Volume 16, Issue 60 (Summer 2012)                   JWSS 2012, 16(60): 33-43 | Back to browse issues page

XML Persian Abstract Print

Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

S. M. Mousavi, A. Hoshmand, S. Bromandnasab, M. Yazdani. Evaluation of Deep Percolation Rates at a Transect of Paddy Fields During Crop Season. JWSS. 2012; 16 (60) :33-43
URL: http://jstnar.iut.ac.ir/article-1-2304-en.html
, mousavi_sm62@yahoo.com
Abstract:   (12808 Views)
The common method of irrigating rice in paddy fields of Iran, like most countries, is flooded irrigation. The water required in this method is too much. However, because of water shortage in recent years, and malfunctioning of irrigation systems, it is needed to use water in a reasonable way and increase water use efficiency. Therefore, it is necessary to know water loss amounts at the paddy fields. The deep percolation (DP) was measured by closed- and open-bottom rings in 4 locations, and 7 sites at each location, of paddy fields in Somae-Sara city, Guilan province. These locations were selected on the base of different physiographic units. The average DP of these locations was also monitored during plant growth season. The measurements were performed twice a week. Results showed that the rate of DP varied during the season, and could take a positive or negative value. The most important factors of these variations were the lateral seepage (from surrounding rice fields) and the high perched groundwater table in paddy fields.
Full-Text [PDF 297 kb]   (2151 Downloads)    
Type of Study: Research | Subject: Ggeneral
Received: 2012/09/11 | Published: 2012/07/15

Add your comments about this article : Your username or Email:

Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

© 2022 CC BY-NC 4.0 | JWSS - Isfahan University of Technology

Designed & Developed by : Yektaweb