Rapid detection method for sorghum halepense and similar species

A detection method, the technology of false sorghum, applied in measuring devices, material analysis through optical means, instruments, etc., can solve the problems of complicated operation process and long time consumption, and achieve the effect of high recognition accuracy and accurate identification
CN103743705AInactive Publication Date: 2014-04-23YANCHENG INST OF TECH
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
YANCHENG INST OF TECH
Publication Date
2014-04-23
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The invention discloses a rapid detection method for sorghum halepense and similar species based on a near infrared spectrum. The method comprises the following steps: adopting the near infrared spectrum to obtain spectral reflectance characteristic curves of three kinds of sorghum seeds of sorghum, sorghum halepense and sorghum sudanense between 325-1075 nm, adopting a partial least squares method for pattern character analysis, and adopting a cross validation method for judgment to determine that the optimal number of principal components is 9; after character extraction is completed, using the 9 kinds of principal components as the input variable of neural network, establishing three layers of BP (Back Propagation) neural networks, and calculating the category of each seed. The method combines the near infrared spectrum analysis with a chemical measurement method to rapidly and accurately judge the category of the three kinds of sorghum seeds, the detection time is greatly shortened, the detection efficiency is improved, and the detection cost is reduced.
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Description

technical field

[0001] The invention relates to the field of entry-exit inspection and quarantine, in particular to a rapid detection method for false sorghum and its similar species. Background technique

[0002] Sorghum (Sorghum) has a variety of plants that are widely grown in various arid regions of the world as food, feed and industrial raw materials. However, a considerable part of the Sorghum genus belongs to invasive plants or invasive species, the most representative of which is S. halepense (L. Pers) . False sorghum is one of the top ten vicious weeds in the world. It can reproduce together with rhizomes and seeds, and has a strong ability to destroy the diversity of vegetation in my country. It is harmful, reproduces quickly, and is difficult to control. It is a quarantine pest for imported plants in my country. . False sorghum was originally introduced and distributed only in Fujian, Guangdong, and Taiwan. However, with the increasing quantity of grain imports, ...

Claims

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