Assessment of Deep Percolation in Citrus Orchard

Fachao Zhou, Jin-zhong Yang, T. Biswas
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引用次数: 1

Abstract

Australian irrigators are under considerable pressure to increase irrigation efficiency and reduce deep drainage, driven by environmental and economic imperatives. Capacitance probe sensors are relatively cheap and popular electromagnetic equipment to measure soil water content. A field experiment was performed with capacitance probe in Mallee area of Australia, to collect the water content dynamics and deep percolation below of root zone. A relationship between these multi-sensor probes and estimates of deep percolation calculated using the Darcy's flux equation. Two empirical models of water retention curve were compared to illuminate the importance of water retention curve in deep percolation. The deep percolation estimate shows considerable daily and seasonal variations of drainage rate.
柑桔园深层渗流评价
由于环境和经济的需要,澳大利亚的灌溉人员面临着提高灌溉效率和减少深层排水的巨大压力。电容探头传感器是一种相对便宜和流行的测量土壤含水量的电磁设备。利用电容探针在澳大利亚Mallee地区进行了田间试验,采集了土壤根区以下水分动态和深层渗流特征。利用达西通量方程计算了这些多传感器探针与深层渗流估计之间的关系。通过对两种持水曲线经验模型的比较,阐明了持水曲线在深层渗流中的重要性。深渗估算显示出相当大的日和季节排水速率变化。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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