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| Research and application of bubbledroot irrigation |
| Wu Pute1, Zhu Delan2, Wang Youke1 |
| (1.National Engineering Center for Irrigation Water Savings, Northwest Agriculture and Forestry University, Yangling, Shaanxi 712100, China; 2.College of Water Resources and Architectural Engineering, Northwest Agriculture and Forestry University, Yangling, Shaanxi 712100, China) |
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Abstract A new kind of bubbledroot irrigation was invented, and by which irrigation water can be transported to the root region of plant directly. An experiment about relationship between pressure head and flow rate on irrigation device was carried out and the flow exponent was less than 0.5, which showed that flow state of irrigation device was turbulence. In order to find effects of the different irrigation technologies on the yield of jujube trees, 5 year old jujube trees of 38.67 hm2 area were irrigated by different methods, such as drip irrigation, pipe irrigation and the bubbledroot irrigation. Compared to noirrigated ones, the net income of the jujube trees irrigated by the drip irrigation, the pipe irrigation and the bubbled root irrigation increased by 4 707.70，8 446.00 and 10 926.00 yuan/hm2, respectively. The production values per volume water of drip irrigation, pipe irrigation and bubbled root irrigation were 1.90，11.30 and 14.60 yuan /m3, respectively. Compared to the drip irrigation, the annual fixed cost of the bubbled root irrigation decreased by 2 030 yuan/hm2, the annual income increased by 2 480 yuan /hm2, and the production values increased by 3.30 yuan/m3, respectively. Compared to the pipe irrigation, the annual fixed cost of the bubbledroot irrigation decreased by 743.30 yuan/hm2, the annual income increased by 6 218.30 yuan/hm2, and the production values increased by 12.70 yuan/m3, respectively. It is concluded that the net income of jujube trees can increase dramatically by using watersaving irrigation engineering, especially the bubbledroot irrigation, by which the increment of the net income of the jujube trees is 235.0% of that of noirrigation. The bubbledroot irrigation should be developed widely in hilly area.
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Received: 14 April 2010
Published: 30 July 2010
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| [1]吴普特,汪有科,辛小桂,等,陕北山地红枣集雨微灌技术集成与示范[J].干旱地区农业研究,2008,26(4):1-6.Wu Pute,Wang Youke,Xing Xiaogui,et al.Integration and demonstration of the date micro-irrigation technology in the hilly of Shanbei[J].Agricultural Research in the Arid Areas,2008,26 (4):1-6.(in Chinese)[2]吴普特,汪有科,韩宇平,等.孟岔生态型现代农业发展模式创建与启示[J].中国发展观察,2008(11):53-55.Wu Pute,Wang Youke,Han Yuping,et al.Enlightenment of modern eco-agricultural development model village in Mengcha[J].China Development Observation,2008(11):53-55.(in Chinese)[3]Wu Pute,Zhu Delan,Wang J.Gravity-fed drip irrigation design procedure for a single-manifold subunit[J].Irrigation Science,2010,28 (4):359-369.[4]唐学林,边丽媛,易成.基于Pro/E的渣浆泵水力部件开发[J].排灌机械工程学报,2010,28(2):112-116.Tang Xuelin,Bian Liyuan,Yi Cheng.Development of hydraulic components of slurry pump based on Pro/E[J].Journal of Drainage and Irrigation Machinery Engineering,2010,28(2):112-116.(in Chinese)[5]任乃飞,江杰,顾佳方,等.基于RE /CFD带分流叶片离心泵叶轮快速开发[J].排灌机械工程学报,2010,28(1):18-21.Ren Naifei,Jiang Jie,Gu Jiafang,et al.Rapid development of centrifugal pump impeller with splitting vanes based on RE /CFD[J].Journal of Drainage and Irrigation Machinery Engineering,2010,28(1):18-21.(in Chinese)[6]Wu I P.An assessment of hydraulic design of micro-irrigation systems[J].Agricultural Water Management,1997,32(3):275-284.[7]Barragan J,Bralts V,Wu I P.Assessment of emission uniformity for micro-irrigation design[J].Biosystems Engineering,2006,93(1):89-97.[8]Keller J,Bliesner R D.Sprinkler and Trickle Irrigation[M].New Jersey:The Blackburn Press,2000. |
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