Bark beetles yog cov kab tsuag txaus ntshai tshaj plaws rau cov ntoo spruce. Lawv feem ntau tua cov ntoo uas tsis muaj zog. Hauv tsab xov xwm no peb yuav piav qhia rau koj tias koj tuaj yeem paub tias cov kab tsis zoo no tau nyob ntawm koj lub conifer thiab yuav ua li cas yog tias nws kis tau.
Yuav ua li cas koj paub bark beetles ntawm spruce ntoo?
Ib kab kab kab mob ntawm tsob ntoo tuaj yeem pom tau los ntawm kev sib sau ntawm cov hmoov av tho, ncig lub qhov tho, cov dej tawm tshiab, cov koob daj ntawm tsob ntoo, koob ntsuab rau hauv av thiab cov tawv ntoo poob. Tus kab mob spruce feem ntau tsis tuaj yeem cawm tau thiab yuav tsum raug tshem tawm.
Yuav ua li cas koj thiaj paub tias muaj kab kab kab kab mob rau ntawm spruce?
Nyob ntawm theem ntawm kev kis kab mob, kev sib haum xeeb ntawm cov kab kab tuaj yeem pom tau los ntawm ntau yam yam ntxwv:
Infestation stage 1 – Bark beetles bore into the trunk:
- Xaiv plua plav pov tseg ntawm cov tawv ntoo, ntawm lub hauv paus ntawm lub cev thiab hauv cov nroj tsuag ib puag ncig
- voj voog laum qhov nrog ib txoj kab uas hla ntawm approx. 3 mm nyob rau hauv tawv tawv
Infestation stage 2 – Bark beetles lay their brood (kwv yees 2-3 asthiv tom qab drilling):
- fresh resin flow
- yellowed koob on the tree
- muab ntsuab rau hauv av
- “Woodpecker mirror” (cov kab ntawm cov ntoo pecker ntawm lub cev)
Infestation stage 3 – Bark beetles have left the now dead spruce:
- green crown
- Nkauj tawm tshiab
Bark beetles coj tus cwj pwm li cas ntawm tus kab mob spruce?
Bark beetlesdhau los ntawm cov tawv ntoo, nyob rau hauv cov kua txiv hmab txiv ntoo uas lawv tsim. Los ntawm kev pub mis, cov kab laus thiab cov menyuam yaus rhuav tshem cov ntaub so ntswg uas tseem ceeb rau cov spruce.
Cov kab kab kab hom phau ntawv tshuab luam ntawv thiab cov engravers yog qhov txaus ntshai tshwj xeeb rau conifers:
- ThePhau ntawv tshuab luam ntawv tawm tsam cov ntoo laus thiab cov pob tw tuab.
- Tustooj liab engraver nyiam cov tawv nyias nyias thiab cov ceg tawv dua.
Teeb meem: Qee lub sij hawm bark beetles "tsuas" colonize lub crown ntawm cov ntoo spruce laus - tom qab ntawd cov kab mob yog qhov nyuaj rau kev kuaj xyuas.
Koj puas tuaj yeem tiv thaiv kab kab kab mob ntawm tsob ntoo spruce?
Thaum tsob ntoo muaj kab mob, nws nyuaj rau cawmKev siv tshuaj tua kab yog txwv tsis pub rau cov ntoo sawv thiab tsis ua haujlwm. Nws tsis tshua muaj txaus kom pom tawm cov ceg ntoo cuam tshuam - lub spruce feem ntau yuav tsum tau muab tshem tawm tag. Qhov no yuav tsum tau ua kom sai li sai tau ua raws li cov lus qhia hauv zos.
Kom nrawm nrawm, tshem cov tawv ntoo ntawm tsob ntoo cuam tshuam thiabhlawv cov tawv ntoo thiab cov larvaeTxawm hais tias qhov no tsis txuag cov ntoo cuam tshuam ncaj qha, nws tiv thaiv cov ntoo nyob sib ze. Txoj cai tseem ceeb yog:pov tseg cov ntoo uas muaj kab mob sai thiab huv si
Tip
Tshwj xeeb tiv thaiv kab kab kab kab mob ntawm spruce
Bark beetles tuaj yeem ya hla qhov deb txog li 600 meters. Yog li ntawd, tsis tsuas yog spruce ntoo nyob rau hauv lub hav zoov, tab sis kuj cov neeg nyob rau hauv cov tiaj ua si thiab private vaj yuav muaj kev pheej hmoo. Cov kab tsuag feem ntau tua cov ntoo tsis muaj zog. Yog li ntawd, tib txoj hauv kev los tiv thaiv kab kab kab kab kab mob yog ua kom koj tus kheej ntoo spruce tseem ceeb thiab noj qab nyob zoo. Ua tib zoo saib xyuas kom zoo nrog cov dej thiab cov khoom noj zoo.
