山西省市级农田灌溉水有效利用系数测算分析技术指导细则（试行）2017年11月目录前言..............................................................................................................11测算分析工作总体框架与流程...............................................................22灌溉水有效利用系数测算分析方法........................................................42.1灌区灌溉水有效利用系数测算分析方法....................................................................42.2区域灌溉水有效利用系数测算分析方法....................................................................43样点灌区选择.........................................................................................53.1样点灌区选择原则......................................................................................................53.2样点灌区数量要求......................................................................................................53.3样点灌区调整条件......................................................................................................54样点灌区灌溉水有效利用系数测算........................................................74.1典型田块选取..............................................................................................................74.2典型田块亩均净灌溉用水量观测与分析方法..........................................................94.3样点灌区年净灌溉用水总量测算............................................................................154.4样点灌区年毛灌溉用水总量计算与分析................................................................164.5样点灌区灌溉水有效利用系数计算........................................................................175市级区域灌溉水有效利用系数计算分析...............................................195.1市级区域大型灌区灌溉水有效利用系数计算........................................................195.2市级区域中型灌区灌溉水有效利用系数计算........................................................195.3市级区域小型灌区灌溉水有效利用系数计算........................................................205.4市级区域纯井灌区灌溉水有效利用系数计算........................................................205.5市级区域灌溉水有效利用系数计算..........................................