Paper Title:
Effects of Dripper Discharge and Irrigation Amount on Soil-Water Dynamics under Subsurface Drip Irrigation
  Abstract

Subsurface drip irrigation (SDI) that has a wide application prospect is one of the high efficiency water-saving irrigation techniques. Research on regulation of soil-water dynamics in irrigation design parameters of SDI has important points in improving its irrigation design and guiding its practical function. In this study, soil wetting patterns were investigated in laboratory experiments which were operated at three different dripper discharges (0.76, 1.15 and 1.25 l h-1) and two different irrigation amounts (4.6 and 9.2 l). The results showed that, (1) with the increase of dripper discharges from 0.76 l h-1 to 1.25 l h-1, water content around the emitter are increasing from 0.225 cm3 cm-3 to 0.300 cm3 cm-3, (2) increasing the dripper discharge and irrigation amount increased the size of the wetted zone, (3) upward distance of the wetting front is less than downward distance and horizontal distance of the wetting front presents symmetry distribution at the same the dripper discharges and irrigation amount, (4) with the increase of irrigation amounts from 4.6 l to 9.2 l, water contents of the vertical and horizontal direction are increasing 10% to 20%.

  Info
Periodical
Advanced Materials Research (Volumes 347-353)
Chapter
Chapter 4: Development and Utilization of Biomass Energy
Edited by
Weiguo Pan, Jianxing Ren and Yongguang Li
Pages
2400-2403
DOI
10.4028/www.scientific.net/AMR.347-353.2400
Citation
X. N. Mei, Z. Z. Shen, J. Ren, Z. H. Wang, "Effects of Dripper Discharge and Irrigation Amount on Soil-Water Dynamics under Subsurface Drip Irrigation", Advanced Materials Research, Vols. 347-353, pp. 2400-2403, 2012
Online since
October 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Yan Fang Diao, Jie Dong, Gang Wang, Na Yao, Fan Ye
Chapter 9: Water Supply and Drainage Engineering
Abstract:The reservoir real-time operation is a cyclic process of forcast-decision making-implementation, in which the key issue is to confirm...
3676
Authors: Mohamad Nor Musa, Muhammad Ariff Taha
Chapter 9: Research and Design of Related Machines and Technologies
Abstract:The objective of this project is to design a center pivot irrigation system and determine the efficiency of the system by using experimental...
549
Authors: Ye Lv, Xiao Yan Guan, Ben Qing Ruan, Yan Wei Wang
Chapter 5: Materials and Technologies of Environmental Engineering, Development and Protection of Bioresources
Abstract:Soil particle size distribution (PSD) is one of the most important physical properties of soil due to its strong influence on hydraulic...
205