Early Diagnosis Method of Pine Wood Nematode Disease

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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Problems solved by technology

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

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