ICS13.060.10 CCSZ50 45 广西壮族自治区地方标准 DB45/T2513—2022 灌溉水有效利用系数测算规程 Technicalcodeofpraticeofestimationoffarmlandirrigationwateruse efficiency 2022-06-24发布 2022-07-30实施 广西壮族自治区市场监督管理局  发布 DB45/T2513—2022 I目次 前 言...........................................................................III 引 言............................................................................IV 1范围.................................................................................1 2规范性引用文件.......................................................................1 3术语和定义...........................................................................1 4灌区灌溉水有效利用系数测算方法.......................................................2 4.1测算方法选择.....................................................................2 4.2首尾测算法.......................................................................2 4.3系数连乘法.......................................................................3 5水量计量.............................................................................5 5.1计量点设置.......................................................................5 5.2渠道量水方法.....................................................................5 5.3管道量水方法.....................................................................6 5.4田间量水方法.....................................................................6 6毛灌溉水量测算.......................................................................6 6.1灌区毛灌溉水量测算...............................................................6 6.2区域毛灌溉水量测算...............................................................7 7净灌溉水量测算.......................................................................7 7.1一般规定.........................................................................7 7.2典型田块单位面积净灌溉水量.......................................................8 7.3灌区净灌溉水量...................................................................9 8区域灌溉水有效利用系数测算..........................................................10 8.1一般规定........................................................................10 8.2样点灌区选择....................................................................10 8.3区域不同类型灌区平均灌溉水有效利用系数..........................................10 附录A（资料性）灌溉水有效利用系数测算管理.............................................13 附录B（资料性）水位流量关系曲线率定...................................................17 附录C（资料性）旱作物土壤含水率与单位面积净灌溉水量测定方法...........................19 附录D（资料性）水泵提水灌溉的旱作物单位面积净灌溉水量测定方法.........................21 附录E（资料性）有水层（土壤饱和状态）水田作物单位面积净灌溉水量测定方法...............22 附录F（资料性）无水层（土壤非饱和状态）水田作物单位面积净灌溉水量测定方法.............24 附录G（资料性）泵站提水量测定的电量估算法.............................................26 附录H（资料性）样点灌区和典型田块选择（取）要求.......................................27 附录I（资料性）标识牌制作.............................................................29 附录J（资料性）测算成果表.............................................................31 DB45/T2513—2022 II附录K（资料性）观测记录表.............................................................38