described step 1) measuring and calculating is used is the middle leaf being positioned on strain cigarette, i.e. the 9-10 leaf position.
4. according to wooden fork profit, require the method for the measuring and calculating flue-cured tobacco npk nutrient uptake described in 2, it is characterized in that: the growth period of described step 2) calculating tobacco leaf used be tobacco leaf in the maturation reaching in leaf tobacco production meaning, when established technology is ripe, measure.
5. according to wooden fork profit, require the method for the measuring and calculating flue-cured tobacco npk nutrient uptake described in 2, it is characterized in that: described step 3) measuring method is by measuring nitrogen, phosphorus, the potassium content number percent of flue-cured tobacco middle part respective vanes, then applies dependent equation and calculate Nutrient Absorption amount.
6. according to wooden fork profit, require the method for the measuring and calculating flue-cured tobacco npk nutrient uptake described in 2, it is characterized in that: described step 4) determines that the dependent equation of measuring and calculating Nutrient Absorption amount is as follows:
A. the measuring and calculating equation of cigarette strain Nitrogen Absorption amount:
Y=?4.288X-2.175
In formula: Y is cigarette strain Nitrogen Absorption amount, the nitrogen content that X is middle leaf,
B. the measuring and calculating equation of cigarette strain phosphorus element uptake:
Y=3.956X+0.128
In formula: Y is cigarette strain phosphorus element uptake, the phosphorus content that X is middle leaf,
C. the measuring and calculating equation of cigarette strain potassium element uptake:
Y=1.266X+6.414
In formula: Y is cigarette strain potassium element uptake, the potassium content that X is middle leaf.
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Cited By (2)
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| CN106171453A (en) * | 2016-07-25 | 2016-12-07 | 郑婵颖 | The crops absorption method for determination of amount to chitosan |
| CN110367020A (en) * | 2019-08-07 | 2019-10-25 | 广东省林业科学研究院 | A kind of nutrient application methods in red cone seedling stage |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130226347A1 (en) * | 2012-02-27 | 2013-08-29 | Labs & Technological Holding Solea, S.L. | Monitoring and control of soil conditions |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130226347A1 (en) * | 2012-02-27 | 2013-08-29 | Labs & Technological Holding Solea, S.L. | Monitoring and control of soil conditions |
Non-Patent Citations (4)
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| DARIUSZ TOMKIEWICZ • TOMASZ PISKIER: "A plant based sensing method for nutrition stress monitoring", 《PRECISION AGRIC》 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106171453A (en) * | 2016-07-25 | 2016-12-07 | 郑婵颖 | The crops absorption method for determination of amount to chitosan |
| CN110367020A (en) * | 2019-08-07 | 2019-10-25 | 广东省林业科学研究院 | A kind of nutrient application methods in red cone seedling stage |
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