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Nondestructive testing method for maturity level of organic flue-cured tobacco leaves at late growth stage

A technology for mature tobacco leaves and later stages of growth, applied in the measurement of color/spectral characteristics, etc., can solve problems such as visual errors, heavy workload, and drawing a large number of images, and achieve the effects of reducing losses, improving comprehensive quality, and clear indicators

Inactive Publication Date: 2013-08-14
GUIZHOU TOBACCO SCI RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is not difficult to see that this method needs to draw a large number of images, the workload is heavy, and there are still visual errors

Method used

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  • Nondestructive testing method for maturity level of organic flue-cured tobacco leaves at late growth stage
  • Nondestructive testing method for maturity level of organic flue-cured tobacco leaves at late growth stage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] In 2012, an organic flue-cured tobacco curing test was carried out in the curing room base of Fuquan Tobacco Science Research Institute in Guizhou Province. In order to accurately determine the maturity degree of organic tobacco leaves and clarify the maturity standards of tobacco leaves, 20 tobacco fields were randomly selected in the tobacco fields with the same transplanting period and cultivation management measures. Tobacco strains, the average chlorophyll content (SPAD value) of 1 to 6 leaves from bottom to top was measured with a chlorophyll meter. Each leaf should choose to measure 6 points, that is, the tip, middle and leaf base on both sides of the main vein, 1 to 2 cm away from the edge of the leaf, avoiding the main branch of the leaf, and then take the average value of the measurements. The data measured for the first time are: 27.5 for the first leaf, 29.6 for the second leaf, and 31.9 for the third leaf. Tobacco leaves are underripe, so 4~6 leaves are not...

Embodiment 2

[0016] In 2012, an organic flue-cured tobacco curing test was carried out at the curing room base of Fuquan Tobacco Science Research Institute, Guizhou Province. In the organic tobacco leaves harvested at conventional maturity, in order to accurately determine the maturity of organic tobacco leaves, the average value of chlorophyll content (SPAD value) of the leaves was measured with a chlorophyll meter. Each leaf should choose to measure 6 points, that is, the tip, middle and leaf base on both sides of the main vein, 1 to 2 cm away from the edge of the leaf, avoiding the main branch of the leaf, and then take the average value of the measurements. According to the classification standard of organic tobacco leaf maturity: when the measured average value of organic tobacco leaf SPAD is greater than 32, the tobacco leaf is defined as underripe or immature; when the measured organic tobacco leaf SPAD average value is 27-32, the tobacco leaf is defined as still mature; when the me...

Embodiment 3

[0018] In 2012, an organic tobacco leaf curing test was carried out in the curing room base of Guizhou Tobacco Research Institute. The conventional organic tobacco leaf ripening and curing method was used as a control, and the curing test was carried out in separate boxes. According to the maturity standard divided by the chlorophyll meter, it is packed and baked according to the maturity, and repeated more than 3 times. 19.49% of the organic tobacco leaves harvested by the conventional method are high-quality tobaccos, and 25.12% of the organic tobacco leaves harvested and baked by this method are high-quality tobaccos. The results showed that compared with conventional organic tobacco mature harvest, the tobacco leaves classified and cured according to the chlorophyll meter maturity classification standard increased by 5.63%, the appearance quality of tobacco leaves was improved, and the overall quality was significantly improved.

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Abstract

The invention discloses a nondestructive testing method for the maturity level of organic flue-cured tobacco leaves at the late growth stage, which comprises the following steps: before organic tobacco leaves are mature and harvested, randomly selecting 20 strains of tobaccos from tobacco fields in which the transplanting periods and cultivation and management measures are consistent; respectively determining the SPAD average value of 1-6 leaves by using a chlorophyll meter, wherein the larger the SPAD average value is, the poor the maturity level is; when the average value is greater than 32, determining that the tobacco leaves are under-mature or immature; when the average value is 27-32, determining that the tobacco leaves are passably mature; when the average value is 20-27, determining that the tobacco leaves are mature or rightly mature; when the average value is 14-20, determining that the tobacco leaves are completely mature; and when the average value is less than 14, determining that the tobacco leaves are over-mature. The method disclosed by the invention is clear in indexes, has objective judgment indexes, and can quantify the maturity level, and therefore, the loss caused by visual errors is reduced, and the method is easy to operate and master. When the flue-cured tobacco planting is guided by using the method, the tobacco leaves are uniform in color and good in color scale, and the integrated quality of the tobacco leaves is improved. The method is applicable to the tobacco planting.

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 maturity degree of tobacco leaves in the late growth stage of organic flue-cured tobacco. Background technique [0002] At the end of the 20th century, the global anti-smoking movement was on the rise, and the international cigarette market showed a trend of developing towards low-tar, low-nicotine and low-harm cigarettes. In this context, in the early 1990s, foreign countries proposed the concept of organic tobacco leaves. In 2001, the Department of Science and Education of the State Tobacco Monopoly Administration proposed to carry out research and development of "pollution-free" tobacco leaves. In 2008, Yunnan and Guizhou began to try to grow organic tobacco leaves. In 2009, some organic tobacco planting areas in Yunnan and Guizhou obtained organic certification. In 2010, Yunnan released the local standard of "Organic Toba...

Claims

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Application Information

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Patent Type & Authority Applications(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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