Abstract
The research aims to find a set of figures in case of the normal distribution of application depths that represent relationships for the parameters used to describe the performance characteristics of the irrigation system. Using 6010 values for each of the dimensionless application depth, dimensionless cumulative area, and the coefficient of variation, with the help of the SPSS statistical program, an empirical equation was obtained to estimate the dimensionless application depth as a function of the dimensionless cumulative area and the coefficient of variation. Five figures were developed containing the relationships between dimensionless net depth of irrigation, application uniformity, coefficient of variation or uniformity coefficient, application efficiency or deep percolation losses, and storage efficiency or deficit coefficient. By knowing two of these parameters, the rest of them can be easily found from these figures.
Highlights
The distribution of the application depths application uniformity and a function of the corresponding to the area are linear distribution application adequacy and deep percolation losses and normal distribution [1[
Based on equation (5), the dimensionless net depth of irrigation was calculated for several values of coefficient of variation from 0 to 0.625 or equivalent to that for the uniformity coefficient according to equation (9) for different levels of application adequacy from 0.5 to 1
The application efficiency was found from equation (7) or its equivalent from deep percolation according to equation (8) for several values of the coefficient of variation from 0 to 0.625 or equivalent to that for the uniformity coefficient for different levels of application adequacy from 0 to 1
Summary
The distribution of the application depths application uniformity and a function of the corresponding to the area are linear distribution application adequacy and deep percolation losses and normal distribution [1[. The efficiency, adequacy and uniformity of the distribution of the application depths usually irrigation are parameters for designing and coincides with the normal distribution and evaluating the performance of the irrigation corresponds to its average value when the system. When high efficiency irrigation is Christensen uniformity coefficient for irrigation combined with a good water distribution depths is greater than 70% [2, 3].
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