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Plant Root Templated Irrigation

机译：植物根模板灌溉

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A new method is explored for subsurface irrigation where the plant root structure is used as the subsurface water distribution system. Plants are severed at the stem and the stem stump is attached to a pressurized water source such that water may permeate into surrounding soil through the existing buried root system. This pressurized root system serves as a well- distributed buried irrigation water source to the other nearby growing plants taking up water. The feasibility of using an existing root structure in this manner to supply water at rates necessary to satisfy other growing plants was determined by conducting laboratory water hydraulic conductance studies. Laboratory growth studies were used to directly test the proposed root templated irrigation (RTI) approach. Modelling simulations were also utilized to extend laboratory findings to other scenarios and compare expected water use efficiency benefits associated with this proposed irrigation method with surface irrigation (SI) and subsurface drip irrigation (SDI) practices. Irrigation study measurements showed that RTI provides more efficient water use as compared to SI. Modelling calculations were in qualitative agreement with the experimental studies, indicating that RTI yields improvement in root water uptake over the SI and also SDI unless SDI source spacing is narrow. Copyright (c) 2016 John Wiley & Sons, Ltd.
机译：探索了一种将地下根系用作地下水分配系统的地下灌溉新方法。在茎上切断植物，将茎残端连接到加压水源，以使水可以通过现有的地下根系渗透到周围的土壤中。这种加压的根系可作为分布良好的埋地灌溉水源，提供给附近其他正在用水的生长植物。通过进行实验室水力传导研究，确定了以这种方式使用现有根系结构以满足其他生长植物所需的速率供水的可行性。实验室生长研究用于直接测试建议的根模板灌溉（RTI）方法。还利用建模模拟将实验室发现扩展到其他情况，并比较与该拟议的灌溉方法与地面灌溉（SI）和地下滴灌（SDI）实践相关的预期用水效率收益。灌溉研究的测量结果表明，与SI相比，RTI的用水效率更高。建模计算与实验研究在质量上吻合，表明RTI可以提高根系对SI和SDI的吸水量，除非SDI源间距狭窄。版权所有（c）2016 John Wiley＆Sons，Ltd.

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