Next Article in Journal
Urbanization and Floods in Sub-Saharan Africa: Spatiotemporal Study and Analysis of Vulnerability Factors—Case of Antananarivo Agglomeration (Madagascar)
Previous Article in Journal
Supervised Machine Learning for Estimation of Total Suspended Solids in Urban Watersheds
Article

Effects of Soil Water Deficit at Different Growth Stages on Maize Growth, Yield, and Water Use Efficiency under Alternate Partial Root-Zone Irrigation

1
Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas of the Ministry of Education, Northwest A&F University, Yangling 712100, China
2
College of Life Science, Yan’an University, Yan’an 716000, China
*
Authors to whom correspondence should be addressed.
Water 2021, 13(2), 148; https://doi.org/10.3390/w13020148
Received: 13 November 2020 / Revised: 23 December 2020 / Accepted: 6 January 2021 / Published: 10 January 2021
(This article belongs to the Section Water, Agriculture and Aquaculture)
To investigate the effects of alternate partial root-zone irrigation (APRI) and water deficit at different growth stages on maize growth, physiological characteristics, the grain yield, and the water use efficiency (WUE), a pot experiment was conducted under a mobile automatic rain shelter. There were two irrigation methods, i.e., conventional irrigation (CI) and APRI; two irrigation levels, i.e., mild deficit irrigation (W1, 55%~70% FC, where FC is the field capacity) and serious deficit irrigation (W2, 40%~55% FC); and two deficit stages, i.e., the seedling (S) and milking stage (M). Sufficient irrigation (W0: 70%~85% FC) was applied throughout the growing season of maize as the control treatment (CK). The results indicated that APRI and CI decreased the total water consumption (ET) by 34.7% and 23.8% compared to CK, respectively. In comparison to CK, APRI and CI increased the yield-based water use efficiency (WUEY) by 41% and 7.7%, respectively. APRI increased the irrigation water efficiency (IWUE) and biomass-based water use efficiency (WUEB) by 8.8% and 25.5% compared to CK, respectively. Additionally, ASW1 had a similar grain yield to CK and the largest harvest index (HI). However, the chlorophyll and carotenoid contents were significantly reduced by 13.7% and 23.1% under CI, and by 11.3% and 20.3% under APRI, compared to CK, respectively. Deficit irrigation at the milking stage produced a longer tip length, resulting in a lower grain yield. Based on the entropy weight method and the technique for order preference by similarity to an ideal solution (TOPSIS) method, multi-objective optimization was obtained when mild deficit irrigation (55%~70% FC) occurred at the seedling stage under APRI. View Full-Text
Keywords: irrigation method; deficit stage; irrigation level; grain yield; water use efficiency; maize irrigation method; deficit stage; irrigation level; grain yield; water use efficiency; maize
Show Figures

Figure 1

MDPI and ACS Style

Cheng, M.; Wang, H.; Fan, J.; Zhang, F.; Wang, X. Effects of Soil Water Deficit at Different Growth Stages on Maize Growth, Yield, and Water Use Efficiency under Alternate Partial Root-Zone Irrigation. Water 2021, 13, 148. https://doi.org/10.3390/w13020148

AMA Style

Cheng M, Wang H, Fan J, Zhang F, Wang X. Effects of Soil Water Deficit at Different Growth Stages on Maize Growth, Yield, and Water Use Efficiency under Alternate Partial Root-Zone Irrigation. Water. 2021; 13(2):148. https://doi.org/10.3390/w13020148

Chicago/Turabian Style

Cheng, Minghui; Wang, Haidong; Fan, Junliang; Zhang, Fucang; Wang, Xiukang. 2021. "Effects of Soil Water Deficit at Different Growth Stages on Maize Growth, Yield, and Water Use Efficiency under Alternate Partial Root-Zone Irrigation" Water 13, no. 2: 148. https://doi.org/10.3390/w13020148

Find Other Styles
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
Search more from Scilit
 
Search
Back to TopTop