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本文分析了影响深层渗漏的因素。利用调和分析得到不均匀灌溉对深层渗漏的影响。用正弦函数描述克里斯坦均匀系数(CUC)。证明了 CUC 与相对波幅,波幅(δⅠ)与正弦波平均灌水量(ī)之间的比成比例关系。波幅受作物大小根系调整的影响,有效均匀性与观测均匀性之间有一定的差别。为了评价灌溉均匀性的水文方面的意义,理论研究提供了分析依据。深层渗漏受到几种因素的影响。首要因素是ī与作物耗水量之间的差。差越大深层渗漏量也越大。第二个重要因素就是 CUC。对于任一给定的水量,随着 CUC 减小,根区以下的渗漏量增加。土壤剖面中配水的调整能减少渗漏。这种影响,喷嘴间距小的比间距大的更明显。
This article analyzes the factors that affect deep leakage. The effect of inhomogeneous irrigation on deep seepage is obtained by harmonic analysis. The Kriging Coefficient (CUC) is described by a sine function. The ratio between CUC and relative amplitude, amplitude (δ Ⅰ) and average sine wave irrigation (ī) is proved to be proportional. The amplitude is affected by the root system adjustment of crop size, and there is a certain difference between effective uniformity and observation uniformity. In order to evaluate the hydrological significance of irrigation uniformity, theoretical studies provide the basis for analysis. Deep seepage is affected by several factors. The primary factor is the difference between ī and crop water consumption. The greater the difference, the greater the amount of deep leakage. The second important factor is CUC. For any given amount of water, as the CUC decreases, the amount of leakage below the root zone increases. Water distribution in the soil profile can reduce leakage. This effect, the smaller nozzle spacing than the more obvious spacing.