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Article

Water-Yield Relationship Responses of Maize to Ridge-Furrow Planting Systems Coupled with Multiple Irrigation Levels in China’s Horqin Sandy Land

by 1,2,3, 1,3,*, 1,3 and 3
1
Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
2
School of Life Science, University of Chinese Academy of Sciences, Beijing 100049, China
3
Naiman Desertification Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
*
Author to whom correspondence should be addressed.
Agronomy 2018, 8(10), 221; https://doi.org/10.3390/agronomy8100221
Received: 26 August 2018 / Revised: 4 October 2018 / Accepted: 6 October 2018 / Published: 9 October 2018
Water scarcity threatens the sustainability of irrigated agriculture in semi-arid regions, and ridge-furrow planting systems (RFPS) can be a prospective rainwater harvesting approach. In this study, we aimed to develop a promising water-saving strategy to boost maize productivity and water use efficiency (WUE). In 2017, we carried out a field experiment to study the effects of various RFPS with multiple irrigation levels on the yield-water relationship of maize (Zea mays L.). Eleven treatments were set up: RFPS with film mulching on both ridges and furrows and without water supply after seed emergence, abbreviated as QF; RFPS with film mulching on continuous ridges, abbreviated as MD, including SMD, MMD, and LMD (S, M, and L—three water supply (irrigation plus precipitation) levels of 650 mm, 500 mm, and 350 mm during the whole growing season); RFPS without film mulching, abbreviated as DD, including SDD, MDD, and LDD; conventional flat planting with no film mulching, abbreviated as GG, including SGG, MGG, and LGG; localized full irrigation (actual amount of irrigation excessively exceeding the quantity needed), abbreviated as NM. A positive linear relationship (R2 = 0.95–1), a quadratic curve, and a negative linear relationship were observed between the irrigation water level and actual crop evapotranspiration (ETc), grain yield, and WUE, respectively. The ETc of QF (292 mm) was substantially lower than that of the other treatments (p < 0.01), saving 649 mm of irrigation water and increasing the yield by 2.24% compared with those of NM. Meanwhile, the WUE and irrigation water use efficiency (IWUE) of QF reached maximums of 6.3 and 47.36 kg m−3, respectively, which were significantly higher than those of other treatments (p < 0.001). The results showed that planting in an RFPS with film mulching on both ridges and furrows (a ridge-to-furrow ratio of 50:30, with a 38 mm irrigation level) is suitable for maize to obtain high yield and reduce irrigation water use significantly. View Full-Text
Keywords: ridge-furrow planting systems; evaportranspiration; crop coefficiency; yield; water use efficiencies ridge-furrow planting systems; evaportranspiration; crop coefficiency; yield; water use efficiencies
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MDPI and ACS Style

He, Z.; Zhang, T.; Liu, X.; Shang, X. Water-Yield Relationship Responses of Maize to Ridge-Furrow Planting Systems Coupled with Multiple Irrigation Levels in China’s Horqin Sandy Land. Agronomy 2018, 8, 221. https://doi.org/10.3390/agronomy8100221

AMA Style

He Z, Zhang T, Liu X, Shang X. Water-Yield Relationship Responses of Maize to Ridge-Furrow Planting Systems Coupled with Multiple Irrigation Levels in China’s Horqin Sandy Land. Agronomy. 2018; 8(10):221. https://doi.org/10.3390/agronomy8100221

Chicago/Turabian Style

He, Zhaoquan, Tonghui Zhang, Xinping Liu, and Xue Shang. 2018. "Water-Yield Relationship Responses of Maize to Ridge-Furrow Planting Systems Coupled with Multiple Irrigation Levels in China’s Horqin Sandy Land" Agronomy 8, no. 10: 221. https://doi.org/10.3390/agronomy8100221

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