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| DOI：doi：10.13522/j.cnki.ggps.20180704 |
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| Soil Moisture Dynamic and Crop Production of a Rainfed Wheat-summer Maize Rotation System |
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LIU Pei, LIU Xiaoli, WANG Jinjin, CAI Tie, ZHANG Peng, REN Xiaolong, JIA Zhikuan, CHEN Xiaoli
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1. College of Agronomy, Northwest A＆F University, Yangling 712100, China; 2. Minister of Agriculture Key Laboratory of Crop Physi-ecology and Tillage in Northwestern Loess Plateau/Institute of Water Saving Agriculture in Arid Areas of China, Northwest A＆F University, Yangling 712100, China
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| Abstract: |
| 【Objective】The objective of this study is to examine the efficacy of ridge-furrow rain collecting system in improving the production of winter wheat-summer maize rotation cropping system. 【Method】Maize hybrid Zhengdan 958 and wheat Xinong 979 were used as the model plants. We considered four treatments: traditional flat-tillage (CK), ridge-furrow tillage at 40 cm∶40 cm (R-F40), 40 cm∶60 cm (R-F60), and 40 cm∶80 cm (R-F80). 【Result】 Water use efficiency (WUE) of R-F60 and R-F80 was higher than that in other treatments, and the yield of wheat grain increased with the furrow spacing. The water use efficiency (IUE) of the ridge-furrow rain collecting system firstly increased and then deceased as the furrow spacing increased. The system also increased the WUE and yield of the maize. Similarly, as the furrows increased, the yield first increased but followed by a decline. Overall, the system increased the yield and WUE of both wheat and maize, especially the R-F60 which increased the yield of wheat and maize by 12.75% and 7.98% respectively, compared to CK.【Conclusion】The ridge-furrow rain collecting system is an effective method to improve efficient use of rainfall and production of maize-wheat rotation cropping system in arid and semi-arid regions. |
| Key words: ridge-furrow rain collecting system; irrigation; winter wheat; summer maize; yield; WUE |
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