Loose material nematodosis early diagnosis method

A technology for pine wood nematode disease and early diagnosis, applied in the field of early diagnosis of pine wood nematode disease

Active Publication Date: 2014-04-30
BEIJING ACADEMY OF AGRICULTURE & FORESTRY SCIENCES
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Problems solved by technology

[0005] The present invention aims to solve the problem of early diagnosis of pine wood nematode disease

Method used

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  • Loose material nematodosis early diagnosis method
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Embodiment Construction

[0023] The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0024] Example pine wood nematode early diagnosis method

[0025] The schematic flow chart of the early diagnosis modeling and prediction (diagnosis) method for pine wood nematode disease provided by this example is as follows figure 1 shown. The specific method includes the following four steps:

[0026] (1) Use a near-infrared spectrometer to collect near-infrared spectra from the pine needles of early-infected (experimental group) pine trees, and at the same time collect near-infrared spectra from pine needles from uninfected (control group) pine trees. The two sets of spectral data constitute the training set;

[0027] (2) According to the near-infrared spectral data of the training set, a discrimination model of pine wood nematode disease was established, and the critical point and discrimination threshold of the model were dete...

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Abstract

The invention provides a loose material nematodosis early diagnosis method. The loose material nematodosis early diagnosis method comprises the following steps of collecting a near infrared spectrum of a pine needle of an early stage disease pine tree by using a near infrared spectroscopy, simultaneously collecting a pine needle of a spectrogram of a non-disease pine tree, and establishing a distinguishing model according to two groups of spectrum data; and collecting a spectrogram of the pine needle to be detected, carrying out forecast operation on the spectrogram by using the distinguishing model, and combining a distinguishing threshold value to judge whether the pine tree to be detected gets a disease according to a forecast value. The loose material nematodosis early diagnosis method provided by the invention takes an near infrared spectrum as a core technology, a distinguishing model is rapidly established through a training set sample, the discovery of a pine material nematodiasis of the pine tree is prolonged about ten days, the effective technic instrument is provided for the early diagnosis of the disease, and the abundant time is provided for the treatment of the disease; the loose material nematodosis early diagnosis method provided by the invention has the characteristics that the rapid high efficiency accuracy is high and the like, the early diagnosis of the pine material nematodiasis is realized, and the important technology instrument is provided for the severe damage of the pine tree caused by the early stage discovery, treatment and preventing pine material nematodiasis.

Description

technical field [0001] The invention relates to the field of early diagnosis of forestry diseases, in particular to an early diagnosis method of pine wood nematode disease. Background technique [0002] Pine wood nematode disease is listed as the No. 1 plant quarantine object in the world. Since it was first discovered in Nanjing Zhongshan Mausoleum in 1982 and introduced into my country, it has spread rapidly in the main pine producing areas in the south. Pine wood nematode disease is characterized by a short course of disease and high mortality of pine trees. Generally, it only takes about 40 days for a pine tree to die from the disease. The effective prevention of the disease has always been a very challenging problem faced by the forestry sector in our country. [0003] At present, scholars have successfully developed a treatment method and preparation for pine wood nematode disease, which can effectively treat pine wood nematode disease within 20 days of pine tree infe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/3563G01N21/359
Inventor 王冬潘立刚李安靖振宇王北洪
Owner BEIJING ACADEMY OF AGRICULTURE & FORESTRY SCIENCES
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