UČINEK RAZLIČNIH NAČINOV GNOJENJA IN KMETOVANJA NA VSEBNOST ORGANSKE SNOVI IN HRANIL V TLEH V POSEVKU ŠČITASTOPLODNE METELJKE (Medicago scutellata ’Robinson’)

Ghobad Shabani, M. R. Chaichi, Mohammad Reza Ardakani, J. K. FRIDEL, K. Khavazi

Povzetek


V poskusu je bil preučevan učinek različnih načinov gnojenja in kmetovanja na vsebnost organske snovi in hranil v tleh v posevku ščitastoplodne meteljke (Medicago scutellata ‘Robinson’). Gnojenja so obsegala kontrolo (brez gnojil), mineralna gnojila, biološka gnojila in integrirano gnojenje (različne kombinacije mineralnih in bioloških gnojil). Načina kmetovanja sta bila kmetovanje z namakanjem in brez namakanja. Poskus je potekal na dveh poskusnih mestih, ki sta se razlikovali v talnih in podnebnih razmerah v provinci Kermanshah, Iran, v rastni sezoni 2009. Največja vsebnost organske snovi v tleh (1.28 %) je bila izmerjena pri integriranemu načinu gnojenja, v katerem so uporabili bakterije, ki vežejo zračni dušik in bakterije, ki sproščajo fosfor. Večina dušika, ki je bila dodana v obliki mineralnih gnojil, je bila izprana iz tal, pri integriranem gnojenju pa se je koncentracija dušika v tleh povečala zaradi počasnejšega sproščanja in učinkovitega privzema v rastline. Glede na izsledke te raziskave lahko zaključimo, da je integrirani način gnojenja uspešnejši pri kmetovanju brez namakanja v primerjavi z drugimi načini gnojenja.

Ključne besede


ščitastoplodna meteljka; način gnojenja; način kmetovanja; vsebnost hranil v tleh; organska snov tal; podnebne razmere

Celotno besedilo:

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Literatura


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DOI: http://dx.doi.org/10.14720/aas.2017.109.1.01

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