Method for measuring harvest maturity of tobacco leaves

A technology of maturity and tobacco leaves, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of lack of indicators and measurement methods, obstacles to technology promotion and application, and difficulty in grasping the harvesting period, so as to improve the appearance quality characteristics and objectively The effect of judging indicators, easy operation and mastery

Active Publication Date: 2011-09-14
YUNNAN ACAD OF TOBACCO AGRI SCI
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

However, there is no clear indicator and measurement method for when to pick and roast. It is diffic...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] In 2009, in Cike Village, Yulong County, Lijiang City, Yunnan Province, when the experimental demonstration of one-time mature harvesting and roasting of the upper six tobacco leaves was carried out, in order to determine the best time for one-time mature harvesting and roasting of the upper six tobacco leaves of Yunyan 97 variety, the tobacco field per mu ( Ground) Randomly select 20 tobacco plants, and measure the chlorophyll content (SPAD value) of the first, third and sixth leaves of the upper tobacco leaves (counting from top to bottom) with a rapid chlorophyll measuring instrument. Measure 6 points on each leaf, that is, the leaf tip, middle and leaf base on both sides of the main vein, and then take the average value as the chlorophyll content of the leaf. After measuring each leaf of the selected 20 plants, calculate the average value of each leaf. The results were: 27.82 for the 1st leaf, 23.88 for the 3rd leaf, and 22.92 for the 6th leaf; statistical analysis ...

Embodiment 2

[0012] In 2010, at the research and test base of the Yunnan Academy of Tobacco Agricultural Sciences, a field-harvested maturity test was carried out on the upper tobacco leaves. 20 tobacco plants were randomly selected per mu of tobacco field (land), and the upper tobacco leaves (from The chlorophyll content value (SPAD value) of the first, third and sixth leaves (numbered from top to bottom). Measure 6 points on each leaf, that is, the leaf tip, middle and leaf base on both sides of the main vein, and then take the average value as the chlorophyll content of the leaf. After measuring each leaf of the selected 20 strains, the average value of each leaf is calculated as: the first leaf 26.49, the third leaf 26.10, and the sixth leaf 24.90; the difference in chlorophyll content of each leaf is below 5, and the statistical analysis result is 1. There was no significant difference in the chlorophyll content of the third and sixth leaves. At this time, the upper 6 pieces of tobac...

Embodiment 3

[0014] In Haihu Village, Jiangchuan County, Yunnan Province in 2010, when determining the one-time harvesting period of the upper 5-6 tobacco leaves of the NC71 variety, 20 tobacco plants were randomly selected per mu of tobacco field (land), and the chlorophyll rapid tester was used to measure the The chlorophyll content value (SPAD value) of the first (from top to bottom), third and fifth leaves of the upper tobacco leaf. Measure 6 points on each leaf, that is, the leaf tip, middle and leaf base on both sides of the main vein, and then take the average value as the chlorophyll content of the leaf. After measuring each leaf of the selected 20 strains, the average value of each leaf is calculated as: the first leaf 29.47, the third leaf 27.59, and the fifth leaf 25.23; the difference in chlorophyll content of each leaf is below 5, and the statistical analysis result is the first 1. There was no significant difference in the chlorophyll content of the third and fifth leaves. A...

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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 [0001] The invention belongs to the technical field of measuring the maturity degree and harvesting period of flue-cured tobacco harvested in the field, and specifically relates to determining the chlorophyll content of the first (from top to bottom), third, fifth or sixth leaf chlorophyll in the upper part of flue-cured tobacco to determine the top 5 to 6 leaves. The method of harvesting maturity and harvesting time of 6 tobacco leaves at one time. Background technique [0002] The maturity of flue-cured tobacco is the core factor of tobacco leaf quality, and the maturity of field harvesting is the basis of flue-cured tobacco maturity. Harvesting maturity in the field directly affects the curing process of tobacco leaves and the quality of tobacco leaves. Only when harvesting maturity is appropriate and modulation is appropriate, can tobacco leaves with good maturity and high quality be obtained. Foreign experts believe that there is no modulation technolog...

Claims

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Application Information

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IPC IPC(8): G01N33/00
Inventor 张树堂杨宇虹晋艳
Owner YUNNAN ACAD OF TOBACCO AGRI SCI
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