Dwarf the willow: kuti hunhu izvo kukura?

Botanists kare kuzivikanwa kuti vamwe miti kukura dzakawanda, kusanganisira nemiti uye kunyange vakasiyana-siyana. Humwe howa yakadaro zvipfupi the willow.

More zvakananga, zita iri hakusi mhando, uye muzvizhinji kuti mhando zvinoshamisa miti, pamusoro tichataura nhasi.

Vazhinji vavo vakure kweArctic Circle uye panguva pamatunhu altitudes. Alps, iri pfupi the willow kuwanikwa panzvimbo kukwira pamusoro 3.2? Km. Ndakaona muti uyu, kunyange pazvitsuwa Svalbard.

MuUnited States anokura Labrador. All of the willow mhuri dzakasiyana kunoita kunyorovesa nzvimbo vanosarudza kukura mhenderekedzo, dzimwe nguva kunyange munzvimbo dziri kugara egungwa mabhanzi.

Vanenge vose vamiririri vavo vakanaka, kuti pakarepo akawana kuzivikanwa munhau nzvimbo vagadziri. Zvikurukuru, vari varumbidzwa kushandiswa nokudyara dombo mapindu uye matombo munzvimbo.

Dwarf the willow zvakakwana unopikiana nechando uye refu kugara pasi chando nokuti ayo hunde dzacho duku Dombo rekare rakanyorwa nezvokukunda pedyo pasi.

Oval itsvo kureba 6 mm zvakasimba akamanikidzwa kuti mabukira. On imwe Nhungirwa hwapedyo anopfuura 3-4 mashizha. Stipules kwete.

Mashizha akawanda zvipenyu dzinoratidzwa avo broadly kuumba, muromo wavo kunhivi kana ane diki notch, kureba yavo kashoma kupfuura 25-27 mm.

Uyezve, vaduku mashizha kusiyaniswa kuvapo "fuzz" kumativi ose, asi vakura makopi nayo inoramba chete pamwe mashizha kuchekwa.

Pasinei rudo hydration zvakanaka, zvipfupi the willow zvakajairika chaizvo pamatombo neyemitenusirwa, kazhinji inokura pamuganhu zvikanganiso uye padombo, kunyanya havo calcareous matombo. Inoita acidification yakanaka (uye salinity, sezvatakagamuchira akati) nevhu. Chichiburutswa pasi pakarepo mabukira midzi.

In mhando kuti vachikura siyana okunze dzinodengenyeka, pane zvakakomba kusiyana mukufamba hari. In pemwedzi April nhungirwa zvipfupi nemikonachando Alps, uye mangwanani Dai kutanga kune kukura mwaka mamwe marudzi.

Pasinei fanano, zvirimwa izvi zvakasiyana chaizvo kubva mumwe mune mwero pubescence nemashizha uye vaduku mabukira, uyewo ukuru hunde. Saka, S. reticulata, inobereka iri kuNorthern Urals, ane mabukira asi refu, richisvika masendimita 25, rima mutema, Rakaunyana mashizha.

By Khibiny zvinoshandawo miti the willow idenderedzwa zvipfupi, izvo muchadya haasviki chinokosha ukoshi. Alpine mhando zvakatonyanya Petite. Vane Zvinhu Zvisina Basa iri underside ari jira kwenguva refu.

Zvose izvi nemiti vashomashoma kukura havaratidzi, saka rooting zvakanaka kushandisa chete majaya mabukira, sezvo mitsipa vanenge mudzi. Zvakanakisisa midzi miti kubva kuNorthern Urals. Saka, kwemakore matatu, vanosvika chete kukura sezvo Khibiny makopi mumakore 11.

Zvisinei marudzi, kuti pfupi the willow (mapikicha iyo vane munyaya) zvikuru husingakwanisi tupembenene nechando uye kushaya zvokudya muvhu.