Online early warning method and system for plant diseases in facilities based on Terahertz spectroscopy

Abstract

The invention relates to an online early warning method for plant diseases in facilities based on Terahertz spectroscopy. The method comprises the following steps: S1, selecting first and second sampling points of a plant for extracting air; S2, acquiring Terahertz spectrum intensity values of the first and second sampling points through Terahertz spectrometer detection; S3, calculating the difference of the Terahertz spectrum intensity values of the first and second sampling points; S4, judging whether the content of disease spores in air near the plant exceeds the standard or not according to comparison between the difference of the Terahertz spectrum intensity values of the first and second sampling points and an experience threshold. A point close to the middle lower part of the crop in the facility and a point which is far away from the crop are selected, the strong absorption characteristic of water on Terahertz waves is utilized, absorption of air at the sampling point on the Terahertz spectrum is measured in real time, the difference is found, the distribution number of the disease spores in the air near the crop is judged by comparing the difference with the experience threshold, and a real-time disease early warning aim is achieved. The invention also discloses an online early warning system for plant diseases in facilities based on Terahertz spectroscopy.

Description

technical field [0001] The invention relates to the technical field of computer agriculture, in particular to an online warning method and system for plant diseases in facilities based on terahertz spectrum technology. Background technique [0002] Facility horticulture is a modern agricultural production method that provides the most suitable environment and conditions for each stage of commercialization of horticultural agricultural products to get rid of the shackles of the natural environment and traditional production conditions, and obtain high-yield, high-quality, efficient and safe agricultural products. It has technical equipment and process science The characteristics of modernization, intensification of methods and modernization of management. Protected horticulture production has become an important agricultural type in my country. Plant diseases are one of the most prominent natural disasters in agricultural production, causing losses of 13%-20% to global crop ...

AI Technical Summary

Problems solved by technology

Bacterial infection presents the characteristics of fast speed and great harm. The existing prevention methods rely on farmers’ experience or use spore traps, etc., and take the air in the facility and the diseased leaves to be collected indoors for laboratory analysis for identification, and then take corresponding countermeasures Measures cannot meet the needs of accurate, timely, fast and effective prevention, and fast, effective and timely scientific detection and early warning methods become the need

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