Energy use and sensitivity analysis of energy with economical models for rice production in iran semi-mechanized system
| Autor | Houshang Bahrami - Fazlollah Eskandari Cherati - Sajjad Barkhordari |
| Cargo | Shahid Chamran University of Ahvaz, Department of Biosystem Engineering, Iran - Shahid Chamran University of Ahvaz, Department of Biosystem Engineering, Iran - University of Theran, Faculty of Economics, Iran |
| Páginas | 18-27 |
QUID Nº30, pp. 18-27, enero -junio de 2018, ISSN: 1692-343X, Medellín-Colombia
ENERGY USE AND SENSITIVITY ANALYSIS OF ENERGY WITH ECONOM ICAL MODELS FOR
RICE PRODUCTION IN IRAN SEMI-MECHANIZED SYSTEM
(Recibido el 19-01-2018. Aprobado el 03-04-2018)
Associate Professor
Houshang Bahrami,
Shahid Chamran University
of Ahvaz, Department of
Biosystem Engineering, Iran,
f-cherati@phdstu.scu.ac.ir
PhD. Fazlollah Eskandari
Cherati,
Shahid Chamran University
of Ahvaz, Department of
Biosystem Engineering, Iran,
bahrami16@gmail.com
Sajjad Barkhordari,
University of Theran, Faculty
of Economics, Iran,
sajadbarkhordari@gmail.com
Abstract. The aims of this study were to investigate influences of energy inputs and energy forms on output levels
and evaluation of inputs sensitivity for rice production in Mazandaran province, Iran. The sensitivity of energy
inputs was estimated using the marginal physical productivity (MPP) method and partial regression coefficients
on rice yield. Data were collected from 72 r ice farms in September 2016. The sample volume was determined by
random sampling method. Total energy input was found to be 61.23 GJ ha−1 and total energy output was calculated
as 139.11 GJ ha−1. The highest average energy consumption of inputs was for Irrigation canal (40.51 GJ ha−1)
which was accounted for about 66% of the total energy input. Econometric model evaluation showed that the
machinery energy was the most significant input affecting the output level. Sensitivity analysis results indicate
that with an additional use of 1 MJ of each machinery and Toxin energy, would lead to an additional increase in
yield by 0.903 and 0.511 kg, respectively. T he MPP of human labor and seeds was negative. It can be because of
applying the inputs more than required or improperly applying.
Keywords. Rice, Sensitivity of energy, Cobb–Douglas, Iran
Citar, estilo APA: Bahrami, H., Cherati, F. & Barkhordari, S. (2018).Energy use and sensitivit y analysis of energy with economical models for rice production
in Iran semi-mechanized system. Revista QUID (Special Issue), 18-27.
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