Calculation of Permissible Working Hours of Agricultural Wells based on water requirement and cropping pattern in the Hamedan Province (Case study: Asad abad Plain)

Subject Areas : Article frome a thesis

Ali Ghadami Firouzabadi ¹ , Sayed Aboulghasem Haghayeghi Moghaddam ²

1 - Associate Professor, Department of Agricultural Engineering Research, Hamedan Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization, Hamedan, Iran.
2 - Assistant Professor, Department of Agricultural Engineering Research, Khorasan Razavi Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization, Mashad, Iran.

Received: 2017-12-28 Accepted : 2021-09-01 Published : 2022-07-23

Keywords: Agriculture, Water well, Conflict perception, Conflict management,

Abstract :

Abstract
Introduction: Recent droughts and over-harvesting of wells have caused a drop in the level of underground water resources in many plains of the country. This research was conducted in order to investigate and provide corrective methods for determining the permissible hours of pumping agricultural wells in the Asadabad plain of Hamedan.
Methods: In this research, the cultivated area of horticultural and agricultural products was prepared during a 5-year period. The water requirement of different crops for the Asad-Abad plain was extracted from the National Water Document and the gross irrigation requirement was calculated by considering the average irrigation efficiency of the plain. By dividing the gross irrigation requirement by the maximum three-month hydromodule, the allowed hours of well operation per month were calculated. The calculations were done considering the main plants of the cultivation pattern and the total plants of the cultivation pattern in order to influence the cultivation pattern.
Findings: The average number of annual pumping hours for the Asadabad Plain, taking into account the average hydromodule of three months (June, July and August), was calculated as 3455 hours, which is about 15% more than the hours considered in the Asadabad Plain. The effect of annual changes in the cultivation pattern on the number of working hours of the wells was significant at the 5% probability level. The results of two modified methods of calculating pumping hours caused an increase of 26 to 33% in the annual working hours of wells, which is closer to the existing reality.
 
 
 
 
 

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