Raw khoom yog lub hauv paus ntawm kev tsim khoom
Raw khoom yog lub hauv paus ntawm kev tsim khoom

Video: Raw khoom yog lub hauv paus ntawm kev tsim khoom

Video: Raw khoom yog lub hauv paus ntawm kev tsim khoom
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Raw khoom yog cov khoom siv rau kev ua haujlwm ntxiv hauv kev tsim khoom. Qhov tseeb, nws yog nrog nws qhov kev tso tawm ntawm txhua yam khoom pib. Nws yog ib qho nyuaj rau overestimate lub luag hauj lwm ntawm cov khoom siv, vim qhov zoo ntawm cov khoom nyob ntawm nws. Niaj hnub no muaj ntau ntau ntawm cov pab pawg sib txawv, subgroups thiab hom raw khoom. Cia peb sim nkag siab qhov kev sib txawv no.

raw khoom yog
raw khoom yog

Dab tsi yog cov khoom siv raw rau kev tsim khoom

Cov ntaub ntawv sau los yog mined feem ntau yog ua tiav los muab cov khoom lag luam tsim nyog rau lawv. Tom qab ntawd lawv mus rau kev muag lossis txuas ntxiv mus koom nrog kev tsim khoom txuas ntxiv mus txog thaum lawv mus txog theem ntawm cov khoom kawg.

dab tsi yog raw khoom
dab tsi yog raw khoom

Ntau yam raw khoom

Kev faib cov ntaub ntawv raw yog lub tswv yim zoo heev. Nws yog kev cai kom paub qhov txawv ntawm ob pawg tseem ceeb: kev lag luam thiab kev ua liaj ua teb. Cov kev lag luam muaj xws li cov ntxhia thiab cov khoom siv hluav taws xob. Agricultural raw khoom yog cereals, khoom siv mis nyuj, nqaij, tshuaj nroj tsuag. Txhua yam ntawm cov khoom siv raw tuaj yeem muab faib ua ob pawg ntxiv: nws tuaj yeem yog thawj (qhia ncaj qha los yog sau) thiab theem nrab (hauv daim ntawv ntawm cov khoom lag luam lossis cov khoom pov tseg). Cov pab pawg thib ob ntawm cov khoom siv dav siv hauv kev lag luam,uas tuaj yeem txo cov nqi ntau. Los ntawm keeb kwm, txhua yam khoom siv raw tuaj yeem muab faib ua 4 pawg:

  1. cog keeb kwm (cereals, txiv hmab txiv ntoo thiab zaub, tshuaj ntsuab).
  2. Tsiaj keeb kwm (cov khoom siv mis nyuj, tsiaj excrement).
  3. Mineral keeb kwm (natural gas, thee).
  4. Biosphere (dej thiab huab cua).
raw khoom classification
raw khoom classification

Kev siv cov khoom siv raw hauv kev tsim khoom

Hnub no muaj ntau qhov kev lag luam. Cov npe ntawm cov kev lag luam ib txwm muaj tau ntxiv txhua hnub nrog cov npe tshiab, uas txhais tau hais tias cov khoom siv tshiab tau tsim thiab siv. Qhov no yog vim ob qho tib si rau kev loj hlob thoob ntiaj teb kev xav tau thiab tsim cov thev naus laus zis. Cov kev taw qhia tseem ceeb tshaj plaws niaj hnub no yog kev txhim kho cov khoom siv hluav taws xob. Yog tias ib puas xyoo dhau los ib tug neeg muaj peev xwm tau txais lub zog los ntawm cov roj thiab cov thee, hnub no lwm qhov chaw tau tsim muaj zog, piv txwv li, cov pa roj. Muaj lwm txoj kev siv tshuab rau kev tsim hluav taws xob, raws li cov txheej txheem fermentation, thaum nyuj dung ua lub zog nqa. Tab sis xws li ntau lawm xws li zus tau tej cov paj rwb ntaub tau xyaum tsis hloov ntau centuries. Cov txheej txheem nws tus kheej tau txhim kho thiab siv tshuab, tab sis cov ntaub ntawv raw yog paj rwb bolls - ib yam li nws yog 3-4 centuries dhau los. Thiab kev lag luam zaub mov hloov tas li. Lub siab xav ntawm cov chaw tsim khoom kom txo cov nqi hloov mus rau hauv kev tshawb nrhiav rau hom tshiab ntawm cov khoom qub. Ntuj raw khoom yog qhov kev xaiv zoo tshaj plaws. Txawm li cas los xij, hmoov tsis, txhawm rau txuag nyiaj, nws yog feem ntauhloov los ntawm ib qho khoom siv dag zog. Yog li, niaj hnub no ib tus tuaj yeem soj ntsuam qhov xwm txheej uas qee qhov kev lag luam tsim khoom txuas ntxiv siv cov khoom siv raw rau ntau pua xyoo, thaum lwm tus tsim thev naus laus zis thiab tsim cov khoom siv tshiab.

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