Effect of rainfall concentration with different ridge widths on winter wheat production under semiarid climate |
| |
| Institution: | 1. College of Agronomy, Northwest A&F University, Yangling 712100, China;2. Key Laboratory of Crop Physi-ecology and Tillage Science in Northwestern loess Plateau, Ministry of Agriculture, Northwest A&F University, Yangling 712100, China;1. Institute of Plant Nutrition & Resource Environment, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China;2. Yuanyang Experimental Station of Crop Water Use, Ministry of Agriculture, Yuanyang 453514, China;3. College of Geography and Tourism, Zhengzhou Normal University, Zhengzhou 450044, China;1. State Key Laboratory of Grassland Agro-ecosystems, Institute of Arid Agroecology, School of Life Sciences, Lanzhou University, Lanzhou 730000, China;2. Farming Technology Extension Center of Yuzhong County, Gansu Province, Lanzhou 730100, China;3. United Nations Environment Programme, P.O. Box 47074-00100, Nairobi, Kenya;4. School of Agriculture and Veterinary Sciences, South Eastern Kenya University, Kitui 170-90200, Kenya;1. State Key Laboratory of Grassland Agro-ecosystems, Institute of Arid Agroecology, School of Life Sciences, Lanzhou University, Lanzhou 730000, Gansu Province, China;2. Faculty of Agriculture, University of Zalingei, Zalingei, Sudan;1. College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China;2. Department of Earth, Atmospheric and Planetary Sciences, Purdue University, 550 Stadium Mall Drive, West Lafayette, Indiana, 47907, USA;1. College of Agronomy, Northwest A&F University, Yangling, 712100 Shaanxi, China;2. Ottawa Research and Development Centre, Agriculture and Agri–Food Canada, 960 Carling Ave., Ottawa, ON K1A OC6, Canada |
| |
| Abstract: | Ridge and furrow rainfall concentration (RC) system has gradually been popularized to increase water availability to crops for improving and stabilizing agricultural production in the semiarid area of northwest China. The system is comprised of two elements: the plastic-covered ridge serves as rainfall harvesting zones and the furrow serves as planting zones. To make this system more perfect for alleviating drought stress in semiarid region, it is necessary to test optimum planting systems. A field experiment was conducted from 2007 to 2010 to evaluate the effects of RC planting on soil moisture, wheat yield and water use efficiency (WUE) under different ridge widths. Four planting systems were designed (RC40: 40 cm ridge with 60 cm furrow width, RC60: 60 cm ridge with 60 cm furrow width, RC80: 80 cm ridge with 60 cm furrow width, and CF: conventional flat without ridging). The results showed that RC planting can significantly increase soil moisture in 0–200 cm during the growing seasons of winter wheat. The rainfall-harvesting effect increased with ridge width increasing. Winter wheat yield and WUE was significantly higher under RC60 than under CF by 405.1 kg ha?1 and 2.39 kg mm?1 ha?1, respectively, on average across the three experimental years (P < 0.05). The above findings indicate that RC60 can benefit winter wheat cropping for higher yield through improving soil moisture. It could be concluded that the RC planting system with 60 cm ridge and furrow width will offer a sound opportunity for sustainable farming in semiarid dryland agricultural area. |
| |
| Keywords: | Rainfall concentration Soil moisture Ridge width Winter wheat Semiarid area |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
