Next Article in Journal
Direct and Indirect Impacts of Fish on Crustacean Zooplankton in Experimental Mesocosms
Previous Article in Journal
Microplastic Fibers Released by Textile Laundry: A New Analytical Approach for the Determination of Fibers in Effluents
Open AccessArticle

Response of Water-Salt Migration to Brackish Water Irrigation with Different Irrigation Intervals and Sequences

School of Resources and Environmental Engineering, Ludong University, Yantai 264025, China
*
Authors to whom correspondence should be addressed.
Water 2019, 11(10), 2089; https://doi.org/10.3390/w11102089
Received: 18 June 2019 / Revised: 15 August 2019 / Accepted: 2 October 2019 / Published: 7 October 2019
(This article belongs to the Section Water Use and Scarcity)
Establishing methods for scientific and rational use of brackish water resources is the key to farmland irrigation in the Yellow River Delta region of China. In this study, we conducted laboratory simulation experiments with soil columns and monitored the changes in water infiltration and salt distribution under eight irrigation treatments, including four intervals (0, 30, 60, and 90 min between irrigations) and two sequences (brackish-brackish-fresh water and brackish-fresh-brackish water). The results showed that the duration of water infiltration into the soil was higher under intermittent irrigation than continuous irrigation, with the highest value recorded at the 90-min irrigation interval. There was no significant difference in the mean soil water content between the brackish-brackish-fresh water (28.01–29.71%) and brackish-fresh-brackish water (28.85–29.98%) irrigation treatments. However, the mean soil desalination rate of the brackish-brackish-fresh irrigation treatment (42.51–46.83%) was higher than that of the brackish-fresh-brackish irrigation treatment (39.48–46.47%), and a much higher soil desalination rate was observed at the 90-min irrigation interval, compared with the other intervals. In conclusion, brackish-brackish-fresh water irrigation at longer time intervals (e.g., 90 min between irrigations) is conducive to reduce soil salt content in the surface soil in the study region.
Keywords: alternating irrigation; desalination rate; intermittent irrigation; sodium adsorption ratio; soil water content alternating irrigation; desalination rate; intermittent irrigation; sodium adsorption ratio; soil water content
MDPI and ACS Style

Zhu, J.; Yang, M.; Sun, J.; Zhang, Z. Response of Water-Salt Migration to Brackish Water Irrigation with Different Irrigation Intervals and Sequences. Water 2019, 11, 2089.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop