Douglas fir (Pseudotsuga menziesii)

Akwai kananan conifers, wasu matsakaita, wasu manya kuma wasu masu sakawa. Da Douglas fir nasa ne na karshen kungiyar. Tare da tsayi tsakanin mita 60 zuwa 75, shine na uku mafi tsayi a duniya, yana matsayi a bayan Sequoia kayan kwalliya (redwood) da Sequoiadendron giganteum (katuwar sequoia).

Tare da wannan halayyar, ƙalilan ne za su yi la'akari da samun sa a cikin lambu, dama? Kuma ba don ƙananan bane, saboda diamita na akwati baya barin sha'aninsu dabam: daga 1,5 zuwa mita 2. Duk da haka, kasancewa mai tsananin sanyi da samun saurin ci gaba, jinsi ne mai ban sha'awa don filaye masu fadi.

Asali da halaye

Kwanciya ce da aka sani da Green Douglasia, Rocky False Green Hemlock, Oregon Pine, Oregon Douglas, ko Douglas Fir 'yar asalin Arewacin Amurka, daga kudu maso yammacin Kanada zuwa tsakiyar California a Amurka. Kamar yadda muka fada, yana iya kaiwa tsayin mita 75, kodayake an sami samfurin mita 100-120 tare da gangar jikin diamita na 4,5 zuwa 6m.

Yawan ci gabansa a hankali yake, amma tsawon rayuwarsa yana da tsayi sosai: aƙalla zai iya kaiwa shekara 500, wani lokacin kuma ya kan wuce 1000. Yana da halin kasancewa da madaidaiciyar kututture, tare da laushi mai laushi da launin toka yayin samari da kuma manyan fasa.

An shirya ganyayyakin a karkace, an dan juya su a gindi, kuma suna kama da allura, 5 zuwa 11cm tsayi da fadin 2-3,5cm. Idan ana shafa su, suna bayar da ƙamshi mai kama da 'ya'yan itace. Cones ɗin suna da jijiyoyin jiki, 5 zuwa 11cm tsayi da 2-3cm faɗi, kuma suna da launin ruwan kasa-orange idan sun girma. Tsaba suna da tsawon 5-6mm ta faɗi 3-4mm, kuma suna da fikafikai 12-15mm.

Peasashe

Akwai biyu:

• Ƙididdiga masu yawa. menziesii- Ya girma a yankuna masu gabar teku daga yamma da tsakiyar Arewacin Amurka.
• Ƙididdiga masu yawa. Glauca: An sani da Mountain Douglasia. Tana tsirowa a cikin cikin tsaunukan Rocky.

Yana amfani

Wannan kwalliyar da ta kasance kuma ana amfani da ita sosai don katako, wanda aka yi aikin kafinta da gina bukkoki, pergolas, da kayan ɗaki na waje, har ma da yin takarda.

Amma kuma shuki ne mai kyawu na kwalliya, kuma don sake dashen itace. A Spain an dasa shi tun daga shekarun 1990 a arewacin yankin teku, wanda nan ne yanayin ya fi dacewa.

Menene damuwarsu?

Idan kana son samun samfurin fir na Douglas, muna bada shawarar ka bashi kulawa kamar haka:

• Yanayi: dole ne ya zama a waje, a cikin cikakkiyar rana ko, idan akwai hasken rana mai ƙarfi, a cikin inuwa mai kusan-rabin Shuka a nesa na aƙalla aƙalla mita 6-7 daga bango, bututu, da sauransu.
• Tierra: yana girma a cikin ƙasa mai ni'ima, waɗanda suke da wadataccen ƙwayoyin halitta, kuma sabo ne.
• Watse: kamar sau 3-4 a mako a lokacin bazara, kuma ɗan rage sauran.
• Mai Talla: a lokacin bazara da bazara tare da Takin gargajiya.
• Yawaita: ta tsaba a lokacin sanyi (suna bukatar sanyi kafin su tsiro).
• Rusticity: yana yin tsayayya har zuwa -18ºC, amma ba ya rayuwa a cikin yanayi mai zafi ko a cikin waɗanda suke da zafi sosai. A cikin yankuna irin su Bahar Rum, alal misali, ana iya girma ne kawai ba tare da matsala a yankunan tsaunuka ba.

Shin kun san wannan bishiyar?