| Effects of deep irrigation on water consumption and water use efficiency of winter wheat |
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| DOI：10.7606/j.issn.1000-7601.2017.02.36 |
| Key Words: deep irrigation winter wheat water consumption characteristics water use efficiency |
| Author Name | Affiliation | | HUANG Jie | College of Water Resource Science and Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, China | | SUN Xi-huan | College of Water Resource Science and Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, China
Shanxi Conservancy Technical College, Yuncheng, Shanxi 044004, China | | MA Juan-juan | College of Water Resource Science and Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, China | | GUO Xiang-hong | College of Water Resource Science and Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, China | | DI Nan | College of Water Resource Science and Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, China |
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| Abstract: |
| A field experiment was conducted on, Liangxing 99, a mid-late maturing winter wheat with high yield in Shanxi Conservancy Technical College training base in Yanhu District, Yuncheng City of Shanxi, to explore the effects of deep irrigation on water consumption and water use efficiency of winter wheat. The results showed the soil water dynamic changes within 20～160 cm depth of root zone was more than that under the surface irrigation treatment in the whole growth period. The total water consumption under T1 (surface irrigation treatment) was significantly higher than that under T2 (depth of wetting layer is 60%), T3 (depth of wetting layer is 75%) and T4 (depth of wetting layer is 90%). Deep irrigation increased the consumption of rainfall and irrigation, and reduced the consumption of soil water storage. There was no significant difference between T2 and T3.The water consumption and water consumption coefficient of T3 in the stage from heading to filling and the stage from grain filling to maturity were larger. Under different irrigation conditions, the efficiency of water use and yield under T1 treatment was the lowest. With the increase of wetting layer depth, efficiency of water use under other treatments increased and then decreased. The production, efficiency of water use and efficiency of irrigation water use under T2 and T3 were the best at 150 mm and 188 mm depth of wetting layer. As far as high yield and water-saving were concerned. T3 was the optimal under the condition of this experiment. |
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