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A kind of pine wood nematode diseased wood and its treatment method

A technology of pine wood nematode and treatment method, which is applied in wood treatment, wood heat treatment, wood treatment details and other directions, can solve the problems of complex process, low treatment efficiency of diseased wood and its residues, etc., and achieves high dimensional stability, high outdoor The effect of durability

Active Publication Date: 2021-04-09
HARBIN THREE WIND VEOLIA ENVIRONMENTAL ART CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention solves the technical problems of low efficiency and complex process in the prior art for treating infested wood and its residues, and further proposes a method for treating pine wood nematode infested wood

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0020] A kind of pine wood nematode plague wood treatment method of the present invention mainly comprises the following steps:

[0021] Step 1. Process the diseased wood and prepare fuel: harvest the diseased wood and process it into a standard board, and then crush the residue generated from the harvesting and processing of the board into particles and fine powder;

[0022] Step 2, preparation of fuel: the particles and micropowder prepared in the above steps are prepared into three kinds of fuels of type A, type B and type C, which are mixed according to the following mass ratios respectively;

[0023] Type A fuel is mixed with 70% pellets, 10% water and 20% fines; Type B fuel is mixed with 80% pellets and 20% water; Type C fuel is mixed with 60% pellets, 10% water and 30% fines;

[0024] Step 3. Heat treatment of infected wood boards: stack the infected wood boards into the raw material cabin of the wood heat treatment kiln, the gap between the board layers is not less tha...

specific Embodiment approach 2

[0031] The difference from Embodiment 1 is that in this embodiment, the particle diameter is 2-5 mm, and the fine powder is 40-60 mesh, which are used to prepare different fuels required in different treatment stages.

specific Embodiment approach 3

[0033] The difference from Embodiment 1 or Embodiment 2 is that in this embodiment, the boards of infected wood are piled into the raw material cabin of the wood heat treatment kiln, and the gap between the board layers is not less than 20mm.

[0034] Table 1 is a comparison table of treatment parameters of pine wood nematode diseased wood

[0035] Table 1

[0036] Classification GB / T23477-2009 this invention Moisture content of diseased wood ＞30％ 0 Processing temperature ＞65℃ ＞150℃ processing environment aerobic Oxygen content is less than 4% processing time 4h ＞72h

[0037] The necessary conditions for the survival of pine xylophilus are a temperature of 25 to 30 degrees, a relative humidity of about 30%, and an aerobic environment. The treatment parameters specified in GB23477-2009 are as shown in Table 1. The wood core treatment temperature must reach above 65 degrees, and the treatment time lasts for four hours, which can ac...

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Abstract

The invention relates to a pine wood nematode diseased wood and a treatment method thereof, comprising the following steps: Step 1, processing the diseased wood and preparing fuel: harvesting the diseased wood and processing it into a standard board, and then crushing the residue produced by the felling and processing the board Forming into granules and micropowders; step 2, preparing fuel: preparing the granules and micropowders prepared in the above steps into three kinds of fuels of type A, type B and type C. The present invention uses the harvesting residues and processing residues of infected wood as biomass energy, and burns them under specific conditions. According to the growth characteristics of pine xylophilus and the conditions required for reproduction and growth inside the wood, combined with conventional wood heat treatment technology, it can be used in treatment facilities It forms multiple environments such as staged hypoxia, anhydrous, high temperature exceeding 150 degrees and acidification treatment to completely destroy the pine xylophilus.

Description

technical field [0001] The invention belongs to the field of forest protection, and in particular relates to a pine wood nematode diseased wood and a treatment method thereof. Background technique [0002] Pine wood nematode disease is a devastating forest disease caused by pine wood nematode. It is a major alien invasive species in my country and has been included in the domestic and foreign forest plant quarantine targets. This disease has been introduced into my country since 1982. Since then, the rapid spread has caused the death of a large number of coniferous species such as black pine, red pine, and masson pine, causing serious damage to my country's pine forest resources, natural landscapes, and ecological environments, and huge economic losses. [0003] According to the national technical specification GB / T23477-2009 for the treatment of pine wood nematode diseased wood, there are currently 7 treatment methods for pine wood nematode diseased wood, which are divided i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27K5/00
CPCB27K5/0085
Inventor 孙伟伦
Owner HARBIN THREE WIND VEOLIA ENVIRONMENTAL ART CO LTD