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A rapid non-destructive testing method for harvest maturity of flue-cured tobacco

A non-destructive testing and maturity technology, applied in the measurement of color/spectral characteristics, etc., can solve the problems of reducing the curing quality of tobacco leaves, lack of clear quantitative indicators and testing standards, inconsistent harvesting standards, etc., to achieve easy operation and mastery, oil content. Multi-color uniform effect

Active Publication Date: 2016-05-04
GUIZHOU TOBACCO SCI RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Subjective judgment is likely to cause inconsistency in harvesting standards and reduce the quality of tobacco leaf curing
There are no clear quantitative indicators and testing standards for the maturity level of tobacco leaves in the field

Method used

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  • A rapid non-destructive testing method for harvest maturity of flue-cured tobacco
  • A rapid non-destructive testing method for harvest maturity of flue-cured tobacco
  • A rapid non-destructive testing method for harvest maturity of flue-cured tobacco

Examples

Experimental program
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Effect test

Embodiment 1

[0016] From 2011 to 2012, the flue-cured tobacco mature harvesting and baking experiment was carried out in the Fuquan Flue-cured Tobacco Base of Guizhou Tobacco Research Institute. In order to accurately judge the maturity of tobacco leaves and clarify the maturity standards of tobacco leaves, random selection was made in the tobacco fields with the same transplanting period and cultivation management measures. For 20 tobacco plants, measure the L*a*b* color value of 1 to 3 tobacco leaves in the middle (from bottom to top) with a portable color difference meter. Each leaf should choose to detect 6 points, that is, the tip, middle and leaf base in the center of the leaves on both sides of the main vein, avoiding the main branch veins of the leaves, and then take the average value. L*a*b* values ​​of the first tobacco leaf: 61.25, -5.12, 45.1; L*a*b* values ​​of the second tobacco leaf: 57.99, -6.91, 44.86; L*a of the third tobacco leaf The values ​​of *b* are: 56.76, -7.32, 42...

Embodiment 2

[0018] From 2011 to 2012, the mature harvesting and curing experiment of flue-cured tobacco was carried out in Fuquan Flue-cured Tobacco Base of Guizhou Tobacco Science Research Institute. 20 tobacco plants were randomly selected in a tobacco field with the same transplanting period and cultivation management measures, and the L*C*h* color value of 1 to 3 tobacco leaves in the middle (from bottom to top) was measured with a portable colorimeter. Each leaf should choose to detect 6 points, that is, the tip, middle and leaf base in the center of the leaves on both sides of the main vein, avoiding the main branch veins of the leaves, and then take the average value. L*C*h* values ​​of the first tobacco leaf: 59.6, 46.12, 97.76; L*C*h* values ​​of the second tobacco leaf: 57.99, 45.39, 98.76; L*C*h of the third tobacco leaf The * values ​​are: 56.92, 44.43, 99.8, all within the appropriate range, indicating that 1 to 3 tobacco leaves are mature and can be harvested and roasted at ...

Embodiment 3

[0020] From 2011 to 2012, the mature harvesting and baking experiment of flue-cured tobacco was carried out in Fuquan Flue-cured Tobacco Base of Guizhou Tobacco Research Institute. In the tobacco field with the same transplanting period and cultivation management measures, 20 tobacco plants were randomly selected, and the middle leaves were measured with a portable color difference meter ( From bottom to top) 1 to 3 tobacco leaves L*a*b*C*h*color value. Each leaf should choose to detect 6 points, that is, the tip, middle and leaf base in the center of the leaves on both sides of the main vein, avoiding the main branch veins of the leaves, and then take the average value. The L*a*b*C*h* value of the first tobacco leaf: 61.28, -5.2, 46.39, 46.68, 96.4; the L*a*b*C*h* value of the second tobacco leaf: 59.38, - 5.17, 43.45, 43.76, 96.78; the L*a*b*C*h* value of the third tobacco leaf: 56.84, -6.23, 44.06, 44.5, 98.05, all within the appropriate range, indicating that the tobacco l...

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Abstract

The invention discloses a rapid non-destructive detection method for harvesting maturity of flue-cured tobacco. The method is to randomly select 10-20 tobacco plants from tobacco fields with the same transplanting period and cultivation management measures before the tobacco leaves are normally matured and harvested, and use a portable The color difference meter measures the L*a*b* or / and L*C*h* color values ​​of 1 to 3 tobacco leaves in the middle (from bottom to top). According to the change range of the color value of different maturity tobacco leaves, the harvest maturity of tobacco leaves is quantified. The method of the invention solves the problem that there is no clear index and quantitative index in the mature harvesting process of flue-cured tobacco. The method has clear indicators, has objective judgment indicators, can quantify maturity indicators, and is easy to operate and master. The method is used to judge the maturity of harvested tobacco leaves. After harvesting and roasting, the tobacco leaves have uniform color, good chroma, rich oil content and sufficient aroma. Applicable to tobacco planting and processing enterprises.

Description

technical field [0001] The invention relates to a method for detecting substances by using color changes, in particular to a method for detecting the harvest maturity of flue-cured tobacco leaves. Background technique [0002] The maturity of flue-cured tobacco reflects the development status of tobacco leaves and the degree of degradation and transformation of internal substances, and is the core of tobacco leaf quality competition. Mature harvesting is a necessary condition for obtaining high-quality tobacco leaves. The United States adopts tobacco leaf samples picked one week in advance for chemical composition analysis to judge whether the tobacco leaves are mature; Zimbabwe adopts the quantitative indicators of the color picture color of mature tobacco leaves, barn test and drawer test; Japan uses the method of color comparison card color comparison to judge; Conductivity, sucrose content, proline content of flue-cured tobacco leaves, diagnostic method of tissue struct...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/25
Inventor 武圣江谢已书罗勇潘文杰赵会纳邹焱李国彬张长云韦克苏李德仑姜均
Owner GUIZHOU TOBACCO SCI RES INST
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