Early Diagnosis Method of Pine Wood Nematode Disease

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

Active Publication Date: 2016-04-06
BEIJING ACADEMY OF AGRICULTURE & FORESTRY SCIENCES
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  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Early Diagnosis Method of Pine Wood Nematode Disease
  • Early Diagnosis Method of Pine Wood Nematode Disease
  • Early Diagnosis Method of Pine Wood Nematode Disease

Examples

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Embodiment Construction

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

[0024] Example Early diagnosis method of pine wood nematode

[0025] The schematic flowchart of the method for early diagnosis modeling and prediction (diagnosis) of pine wood nematode provided in this example is as follows: figure 1 shown. The specific method includes the following 4 steps:

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

[0027] (2) According to the near-infrared spectral data of the training set, establish a pine wood nematode disease discrimination model, and determine the critical point and discrimination threshold of the model;

[0028] (3) Collect near-infra...

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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. Background technique [0002] Pine wood nematode is listed as the No. 1 phytosanitary object in the world. Since it was first discovered in my country in 1982 at the Sun Yat-sen Mausoleum in Nanjing, it has spread rapidly in the main producing areas of pine trees in the south. Pine wood nematode disease has the characteristics of short disease course and extremely high mortality rate of pine trees. Generally, it only takes about 40 days for pine trees to die from the disease. Effective prevention of the disease has always been a challenging problem faced by my country's forestry sector. [0003] At present, scholars have successfully developed treatment methods and preparations for pine wood nematode disease, which can effectively treat pine wood nematode disease within 20 days of pine infection. However, even ...

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Application Information

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Patent Type & Authority Patents(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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