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Method for detecting content of chlorophyll b in canopy of jujube tree

A detection method and chlorophyll technology, applied in the field of plant cultivation engineering, can solve problems such as injury and shorten detection time, and achieve the effects of simple operation, shortening detection time, avoiding pollution and harm to human body

Inactive Publication Date: 2016-09-21
TARIM UNIV
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Problems solved by technology

[0003] In order to overcome the defects in the prior art, the present invention proposes a pollution-free, easy to operate, fast and accurate detection method for the content of chlorophyll b in the canopy of jujube trees, which realizes the rapid and accurate detection of the content of chlorophyll b in the canopy of jujube trees, There is no need to prepare any chemical reagents, which avoids the pollution of the environment and the harm to the human body caused by the discharge of chemical tail liquid during the determination process. At the same time, it also greatly simplifies the operation steps and shortens the detection time. The need to obtain the data of chlorophyll b content in the canopy provides a means to quickly obtain the basis for fertilization amount for the precise application of chlorophyll b fertilizer in jujube field management

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  • Method for detecting content of chlorophyll b in canopy of jujube tree

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Embodiment Construction

[0019] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] A detection method of jujube canopy chlorophyll b content, comprising the following steps:

[0021] (1) Determining the hyperspectral information of the jujube canopy to be detected for chlorophyll b content, select clear and cloudless or less cloudy and wind less than level 3 weather, the specific measurement time of this example is August 21, 2015, hyperspectral The information collection time is 13:00-15:00 Beijing time. The hyperspectral information collection instrument is the FieldSpec 4 portable ground object spectrometer produced by ASD Company of the United States. 10 spectral curves are collected for each canopy, and the average value of the 10 curves is the final reflectance value of the canopy. In this example, a total of 54 hyperspectral information of jujube tree canopies were collected...

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Abstract

The invention discloses a method for detecting content of chlorophyll b in canopy of jujube tree. The method comprises the following steps of collecting the high spectrum information of the canopy of jujube tree in sunny, cloudless or less-cloud weather with wind force less than 3; performing multiplicative scatter correction on the high spectrum data, and performing wavelet denoising and smoothing; extracting the spectrum reflectance values of the canopy of jujube tree with to-be-measured content of chlorophyll b in the wavelengths of 470nm, 610nm, 645nm, 652nm, 663nm, 985nm and 1160nm; substituting the spectrum reflectance values into a detection model, and calculating, so as to obtain the content of chlorophyll b in the canopy of jujube tree. The method has the characteristics that the pollution is avoided, the operation is simple, convenient, quick and accurate, and the method is suitable for being popularized and applied.

Description

technical field [0001] The invention belongs to the technical field of plant cultivation engineering, and relates to a method for detecting the content of chlorophyll b, in particular to a method for detecting the content of chlorophyll b in the canopy of jujube trees. Background technique [0002] Chlorophyll b is an essential nutrient element for the growth of jujube trees. Rapid acquisition of chlorophyll b information is a prerequisite for monitoring the growth and quality of jujube trees. The detection method of the total jujube canopy chlorophyll b content in the prior art requires the preparation of chemical reagents, and the discharge of chemical tail liquid during the measurement process will pollute the environment and harm the human body, and has the defects of cumbersome operation steps and long detection time. At present, there is an urgent need for a non-polluting, easy-to-operate, rapid and accurate detection method for the content of chlorophyll b in jujube c...

Claims

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Application Information

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IPC IPC(8): G01N21/25G01N21/55
CPCG01N21/25G01N21/55
Inventor 彭杰牛建龙窦中江陈兵王琼
Owner TARIM UNIV
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