Feem ntau muaj 2 hom kab tsuag uas tsom koj xiav spruce. Koj tuaj yeem nrhiav seb cov no yog dab tsi thiab yuav txheeb xyuas cov kab tsuag li cas ntawm no. Kuj tseem muaj cov lus qhia tseem ceeb rau kev sib ntaus sib tua.
Dab tsi kab tsuag tua xiav spruce ntoo thiab koj tua lawv li cas?
Cov kab kab tseem ceeb ntawm xiav spruce yog phau ntawv tshuab luam ntawv (Ips typographus), kab kab, thiab spruce gall louse (Sacchiphantes viridis). Kev tiv thaiv thiab kev tswj hwm suav nrog kev saib xyuas kev txiav txim siab, pheromone-muaj cov nplaum nplaum, tshem tawm cov ceg ntoo, thiab siv cov tshuaj tua kab roj paraffin.
Kev mob nrog phau ntawv luam tawm hem tag nrho tsis ua haujlwm
Lawv ntev 4-5 mm, muaj lub cev xim av thiab zes nyob rau hauv droves nyob rau hauv bark. Cov kab kab kab ntawm cov phau ntawv tshuab luam ntawv (Ips typographus) tau tshwj xeeb hauv kev cuam tshuam cov ntoo spruce txhawm rau txhawm rau txhawm rau tawg. Nyob rau hauv lub siab kab mob siab, mus txog 25,000 beetles zes nyob rau hauv koj xiav spruce, kom tsob ntoo yog hopelessly poob.
Vim tias tam sim no tsis muaj cov neeg saib xyuas kev tswj hwm zoo, tib txoj hauv kev kom cov neeg tawm tsam me me kom deb ntawm koj Norway spruce yog los ntawm kev saib xyuas kom zoo. Nyob rau hauv ib tsob ntoo noj qab haus huv, cov kua dej ntws ntau heev uas cov kab tsuag poob rau hauv nws. Yog li ntawd, dej tsis tu ncua tsis ua rau dej nkag. Tsis txhob muaj nitrogen-nplua nuj fertilization thiab raug mob rau cov hauv paus hniav thiab tawv ntoo. Pheromone nplaum ntxiab ntes cov phau ntawv luam tawm nyob rau theem pib kis.
Yuav ua li cas paub txog tus kab mob spruce kab laug sab
Yog tias koj cov xiav spruce npog me me, zoo li pineapple galls nyob rau lub caij nplooj ntoo hlav, spruce gall louse (Sacchiphantes viridis) tab tom ua nws txoj haujlwm tsis zoo. Lwm tiam ntawm cov ntshauv hlob nyob rau hauv lub galls thiab nqus cov kua txiv tawm ntawm nplooj. Nyob rau hauv siab infestation siab, koob tig xim av los yog tag nrho tua tuag. Nov yog qhov koj ua rau cov kab tsuag:
- Txiav thiab rhuav tshem cov ceg ntoo
- Kho cov xiav spruce nrog tshuaj tua kab raws li roj paraffin
- Kos pH tus nqi hauv av thiab kho rau 6.5 txog 7.5 yog tsim nyog
Mulch tsis tu ncua nrog wilted nyom clippings kom lub spruce gall louse ntawm bay. Ib txoj hauv kev zoo tshaj plaws ntawm kev tiv thaiv yog muaj cov neeg nplua nuj ntawm cov kab muaj txiaj ntsig hauv lub vaj. Lacewings, parasitic wasps, ladybirds thiab txhua yam noog zoo siab mus yos hav zoov cov cab.
Tip
Yog tias koj cog xiav spruce hauv koj lub vaj, thov zam qhov ze ze ntawm rhododendrons thaum xaiv qhov chaw. Nyob rau lub caij ntuj sov, cov kab mob ntawm cov kab mob fungal spruce koob xeb (Chrysomyxa) nyob ntawm cov ntoo paj thiab nyiam hloov cov tswv rau koj cov spruce thiab tuaj yeem ua rau cov koob tseem ceeb poob rau ntawd.
