摘要
为合理确定样点灌区数量,减少灌溉水利用系数测算中的统计工作,提高灌溉水利用系数的测算精度,以扬州市仪征市小型灌区为例,对小型灌区样点灌区的选取数量、选取方法进行研究,运用统计学原理,采用概率抽样中的简单随机抽样和非概率抽样中的配额抽样的方法分别确定并选取样点灌区的数量并相互比较,为以后灌溉水利用系数测算过程中样点灌区的选取方法提供参考与借鉴。
In order to reasonably determine the number of sample irrigation areas,reduce the statistical work in the calculation of irrigation efficiency and improve the calculation accuracy of irrigation efficiency,Taking the smallscale irrigation area in Yizheng City in 2018 as an example,this paper studies the selection quantity and selection method of sample irrigation areas in small-scale irrigation areas,and uses the statistical principle to determine and select the number of sample irrigation areas by using the methods of simple random sampling in probability sampling and quota sampling in non-probability sampling,It provides a reference for the selection method of sample irrigation area in the calculation of irrigation water utilization coefficient in the future.
作者
吴松
蔡守华
WU Song;CAI Shouhua(College of Water Conservancy Science and Engineering,Yangzhou University,Yangzhou 225009,China)
出处
《江苏水利》
2022年第6期56-59,63,共5页
Jiangsu Water Resources
关键词
数理统计
概率抽样
样点灌区
方法研究
mathematical statistics
probability sampling
sample irrigation area
method study
