ISWC OpenIR  > 水保所知识产出(1956---)
基于样本流量偏差率的微灌灌水 均匀度评价方法
鞠学良1,2; 吴普特1,2; 朱德兰2; 张林1,2
2016
Source Publication排灌机械工程学报
Volume34Issue:2Pages:173-178
Abstract

为了探索一种简便有效评价大田微灌系统灌水均匀度的新方法,定义了样本流量偏差率.
基于灌水器流量服从正态分布的假设,建立了样本流量偏差率与现有灌水均匀度评价指标之间
的关系,推导了抽样误差的计算公式,提出了合理的样本容量和样本分组数. 建立了基于样本流
量偏差率的灌水均匀度评价标准,最终提出了基于样本流量偏差率评价大田微灌灌水均匀度的
新方法. 案例应用表明: 相比图解法,新方法根据数值计算结果评价灌水均匀度,可避免人为画
线误差,提高评价结果的可靠度; 相比传统数值法,新方法计算量少,可作为快速评价大田微灌
系统灌水均匀度的有效方法.

Other Abstract

The field estimation of water application uniformity is the major way to assess the hydraulic
design,operation and management and the equipment quality of the micro-irrigation system. The traditional
emitter flow variation using the maximum,minimum and average emitter discharge is only used
as the hydraulic design uniformity criterion,which could not be used to evaluate the field water application
of micro-irrigation systems. The sample emitter flow variation was defined to evaluate the field
water application uniformity. The relationships between the sample emitter flow variation and the other
traditional indexes of water application uniformity were developed based on the assumption that the
emitter flow of the field micro-irrigation systems obeys the normal distribution. The related formulations
of sample errors were derived. The sample size and grouping number were also proposed. The criteria
of sample emitter flow variation under different sample grouping number were proposed by comparison
with those of the ASABE and GB standards. The estimation procedure of sample emitter flow variationwas then proposed to assess the field water application uniformity. The application case indicates that
the new method is easily adaptable and reliable for estimating the field water application uniformity.

Keyword微灌 灌水均匀度 样本流量偏差率 评价方法
Indexed By中文核心期刊要目总览
Language中文
Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/8629
Collection水保所知识产出(1956---)
Affiliation1.西北农林科技大学水土保持研究所
2.中国旱区节水农业研究院
Recommended Citation
GB/T 7714
鞠学良,吴普特,朱德兰,等. 基于样本流量偏差率的微灌灌水 均匀度评价方法[J]. 排灌机械工程学报,2016,34(2):173-178.
APA 鞠学良,吴普特,朱德兰,&张林.(2016).基于样本流量偏差率的微灌灌水 均匀度评价方法.排灌机械工程学报,34(2),173-178.
MLA 鞠学良,et al."基于样本流量偏差率的微灌灌水 均匀度评价方法".排灌机械工程学报 34.2(2016):173-178.
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