A kind of biological control method for effectively controlling pine wood nematode disease in monochamus

A technology for pine wood nematode disease and pine wood nematode, which is applied in the field of biological control of pine wood nematode disease and effectively controls pine wood nematode disease.

Active Publication Date: 2021-08-27
HEZE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although pine xylophilus is a serious hazard, it has a fatal weakness - it cannot spread by itself, and must rely on vector insects such as the pine wood nematode to spread and spread
However, because the pine beetle usually lives under the bark and xylem of pine trees, eats and harms, and its lifestyle is very hidden, it is very difficult to prevent and control in conventional ways

Method used

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  • A kind of biological control method for effectively controlling pine wood nematode disease in monochamus
  • A kind of biological control method for effectively controlling pine wood nematode disease in monochamus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] In the pine tree planting area of ​​Jilin City, Jilin Province, before the pupation of Monochamus alternata began at the end of April and the beginning of May, 90 Masson pines that were tested to contain Monochamus larvae larvae were selected for effect verification. The specific identification method is: Pine trees infested by nematodes do not shed fat after drilling, and there are traces of chrysalis laying eggs, and some pine needles lose green and yellow.

[0022] Choose among the pine trees, take 30 strains as the first experimental group, 30 strains as the second experimental group, and 30 strains as the blank group, drill 1cm deep holes with a diameter of 2cm at the tree body sunny side xylem pine tree borer into the hole, It communicates with the pupal chamber of the pine brown monochamus larvae.

[0023] In the hole of the pine tree of the first experimental group, some silicone rubber plugs (the amount of morroniside adsorption is 1 μl / piece) adsorbed with cor...

Embodiment 2

[0032] In the same manner as in application example 1, before the pupation of Monochamus alternatus began at the end of April and the beginning of May, in the pine tree planting area of ​​Jilin City, Jilin Province, 100 pines of masson that were detected to contain Monochamus larvae were selected for effect. Verification, the specific identification method is: the pine tree with pine xylophilus damage does not flow grease after drilling, there are traces of pine brown monochamus spawning grooves, and some pine needles lose green and yellow.

[0033] Among the selected pine trees, 25 as the first experimental group, 25 as the second experimental group, 25 as the third experimental group, and 25 as the fourth experimental group, the xylem of the tree on the sunny side of the tree was bored into the hole. Drill a hole with a diameter of 1 cm and a depth of 2 cm with an electric drill, and communicate with the pupal chamber of the pine beetle larvae.

[0034] In the hole of the pi...

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Abstract

The invention belongs to the technical field of agricultural pest control, and in particular relates to a biological control method for effectively controlling pine wood nematode disease by biological control of monochamus. The method for effectively controlling pine wood nematode disease by the biological control of Monochamus alternata described in the present invention is to apply Cornus officinalis extract in pine trees containing Monochamus larvae before the pupation of Monochamus alternata at the end of April and the beginning of May each year The method of / morroniside can effectively block the pupation of monochamus alternatus, stop the development of monochamus larvae, reduce the population density of pine xylophilus pupae and adults, and then reduce the mortality of pine trees. At the same time, it also effectively prevents Subsequent pine wood nematodes formed a diffuse fourth-instar nematode with the eclosion of Monochamus alternatus, which effectively blocked the spread of pine wood nematodes, thereby reducing the mortality rate and spread speed of pine trees in areas where pine wood nematodes occurred, and preventing the spread of pine wood nematodes in forests. The prevention and control goal of further spread and expansion in the region can solve the problem of large-scale reproduction and rapid spread of pine wood nematode in the place where the pine wood nematode epidemic occurs.

Description

technical field [0001] The invention belongs to the technical field of agricultural pest control, and in particular relates to a biological control method for effectively controlling pine wood nematode disease by biological control of monochamus. Background technique [0002] Pine wood nematode disease, known as the "cancer" of pine trees, is the most dangerous forest disease in the world. The characteristic is that pine trees can die within 40 days at the fastest after being infected with pine wood nematode, and pine forests can be destroyed within 3-5 years after being infected with the disease, which poses a major threat to the ecological environment construction dominated by forestry in my country. The destructiveness of pine wood nematode disease lies in: strong pathogenicity, fast host death; fast spread, and often caught off guard; once it occurs, it is difficult to control. It not only causes huge losses to the national economy, but also destroys the natural landscap...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N65/08A01N43/90A01P5/00A01G13/00
CPCA01G13/00A01N43/90A01N65/00A01N65/08
Inventor 王步勇问荣荣李莹莹王娟樊庆忠
Owner HEZE UNIV
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