| Effects of ridge and furrow rainwater harvesting cultivation with supplemental irrigation on water use and winter wheat yield in arid area of southern Ningxia |
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| DOI：10.7606/j.issn.1000-7601.2018.04.17 |
| Key Words: the ridge and furrow rainwater harvesting cultivation supplemental irrigation winter wheat soil moisture water use efficiency yield semi-arid area of southern Ningxia |
| Author Name | Affiliation | | YANG Zhen | The Chinese Institute of Water-saving Agriculture, Northwest A&F University, Yangling, Shannxi 712100, China
Key Laboratory of Crop Production and Ecology, Minister of Agriculture, Northwest A&F University, Yangling, Shannxi 712100, China
College of Agronomy, Northwest A&F University, Yangling, Shannxi 712100, China | | DONG Zhao-yun | The Chinese Institute of Water-saving Agriculture, Northwest A&F University, Yangling, Shannxi 712100, China
Key Laboratory of Crop Production and Ecology, Minister of Agriculture, Northwest A&F University, Yangling, Shannxi 712100, China
College of Agronomy, Northwest A&F University, Yangling, Shannxi 712100, China | | WEI Ting | The Chinese Institute of Water-saving Agriculture, Northwest A&F University, Yangling, Shannxi 712100, China
Key Laboratory of Crop Production and Ecology, Minister of Agriculture, Northwest A&F University, Yangling, Shannxi 712100, China
College of Agronomy, Northwest A&F University, Yangling, Shannxi 712100, China | | ZHANG Peng | The Chinese Institute of Water-saving Agriculture, Northwest A&F University, Yangling, Shannxi 712100, China
Key Laboratory of Crop Production and Ecology, Minister of Agriculture, Northwest A&F University, Yangling, Shannxi 712100, China
College of Agronomy, Northwest A&F University, Yangling, Shannxi 712100, China | | JIA Zhi-kuan | The Chinese Institute of Water-saving Agriculture, Northwest A&F University, Yangling, Shannxi 712100, China
Key Laboratory of Crop Production and Ecology, Minister of Agriculture, Northwest A&F University, Yangling, Shannxi 712100, China
College of Agronomy, Northwest A&F University, Yangling, Shannxi 712100, China |
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| Abstract: |
| The objective of this study was to explore the effects of ridge and furrow rainwater harvesting (RFRH) cultivation with supplemental irrigation at different stageson rainwater-collection and soil moisture conservation. A two-year field experiment was conducted in semi-arid area of southern Ningxia from 2013 to 2015. Four supplementalirrigation modes were set up: zero-supplemental-irrigation in growth stages, supplemental irrigation at earlier (jointing) stage, supplemental irrigation at later(heading) stage, supplemental irrigation at earlier(jointing) and later (heading) stages and each irrigation mode has two cultivation patterns: RFRH cultivation with supplemental irrigation (R) and border irrigation (B), aiming to explore the effects of R system on soil moisture, winter wheat yield and water use efficiency (WUE).The results showed that R system can effectively improve the soil water storages in 0~200 cm soil layer, especially in 0~40 cm soil layer. Under the condition of irrigation amount reduction by 50%, yield of the RFRH with supplemental irrigation at earlier stage treatment (R2) and RFRH with zero-irrigation in growth stages treatment (R0) increased by 2.6% and 6.2% compared with corresponding B treatments in 2013-2014 (dry year), there were no significant differences between the RFRH with supplemental irrigation at earlier and later stages treatment (R1), RFRH with supplemental irrigation at later stage treatment (R3) and corresponding B treatments; WUE and IWUE of R treatments were significantly higher than corresponding B treatments under four irrigation modes, the effect of R2 treatment was obvious, increased by 8.5% and 105.1%, respectively; Except for R1 treatment, yield of R2, R3 and R0 treatments increased by 4.5%,7.4%（P<0.05）and 4.9%, respectively, compared with corresponding B treatments in 2014-2015 (wet year); Except for no obvious difference of WUE between R1,R0 treatments and corresponding B treatments, WUE and IWUE of other R treatments were significantly higher than corresponding B treatments under four irrigation modes, increased by up to 3.8% and 114.7%, respectively. Therefore, the ridge and furrow rainwater harvesting cultivation with supplemental irrigation could significantly increase grain yield, WUE of winter wheat. |
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