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Correction method of spectrograph for detecting nutrient content of plant

A nutrient content and calibration method technology is applied in the calibration field of Top Instruments TYS-3N plant nutrient content detection spectrometer, and achieves the effects of good economic benefits, easy mass production, and improved detection accuracy and reliability.

Inactive Publication Date: 2010-07-14
ZHEJIANG UNIV
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Problems solved by technology

However, the current domestically produced instruments still face an important quality problem, that is, the measurement accuracy of the instrument

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] When the intensity of the light source is weak, the detection value of the Top Instrument TYS-3N plant nutrient content detection spectrometer is corrected.

[0027] After starting up, it will automatically enter the system prompt calibration interface. After pressing the corresponding key to confirm, the detection head of the TYS-3N plant nutrient content detection spectrometer will not clamp any detection samples, and the system will perform full-scale calibration to obtain the full-scale calibration coefficient. After that, the system will automatically prompt the user to place the standard calibration sample on the detection site of the plant nutrient content detection spectrometer, continue to perform sample calibration, and obtain the actual reading calibration coefficient of the instrument. After the sample calibration is completed, the plant nutrient content detection spectrometer can start to work normally.

[0028] Different experimental samples are tested for...

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Abstract

The invention discloses a correction method of a spectrograph for detecting the nutrient content of a plant, which comprises the following steps of: performing full scale correction to the spectrograph for detecting the nutrient content of the plant without a detecting sample to obtain a full scale correction coefficient; performing sample correction through a standard detecting sample with an evenly-distributed SPAD value and a fixed value to obtain the practical numerical reading correction coefficient of the spectrograph according to the full scale correction coefficient; and performing practical correction to the practical detecting value of the spectrograph for detecting the nutrient content of the plant with the full scale correction coefficient and the spectrograph practical numerical reading correction coefficient. The correction method can overcome the influence of the elements such as the light intensity of light source, the parameter of measuring environment, the dynamical property of a photoelectric sensor, and the electric quantity of power-supplying cell, and the like to the detecting reliability and the precision of the spectrograph for detecting the nutrient content of the plant, greatly improves the detecting precision and reliability of the spectrograph, and improves the adaptive capacity to environment of the spectrograph, compared with the existing domestic spectrograph.

Description

technical field [0001] The invention relates to a correction method of a plant nutrient content detection spectrometer (Top Instrument TYS-3N), in particular to a correction method of the Top Instrument TYS-3N plant nutrient content detection spectrometer. Background technique [0002] my country is a large agricultural country. The implementation of precision agriculture can not only save a lot of resources in our country, but also reduce environmental pollution caused by excessive use of pesticides and fertilizers, which is of great significance. The implementation basis of precision agriculture is to accurately judge and detect the nutrient content of farmland crops. Therefore, we have developed a plant nutrient content detection spectrometer (Top Instruments TYS-3N) based on spectral technology, which is used for the detection of chlorophyll content, nitrogen content and water content of plant leaves. Compared with the similar plant nutrient content detection instrument...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/25G01N21/27
Inventor 何勇聂鹏程李晓丽杨燕吴迪
Owner ZHEJIANG UNIV
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