Teb: Thaum tsob ntoo tau raug puas tsuaj los ntawm kev tshem cov tawv ntoo, tsob ntoo yuav tuag nyob ntawm seb nws tau khi li cas… ib nrab lossis ntau dua, qhov muaj feem ntawm tsob ntoo tuag nce. Ua kom tiav girdling (cov tawv ntoo tshem tawm los ntawm ib pab kiag li encircling tsob ntoo) yeej yuav tua tsob ntoo.
Yuav ntev npaum li cas rau ib lub nplhaib tawv ntoo kom tuag?
Los yog, cov txheej txheem uas cuam tshuam nrog kev tshem tawm / tshem tawm lub nplhaib ntawm cov tawv ntoo ntawm tsob ntoo, thiab txheej phloem (Zoo li pom hauv daim duab saum toj no). Yog lawm, qhov no tua ib tsob ntoo. Thiab nws yog qeeb tuag. Ib tsob ntoo uas tau girdled tuag maj mam li ntawm ib xyoos lossis ntau dua.
tsob ntoo puas muaj sia nyob lub nplhaib barking?
Nceev tau muaj sia nyob lub nplhaib-barking thiab girdling rau 50% ntawm lawv lub cev cov ntaub so ntswg(Lub tsev, 1984) thiab cov ntoo hluas ntawm Eucalyptus camaldulensis, Platanus orientalis thiab Acacia melanoxylon ciaj sia. thiab rov qab los ntawm 60, 75, 90 thiab txawm 100% kev puas tsuaj (Priestley 2004).
tsob ntoo puas tuaj yeem rov qab los ntawm kev puas tsuaj?
Yog tias tsawg dua 25% ntawm cov tawv ntoo nyob ib ncig ntawm lub pob tw tau raug puas lawm, tsob ntoo yuav zoo dua Thaum qhov txhab tshiab tshwm sim ntawm lub pob tw, cov tawv ntoo raug mob yuav tsum tau muab tshem tawm kom zoo., tawm hauv cov tawv nqaij noj qab nyob zoo uas yog suab thiab nruj rau ntoo. Kev hnav khaub ncaws (tsob ntoo) tsis tsim nyog.
Koj kho tsob ntoo tawv ntoo puas zoo li cas?
Kev qhia
- Tau tsob ntoo qhov txhab nrog dej (tsis muaj dab tsi ntxiv).
- Sau cov tawv ntoo thiab muab lawv rov qab rau ntawm tsob ntoo. Xyuas kom paub tseeb tias koj tso cov tawv ntoo, yog li nws loj hlob nyob rau hauv txoj cai.
- Txhim kho cov tawv ntoo nrog cov kab lus qhwv ib ncig ntawm tsob ntoo.
- Tshem daim kab xev hauv ib xyoos yog tias nws tseem ruaj ntseg.
