摘要
对3种类型水源(抽水、自流、井水)的灌区,进行田间水利用系数的实测试验,得到壤土、黏土、沙土3种土壤质地,不同畦幅数范围条件下的灌水定额和田间水利用系数的经验关系式。利用此经验关系式,依据实地调查得到的不同灌区的畦幅数、灌水定额、土壤质地分布情况计算灌区的田间水利用系数值。分别从灌区、行政区、水资源分区、全省范围4个分区尺度计算并评价了田间水利用系数值。该研究结果可以为区域农业水利工程规划设计、农业水资源配置提供参考。
Field test is implemented through classifying three kinds of irrigation districts with different water source,namely pumping water,gravity flow and well.Thus an empirical equation between farm water utilization efficiency and irrigation quota in different range of farmland unit area with silt,clay and sand,is established.Based on it,the farm water utilization coefficient is calculated in terms of farmland unit of area,irrigation quota and soil texture distributing in different irrigation region gained through field survey.The Farm water utilization coefficient is calculated and evaluated from the four regional scales,namely irrigation region,district,water resource subarea and full province range.The research result can offer reference for the regional agricultural water engineering layout and design and the agriculture water resource scheme.
出处
《节水灌溉》
北大核心
2011年第3期39-42,共4页
Water Saving Irrigation
基金
山西省科技进步二等奖获奖项目(2008-J-2-040)
关键词
田间水利用系数
分区
区域尺度
farm water utilization coefficient
subarea
regional scale
