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Untitled Prezi

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on 10 June 2013

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Transcript of Untitled Prezi

UMETNA GNOJILA
Nomi Hrast, 8. a
Rešitve zmanjšati vnos umetnih gnojil
Posledice vnosa umetnih gnojil
Vrste umetnih gnojil
vrste umetnih gnojil:
ENOSTAVNA
SESTAVLJENA
TEKOČA
TRDNA
Uporaba
Cilj
Vpliv umetnih gnojil na okolje in ljudi
-industrijsko pridobljene snovi
-omogočajo intenzivno kmetijstvo
- ena izmed primarnih hranil
- tri ali več snovi
- za velike obdelovalne površine
- granulirana oblika
- praškasta oblika
- gnojenje po pravilih
- gnojila morajo biti primerno mešana
- uporaba naravnih gnojil
- če ne gre brez umetnih, jih poskušamo zmanjšati
- onesnaževanje ozračja
- toplogredni učinki
- zdravje
- rodovitnost tal
Full transcript