LOSSES FROM LOW-PRESSURE CENTER-PIVOT IRRIGATION SYSTEMS IN A DESERT CLIMATE AS AFFECTED BY NOZZLE HEIGHT

被引：13
|
作者：
ABOGHOBAR, HM
机构：
[1] College of Agriculture, Agricultural Engineering Department, King Saud University, Riyadh
来源：
AGRICULTURAL WATER MANAGEMENT | 1992年 / 21卷 / 1-2期
关键词：
D O I：
10.1016/0378-3774(92)90079-C
中图分类号：
S3 [农学（农艺学）];
学科分类号：
0901 ;
摘要：
A study of spray losses from three low-pressure center-pivot sprinkler irrigation systems was carried out under field operating conditions. The evaporation losses during sprinkling were determined at three different spray-nozzle heights from ground surface. The average values were 15.63, 21.19 and 35.77% for heights of 1.25, 1.75 and 2.5 m, respectively. In addition, the three center-pivot systems were evaluated. The values for the distribution uniformity, the potential application efficiency, and the uniformity coefficient were calculated.
引用
收藏
页码：23 / 32
页数：10
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