Soil nutrient ion content detection method based on non-contact conductivity signal

Abstract

The invention relates to a soil nutrient ion content detection method based on a non-contact conductivity signal, which comprises the following steps of: acquiring a non-contact conductivity signal spectrogram of each soil sample, and carrying out peak spectrum identification on each spectrogram, carrying out peak filtering on the non-contact conductivity signal peak spectrum of each soil sample,carrying out Gaussian fitting optimization on the non-contact conductivity signal peak spectrum of each soil sample, calculating the soil nutrient ion content of the soil sample by adopting a standardaddition method, constructing a soil nutrient ion content prediction model, inputting the Gaussian peak parameters of the test sample in the soil sample into a soil nutrient ion content prediction model to complete analysis and prediction of the soil nutrient ion content of the test sample, and inputting the Gaussian peak parameters of the soil sample to be detected into the constructed soil nutrient ion content prediction model to obtain the soil nutrient ion content. The method provided by the invention can realize rapid analysis of nutrient ions in soil, and has the characteristics of universality, simplicity, effectiveness and the like.

Description

technical field [0001] The invention relates to the technical field of soil nutrient ion content detection, in particular to a method for detecting soil nutrient ion content based on non-contact conductance signals. Background technique [0002] The traditional monitoring method of soil nutrient ion content is to use field sampling survey, combined with laboratory analysis (flame spectrophotometry, flame atomic absorption method, flow analysis injector method and polarographic method, etc.) to measure the nutrient ion content in soil samples . Although these methods have high accuracy in measuring the content of soil nutrient ions, the process is cumbersome, requires a lot of manpower, material and financial resources, and often has a lag. Therefore, how to quickly and accurately detect the content of soil nutrient ions is of great significance to the realization of precision agriculture and agricultural development. [0003] Capillary electrophoresis technology can quickl...

AI Technical Summary

Problems solved by technology

[0003] Capillary electrophoresis technology can quickly separate the analytes in complex samples. However, the detectors of mainstream commercial capillary electrophoresis instruments are mainly ultraviolet detectors. Because the detection optical path is affected by the inner diameter of the capillary, the sensitivity is low.

The capacitive coupling non-contact conductometric detection method developed in recent years has the advantages of high sensitivity, low cost, and long-term stable performance.

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