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首页> 外文期刊>Applied Engineering in Agriculture >KANSAS CENTER PIVOT UNIFORMITY EVALUATION OVERVIEW
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KANSAS CENTER PIVOT UNIFORMITY EVALUATION OVERVIEW

机译：堪萨斯中心枢轴均匀性评估概述

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摘要

Center pivot irrigation systems are the most common system type in Kansas for a variety of factors - one of which is the ability to deliver a uniform depth of water application for a variety of crops and field conditions. Uniform applications are dependent on properly designed, installed and operated sprinkler nozzle packages. Uniformity evaluations were conducted as part of the Mobile Irrigation Lab (MIL) project to promote adoption of improved irrigation management practices with an emphasis on ET based irrigation scheduling. Since efficient and uniform water applications are critical to successful irrigation scheduling; MIL assessment included evaluation of sprinkler package performance using a single line catch can test. Catch can data was used to calculate the coefficient of uniformity (CU) and average application depth. The average CU value of the tested systems was 78.7 with a range of from 91.9 to 53.2. Many of the factors affecting pivot uniformity could have been identified and corrected with a visual inspection and/or comparison to the manufacturer's sprinkler design specifications. Some of the catch tests indicated poorly designed and/or maintained sprinkler systems with reduced uniformity directly impacting crop performance, water use efficiency and economic results. Initial information was used in extension programs to illustrate the effect of various correctable sprinkler package deficiencies on performance and to encourage irrigation farmers to examine their nozzle packages and operating conditions.
机译：中心枢轴灌溉系统是堪萨斯州最常见的系统类型，适用于各种因素 - 其中一个是为各种作物和现场条件提供均匀深度的水应用。均匀的应用依赖于设计的正确设计，安装和操作的喷灌喷嘴封装。作为移动灌溉实验室（MIL）项目的一部分进行统一性评估，以促进采用改进的灌溉管理实践，重点是基于ET的ET灌溉调度。由于高效和均匀的水应用对于成功灌溉调度至关重要; MIL评估包括使用单线捕获的洒水器包性能的评估。 Catch可以数据用于计算均匀性（CU）和平均应用深度的系数。测试系统的平均Cu值为78.7，范围为91.9至53.2。影响枢轴均匀性的许多因素可以通过视觉检查和/或与制造商的喷淋设计规范进行校正。一些捕获试验表明，设计不良和/或维持洒水系统，具有直接影响作物性能的均匀性降低，水利用效率和经济结果。初始信息用于扩展程序，以说明各种可纠正的喷水液包缺陷对性能的影响，并鼓励灌溉农民检查其喷嘴包裹和操作条件。

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