CN102183617B - Method for measuring harvest maturity of tobacco leaves - Google Patents
Method for measuring harvest maturity of tobacco leaves Download PDFInfo
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- CN102183617B CN102183617B CN 201110069396 CN201110069396A CN102183617B CN 102183617 B CN102183617 B CN 102183617B CN 201110069396 CN201110069396 CN 201110069396 CN 201110069396 A CN201110069396 A CN 201110069396A CN 102183617 B CN102183617 B CN 102183617B
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Abstract
The invention belongs to the technical field of determining of tobacco field harvest maturity and harvest period, and relates to a method for determining the one-time harvest maturity of 5-6 tobacco leaves at the upper part of a tobacco by measuring the chlorophyll content (SPAD value) of the first, third, fifth or sixth leaves counted from up down of the tobacco. According to the method, 20 tobaccos are randomly selected from tobaccos of each mu planted, the first leaf, a chlorophyll measurement instrument is used for measuring the average of the contents of the first leaf, the third leaf, the fifth leaf or the sixth leaf at the upper of tobacco respectively, the measured average value is used as the maturity index complying with one-time harvest when the average value is 20-30 and the chlorophyll contents of the first leaf, the third leaf, the fifth leaf or the sixth leaf have no obvious difference, harvesting tobacco in fields can be carried out. The measuring method of the invention has definite index, has impersonal judgment index, and is easy to operate and master, and tobaccos harvested by using the method have good tobacco maturity and higher quality.
Description
Technical field
The invention belongs to and measure the technical field of gathering maturity and gather period in the flue-cured tobacco field, be specifically related to count from top to bottom by measuring flue-cured tobacco top 1(), the 3rd, the 5th or the 6th leaf chlorophyll content, determine the disposable method of gathering maturity and gathering period of 5～6 tobacco leaves in top.
Background technology
The flue-cured tobacco degree of ripeness is the central factor of quality of tobacco, and maturity is the basis of flue-cured tobacco degree of ripeness and gather in the field.The field harvest maturity directly influences modulated process and the quality of tobacco of tobacco leaf, has only harvest maturity suitable, and modulation is appropriate, just can obtain the tobacco leaf that degree of ripeness is good, quality is high.Abroad the expert thinks,
Can remedy the defective (No amount of skill in flue-curing can make up for the failure to harvest tobacoo at the proper stage of leaf maturity) of not gathering at the suitable mature period of flue-cured tobacco without any modulation technique.
The gather method of maturity of existing judgement field mainly is the qualitative description of blade face mature characteristic.As tobacco leaf color by green flavescence, the blade yellow green, the blade face falls yellow 7～8 one-tenths, the master pulse milky white is shinny, sub-arteries and veins bleaches more than 1/2, the increase of cauline leaf angle, blade tip leaf margin last volume etc., these determination methods lack objective quantitative target.The grasp of these features often varies with each individual, and different people is to the assurance difference of mature characteristic, and the period of gathering is different, causes easily to gather improperly, reduces quality of tobacco.Particularly test now proves.The top disposable maturation of 5～6 tobacco leaves is adopted roasting, can improve the tobacco leaf degree of ripeness
,Improve quality of tobacco.But when adopt roastingly actually, but do not have clear and definite index and assay method, be difficult to grasp appropriate gathering period, hindered the promotion and application of this technology.
Summary of the invention
The purpose of this invention is to provide a kind of method of measuring the cured tobacco leaf harvest maturity, the index of its assay method is clear and definite, has objective judge index, operates easily and grasps, and the tobacco leaf degree of ripeness of gathering with the method is good, quality is higher.
Solving the scheme that technical matters of the present invention adopts is: select 20 strain cigarettes from the tobacco leaf of every mu of plantation at random, measure the 1st, the 3 5th or the 6th leaf chlorophyll content (SPAD value) mean value of number from top to bottom respectively with the chlorophyll measuring instrument, when the mean value of measuring is 20～30, do not have significant difference, disposablely adopt roasting tobacco leaf and carry out the field and gather as meeting.
In measurement operation of the present invention, every leaf should select to survey 6 points, and namely the leaf tip of master pulse both sides, middle part and leaf base are got the mean value of its mensuration then.
When the chlorophyll measuring of selecting the 1st, the 3rd, the 5th or the 6th blade, the measuring chlorophyll content difference value of each leaf is being baked value for suitable adopting 5 below.
Useful technique effect of the present invention is: this method has solved the flue-cured tobacco field maturity of gathering and has never had clear and definite index and the difficult problem of assay method, the index of this assay method is clear and definite, has objective judge index, operation and grasp easily, the tobacco leaf degree of ripeness of gathering with the method is good, quality is higher.Determine to adopt presentation quality features such as tobacco tissue structure after roasting, identity, oil content, colourity with this method and improve, first-class cigarette increases by 1.39～8.3 percentage points, on average increases 5.33 percentage points; Average price improves 0.22～1.16 yuan/kg, on average improves 0.75 yuan/kg.
Embodiment
Embodiment 1
Carrying out the 6 disposable maturations of tobacco leaf in top in Ci Ke village, Yulong county, Lijiang City, Yunnan Province in 2009 adopts when baking experiment and demonstration, adopt roasting best period for determining the 6 disposable maturations of tobacco leaf in cloud and mist 97 kind tops, every mu of vega () select 20 strain cigarettes at random, with the quick analyzer of chlorophyll, measure the chlorophyll content value (SPAD value) of the 1st, the 3rd, the 6th leaf of upper tobacco leaf (counting from top to bottom) respectively.Every leaf is surveyed 6 points, i.e. the leaf tip of master pulse both sides, and middle part and leaf base are got its mean value then and are the chlorophyll content of this leaf.After having surveyed selected each leaf of 20 strains, calculate each leaf mean value.The result is: the 1st leaf 27.82, the 3 leaves 23.88, the 6 leaves 22.92; Carry out statistical study, the chlorophyll content value of the 1st, the 3rd, the 6th leaf does not have significant difference.This moment disposable 6 tobacco leaves in roasting top of adopting, the result is not than adopting this method to determine to adopt roasting period, first-class cigarette increases by 6.3 percentage points, 1.16 yuan/kg of average price raising, the fragrance of tobacco leaf and jealous improving.
Embodiment 2
Ground with the test base in Yunnan Academy of Tobacco Agricultural Science in 2010 and carry out the harvest maturity test of the suitable field of upper tobacco leaf, every mu of vega () select 20 strain cigarettes at random, with the quick analyzer of chlorophyll, measure the chlorophyll content value (SPAD value) of the 1st, the 3rd, the 6th leaf of upper tobacco leaf (counting from top to bottom) respectively.Every leaf is surveyed 6 points, i.e. the leaf tip of master pulse both sides, and middle part and leaf base are got its mean value then and are the chlorophyll content of this leaf.After having surveyed selected each leaf of 20 strains, calculate each leaf mean value and be: the 1st leaf 26.49, the 3 leaves 26.10, the 6 leaves 24.90; The chlorophyll content difference value of each leaf is below 5, and statistic analysis result is that the chlorophyll content of the 1st, the 3rd, the 6th leaf does not have significant difference.This moment disposable 6 tobacco leaves in top of gathering, the first-class tobacco leaf in roasting back is than not reaching 8.3 percentage points of the increases that These parameters gathers, 0.86 yuan/kg of average price raising.
Embodiment 3
2010 in Hai Hu village, Jiangchuan County, Yunnan Province, gather during period in that 5～6 tobacco leaves in top of determining the NC71 kind are disposable, every mu of vega () select 20 strain cigarettes at random, with the quick analyzer of chlorophyll, the 1(that measures upper tobacco leaf respectively counts from top to bottom), the chlorophyll content value (SPAD value) of the 3rd, the 5th leaf.Every leaf is surveyed 6 points, i.e. the leaf tip of master pulse both sides, and middle part and leaf base are got its mean value then and are the chlorophyll content of this leaf.After having surveyed selected each leaf of 20 strains, calculate each leaf mean value and be: the 1st leaf 29.47, the 3 leaves 27.59, the 5 leaves 25.23; The chlorophyll content difference value of each leaf is below 5, and statistic analysis result is that the chlorophyll content of the 1st, the 3rd, the 5th leaf does not have significant difference.This moment disposable 5～6 tobacco leaves in top of gathering, cured tobacco leaf is than determining to adopt roasting period without this method, first-class cigarette ratio increases by 1.39 percentage points, average price improves 0.22 yuan/kg.
Claims (3)
1. method of measuring the cured tobacco leaf harvest maturity, it is characterized in that: from the tobacco leaf of every mu of plantation, select 20 strain cigarettes at random, measure the 1st, the 3 5th or the 6th leaf chlorophyll content mean value of number from top to bottom respectively with the chlorophyll measuring instrument, when the mean value of measuring is 20～30, disposablely adopts roasting tobacco leaf and carry out the field and gather as meeting.
2. the method for mensuration cured tobacco leaf harvest maturity according to claim 1 is characterized in that: every leaf is selected to survey 6 somes during mensuration, and namely the leaf tip of master pulse both sides, middle part and leaf base are got its mean value then.
3. the method for mensuration cured tobacco leaf harvest maturity according to claim 2 is characterized in that: to the chlorophyll measuring of the 1st, the 3rd, the 5th or the 6th blade, the chlorophyll content difference value of each leaf is being adopted roasting value for suitable below 5.
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| CN 201110069396 CN102183617B (en) | 2011-03-22 | 2011-03-22 | Method for measuring harvest maturity of tobacco leaves |
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| CN 201110069396 CN102183617B (en) | 2011-03-22 | 2011-03-22 | Method for measuring harvest maturity of tobacco leaves |
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| CN102183617B true CN102183617B (en) | 2013-08-21 |
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Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245620A (en) * | 2013-05-24 | 2013-08-14 | 贵州省烟草科学研究院 | Method for detecting yellowing degree of flue-cured tobacco leaves during curing process |
| CN103278458B (en) * | 2013-05-24 | 2016-05-04 | 贵州省烟草科学研究院 | A kind of fast non-destructive detection method of flue-cured tobacco harvest maturity |
| CN103245619A (en) * | 2013-05-24 | 2013-08-14 | 贵州省烟草科学研究院 | Nondestructive testing method for maturity level of organic flue-cured tobacco leaves at late growth stage |
| CN103245625A (en) * | 2013-05-24 | 2013-08-14 | 贵州省烟草科学研究院 | Method for nondestructive detection on maturity of fresh flue-cured tobacco leaves |
| CN103823050A (en) * | 2014-02-28 | 2014-05-28 | 福建中烟工业有限责任公司 | Method for determining maturation of tobacco leaves and method for harvesting tobacco leaves |
| CN104568771A (en) * | 2014-12-21 | 2015-04-29 | 云南省烟草公司昆明市公司 | Economical, portable and efficient grading method for maturity of fresh tobacco leaves of flue-cured tobaccos |
| CN105675540A (en) * | 2016-01-15 | 2016-06-15 | 中国农业科学院茶叶研究所 | Rapid nondestructive determination method of aluminum content of fresh tea leaves |
| CN106840941B (en) * | 2017-03-16 | 2019-10-08 | 中国林业科学研究院林业研究所 | A kind of method of quick judgement hybridization paper mulberry harvest time |
| CN106932361A (en) * | 2017-03-21 | 2017-07-07 | 江苏省农业科学院 | The method for building up of Peach fruits maturity forecast model |
| CN107211650A (en) * | 2017-06-06 | 2017-09-29 | 广东中烟工业有限责任公司 | A kind of tobacco leaf picking method and its application |
| CN108120802B (en) * | 2017-12-19 | 2020-12-08 | 广西中烟工业有限责任公司 | Quantitative prediction method for flue-cured tobacco maturity field investigation for determining appropriate harvesting period of tobacco leaves |
| CN112213451B (en) * | 2020-10-21 | 2021-07-06 | 华南农业大学 | Nondestructive testing method for maturity of pseudobulb of dendrobium nobile and application thereof |
| CN113919690B (en) * | 2021-10-09 | 2023-08-29 | 四川农业大学 | Tobacco leaf field maturity state evaluation method and application |
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