Leej twg yog peb tsis paub nrog qhov zoo nkauj thiab tsiv tsob ntoo uas muaj ntaub npog kab mob hnav dawb los yog xim daj daj? Nws hlob mus rau 30-45 meters nyob rau hauv qhov siab. Cov nplooj ntawm birch yog puag ncig los yog lanceolate, jagged raws tus sawv. Tus nroj tsuag blooms nyob rau hauv lub caij nplooj ntoos hlav, ua ntej nplooj pib blooming. Cov paj no tau sau rau hauv qhwv ntsej.
Cov txiv hmab txiv ntoo ntawm ib tug birch yog hu ua ib-seeded txiv ntoo, nws muaj ib tug loj ntawm 1-5 mm. Nws muaj ob lub voj voos. Nws yog ib qho kev sib tw ntawm cov lus qhia lenticular, nyob rau sab saum toj uas muaj ob lub hau ntsig. Ripening tshwm sim nruab nrab ntawm nruab nrab-lub caij ntuj sov thiab nruab nrab-Autumn.
Pes tsawg zaus rau tus birch dais txiv hmab txiv ntoo?
Cov txiv hmab txiv ntoo ntawm ib tug birch yog tsim thaum lub qhwv mas fertilized. Qhov no yog raws li nram no: thaum lub caij nplooj ntoos hlav, txiv neej ntsej muag uas muaj wintered nyob hauv lub xeev kaw lawm, qhov teev ntawm cov paj yog qhib thiab stamens uas tshem cov kab npoo ua pom ntawm lawv. Thaum lub sijhawm no, khaus khawm me ntsis thiab tom qab ntawd. Cov poj niam txoj qhwv loj hlob tuaj ntawm cov kis ntawm luv tua, uas pib laterally rau xyoo tas los tua.
Txiv neej thiab poj niam qhwv ntsej muag nplaum tawg ib txhij, thiab tom qab fertilization tus poj niam lengthens thiab thickens vim qhov nce nyob rau hauv lub ntim ntawm teev. Maj mam, nws hloov mus rau hauv ib qho oval lossis oblong lub khob hliav qab.
Muaj pes tsawg zaus hauv ib lub xyoo twg tus birch dais txiv hmab txiv ntoo: ib zaug. Raws li twb tau hais, lub ripening ntawm txiv hmab txiv ntoo yuav siv qhov chaw nyob rau hauv lub caij ntuj sov-Autumn lub sij hawm. Raws li cov xwm txheej climatic, qhov no yuav yog ib lub sij hawm txij Lub Xya Hli mus rau Cuaj Hli. Tom qab maturing, lub txiv hmab txiv ntoo Bud yog da dej, tus pas nrig nyob ntawm nws.
Ntau npaum li cas lub birch dais - txij li ib tug birch yuav muaj peev xwm nyob 100 xyoo los yog ntau tshaj, thiab thawj fructification yog txog 10-20 xyoo, nyob ntawm
Birch - agricultural tshuab
Nyob rau hauv Northern Hemisphere, birch hlob zoo ntawm moderately moist thiab tsis heev ntom xau nplua nuj nyob rau hauv humus. Cov kev loj hlob ntawm cov ntoo tsis zoo heev cuam tshuam los ntawm nyob tus yeees ntawm minerals nyob rau hauv cov av. Qhov tsuas yog yog hais tias nws hlob tsis zoo nyob rau hauv av qaub av.
Cov nroj tsuag yog photophilic, yog li nws xav tau hnub ci txaus. Feem ntau hlob nyob rau hauv ib tug sib tov nrog ntau yam coniferous tsiaj, overtaking lawv nyob rau hauv cov nqe lus ntawm kev loj hlob nqi.
Yog hais tias koj xav cog qoob ua tsob nroj, ua kom nco ntsoov tias lawv qhuav rau av, loj dua sai dua lwm yam ntoo, thiab sib raug zoo nrog firs thiab sawv hips.