Establishing the relation between canal density and canal-systemwater use efficiency can facilitate the evaluation of the influence canal distribution on canal-systemwater use efficiency.
渠道密度与渠系水利用系数两者之间关系式的确立，有助于从理论上评价渠道分布对渠系水利用系数的影响。
2
Finally, the canalwaterefficiencyof all levels of canals, canalsystemwaterefficiency and paddy field water consumptions of the 10 main irrigation areas in Shenyang city were put out.