3Po Edgar A, Snapp, S S, Kravchenko A. Potato yield variability across the landscape~J]. Agronomy Jounal, 2010,102(3) :885-894.
4Bentini M, Caprara C, Martell R. Han~esting damage to potato tubers by analysis of impacts recorded with an instrumented sphere [ J ]. Biosystems Engineering, 2006,94( 1 ) : 75-85.
5A1 - Mallahi A, Kataoka T, Okamoto H, et al. Detection of potato tubers using an ultraviolet imaging-based machine vision system[J]. Biosystems Engineering, 2010,105(2) :257-265.
6Adel Hosainpour, Mohammad H, Komarizade, et al. High speed de- tection of potato and clod using an acoustic based intelligent system [ J~. Expert System swith Applications, 2011,38 : 12101-12106.
7Persson D A, Eklundh L, Algerbo P A. Evaluation of an optical sen- sor for tuber yield monitoring[J]. Transactions of the Asae, 2004,47 (5) : 1851-1856.
