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)
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.
吴普特， 朱德兰， 汪有科. 涌泉根灌技术研究与应用[J]. 排灌机械工程学报, 2010, 28(4): 354-357.
Wu Pute, Zhu Delan, Wang Youke. Research and application of bubbledroot irrigation. Journal of Drainage and Irrigation Machinery Engin, 2010, 28(4): 354-357.
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