Device for measuring content of chlorophyll of leaf and retrieval method

Abstract

The invention relates to a device for measuring content of chlorophyll of leaf and a retrieval method, and belongs to the technical field of tissue optics. The measuring device comprises a reflectivity measuring unit and a processing unit, wherein the processing unit is in communication connection with the reflectivity measuring unit; the processing unit comprises a memory and a processor, and the memory is stored with a computer program. The computer program is executed by the processor with the following step of according to a chlorophyll retrieval model, utilizing the reflectivity measuring unit to obtain the total reflectivity of the leaf, so as to retrieve the content of the chlorophyll of the leaf. The device has the advantages that the total reflectivity of the to-be-measured leaf is obtained by the reflectivity measuring unit, and the processor unit utilizes the measured total reflectivity to retrieve the content of the chlorophyll of the leaf through the chlorophyll retrieval model; in the working process, only the total reflectivity is measured, and the content of the chlorophyll is outputted; compared with the prior art, the measuring process and retrieval process are effectively simplified, and the output accuracy is further improved.

Description

technical field [0001] The invention relates to the technical field of tissue optics, in particular to an inversion method and device for leaf chlorophyll content. Background technique [0002] Chlorophyll is the basic component of leaves, which not only dominates the photosynthesis of leaves, but also serves as an important indicator of the growth status of crops; for example, the chlorophyll content in crops can be used to measure the photosynthetic capacity, growth cycle, and stress of diseases and insect pests and heavy metals of crops The nutritional status of crops can also be estimated indirectly through the chlorophyll content. [0003] At present, the relationship between IPR, CARI, SIPI, TVI and other vegetation indices and chlorophyll content is often used to establish a statistical model for estimating leaf chlorophyll content. The patent document with publication number CN105277491A discloses a method for measuring chlorophyll content, that is, an inversion met...

AI Technical Summary

Problems solved by technology

The model does not lack mechanism because it is based on the PROSPECT model, but it must measure the reflectance and transmittance of the blade in the 400nm-2500nm band as input, so as to output the above six parameters, so that in the inversion process, it must be based on A large amount of reflectance and transmittance data from 400nm to 2500nm is studied, which makes the modeling process cumbersome and not universal. In addition, unnecessary parameters other than chlorophyll content are output

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