MAKSIMIZIRANJE PRODUKTIVNOSTI ZEMLJIŠČ S POPESTRITVIJO KOLOBARJA Z MEDSETVIJO IN RAZLIČNIH NAČINOV GNOJENJA Z DUŠIKOVIMI GNOJILI

Abd El-Hafeez Ahmed ZOHRY, Khadra A. ABBADY, Enshrah I.M. EL-MAAZ, Hoda M.R.M. AHMED

Povzetek


V šestih poljskih poskusih je bil preučevan učinek dveh načinov gnojenja z dušikovimi gnojili (urea in oblika ure s počasnim sproščanjem (UF)) na medsetev kitajske vinje s sončnico in pšenice z grahom na Giza Agricultural Research Station, Egypt, v rastnih sezonah 2010, 2011 in 2012. Izveden je bil poskus z deljenkami s tremi ponovitvami. Rezultati so pokazali neznačilen vpliv kolobarja na pridelek pri sončnici in značilen učinek pri vinji. Značilen učinek dušikovih gnojil na pridelek je bil ugotovljen pri sončnici in neznačilen pri vinji. Še več, neznačilni učinek medsebojnega vpliva kolobarja in dušikovih gnojil je bil ugotovljen pri pridelku sončnice in značilen pri pridelku vinje. Pri medsetvi pšenice z grahom sta bili obe poljščini značilno vplivani z medsetvijo. Značilni učinek dušikovih gnojil je bil ugotovljen pri pridelku pšenice in neznačilen pri pridelku graha. Na pšenico in grah je značilno vplivala interakcija kolobarja in gnojenja z dušikom. Večji pridelek je bil dosežen pri kolobarjih z medsetvami, saj je bil ekvivalent zemljišča nad 1,00. Analiza dominance je pokazala, da so bile poljščine metuljnic prevladujoča komponenta. Preučevane kolobarje z medsetvami bi lahko priporočali kmetom zaradi ugodnih donosov.

Ključne besede


medsetev sončnic in kitajske vinje; medsetev pšenice in graha; urea; počasno sproščujoča urea; tekmovalna razmerja

Celotno besedilo:

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Literatura


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DOI: http://dx.doi.org/10.14720/aas.2017.109.3.01

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