水量平衡原理在测算南方河网灌区灌溉水利用系数中的应用

Application of Water Balance Principle in Irrigation Water Utilization Coefficient Calculation of South River Irrigation District

灌溉水利用系数是反映农业用水效率的重要指标。根据南方河网灌区的实际,提出应用水量平衡原理,分析确定南方灌区的灌溉水利用系数的方法。是通过采用灌区已建水利工程和塘坝等水利设施供水统计资料,在确定作物灌溉定额的基础上,反推得出灌区的渠系水利用系数,最后分析确定灌区灌溉水利用系数,为南方灌区灌溉水利用系数测算分析提供借鉴或验证。

Irrigation water utilization coefficient is an important index to reflect the agricultural water use efficiency.In this paper,according to the actual situation of south River irrigation area,the water balance principle is proposed to analyze the water use coefficient calculation method for south irrigation area.The detailed process is using the statistics data of existing water conservancy facilities and pond to calculate the water use coefficient of the irrigation canal system on the basis of the determination of crop irrigation quota,and then determining the irrigation water use coefficient.The result can be used as a reference or verification for water coefficient calculation of south river irrigation area.