On the modeling the ground particle sizes distribution after secondary by disc harrowing tillage

Abstract

Tillage exposes ground to the influences of different mechanisms of physical decomposition, either directly or indirectly, and crucially changes its mechanical structure. Among others, possible approach in analyzing the quality of each specified operation, or complete tillage process, is to establish the relationships between the operational parameters of the mechanization used and resulting ground particle sizes distribution. This paper suggests the applicability of the Log-Hyperbolic model in describing the ground particles sizes distributions after tillage, as the preliminary step. Proposed model is experimentally verified by modeling the chernozem ground particles distribution after treatment by classic-type disc-harrow "OLT Drava".

Obrada izlaže zemljište uticaju različitih mehanizama fizičke dekompozicije direktno ili indirektno, suštinski menjajući njegovu mehaničku strukturu. Između ostalih, jedan od mogućih pristupa u analizi kvaliteta svake predviđene operacije i procesa obrade u celini svodi se na uspostavljanje funkcionalnih veza između operativnih parametara primenjene mehanizacije i rezultujuće raspodele čestica obrađenog zemljišta. U ovom radu je, u svojstvu preliminarnog koraka, predložena i eksperimentalno potvrđena primenljivost log-hiperboličke funkcije za opisivanje raspodela veličina čestica obrađenog zemljišta. Testirane su dve probe varijeteta černozema podvrgnutog dopunskoj obradi klasičnom tanjiračom tipa "OLT Drava".