Lapho utshani bomdabu: ikakhulukazi umsuka kanye nesakhiwo

Lapho bomdabu utshani futhi abanye sangomhla emuva onyakeni ngokubukeka kwabo emhlabeni? Hard ukukholelwa, kodwa kukhulunywa ngaye okokuqala lezi zitshalo zenzeka esikhathini ngaphambi kwesikhathi sethu esivamile. Ngenxa isakhiwo indlela afakiwe okusanhlamvu akwazi ukuxoxa okwandile ezikhathini zanamuhla?

isikhundla izinhlelo okusanhlamvu

Izinhlamvu umndeni kuyinto omele ejwayelekile izitshalo ephakeme Division angiosperms futhi ikilasi Monocotyledons. Sinenkosi isakhiwo esinezimila futhi inqubo ukuthuthukiswa yakha imbali nezithelo. Njengazo zonke monocots, basuke libhekene kokuba cotyledon esisodwa-embryo yoke, fibrous uhlelo impande. cambium yokuntuleka, amahlamvu komugqa elula. Zizathu okusanhlamvu bayingxenye ehlelekile idatha amayunithi.

Umndeni okusanhlamvu: izici isici kwesakhiwo

Uma sicabanga utshani lapho bomdabu ngokushesha kufanele ihlole indlela ubuhlobo netimphawu ukukhula la magciwane. Lezi zitshalo owaziwa kusukela phambi kwesihlalo sokwahlulela sikaKristu. Nokho, ngokuhamba kwesikhathi, ukubaluleka kwabo akugcini nje ninganciphi, kodwa lenyuka kakhulu. Ngokwesibonelo, uhlobo lwe of izitshalo zisetshenziswa bomkhaya okusanhlamvu, ezifana kakolweni, "feeds" lonke lwesintu emhlabeni. Ngemva kwakho konke yathela ufulawa, isinkwa, ehla, okusanhlamvu kanye pasta.

Zonke okusanhlamvu kukhona herbaceous. Sinenkosi ozwakala neziqu, ngokuthi culm. Ngokusobala zihlukaniswa isayithi lokunamathelisa amahlamvu - ISIZINDA,. Ukukhula uhlobo - intercalated. Ihamba wokudla elula, sessile, nge venation ngokulinganisa. izakhiwo Special kuhluke nezimbali. Sinenkosi stamens amathathu pistil, okuyinto amagatsha zibe izingxenye ezimbili. izakhiwo ezinjalo umoya-impova, ngakho eqoqwe inflorescence. Ziyakwazi ngokuthi izindlebe. Ngezinye yokuvuthwa kwabo isithelo caryopsis kwakhiwa.

utshani kuphi bomdabu

Umbuzo azalelwa izitshalo iphindela ezikhathini komlando. Le nkathi sihlehlela kusukela BC 4-5 leminyaka. Kwakuphakathi nalesi sikhathi le ndoda yaqala ukuba sikhule kakolweni. India, e-Ethiopia, Greece, Macedonia, eMesophothamiya ... kube izitshalo wokudla ukusakaza phezu insimu ka-Asia, eMelika, e-Australia, e-Afrika. Manje, lokhu izitshalo zikhuliswa yonke indawo, kanye namazwe uncintisana ngokuya ukukhiqizwa yayo. Kodwa corn, ngokuphambene wafika Eurasia evela entshonalanga. Ngokwesibonelo, e-Russia yokuthi yaqala ukukhulunywa kutshalwa kuphela ngekhulu le-15. Ngakho-ke, ukuze uphendule lo mbuzo, lapho utshani bomdabu, ngokucacile ngempela kunzima.

Kuvele Eqinisweni ezithakazelisayo wukuthi rye njengoba isiko ehlukile eqala ukukhuluphala cishe ngengozi. Kwaphela isikhathi eside lalibhekwa ukhula, ukusakaza phakathi izithombo kakolweni. Ngo ezisenyakatho isiko main ayikwazanga ukuzivumelanisa futhi afe, futhi rye ekhulako. Ngubani isinkwa lesi wokudla kuthandwa kakhulu yonke indawo.

Izazi eziningi baphikisa ngokuthi yokuqala emhlabeni eqala ukukhuluphala ibhali. Wayengumuntu zithandwa kakhulu futhi abantu abaningi sebekholelwa esipholile ngisho ezisenyakatho emhlabeni. Kodwa lokushisa ongaphakeme kuyingozi ukuba khona kwalezi zilwane. Ngakho-ke, i-sebhali ngelinye kakolweni rye.

Meaning of okusanhlamvu

Okusanhlamvu kukhona kokubili izitshalo eziningi zasendulo nezanamuhla. Ngokwesibonelo, manje zihlanganisa ilayisi ekudleni ezingaphezu kuka-60% yesizwe sonkana jikelele. Isibalo esifanayo uchaza ukukhiqizwa komoba, okuyilona elisebenzayo futhi okusanhlamvu. Futhi njengoba kakolweni, rye, ibhali kanye nezitshalo unyaluthi kubalulekile ukwenziwa isinkwa nokusanhlamvu.

Okusanhlamvu ungomunye izitshalo endala esetshenziswa indoda ekuphileni kwakhe.