| Biology and Soil |
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| Water Use Efficiency of Shelterbelt along the Tarim Desert Highway under Drip Irrigation |
| DU Hu-lin1, BAO Zhong-wen1,2, JIN Xiao-jun3, ZHOU Hong-wei3, SUN Shu-peng2, YAN Ruo-sen3, WU Tian-chang1 |
1.Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China;
2.Graduate University of Chinese Academy of Sciences, Beijing 100049, China;
3.Tarim Oilfield Corporation, China National Petroleum Corporation, Kurle 841000, Xinjiang, China |
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Abstract The ecological shelterbelt engineering along the Tarim Desert Highway with length of 436 km is an important "green corridor" in the Taklimakan desert. The irrigation for desert highway shelterbelt depends on underground salty water mined in situ along the desert highway. There are 110 irrigation motor-pumped wells, and the designed irrigation flux is 3.6 L·h-1 and the irrigation duration is 6 h. A comparative experiment of drip irrigation and root-zone irrigation were conducted in the study to assess the water use efficiency of drip irrigation of the desert highway shelterbelt. Results illustrated that the water use efficiency of drip irrigation was less than 50%, and there were several problems such as evaporation loss of water by surface soil layer, low water use efficiency, etc, in the application of drip irrigation along the Tarim Desert Highway. The research provides information on the improvement of irrigation water use efficiency in desert highway shelterbelt.
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Received: 07 June 2011
Published: 20 March 2012
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2012, Vol. 32 
