Investigating Water Use Efficiency in Agricultural Production in Irrigation and Drainage Networks of Khuzestan Province (Case Study: Northern Karkheh Irrigation and Drainage Network)

Subject Areas : Irrigation and drainage

mohammad pirmoradi ¹ , ali asareh ² , mehdi asadi loor ³

1 - MS.c student of Water Sciences and Engineering Department, Ahvaz branch, Islamic Azad University, Ahvaz, Iran.
2 - Assistant Professor of Water Sciences and Engineering Department, Ahvaz branch, Islamic Azad University, Ahvaz, Iran
3 - Assistant Professor of Water Sciences and Engineering Department, Ahvaz branch, Islamic Azad University, Ahvaz,

Received: 2019-02-12 Accepted : 2020-06-13 Published : 2019-12-16

Keywords: Cropping Pattern, water productivity, CPD, BPD, NBPD,

Abstract :

Increasing water productivity in agriculture is one of the effective strategies for sustainability of water resources. In this research, irrigation management and water productivity in North Karkheh irrigation and drainage network were evaluated by examining the cropping pattern and the use of land use productivity indices, CPD, BPD and NBPD. The results of the study showed that the mean wheat cultivation in the 5 years period of study (2009-2013) increased by 132% compared to the designer's proposed cultivar, while the average barley yield decreased by 470% compared to the design pattern of the designer. Also, the cultivation of fodder plants such as alfalfa and clover has not been welcomed by farmers in the region. The average 5 years of cultivation at the network level was 5924 hectares and the average water consumption per year was 55.5 million cubic meters; if the water required for the designer crop pattern was an average of 86 million cubic meters per year For 6500 hectares. The five-year average CPD index for wheat, as the product with the highest cropping area, was 818 gm-cubic meters, and for spring crop watermelon, as the product that had the highest water intake among cropping patterns It was 2301 grams per cubic meter. The five-year average of BPD and NBPD for wheat was 5870 and 3018 Rials per cubic meter.