灌区水循环模拟与不同尺度用水效率分析  

Simulation of Water Cycle in Irrigation Area and Analysis of Water Use Efficiency at Different Scales

作　　者：于宝珠 苏文涛 Yu Baozhu;Su Wentao(HEILONGJIANG PROVINCE WATER RESOURCES AND HYDROPOWER GROUP CO.,LTD.,Harbin,China)

机构地区：[1]黑龙江省水利水电集团有限公司,黑龙江哈尔滨

出　　处：《科学技术创新》2025年第12期177-180,共4页Scientific and Technological Innovation

摘　　要：以某灌区为例探究了主要农作物的水平衡要素及其不同尺度下的用水效率。采用空间尺度划分方法将灌区分成8个尺度,选择水分生产率指标计算分析了灌区主要作物玉米和小麦在8个尺度下的用水效率。结果表明,毛入流水分生产率(NQ1)和灌溉水分生产率(NQ2)随着尺度增加而提高,蒸发蒸腾水分生产率(NQ3)在各尺度基本保持平稳。从整体来看,随着尺度增加水分生产率升高,相应的用水效率得到提升,有利于灌区水资源的循环利用。Taking an irrigation district as an example,the water balance factors of main crops and their water use efficiency at different scales were studied.The irrigation area was divided into 8 scales by spatial scale division method,and the water use efficiency of maize and wheat under 8 scales was calculated and analyzed by selecting water productivity index.The results showed that gross inflow water productivity(NQ1)and irrigation water productivity(NQ2)increased with the increase of scale,and evapotranspiration water productivity(NQ3)remained stable at all scales.On the whole,with the increase of water productivity,the corresponding water use efficiency is improved,which is conducive to the recycling of water resources in irrigation areas.

关 键 词：水循环 用水效率 水分生产率 空间尺度划分 

分 类 号：TV213.4[水利工程—水文学及水资源]